Publications (103)
A Catalog of Bulge+Disk Decompositions and Updated Photometry for 1.12 Million Galaxies in the Sloan Digital Sky Survey
Luc Simard, J. Trevor Mendel, David R. Patton +2
We perform two-dimensional, Point-Spread-Function-convolved, bulge+disk decompositions in the and bandpasses on a sample of 1,123,718 galaxies from the Legacy area of the S…
The ESO Distant Cluster Sample: galaxy evolution and environment out to z=1
Bianca M. Poggianti, Alfonso Aragon-Salamanca, Steven Bamford +25
The ESO Distant Cluster Survey (EDisCS, P.I. Simon D.M. White, LP 166.A-0162) is an ESO large programme aimed at studying clusters and cluster galaxies at z=0.4-1. How different is…
The DEEP Groth Strip Survey II. Hubble Space Telescope Structural Parameters of Galaxies in the Groth Strip
Luc Simard, Christopher N. A. Willmer, Nicole P. Vogt +7
The quantitative morphological classification of distant galaxies is essential to the understanding of the evolution of galaxies over the history of the Universe. This paper presen…
Breaking the Disk/Halo Degeneracy with Gravitational Lensing
Ariyeh H. Maller, Luc Simard, Puragra Guhathakurta +4
The degeneracy between the disk and the dark matter contribution to galaxy rotation curves remains an important uncertainty in our understanding of disk galaxies. Here we discuss a…
The Size Function of Galaxy Disks out to z ~ 1 from the Canada-France-Hawaii-Telescope Legacy Survey
Anudeep Kanwar, Luc Simard, David Schade +1
The formation and growth of galaxy disks over cosmic time is crucial to our understanding of galaxy formation. Despite steady improvements in the size and quality of disk samples o…
TMT Science and Instruments
David Crampton, Luc Simard, David Silva
To meet the scientific goals of the Thirty Meter Telescope Project, full diffraction-limited performance is required from the outset and hence the entire observatory is being desig…
The impact of galactic properties and environment on the quenching of central and satellite galaxies: A comparison between SDSS, Illustris and L-Galaxies
Asa F. L. Bluck, J. Trevor Mendel, Sara L. Ellison +7
We quantify the impact that a variety of galactic and environmental properties have on the quenching of star formation. We collate a sample of 400,000 central and 100…
The neutral gas content of post-merger galaxies
Sara L. Ellison, Derek Fertig, Jessica L. Rosenberg +4
Measurements of the neutral hydrogen gas content of a sample of 93 post-merger galaxies are presented, from a combination of matches to the ALFALFA.40 data release and new Arecibo…
The Evolution of Stellar Mass in the NICMOS UDF and the CFHTLS Deep Fields
Stephen Gwyn, F. D. A. Hartwick, Anudeep Kanwar +2
We measure the build-up of the stellar mass of galaxies from z=6 to z=1. Using 15 band multicolour imaging data in the NICMOS Ultra Deep Field we derive photometric redshifts and m…
Galaxy Pairs in the Sloan Digital Sky Survey I: Star Formation, AGN Fraction, and the Luminosity/Mass-Metallicity Relation
Sara L. Ellison, David R. Patton, Luc Simard +1
(Abridged). We present a sample of 1716 galaxies with companions within Delta v < 500 km/s, r_p < 80 kpc and stellar mass ratio 0.1 < M_1/M_2 < 10 from the Sloan Digital Sky Survey…
Structural properties of discs and bulges of early-type galaxies
Roelof S. de Jong, Luc Simard, Roger L. Davies +5
We have used the EFAR sample of galaxies to study the light distributions of early-type galaxies. We decompose the 2D light distribution of the galaxies in a flattened spheroidal c…
The Galaxy Populations of X-Ray Detected, Poor Groups
Kim-Vy H. Tran, Luc Simard, Ann I. Zabludoff +1
(Abridged) We determine the quantitative morphology and star formation properties of galaxies in six nearby X-ray detected, poor groups using multi-object spectroscopy and wide-fie…
Evidence for (and Against) Progenitor Bias in the Size Growth of Compact Red Galaxies
Stephanie K. Keating, Roberto G. Abraham, Ricardo P. Schiavon +5
Most massive passive galaxies are compact at high redshifts, but similarly compact massive galaxies are rare in the local universe. The most common interpretation of this phenomeno…
Galaxy Pairs in the Sloan Digital Sky Survey - II: The Effect of Environment on Interactions
Sara L. Ellison, David R. Patton, Luc Simard +3
We use a sample of close galaxy pairs selected from the Sloan Digital Sky Survey Data Release 4 (SDSS DR4) to investigate in what environments galaxy mergers occur and how the resu…
Bulge plus disc and Sérsic decomposition catalogues for 16,908 galaxies in the SDSS Stripe 82 co-adds: A detailed study of the structural measurements
Connor Bottrell, Luc Simard, J. Trevor Mendel +1
Quantitative characterization of galaxy morphology is vital in enabling comparison of observations to predictions from galaxy formation theory. However, without significant overlap…
Galaxies in the Illustris simulation as seen by the Sloan Digital Sky Survey - I: Bulge+disc decompositions, methods, and biases
Connor Bottrell, Paul Torrey, Luc Simard +1
We present an image-based method for comparing the structural properties of galaxies produced in hydrodynamical simulations to real galaxies in the Sloan Digital Sky Survey. The ke…
The InfraRed Imaging Spectrograph (IRIS) for TMT: latest science cases and simulations
Shelley A. Wright, Gregory Walth, Tuan Do +36
The Thirty Meter Telescope (TMT) first light instrument IRIS (Infrared Imaging Spectrograph) will complete its preliminary design phase in 2016. The IRIS instrument design includes…
The Infrared Imaging Spectrograph (IRIS) for TMT: advancing the data reduction system
Gregory L. Walth, Shelley A. Wright, Nils-Erik Rundquist +19
Infrared Imaging Spectrograph (IRIS) is the first light instrument for the Thirty Meter Telescope (TMT) that consists of a near-infrared (0.84 to 2.4 micron) imager and integral fi…
The evolution of early-type galaxies in clusters from z~ 0.8 to z~ 0: the ellipticity distribution and the morphological mix
Benedetta Vulcani, Bianca M. Poggianti, Alan Dressler +10
We present the ellipticity distribution and its evolution for early-type galaxies in clusters from z~0.8 to z~0, based on the WIde-field Nearby Galaxy-cluster Survey (WINGS)(0.04<z…
Quantitative Morphology of Galaxies in the Hubble Deep Field
Francine R. Marleau, Luc Simard
We measure quantitative structural parameters of galaxies in the Hubble Deep Field (HDF) on the drizzled F814W images. Our structural parameters are based on a two-component surfac…
Dark halo response and the stellar initial mass function in early-type and late-type galaxies
Aaron A. Dutton, Charlie Conroy, Frank C. van den Bosch +6
We investigate the origin of the relations between stellar mass and optical circular velocity for early-type (ETG) and late-type (LTG) galaxies --- the Faber-Jackson (FJ) and Tully…
Galaxy pairs in the Sloan Digital Sky Survey - XI. A new method for measuring the influence of the closest companion out to wide separations
David R. Patton, Farid D. Qamar, Sara L. Ellison +5
We describe a statistical approach for measuring the influence that a galaxy's closest companion has on the galaxy's properties out to arbitrarily wide separations. We begin by ide…
A Deep Keck Spectral Survey of Cl0024+1654 at z=0.4
Anne J. Metevier, David C. Koo, Luc Simard +1
We have undertaken a Keck spectral survey of galaxies to R~24 near the central region of Cl0024+1654 at z=0.4. The spectral resolution and slits have been selected to yield kinemat…
Compact groups in theory and practice -- IV. The connection to large-scale structure
J. Trevor Mendel, Sara L. Ellison, Luc Simard +2
We investigate the properties of photometrically-selected compact groups (CGs) in the Sloan Digital Sky Survey. In this paper, the fourth in a series, we focus on understanding the…
The environments of starburst and post-starburst galaxies at z=0.4-0.8
Bianca M. Poggianti, Alfonso Aragon-Salamanca, Dennis Zaritsky +16
Post-starburst (E+A or k+a) spectra, characterized by their exceptionally strong Balmer lines in absorption and the lack of emission lines, belong to galaxies in which the star for…
Galaxies in the Illustris simulation as seen by the Sloan Digital Sky Survey - II: Size-luminosity relations and the deficit of bulge-dominated galaxies in Illustris at low mass
Connor Bottrell, Paul Torrey, Luc Simard +1
The interpretive power of the newest generation of large-volume hydrodynamical simulations of galaxy formation rests upon their ability to reproduce the observed properties of gala…
The Infrared Imaging Spectrograph (IRIS) for TMT: Instrument Overview
James E. Larkin, Anna M. Moore, Elizabeth J. Barton +16
We present an overview of the design of IRIS, an infrared (0.85 - 2.5 micron) integral field spectrograph and imaging camera for the Thirty Meter Telescope (TMT). With extremely lo…
The infrared imaging spectrograph (IRIS) for TMT: sensitivities and simulations
Shelley A. Wright, Elizabeth J. Barton, James E. Larkin +4
We present sensitivity estimates for point and resolved astronomical sources for the current design of the InfraRed Imaging Spectrograph (IRIS) on the future Thirty Meter Telescope…
Tracing Cosmic Evolution with the Las Campanas Distant Cluster Survey
Anthony H. Gonzalez, Julianne J. Dalcanton, Amy E. Nelson +3
The Las Campanas Distant Cluster Survey (LCDCS), which contains over 1000 cluster candidates at z>0.3, is a unique sample with which to probe the evolution of both cluster galaxies…
Observing GRBs with TMT
David Crampton, Luc Simard
The Thirty-Meter Telescope is an ambitious project to build a giant segmented mirror telescope with fully integrated adaptive optics systems that will produce diffraction-limited i…
The InfraRed Imaging Spectrograph (IRIS) for TMT: Overview of innovative science programs
Shelley A. Wright, James E. Larkin, Anna M. Moore +22
IRIS (InfraRed Imaging Spectrograph) is a first light near-infrared diffraction limited imager and integral field spectrograph being designed for the future Thirty Meter Telescope…
The infrared imaging spectrograph (IRIS) for TMT: the science case
Elizabeth J. Barton, James E. Larkin, Anna M. Moore +11
The InfraRed Imaging Spectrograph (IRIS) is a first-light instrument being designed for the Thirty Meter Telescope (TMT). IRIS is a combination of an imager that will cover a 16.4"…
Dynamics of Lyman Break Galaxies and Their Host Halos
James D. Lowenthal, David C. Koo, Luc Simard +1
We present deep two-dimensional spectra of 22 candidate and confirmed Lyman break galaxies (LBGs) at redshifts 2<z<4 in the Hubble Deep Field (HDF) obtained at the Keck II telescop…
Deep learning predictions of galaxy merger stage and the importance of observational realism
Connor Bottrell, Maan H. Hani, Hossen Teimoorinia +7
Machine learning is becoming a popular tool to quantify galaxy morphologies and identify mergers. However, this technique relies on using an appropriate set of training data to be…
The Dependence of Quenching upon the Inner Structure of Galaxies at 0.5<z< 0.8 in the DEEP2/AEGIS Survey
Edmond Cheung, S. M. Faber, David C. Koo +25
The shutdown of star formation in galaxies is generally termed `quenching'. Although quenching may occur through a variety of processes, the exact mechanism(s) that is in fact resp…
The DEEP Groth Strip Survey. I. The Sample
Nicole P. Vogt, David C. Koo, Andrew C. Phillips +18
The Deep Extragalactic Exploratory Probe (DEEP) is a multi-phase research program dedicated to the study of the formation and evolution of galaxies and of large scale structure in…
The InfraRed Imaging Spectrograph (IRIS) for TMT: Reflective ruled diffraction grating performance testing and discussion
Elliot Meyer, Shaojie Chen, Shelley A. Wright +6
We present the efficiency of near-infrared reflective ruled diffraction gratings designed for the InfraRed Imaging Spectrograph (IRIS). IRIS is a first light, integral field spectr…
Universal IMF vs dark halo response in early-type galaxies: breaking the degeneracy with the fundamental plane
Aaron A. Dutton, Andrea V. Maccio', J. Trevor Mendel +1
We use the relations between aperture stellar velocity dispersion (Ï_ap), stellar mass (M_sps), and galaxy size (R_e) for a sample of \sim 150,000 early-type galaxies from SDSS/DR…
Halpha-Derived Star-Formation Rates For Three z ~ 0.75 EDisCS Galaxy Clusters
Rose A. Finn, Dennis Zaritsky, Donald W. McCarthy +6
We present Halpha-derived star-formation rates (SFRs) for three z ~ 0.75 galaxy clusters. Our 1 sigma flux limit corresponds to a star-formation rate of 0.10-0.24 solar mass per ye…
On the Evolution of the Velocity-Mass-Size Relations of Disk-Dominated Galaxies over the Past 10 Billion Years
Aaron A. Dutton, Frank C. van den Bosch, S. M. Faber +10
We study the evolution of the scaling relations between maximum circular velocity, stellar mass and optical half-light radius of star-forming disk-dominated galaxies in the context…
The DEEP Groth Strip Galaxy Redshift Survey. VIII. The Evolution of Luminous Field Bulges at Redshift z ~ 1
David C. Koo, Luc Simard, Christopher N. A. Willmer +11
We present a sample of over 50 luminous field bulges (including ellipticals) found in the Groth Strip Survey (GSS), with 0.73< z < 1.04 and with bulge magnitudes I <= 23. The expon…
Four quasars above redshift 6 discovered by the Canada-France High-z Quasar Survey
Chris J. Willott, Philippe Delorme, Alain Omont +15
The Canada-France High-z Quasar Survey (CFHQS) is an optical survey designed to locate quasars during the epoch of reionization. In this paper we present the discovery of the first…
The infrared imaging spectrograph (IRIS) for TMT: spectrograph design
Anna M. Moore, Brian J. Bauman, Elizabeth J. Barton +6
The Infra-Red Imaging Spectrograph (IRIS) is one of the three first light instruments for the Thirty Meter Telescope (TMT) and is the only one to directly sample the diffraction li…
The relation between star formation, morphology and local density in high redshift clusters and groups
Bianca M. Poggianti, Vandana Desai, Rose Finn +17
We investigate how the [OII] properties and the morphologies of galaxies in clusters and groups at z=0.4-0.8 depend on projected local galaxy density, and compare with the field at…
Rest-Frame Ultraviolet to Near Infrared Observations of an Interacting Lyman Break Galaxy at z = 4.42
Joshua D. Younger, Jia-Sheng Huang, Giovanni G. Fazio +11
We present the rest-frame ultraviolet through near infrared spectral energy distribution for an interacting Lyman break galaxy at a redshift z=4.42, the highest redshift merging sy…
SITELLE: An Imaging Fourier Transform Spectrometer for the Canada-France-Hawaii Telescope
Laurent Drissen, Thomas Martin, Laurie Rousseau-Nepton +11
We present an overview of SITELLE, an Imaging Fourier Transform Spectrometer (iFTS) available at the 3.6-meter Canada-France-Hawaii Telescope. SITELLE is a Michelson-type interfero…
Prospects for measuring supermassive black hole masses with future extremely large telescopes
Tuan Do, Shelley A. Wright, Aaron J. Barth +6
The next generation of giant-segmented mirror telescopes ( 20 m) will enable us to observe galactic nuclei at much higher angular resolution and sensitivity than ever before. Th…
The DEEP Groth Strip Survey IX: Evolution of the Fundamental Plane of Field Galaxies
Karl Gebhardt, S. M. Faber, David C. Koo +8
Fundamental Plane studies provide an excellent means of understanding the evolutionary history of early-type galaxies. Using the Low Resolution Imaging Spectrograph on the Keck tel…
The DEEP Groth Strip Survey VII: The Metallicity of Field Galaxies at 0.26<z<0.82 and the Evolution of the Luminosity-Metallicity Relation
Henry A. Kobulnicky, Christopher N. A. Willmer, Benjamin J. Weiner +6
Using spectroscopic data from the Deep Extragalactic Evolutionary Probe (DEEP) Groth Strip survey (DGSS), we analyze the gas-phase oxygen abundances in the warm ionized medium for…
A Pilot Study of the Tully-Fisher Relation in Cl0024+1654 at z=0.4
Anne J. Metevier, David C. Koo, Luc Simard
We present the first determination of the Tully-Fisher relation (TFR) for a distant galaxy cluster. We have measured internal kinematics of seven members of Cl0024+1654 from spatia…
Are There Blue, Massive E/S0s at z < 1 ?: Kinematics of Blue Spheroidal Galaxy Candidates
Myungshin Im, S. M. Faber, Karl Gebhardt +5
Several recent studies find that 10 - 50% of morphologically selected field early-type galaxies at redshifts z <= 1 have blue colors indicative of recent star formation. Such ``blu…
The Tully-Fisher Relation in Cluster Cl0024+1654 at z=0.4
Anne J. Metevier, David C. Koo, Luc Simard +1
Using moderate-resolution Keck spectra, we have examined the velocity profiles of 15 members of cluster Cl0024+1654 at z=0.4. WFPC2 images of the cluster members have been used to…
Spectrum-free integrated photonic remote molecular identification and sensing
Ross Cheriton, Suresh Sivanandam, Adam Densmore +11
Absorption spectroscopy is widely used in sensing and astronomy to understand molecular compositions on microscopic to cosmological scales. However, typical dispersive spectroscopi…
The Infrared Imaging Spectrograph (IRIS) for TMT: Instrument Overview
James E. Larkin, Anna M. Moore, Shelley A. Wright +14
IRIS is a near-infrared (0.84 to 2.4 microns) integral field spectrograph and wide-field imager being developed for first light with the Thirty Meter (TMT). It mounts to the advanc…
What shapes a galaxy? - Unraveling the role of mass, environment and star formation in forming galactic structure
Asa F. L. Bluck, Connor Bottrell, Hossen Teimoorinia +9
We investigate the dependence of galaxy structure on a variety of galactic and environmental parameters for ~500,000 galaxies at z<0.2, taken from the Sloan Digital Sky Survey data…
The Infrared Imaging Spectrograph (IRIS) for TMT: Data Reduction System
Gregory Walth, Shelley A. Wright, Jason Weiss +15
IRIS (InfraRed Imaging Spectrograph) is the diffraction-limited first light instrument for the Thirty Meter Telescope (TMT) that consists of a near-infrared (0.84 to 2.4 m) ima…
The infrared imaging spectrograph (IRIS) for TMT: on-instrument wavefront sensors and NFIRAOS interface
David Loop, Vlad Reshetov, Murray Fletcher +10
The InfraRed Imaging Spectrograph (IRIS) is a first light client science instrument for the TMT observatory that operates as a client of the NFIRAOS facility multi-conjugate adapti…
Compact groups in theory and practice - III. Compact groups of galaxies in the Sixth Data Release of the Sloan Digital Sky Survey
Alan McConnachie, David Patton, Sara Ellison +1
We present the largest publicly available catalogue of compact groups of galaxies identified using the original selection criteria of Hickson, selected from the Sixth Data Release…
The build-up of the colour-magnitude relation in galaxy clusters since z~0.8
Gabriella De Lucia, Bianca M. Poggianti, Alfonso Aragon-Salamanca +11
Using galaxy clusters from the ESO Distant Cluster Survey, we study how the distribution of galaxies along the colour-magnitude relation has evolved since z~0.8. While red-sequence…
Why do galaxies stop forming stars? I. The passive fraction - black hole mass relation for central galaxies
Asa F. L. Bluck, Sara L. Ellison, David R. Patton +5
We derive the dependence of the fraction of passive central galaxies on the mass of their supermassive black holes for a sample of over 400,000 SDSS galaxies at z < 0.2. Our large…
The Infrared Imaging Spectrograph (IRIS) for TMT: Instrument Overview
Anna M. Moore, James E. Larkin, Shelley A. Wright +31
We present an overview of the design of IRIS, an infrared (0.84 - 2.4 micron) integral field spectrograph and imaging camera for the Thirty Meter Telescope (TMT). With extremely lo…
Internal Kinematics of Galaxies at z=0.25-0.45
Luc Simard, Christopher J. Pritchet
Low-mass starbursting galaxies have been proposed as the explanation of the excess of faint galaxies observed at intermediate redshifts. If this hypothesis is correct, then interme…
Near-Infrared Survey and Photometric Redshifts in the Extended GOODS-North field
Li-Ting Hsu, Lihwai Lin, Mark Dickinson +22
We present deep and -band images in the extended Great Observatories Origins Deep Survey-North (GOODS-N) field covering an area of 0.22 . The observations were…
Stellar mass functions of galaxies, disks and spheroids at z~0.1
Karun Thanjavur, Luc Simard, Asa F. L. Bluck +1
We present the stellar mass functions (SMF) and mass densities of galaxies, and their spheroid and disk components in the local (z~0.1) universe over the range 8.9 <= log(M/M_solar…
CL 1358+62: Characterizing the Physical Properties of Cluster Galaxies at z=0.33
Kim-Vy Tran, Luc Simard, Garth Illingworth +1
[Abridged] We examine the physical properties of 173 cluster members in CL1358+62 (z=0.33) from HST WFPC2 imaging taken in the F606W & F814W filters (rest-frame B & V) over a 2.2x2…
The signature of dissipation in the mass-size relation: are bulges simply spheroids wrapped in a disc?
Trystyn A. M. Berg, Luc Simard, J. Trevor Mendel +1
The relation between the stellar mass and size of a galaxy's structural subcomponents, such as discs and spheroids, is a powerful way to understand the processes involved in their…
The impact of gas inflows on star formation rates and metallicities in barred galaxies
Sara L. Ellison, Preethi Nair, David R. Patton +3
The star formation rates (SFRs) and metallicities of a sample of 294 galaxies with visually classified, strong, large-scale bars are compared to a control sample of unbarred disk g…
Constraints On the Size Evolution of Brightest Cluster Galaxies
Amy E. Nelson, Luc Simard, Dennis Zaritsky +2
We measure the luminosity profiles of 16 brightest cluster galaxies (BCGs) at using high resolution F160W NICMOS and F814W WFPC2 HST imaging. The heterogeneous samp…
Spatially resolved star formation and metallicity profiles in post-merger galaxies from MaNGA
Mallory D. Thorp, Sara L. Ellison, Luc Simard +2
Large galaxy surveys have demonstrated that galaxy-galaxy mergers can dramatically change the morphologies, star formation rates (SFRs) and metallicities of their constituents. How…
The Infrared Imaging Spectrograph (IRIS) for TMT: closed-loop adaptive optics while dithering
Edward L. Chapin, Jennifer Dunn, David Andersen +17
The InfraRed Imaging Spectrograph (IRIS) is the first-light client instrument for the Narrow Field Infrared Adaptive Optics System (NFIRAOS) on the Thirty Meter Telescope (TMT). IR…
Colours of Bulges and Discs within Galaxy Clusters and the Signature of Disc Fading on Infall
Michael J. Hudson, Jeffrey B. Stevenson, Russell J. Smith +3
The origins of the bulge and disc components of galaxies are of primary importance to understanding galaxy formation. Here bulge-disc decomposition is performed simultaneously in B…
Evolution of the Early-Type Galaxy Fraction in Clusters since z = 0.8
Luc Simard, Douglas Clowe, Vandana Desai +13
We study the morphological content of a large sample of high-redshift clusters to determine its dependence on cluster mass and redshift. Quantitative morphologies are based on bulg…
Clues to the Origin of the Mass-Metallicity Relation: Dependence on Star Formation Rate and Galaxy Size
Sara L. Ellison, David R. Patton, Luc Simard +1
We use a sample of 43,690 galaxies selected from the Sloan Digital Sky Survey Data Release 4 to study the systematic effects of specific star formation rate (SSFR) and galaxy size…
Colors of Luminous Bulges in Cluster MS1054-03 and Field Galaxies at Redshifts z ~ 0.83
David C. Koo, Susmita Datta, Christopher N. A. Willmer +3
Using HST images, we separate the bulge-like (pbulge) and disk-like (pdisk) components of 71 galaxies in the rich cluster MS1054-03 and of 21 in the field. Our key finding is that…
Gemini Infrared Multi-Object Spectrograph: Instrument Overview
Suresh Sivanandam, Scott Chapman, Luc Simard +27
The Gemini Infrared Multi-Object Spectrograph (GIRMOS) is a powerful new instrument being built to facility-class standards for the Gemini telescope. It takes advantage of the late…
The Infrared Imaging Spectrograph (IRIS) for TMT: the atmospheric dispersion corrector
Andrew C. Phillips, Brian J. Bauman, James E. Larkin +4
We present a conceptual design for the atmospheric dispersion corrector (ADC) for TMT's Infrared Imaging Spectrograph (IRIS). The severe requirements of this ADC are reviewed, as a…
Frequency and properties of bars in cluster and field galaxies at intermediate redshifts
Fabio D. Barazza, Pascale Jablonka, Vandana Desai +15
We present a study of large-scale bars in field and cluster environments out to redshifts of ~0.8 using a final sample of 945 moderately inclined disk galaxies drawn from the EDisC…
Disc colours in field and cluster spiral galaxies at 0.5 < z < 0.8
Nicolas Cantale, Pascale Jablonka, Frederic Courbin +9
We present a detailed study of the colours in late-type galaxy discs for ten of the EDisCS galaxy clusters with 0.5 < z < 0.8. Our cluster sample contains 172 spiral galaxies, and…
The Infrared Imaging Spectrograph (IRIS) for TMT: Volume phase holographic grating performance testing and discussion
Shaojie Chen, Elliot Meyer, Shelley A. Wright +5
Maximizing the grating efficiency is a key goal for the first light instrument IRIS (Infrared Imaging Spectrograph) currently being designed to sample the diffraction limit of the…
The Rest-Frame Optical Luminosity Function of Cluster Galaxies at z<0.8 and the Assembly of the Cluster Red Sequence
Gregory Rudnick, Anja von der Linden, Roser Pello +12
We present the rest-frame optical luminosity function (LF) of red sequence galaxies in 16 clusters at 0.4<z<0.8 drawn from the ESO Distant Cluster Survey (EDisCS). We compare our c…
Automated Morphological Classification of SDSS Red Sequence Galaxies
Judy Y. Cheng, S. M. Faber, Luc Simard +4
(abridged) In the last decade, the advent of enormous galaxy surveys has motivated the development of automated morphological classification schemes to deal with large data volumes…
The Detailed Science Case for the Maunakea Spectroscopic Explorer: the Composition and Dynamics of the Faint Universe
Alan McConnachie, Carine Babusiaux, Michael Balogh +173
MSE is an 11.25m aperture observatory with a 1.5 square degree field of view that will be fully dedicated to multi-object spectroscopy. More than 3200 fibres will feed spectrograph…
A Relationship between Supermassive Black Hole Mass and the Total Gravitational Mass of the Host Galaxy
Kaushala Bandara, David Crampton, Luc Simard
We investigate the correlation between the mass of a central supermassive black hole and the total gravitational mass of the host galaxy (M_tot). The results are based on 43 galaxy…
Canada and the SKA from 2020-2030
Kristine Spekkens, Cynthia Chiang, Roland Kothes +57
This white paper submitted for the 2020 Canadian Long-Range Planning process (LRP2020) presents the prospects for Canada and the Square Kilometre Array (SKA) from 2020-2030, focuss…
A search for the first massive galaxy clusters
Chris J. Willott, David Crampton, John B. Hutchings +5
We have obtained deep, multi-band imaging observations around three of the most distant known quasars at redshifts z>6. Standard accretion theory predicts that the supermassive bla…
The DEEP Groth Strip Survey XII: The Metallicity of Field Galaxies at 0.26<z<0.82 and the Evolution of the Luminosity-Metallicity Relation
Henry A. Kobulnicky, Christopher N. A. Willmer, Benjamin J. Weiner +6
Using spectroscopic data from the Deep Extragalactic Evolutionary Probe (DEEP) Groth Strip survey (DGSS), we analyze the gas-phase oxygen abundances for 56 emission-line field gala…
Gas flows in galaxies: the relative importance of mergers and bars
Sara L. Ellison, David R. Patton, Preethi Nair +4
Galaxy-galaxy interactions and large scale galaxy bars are usually considered as the two main mechanisms for driving gas to the centres of galaxies. By using large samples of galax…
Clustering properties of BzK-selected galaxies in GOODS-N: environmental quenching and triggering of star formation at z ~ 2
Lihwai Lin, Mark Dickinson, Hung-Yu Jian +19
Using a sample of BzK-selected galaxies at z~2 identified from the CFHT/WIRCAM near-infrared survey of GOODS-North, we discuss the relation between star formation rate (SFR), speci…
CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey
Norman A. Grogin, Dale D. Kocevski, S. M. Faber +104
The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) is designed to document the first third of galactic evolution, over the approximate redshift (z) range…
AEGIS: The Morphologies of Green Galaxies at 0.4<z<1.2
Alexander J. Mendez, Alison L. Coil, Jennifer Lotz +3
We present quantitative morphologies of ~300 galaxies in the optically-defined green valley at 0.4<z<1.2, in order to constrain the mechanism(s) responsible for quenching star form…
Galaxy Pairs in the Sloan Digital Sky Survey - III: Evidence of Induced Star Formation from Optical Colours
David R. Patton, Sara L. Ellison, Luc Simard +2
We have assembled a large, high quality catalogue of galaxy colours from the Sloan Digital Sky Survey Data Release 7, and have identified 21,347 galaxies in pairs spanning a range…
CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey - The Hubble Space Telescope Observations, Imaging Data Products and Mosaics
Anton M. Koekemoer, S. M. Faber, Henry C. Ferguson +120
This paper describes the Hubble Space Telescope imaging data products and data reduction procedures for the Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey (CANDELS). This…
Discovery of a dual active galactic nucleus with ~ 8 kpc separation
Sara L. Ellison, Nathan J. Secrest, J. Trevor Mendel +2
Targeted searches for dual active galactic nuclei (AGN), with separations 1 -- 10 kpc, have yielded relatively few successes. A recent pilot survey by Satyapal et al. has demonstra…
Bulge mass is king: The dominant role of the bulge in determining the fraction of passive galaxies in the Sloan Digital Sky Survey
Asa F. L. Bluck, J. Trevor Mendel, Sara L. Ellison +4
We investigate the origin of galaxy bimodality by quantifying the relative role of intrinsic and environmental drivers to the cessation (or `quenching') of star formation in over h…
A catalog of bulge, disk, and total stellar mass estimates for the Sloan Digital Sky Survey
J. Trevor Mendel, Luc Simard, Michael Palmer +2
We present a catalog of bulge, disk, and total stellar mass estimates for ~660,000 galaxies in the Legacy area of the Sloan Digital Sky Survey Data Release 7. These masses are base…
The mass-metallicity relation in galaxy clusters: the relative importance of cluster membership versus local environment
Sara L. Ellison, Luc Simard, Nicolas B. Cowan +3
Using a large (14,857), homogenously selected sample of cluster galaxies identified in the Sloan Digital Sky Survey Data Release 4 (SDSS DR4), we investigate the impact of cluster…
The DEEP Groth Strip Galaxy Redshift Survey. III. Redshift Catalog and Properties of Galaxies
Benjamin J. Weiner, Andrew C. Phillips, S. M. Faber +16
The Deep Extragalactic Evolutionary Probe (DEEP) is a series of spectroscopic surveys of faint galaxies, targeted at the properties and clustering of galaxies at redshifts z ~ 1. W…
Towards a physical picture of star-formation quenching: the photometric properties of recently-quenched galaxies in the Sloan Digital Sky Survey
J. Trevor Mendel, Luc Simard, Sara L. Ellison +1
We select a sample of young passive galaxies from the Sloan Digital Sky Survey Data Release 7 in order to study the processes that quench star formation in the local universe. Quen…
Imaging of SDSS z>6 quasar fields: gravitational lensing, companion galaxies and the host dark matter halos
Chris J. Willott, Will J. Percival, Ross J. McLure +5
We have undertaken deep optical imaging observations of three 6.2<z<6.5 quasar fields in the i' and z' filters. These data are used to search for foreground galaxies which are grav…
Evidence for a non-universal stellar initial mass function in low-redshift high-density early-type galaxies
Aaron A. Dutton, J. Trevor Mendel, Luc Simard
We determine an absolute calibration of stellar mass-to-light ratios for the densest \simeq 3% of early-type galaxies in the local universe (redshift z\simeq 0.08) from SDSS DR7. T…