Publications (31)
Using H-alpha Morphology and Surface Brightness Fluctuations to Age-Date Star Clusters in M83
Bradley C. Whitmore, Rupali Chandar, Hwihyun Kim +21
We use new WFC3 observations of the nearby grand design spiral galaxy M83 to develop two independent methods for estimating the ages of young star clusters. The first method uses t…
Calibrating stellar population models with Magellanic Cloud star clusters
Noelia E. D. Noel, Laura Greggio, Alvio Renzini +2
Stellar population models are commonly calculated using star clusters as calibrators for those evolutionary stages that depend on free parameters. However, discrepancies exist amon…
Stacking the Cosmic Web in Fluorescent Lyman alpha Emission with MUSE
Sofia G. Gallego, Sebastiano Cantalupo, Simon Lilly +12
Cosmological simulations suggest that most of the matter in the Universe is distributed along filaments connecting galaxies. Illuminated by the cosmic UV background (UVB), these st…
The Luminosity, Mass, and Age Distributions of Compact Star Clusters in M83 Based on HST/WFC3 Observations
Rupali Chandar, Bradley C. Whitmore, Hwihyun Kim +21
The newly installed Wide Field Camera 3 (WFC3) on the Hubble Space Telescope has been used to obtain multi-band images of the nearby spiral galaxy M83. These new observations are t…
Dynamical Modeling of Velocity Profiles: The Dark Halo Around the Elliptical Galaxy NGC2434
Hans-Walter Rix, Tim de Zeeuw, Marcella Carollo +2
We describe a powerful technique to model and interpret the stellar line-of-sight velocity profiles of galaxies. Following Schwarzschild's modeling approach, a representative libra…
The MUSE Hubble Ultra Deep Field Survey: I. Survey description, data reduction and source detection
Roland Bacon, Simon Conseil, David Mary +24
We present the MUSE Hubble Ultra Deep Survey, a mosaic of nine MUSE fields covering 90\% of the entire HUDF region with a 10-hour deep exposure time, plus a deeper 31-hour exposure…
Mass and Environment as Drivers of Galaxy Evolution II: The quenching of satellite galaxies as the origin of environmental effects
Yingjie Peng, Simon J. Lilly, Alvio Renzini +1
We extend the phenomenological study of the evolving galaxy population of Peng et al (2010) to the central/satellite dichotomy in Yang et al. SDSS groups. We find that satellite ga…
Star Formation at From the Spitzer Large Area Survey with Hyper-Suprime-Cam (SPLASH)
Charles L. Steinhardt, Josh S. Speagle, Peter Capak +21
Using the first 50% of data collected for the Spitzer Large Area Survey with Hyper-Suprime-Cam (SPLASH) observations on the 1.8 deg Cosmological Evolution Survey (COSMOS) we es…
WFC3 grism confirmation of the distant cluster Cl J1449+0856 at z=2.00: Quiescent and star-forming galaxy populations
Raphael Gobat, Veronica Strazzullo, Emanuele Daddi +7
We present deep Hubble Space Telescope Wide Field Camera 3 slitless spectroscopic observations of the distant cluster Cl J1449+0856. These cover a single pointing with 18 orbits of…
On the intermediate-redshift central stellar mass-halo mass relation, and implications for the evolution of the most massive galaxies since z~1
Francesco Shankar, Hong Guo, Vincent Bouillot +20
The stellar mass-halo mass relation is a key constraint in all semi-analytic, numerical, and semi-empirical models of galaxy formation and evolution. However, its exact shape and r…
Discovery of Massive, Mostly Star-formation Quenched Galaxies with Extremely Large Lyman-alpha Equivalent Widths at z ~ 3
Yoshiaki Taniguchi, Masaru Kajisawa, Masakazu A. R. Kobayashi +21
We report a discovery of 6 massive galaxies with both extremely large Lya equivalent width and evolved stellar population at z ~ 3. These MAssive Extremely STrong Lya emitting Obje…
Evolution of the Bar Fraction in COSMOS: Quantifying the Assembly of the Hubble Sequence
Kartik Sheth, Debra Meloy Elmegreen, Bruce G. Elmegreen +13
We have analyzed the redshift-dependent fraction of galactic bars over 0.2<z<0.84 in 2,157 luminous face-on spiral galaxies from the COSMOS 2-square degree field. Our sample is an…
The MUSE-Wide survey: A measurement of the Ly emitting fraction among galaxies
Joseph Caruana, Lutz Wisotzki, Edmund Christian Herenz +15
We present a measurement of the fraction of Lyman (Ly) emitters () amongst HST continuum-selected galaxies at with the Multi-Unit Spectroscopic Exp…
Star Formation and Metal Production as a Function of Redshift: The Role of the Multi-Phase ISM
Marco Spaans, Marcella Carollo
We present models of the cosmological star formation and metal production history of (proto-)galaxies with varying axis ratios. More massive and/or roughly spherical systems reach…
The MUSE Hubble Ultra Deep Field Survey X. Ly Equivalent Widths at
Takuya Hashimoto, Thibault Garel, Bruno Guiderdoni +17
We present rest-frame Ly equivalent widths (EW) of 417 Ly emitters (LAEs) detected with Multi Unit Spectroscopic Explorer (MUSE) on the Very Large Telescope (VLT) at $2.9 <…
The MUSE Hubble Ultra Deep Field Survey VIII : Extended Lyman-alpha haloes around high-redshift star-forming galaxies
Floriane Leclercq, Roland Bacon, Lutz Wisotzki +17
We report the detection of extended Lyman-alpha (Lya) haloes around 145 individual star-forming galaxies at redshifts 3<z<6 in the Hubble Ultra Deep Field observed with the Multi-U…
The X-Ray Zurich Environmental Study (X-ZENS). II. X-ray Observations of the Diffuse Intragroup Medium in Galaxy Groups
Francesco Miniati, Alexis Finoguenov, John D. Silverman +4
We present the results of a pilot XMM- and program aimed at studying the diffuse intragroup medium (DIM) of optically-selected nearby groups from the Zurinch ENvi…
Pseudobulge Formation as a Dynamical Rather than a Secular Process
Javiera Guedes, Lucio Mayer, Marcella Carollo +1
We investigate the formation and evolution of the pseudobulge in "Eris", a high-resolution N-body + smoothed particle hydrodynamics (SPH) cosmological simulation that successfully…
The Chandra COSMOS Survey, I: Overview and Point Source Catalog
Martin Elvis, Francesca Civano, Cristian Vignali +40
The Chandra COSMOS Survey (C-COSMOS) is a large, 1.8 Ms, Chandra} program that has imaged the central 0.5 sq.deg of the COSMOS field (centered at 10h, +02deg) with an effective exp…
Effective Star Formation Rates for Cosmological Applications
Marco Spaans, Marcella Carollo
Effective star formation rates in tabular form are computed which yield a prescription for the star formation activity in model galaxies as a function of ambient density, metallici…
Cusps in CDM halos
Juerg Diemand, Marcel Zemp, Ben Moore +2
We resolve the inner region of a massive cluster forming in a cosmological LCDM simulation with a mass resolution of 2*10^6 Msun and before z=4.4 even 3*10^5 Msun. This is a billio…
In and out star formation in z~1.5 quiescent galaxies from rest-frame UV spectroscopy and the far-infrared
Raphael Gobat, Emanuele Daddi, Veronica Strazzullo +18
We present a sample of 34 spectroscopically confirmed BzK-selected ~1e11 Msun quiescent galaxies (pBzK) in the COSMOS field. The targets were initially observed with VIMOS on the V…
Supernova Remnants and the Interstellar Medium of M83: Imaging & Photometry with WFC3 on HST
Michael A. Dopita, William P. Blair, Knox S. Long +23
We present Wide Field Camera 3 images taken with the Hubble Space Telescope within a single field in the southern grand design star-forming galaxy M83. Based on their size, morphol…
Ionised gas structure of 100 kpc in an over-dense region of the galaxy group COSMOS-Gr30 at z ~ 0.7
Benoît Epinat, Thierry Contini, Hayley Finley +16
We report the discovery of a 10^4 kpc^2 gaseous structure detected in [OII] in an over-dense region of the COSMOS-Gr30 galaxy group at z~0.725 thanks to deep MUSE Guaranteed Time O…
The UDF05 Follow-up of the Hubble Ultra Deep Field. III. The Luminosity Function at z~6
Jian Su, Massimo Stiavelli, Pascal Oesch +13
In this paper, we present a derivation of the rest-frame 1400A luminosity function (LF) at redshift six from a new application of the maximum likelihood method by exploring the fiv…
Large-scale shock-ionized and photo-ionized gas in M83: the impact of star formation
Sungryong Hong, Daniela Calzetti, Michael A. Dopita +20
We investigate the ionization structure of the nebular gas in M83 using the line diagnostic diagram, [O III](5007 \degA)/Hβ vs. [S II](6716 °A+6731 °A)/Hα with the newly availa…
Can galactic nuclei be non-axisymmetric? --- The parameter space of power-law discs
HongSheng Zhao, Marcella Carollo, Tim de Zeeuw
The shape of a cusped galactic nucleus is constrained by the range of shapes of orbits in its gravitational potential. It is shown for scale-free non-axisymmetric discs that while…
Large stellar disks in small elliptical galaxies
Hans-Walter Rix, Marcella Carollo, Ken Freeman
We present the rotation velocities V and velocity dispersions sigma along the principal axes of seven elliptical galaxies less luminous than M_B= -19.5. These kinematics extend bey…
The fate of high redshift massive compact galaxies in dense environments
Tobias Kaufmann, Lucio Mayer, Marcella Carollo +1
Massive compact galaxies seem to be more common at high redshift than in the local universe, especially in denser environments. To investigate the fate of such massive galaxies ide…
A phenomenological approach to the evolution of galaxies
Simon Lilly, Ying-jie Peng, Marcella Carollo +1
Increasingly good statistical data on the galaxy population at high and low redshift enable the development of new phenomenological approaches to galaxy evolution based on applicat…
The early early type: discovery of a passive galaxy at z=3
Raphaël Gobat, Veronica Strazzullo, Emanuele Daddi +6
We present the discovery of a massive, quiescent galaxy at z=2.99. We have obtained a HST/WFC3 spectrum of this object and measured its redshift from the detection of a deep 4000A…