Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.6k papers
- University of California, BerkeleyUS2.5k papers
- The Ohio State UniversityUS2.3k papers
- University of ArizonaUS2.1k papers
- Lawrence Berkeley National LaboratoryUS2.1k papers
- SLAC National Accelerator LaboratoryUS2k papers
- University of California, IrvineUS2k papers
- Yale UniversityUS1.9k papers
- University of Wisconsin–MadisonUS1.9k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.9k papers
- McGill UniversityCA1.9k papers
- University of ChicagoUS1.9k papers
154 papers · 2 filters
The Orion Nebula in the mid-IR
M. Robberto, S. V. W. Beckwith, N. Panagia +6
We present two wide-field (5'x5'), diffraction limited, broad-band 10 and 20 micron images of the Orion Nebula, plus six 7-13 micron narrow-band images of BN/KL taken at the 3.8m U…
The Importance of Intergalactic Structure to Gravitationally Lensed Quasars
R. Benton Metcalf
Image flux ratio anomalies have been attributed to substructures within the gravitational lens and to small mass halos (M <~ 10^10 Msun) in intergalactic space. In this paper, anal…
Stellar Bowshocks in the Northern Arm of the Galactic Center: More Members and Kinematics of the Massive Star Population
A. M. Tanner, A. M. Ghez, M. Morris +1
We present new 2.2 micron diffraction-limited images from the W. M. Keck 10 m and Gemini 8 m telescopes of the cool Galactic Center sources, IRS 1W, 5, 8, 10W, and 21 along with ne…
The Deep2 Galaxy Redshift Survey: Evolution of Close Galaxy Pairs and Major-Merger Rates Up to z ~ 1.2
Lihwai Lin, David C. Koo, Christopher N. A. Willmer +10
We derive the close, kinematic pair fraction and merger rate up to z ~ 1.2 from the initial data of the DEEP2 Redshift Survey. Assuming a mild luminosity evolution, the number of c…
The Luminosity Functions of the Galaxy Cluster MS1054-0321 at z=0.83 based on ACS Photometry
Tomotsugu Goto, Marc Postman, Nicholas J. G. Cross +41
We present new measurements of the galaxy luminosity function (LF) and its dependence on local galaxy density, color, morphology, and clustocentric radius for the massive z=0.83 cl…
Simulations of Dust in Interacting Galaxies
Patrik Jonsson, T. J. Cox, Joel R. Primack
A new Monte-Carlo radiative-transfer code, Sunrise, is used to study the effects of dust in N-body/hydrodynamic simulations of interacting galaxies. Dust has a profound effect on t…
The Ages of Elliptical Galaxies from Mid-Infrared Emission
Pasquale Temi, William G. Mathews, Fabrizio Brighenti
The mid-infrared (10-20 um) luminosity of elliptical galaxies is dominated by the integrated emission from circumstellar dust in red giant stars. As a single stellar population evo…
Confirmation of Errors in Hipparcos Parallaxes from HST/FGS Astrometry of the Pleiades
David R. Soderblom, Ed Nelan, G. Fritz Benedict +4
We present absolute trigonometric parallaxes and relative proper motions for three members of the Pleiades star cluster, obtained with HST's Fine Guidance Sensor 1r, a white-light…
The Transformation of Cluster Galaxies at Intermeidate Redshift
N. L. Homeier, R. Demarco, P. Rosati +17
We combine imaging data from the Advanced Camera for Surveys (ACS) with VLT/FORS optical spectroscopy to study the properties of star-forming galaxies in the z=0.837 cluster CL0152…
A Resolved Debris Disk around the G2V star HD 107146
D. R. Ardila, D. A. Golimowski, J. E. Krist +6
We present resolved scattered-light images of the debris disk around HD 107146, a G2 star 28.5 pc from the Sun. This is the first debris disk to be resolved in scattered light arou…
An Off-Axis Model for GRB 031203
Enrico Ramirez-Ruiz, Jonathan Granot, Chryssa Kouveliotou +3
The low luminosity radio emission of the unusually faint GRB 031203 has been argued to support the idea of a class of intrinsically sub-energetic gamma-ray bursts (GRBs), currently…
The Centers of Early-Type Galaxies with HST. V. New WFPC2 Photometry
Tod R. Lauer, S. M. Faber, Karl Gebhardt +14
We analyze HST+WFPC2 images of 77 early-type galaxies. Brightness profiles are classed into "core" or "power-law" forms. Cores are typically rounder than power-law galaxies. Nearly…
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…
Survey for Galaxies Associated with z~3 Damped Lyman alpha Systems I: Spectroscopic Calibration of u'BVRI Photometric Selection
J. Cooke, A. M. Wolfe, J. X. Prochaska +1
We present a survey for z~3 Lyman break galaxies (LBGs) associated with damped Lyman alpha systems (DLAs) with the primary purpose of determining the DLA-LBG cross-correlation. Thi…
The Chemical Properties of Milky Way and M31 Globular Clusters: II. Stellar Population Model Predictions
Michael A. Beasley, Jean P. Brodie, Jay Strader +4
We derive ages, metallicities and [alpha/Fe] ratios from the integrated spectra of 23 globular clusters in M31, by employing multivariate fits to two stellar population models. In…
Internal Kinematics of Luminous Compact Blue Galaxies
Matthew A. Bershady, M. Vils, C. Hoyos +2
We describe the dynamical properties which may be inferred from HST/STIS spectroscopic observations of luminous compact blue galaxies (LCBGs) between 0.1<z<0.7. While the sample is…
The Core of NGC 6240 from Keck Adaptive Optics and HST NICMOS Observations
C. E. Max, G. Canalizo, B. A. Macintosh +4
We present results of near infrared imaging of the disk-galaxy-merger NGC 6240 using adaptive optics on the Keck II Telescope and reprocessed archival data from NICMOS on the Hubbl…
1E 1740.7-2942: temporal and spectral evolution from INTEGRAL and RXTE observations
M. Del Santo, A. Bazzano, A. A. Zdziarski +13
We present results of the monitoring of the black hole candidate 1E 1740.7-2942 with INTEGRAL, in combination with simultaneous observations by RXTE. We concentrate on broad-band s…
Dust and Ionized Gas in Nine Nearby Early-Type Galaxies Imaged with the HST Advanced Camera for Surveys
A. R. Martel, H. C. Ford, L. D. Bradley +6
We present and continuum images and H+[N II] maps of nine early-type galaxies observed with the Wide Field Channel of the Advanced Camera for Surveys on the Hubble Space…
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…
The Nature of Blue Cores in Spheroids: a Possible Connection with AGN and Star Formation
Felipe Menanteau, Andre R. Martel, Paolo Tozzi +9
We investigate the physical nature of blue cores in early-type galaxies through the first multi-wavelength analysis of a serendipitously discovered field blue-nucleated spheroid in…
On the Incidence and Kinematics of Strong Mg II Absorbers
Gabriel E. Prochter, Jason X. Prochaska, Scott Burles
We present the results of two investigations into the nature of strong (rest equivalent width > 1.0 Ang) Mg II absorption systems at high redshift. The first line of questioning ex…
Simulations of Strong Gravitational Lensing with Substructure
Adam Amara, R. Benton Metcalf, Thomas J. Cox +1
Galactic sized gravitational lenses are simulated by combining a cosmological N-body simulation and models for the baryonic component of the galaxy. The lens caustics, critical cur…
Confronting cosmological simulations with observations of intergalactic metals
Anthony Aguirre, Joop Schaye, Lars Hernquist +3
Using the statistics of pixel optical depths, we compare HI, CIV and CIII absorption in a set of six high quality z ~ 3-4 quasar absorption spectra to that in spectra drawn from tw…