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
30 papers · 2 filters
Autofib Redshift Survey - I. Evolution of the Galaxy Luminosity Function
Richard S. Ellis, Matthew Colless, Tom Broadhurst +2
We present a detailed determination of the restframe B-band galaxy luminosity function (LF) as a function of redshift and star formation activity from z=0 to z=0.75. The dataset us…
Gasdynamics and Starbursts in Major Mergers
Chris Mihos, Lars Hernquist
Using numerical simulation, we study the development of gaseous inflows and triggering of starburst activity in mergers of comparable-mass disk galaxies. In all encounters studied,…
Cluster Cores, Gravitational Lensing, and Cosmology
Ricardo A. Flores, Joel R. Primack
Many multiply--imaged quasars have been found over the years, but none so far with image separation in excess of $8\arcsec$. The absence of such large splittings has been used as a…
Small Scale Structure and High Redshift HI
David H. Weinberg, Lars Hernquist, Neal Katz +1
Cosmological simulations with gas dynamics suggest that the Lyman-alpha forest is produced mainly by "small scale structure" --- filaments and sheets that are the high redshift ana…
Strong Angular Clustering of Very Blue Galaxies: Evidence of a Low Redshift Population
Stephen D. Landy, Alexander S. Szalay, David C. Koo
We have studied galaxy two-point angular correlations as a function of color using 4-m plate photometry in two independent fields. Each field consists of over 2900 galaxies with ma…
A Catalog of Digital Images of 113 Nearby Galaxies
Zsolt Frei, Puragra Guhathakurta, James E. Gunn +1
We present a digital catalog of images of 113 galaxies in this paper. These galaxies are all nearby, bright, large and well resolved. All images were recorded with charge coupled d…
Quantifying the Fragility of Galactic Disks in Minor Mergers
Ian R. Walker, J. Christopher Mihos, Lars Hernquist
We perform fully self-consistent stellar dynamical simulations of the accretion of a companion ("satellite") galaxy by a large disk galaxy to investigate the interaction between th…
Fragmentation in a centrally condensed protostar
Andi Burkert, Peter Bodenheimer
Hydrodynamical calculations in three space dimensions of the collapse of an isothermal, centrally condensed, rotating 1 M\sol protostellar cloud are presented. A numerical algorith…
Cosmological Simulations with TreeSPH
Neal Katz, David H. Weinberg, Lars Hernquist
We describe numerical methods for incorporating gas dynamics into cosmological simulations and present illustrative applications to the cold dark matter (CDM) scenario. Our evoluti…
Damped Lyman-alpha and Lyman Limit Absorbers in the Cold Dark Matter Model
Neal Katz, David H. Weinberg, Lars Hernquist +1
We study the formation of damped \lya and Lyman limit absorbers in a hierarchical clustering scenario using a gas dynamical simulation of an , cold dark matter universe. In t…
The Lyman-alpha Forest in the Cold Dark Matter Model
Lars Hernquist, Neal Katz, David H. Weinberg +1
Cosmological simulations with gas provide a detailed description of the intergalactic medium, making possible predictions of neutral hydrogen absorption in the spectra of backgroun…
The Great Circle Camera: A New Drift Scanning Instrument
Dennis Zaritsky, Stephen A. Shectman, Gregory Bredthauer
We discuss the design, construction, and use of a new class of scanning camera that eliminates a critical limitation of standard CCD drift-scan observations. A standard scan, which…
Slicing Through Multicolor Space: Galaxy Redshifts From Broadband Photometry
A. J. Connolly, I. Csabai, A. S. Szalay +3
As a means of better understanding the evolution of optically selected galaxies we consider the distribution of galaxies within the multicolor space , , and . We…
Probing Lyman-alpha Absorbers with Double Lines of Sight
Jane C. Charlton, Christopher W. Churchill, Suzanne M. Linder
Study of Lyman-alpha absorption lines in the spectra of double line of sight (DLOS) quasars holds the promise of diagnosing the nature of the structures that give rise to Lyman-alp…
Hubble Space Telescope Observations of White Dwarfs in the Globular Cluster M4
Harvey B. Richer, Gregory G. Fahlman, Rodrigo A. Ibata +9
With the Wide Field Planetary Camera 2 (WFPC2) on the Hubble Space Telescope, we have discovered in M4 (NGC 6121, C 1620-264) the first extensive sequence of cooling white dwarfs s…
Improved Ways to Compare Simulations to Data
Joel R. Primack
Theoretical models for structure formation with Gaussian initial fluctuations have been worked out in considerable detail and compared with observations on various scales. It is on…
Spectral Classification of Galaxies Along the Hubble Sequence
Dennis Zaritsky, Ann I. Zabludoff, Jeffrey A. Willick
We develop a straightforward and quantitative two-step method for spectroscopically classifying galaxies from the low signal-to-noise (S/N) optical spectra typical of galaxy redshi…
Filament Statistics: A Quantitative Comparison of Cold + Hot and Cold Dark Matter Cosmologies with CfA1 Data
Romeel Davé, Doug Hellinger, Richard Nolthenius +2
A new class of geometric statistics for analyzing galaxy catalogs is presented. {\it Filament statistics} quantify filamentarity and planarity in large scale structure in a manner…
Evidence For Recent Accretion in Nearby Galaxies
Dennis Zaritsky
I discuss observations of magnitude residuals from the B-band Tully-Fisher relationship, B-V color, chemical abundance gradients, and asymmetries in the H I and stellar disks of ne…
A Collision of Subclusters in Abell 754
Ann I. Zabludoff, Dennis Zaritsky
We present direct evidence of a collision of subclusters in the galaxy cluster Abell 754. Our comparison of new optical data and archival ROSAT PSPC X-ray data reveal three collisi…
A Merger Origin for X-Structures in S0 Galaxies
Chris Mihos, Ian Walker, Lars Hernquist +2
Using numerical simulation, we study the response of a disk galaxy to a merger involving a low-mass satellite companion. During a prograde satellite accretion, the disk galaxy form…
Probing the Era of Galaxy Formation via TeV Gamma Ray Absorption by the Near Infrared Extragalactic Background
D. MacMinn, J. R. Primack
We present models of the extragalactic background light (EBL) based on several scenarios of galaxy formation and evolution. We have treated galaxy formation with the Press-Schecter…
Dynamical Modeling of NGC 7252 and the Return of Tidal Material
John Hibbard, Chris Mihos
Motivated by recent neutral hydrogen observations with the VLA, we have undertaken an investigation into the interaction that produced the well known merger remnant NGC 7252. Throu…
Do experiments and astrophysical considerations suggest an inverted neutrino mass hierarchy?
George M. Fuller, Joel R. Primack, Yong-Zhong Qian
The recent results from the Los Alamos neutrino oscillation experiment, together with assumptions of neutrino oscillation solutions for the solar and atmospheric neutrino deficit p…