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
26 papers · 2 filters
Full spectral fitting of Milky Way and M31 globular clusters: ages and metallicities
Enio Cezario, Paula R. T. Coelho, Alan Alves-Brito +2
Context: The formation and evolution of disk galaxies are long standing questions in Astronomy. Understanding the properties of globular cluster systems can lead to important insig…
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…
Global Properties of M31's Stellar Halo from the SPLASH Survey. I. Surface Brightness Profile
Karoline M. Gilbert, Puragra Guhathakurta, Rachael L. Beaton +10
We present the surface brightness profile of M31's stellar halo out to a projected radius of 175 kpc. The surface brightness estimates are based on confirmed samples of M31 red gia…
A Metal-Strong and Dust-Rich Damped \lya Absorption System toward the Quasar SDSS J115705.52+615521.7
Jian-Guo Wang, Hong-Yan Zhou, Jian Ge +7
(Abridged for arXiv) We report the discovery of an unusual, extremely dust-rich and metal-strong damped \lya absorption system (DLA) at a redshift toward the quasar…
The SEGUE K giant survey II: A Catalog of Distance Determinations for the SEGUE K giants in the Galactic Halo
Xiang-Xiang Xue, Zhibo Ma, Hans-Walter Rix +13
We present an online catalog of distance determinations for K giants, most of which are members of the Milky Way's stellar halo. Their medium-resolution spectra from SDS…
The Detailed Chemical Abundance Patterns of M31 Globular Clusters
J. E. Colucci, R. A. Bernstein, J. Cohen
We present detailed chemical abundances for 20 elements in 30 globular clusters in M31. These results have been obtained using high resolution (24,000) spectra o…
How Does the Surface Density and Size of Disk Galaxies Measured in Hydrodynamic Simulations Correlate with the Halo Spin Parameter?
Ji-hoon Kim, Jounghun Lee
Late-type low surface brightness galaxies (LSBs) are faint disk galaxies with central maximum stellar surface densities below 100 Msun/pc^2. The currently favored scenario for thei…
Dwarf Galaxies with Ionizing Radiation Feedback. II: Spatially-resolved Star Formation Relation
Ji-hoon Kim, Mark R. Krumholz, John H. Wise +3
We investigate the spatially-resolved star formation relation using a galactic disk formed in a comprehensive high-resolution (3.8 pc) simulation. Our new implementation of stellar…
Broken and unbroken: the Milky Way and M31 stellar haloes
A. J. Deason, V. Belokurov, N. W. Evans +1
We use the Bullock & Johnston suite of simulations to study the density profiles of L*-type galaxy stellar haloes. Observations of the Milky Way and M31 stellar haloes show contras…
Dwarf Galaxies with Ionizing Radiation Feedback. I: Escape of Ionizing Photons
Ji-hoon Kim, Mark R. Krumholz, John H. Wise +3
We describe a new method for simulating ionizing radiation and supernova feedback in the analogues of low-redshift galactic disks. In this method, which we call star-forming molecu…
A Quasar-Galaxy Mixing Diagram: Quasar Spectral Energy Distribution Shapes in the Optical to Near-Infrared
Heng Hao, Martin Elvis, Angela Bongiorno +19
We define a quasar-galaxy mixing diagram using the slopes of their spectral energy distributions (SEDs) from 1μm to 3000Å and from 1μm to 3μm in the rest frame. The mixing diagram…
Spectral Energy Distributions of Type 1 AGN in XMM-COSMOS Survey II - Shape Evolution
Heng Hao, Martin Elvis, Francesca Civano +18
The mid-infrared to ultraviolet (0.1 -- 10 ) spectral energy distribution (SED) shapes of 407 X-ray-selected radio-quiet type 1 AGN in the wide-field ``Cosmic Evolution Survey"…
Galacto-forensic of LMC's orbital history as a probe for the dark matter potential in the outskirt of the Galaxy
Xiaojia Zhang, Douglas N. C. Lin, Andreas Burkert +1
The 3D observed velocities of the Large and Small Magellanic Clouds(LMC and SMC) provide an opportunity to probe the Galactic potential in the outskirt of the Galactic halo. Based…
Evidence for Two Distinct Stellar Initial Mass Functions
Dennis Zaritsky, Janet E. Colucci, Peter M. Pessev +2
We present velocity dispersion measurements of 20 Local Group stellar clusters (7 < log(age [yrs]) < 10.2) from integrated light spectra and examine the evolution of the stellar ma…
Thermal-Instability-Driven Turbulent Mixing in Galactic Disks: I. Effective Mixing of Metals
Chao-Chin Yang, Mark Krumholz
Observations show that radial metallicity gradients in disk galaxies are relatively shallow, if not flat, especially at large galactocentric distances and for galaxies in the high-…
An Off-center Density Peak in the Milky Way's Dark Matter Halo?
Michael Kuhlen, Javiera Guedes, Annalisa Pillepich +2
We show that the position of the central dark matter density peak may be expected to differ from the dynamical center of the Galaxy by several hundred parsec. In Eris, a high resol…
LAMOST Experiment for Galactic Understanding and Exploration (LEGUE) The survey science plan
Licai Deng, Heidi Jo Newberg, Chao Liu +22
We describe the current plans for a spectroscopic survey of millions of stars in the Milky Way galaxy using the Guo Shou Jing Telescope (GSJT, formerly the Large Area Multi-Object…
Should I Stay or Should I Go: Stellar Wind Retention and Expulsion in Massive Star Clusters
J. P. Naiman, E. Ramirez-Ruiz, D. N. C. Lin
Mass and energy injection throughout the lifetime of a star cluster contributes to the gas reservoir available for subsequent episodes of star formation and the feedback energy bud…
The Interstellar Magnetic Field Close to the Sun II
P. C. Frisch, B-G Andersson, A. Berdyugin +9
A key indicator of the galactic environment of the Sun is provided by the magnetic field in the interstellar medium (ISM), which influences the shape of the heliosphere. The direct…
The M31 Velocity Vector. II. Radial Orbit Towards the Milky Way and Implied Local Group Mass
Roeland P. van der Marel, Mark Fardal, Gurtina Besla +5
We determine the velocity vector of M31 with respect to the Milky Way and use this to constrain the mass of the Local Group, based on HST proper-motion measurements presented in Pa…
On Galaxies and Homology
Gregory S. Novak, Patrik Jonsson, Joel R. Primack +2
The definition of homology for single-component galaxies is clear, but for multi-component (luminous and dark matter) galaxies there is some ambiguity. We attempt to clarify the si…
A Short Scale Length for the α-Enhanced Thick Disk of the Milky Way: Evidence from Low-Latitude SEGUE Data
Judy Y. Cheng, Constance M. Rockosi, Heather L. Morrison +12
We examine the α-element abundance ratio, [α/Fe], of 5620 stars, observed by the Sloan Extension for Galactic Understanding and Exploration survey in the region 6 kpc < R < 16 kpc,…
The SPLASH Survey: Kinematics of Andromeda's Inner Spheroid
Claire E. Dorman, Puragra Guhathakurta, Mark A. Fardal +12
The combination of large size, high stellar density, high metallicity, and Sersic surface brightness profile of the spheroidal component of the Andromeda galaxy (M31) within R_proj…
Insight Into the Formation of the Milky Way Through Cold Halo Substructure. III. Statistical Chemical Tagging in the Smooth Halo
Kevin C. Schlaufman, Constance M. Rockosi, Young Sun Lee +5
We find that the relative contribution of satellite galaxies accreted at high redshift to the stellar population of the Milky Way's smooth halo increases with distance, becoming ob…