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
32 papers · 2 filters
Dark Matter Direct Detection with Non-Maxwellian Velocity Structure
M. Kuhlen, N. Weiner, J. Diemand +5
The velocity distribution function of dark matter particles is expected to show significant departures from a Maxwell-Boltzmann distribution. This can have profound effects on the…
An HST/WFPC2 survey of bright young clusters in M31. IV. Ages and mass estimates
S. Perina, J. G. Cohen, P. Barmby +11
{Aims.} We present the main results of an imaging survey of possible young massive clusters (YMC) in M31 performed with the Wide Field and Planetary Camera2 (WFPC2) on the Hubble S…
The SPLASH Survey: Internal Kinematics, Chemical Abundances, and Masses of the Andromeda I, II, III, VII, X, and XIV dSphs
Jason S. Kalirai, Rachael L. Beaton, Marla C. Geha +7
We present new Keck/DEIMOS spectroscopic observations of hundreds of individual stars along the sightline to Andromeda's first three discovered dwarf spheroidal galaxies (dSphs) -…
Pulsar Timing with the Parkes Radio Telescope for the Fermi Mission
P. Weltevrede, S. Johnston, R. N. Manchester +10
We report here on two years of timing of 168 pulsars using the Parkes radio telescope. The vast majority of these pulsars have spin-down luminosities in excess of 10^34 erg/s and a…
The SPLASH Survey: A Spectroscopic Analysis of the Metal-Poor, Low-Luminosity M31 dSph Satellite Andromeda X
Jason S. Kalirai, Daniel B. Zucker, Puragra Guhathakurta +6
Andromeda X (And X) is a newly discovered low-luminosity M31 dwarf spheroidal galaxy (dSph) found by Zucker et al. (2007) in the Sloan Digital Sky Survey (SDSS - York et al. 2000).…
Multi-Element Abundance Measurements from Medium-Resolution Spectra. I. The Sculptor Dwarf Spheroidal Galaxy
Evan N. Kirby, Puragra Guhathakurta, Michael Bolte +2
We present measurements of Fe, Mg, Si, Ca, and Ti abundances for 388 radial velocity member stars in the Sculptor dwarf spheroidal galaxy (dSph), a satellite of the Milky Way. This…
Structure and Kinematics of the Stellar Halos and Thick Disks of the Milky Way Based on Calibration Stars from SDSS DR7
Daniela Carollo, Timothy C. Beers, Masashi Chiba +6
The structure and kinematics of the recognized stellar components of the Milky Way are explored, based on well-determined atmospheric parameters and kinematic quantities for 32360…
Millisecond Pulsar Ages: Implications of Binary Evolution and a Maximum Spin Limit
Bulent Kiziltan, Stephen E. Thorsett
In the absence of constraints from the binary companion or supernova remnant, the standard method for estimating pulsar ages is to infer an age from the rate of spin-down. While th…
The Milky Way Tomography with SDSS: III. Stellar Kinematics
N. A. Bond, Z. Ivezic, B. Sesar +2
We study Milky Way kinematics using a sample of 18.8 million main-sequence stars with r<20 and proper-motion measurements derived from SDSS and POSS astrometry, including ~170,000…
M31 Globular Cluster Abundances from High-Resolution, Integrated-Light Spectroscopy
J. E. Colucci, R. A. Bernstein, S. Cameron +2
We report the first detailed chemical abundances for 5 globular clusters (GCs) in M31 from high-resolution (R ~ 25,000) spectroscopy of their integrated light. These GCs are the fi…
Metallicity Gradients at Large Galactocentric Radii Using the Near-infrared Calcium Triplet
Caroline Foster, Robert N. Proctor, Duncan A. Forbes +3
We describe a new spectroscopic technique for measuring radial metallicity gradients out to large galactocentric radii. We use the DEIMOS multi-object spectrograph on the Keck tele…
Radio detection of LAT PSRs J1741-2054 and J2032+4127: no longer just gamma-ray pulsars
F. Camilo, P. S. Ray, S. M. Ransom +24
Sixteen pulsars have been discovered so far in blind searches of photons collected with the Large Area Telescope on the Fermi Gamma-ray Space Telescope. We here report the discover…
The Atomic-to-Molecular Transition in Galaxies. III. A New Method for Determining the Molecular Content of Primordial and Dusty Clouds
Christopher F. McKee, Mark R. Krumholz
Understanding the molecular content of galaxies is a critical problem in star formation and galactic evolution. Here we present a new method, based on a Stromgren-type analysis, to…
Exploring Dark Matter with Milky Way substructure
M. Kuhlen, P. Madau, J. Silk
The unambiguous detection of Galactic dark matter annihilation would unravel one of the most outstanding puzzles in particle physics and cosmology. Recent observations have motivat…
Simulations of Recoiling Massive Black Holes in the Via Lactea Halo
Javiera Guedes, Piero Madau, Micheal Kuhlen +2
The coalescence of a massive black hole (MBH) binary leads to the gravitational-wave recoil of the system and its ejection from the galaxy core. We have carried out N-body simulati…
Numerical Star-Formation Studies -- A Status Report
Ralf S. Klessen, Mark R. Krumholz, Fabian Heitsch
The formation of stars is a key process in astrophysics. Detailed knowledge of the physical mechanisms that govern stellar birth is a prerequisite for understanding the formation a…
CN Variations in High Metallicity Globular and Open Clusters
Sarah L. Martell, Graeme H. Smith
We present a comparison of CN bandstrength variations in the high-metallicity globular clusters NGC 6356 and NGC 6528 with those measured in the old open clusters NGC 188, NCG 2158…
Do all millisecond pulsars share a common heritage?
Bulent Kiziltan, Stephen. E. Thorsett
The discovery of millisecond pulsations from neutron stars in low mass X-ray binary (LMXB) systems has substantiated the theoretical prediction that links millisecond radio pulsars…
Helium-Core White Dwarfs in the Globular Cluster NGC 6397
R. R. Strickler, A. M. Cool, J. Anderson +3
We present results of a study of the central regions of NGC 6397 using Hubble Space Telescope's Advanced Camera for Surveys, focusing on a group of 24 faint blue stars that form a…
The Star Formation Law in Atomic and Molecular Gas
Mark R. Krumholz, Christopher F. McKee, Jason Tumlinson
We propose a simple theoretical model for star formation in which the local star formation rate in a galaxy is determined by three factors. First, the interplay between the interst…
Enhanced tidal disruption rates from massive black hole binaries
X. Chen, P. Madau, A. Sesana +1
"Hard" massive black hole (MBH) binaries embedded in steep stellar cusps can shrink via three-body slingshot interactions. We show that this process will inevitably be accompanied…
Mixed Populations in Globular Clusters: Et Tu, 47 Tuc?
J. Anderson, G. Piotto, I. R. King +2
We exploit the large number of archival HST images of 47 Tuc to examine its subgiant branch (SGB) and main sequence (MS) for signs of multiple populations. In the cluster core, we…
Evidence for the disky origin of luminous Virgo dwarf ellipticals from the kinematics of their globular cluster systems
Michael A. Beasley, A. Javier Cenarro, Jay Strader +1
We report evidence for dynamically significant rotation in the globular cluster systems of two luminous Virgo dwarf ellipticals, VCC1261 and VCC1528. Including previous results for…
SEGUE: A Spectroscopic Survey of 240,000 stars with g=14-20
II SEGUE Collaboration, Brian Yanny, Constance Rockosi +2
The SEGUE survey obtained 240,000 moderate resolution (R = 1800) spectra from 3900 - 9000 Angstroms of fainter Milky Way stars (14.0 < g < 20.3) of a wide variety of spectral types…