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
22 papers · 2 filters
A long-period planet orbiting a nearby Sun-like star
Hugh R. A. Jones, R. Paul Butler, C. G. Tinney +10
The Doppler wobble induced by the extra-solar planet HD 134987b was first detected by data from the Keck Telescope nearly a decade ago, and was subsequently confirmed by data from…
Gamma-ray and Radio Properties of Six Pulsars Detected by the Fermi Large Area Telescope
The Fermi LAT collaboration, the Fermi Pulsar Timing Consortium
We report the detection of pulsed gamma-rays for PSRs J0631+1036, J0659+1414, J0742-2822, J1420-6048, J1509-5850 and J1718-3825 using the Large Area Telescope (LAT) on board the Fe…
Near-infrared survey of High Mass X-ray Binary candidates
J. M. Torrejón, I. Negueruela, D. M. Smith +1
We combine infrared spectra in the I, J, H and K bands together with JHK photometry to characterize the spectral type, luminosity class and distance to the infrared counterparts to…
Stellar Feedback in Molecular Clouds and its Influence on the Mass Function of Young Star Clusters
S. Michael Fall, Mark R. Krumholz, Christopher D. Matzner
We investigate how the removal of interstellar material by stellar feedback limits the efficiency of star formation in molecular clouds and how this determines the shape of the mas…
Stellar Kinematics of Young Clusters in Turbulent Hydrodynamic Simulations
S. S. R. Offner, C. E. Hansen, M. R. Krumholz
The kinematics of newly-formed star clusters are interesting both as a probe of the state of the gas clouds from which the stars form, and because they influence planet formation,…
Fast Winds and Mass Loss from Metal-Poor Field Giants
A. K. Dupree, G. H. Smith, J. Strader
Spectra of the He I 10830 Angstrom line were obtained with NIRSPEC on the Keck 2 telescope for metal-deficient field giant stars. This line is ubiquitous in stars with T_eff greate…
Discovery of Precursor LBV Outbursts in Two Recent Optical Transients: The Fitfully Variable Missing Links UGC 2773-OT and SN 2009ip
Nathan Smith, Adam A. Miller, Weidong Li +11
We present progenitor-star detections, light curves, and optical spectra of SN2009ip and the 2009 optical transient in UGC2773 (U2773-OT), which were not genuine SNe. Precursor var…
The Early Asymmetries of Supernova 2008D / XRF 080109
J. R. Maund, J. C. Wheeler, D. Baade +4
Spectropolarimetry of the Type Ib SN 2008D, associated with the XRF 080109, at two separate epochs, are presented. The epochs of these observations correspond to V-band light curve…
Comparing the Ca II H and K Emission Lines in Red Giant Stars
Jenna Ryon, Matthew D. Shetrone, Graeme H. Smith
Measurements of the asymmetry of the emission peaks in the core of the Ca II H line for 105 giant stars are reported. The asymmetry is quantified with the parameter V/R, defined as…
On the Role of Disks in the Formation of Stellar Systems: A Numerical Parameter Study of Rapid Accretion
Kaitlin M. Kratter, Christopher D. Matzner, Mark R. Krumholz +1
We study rapidly accreting, gravitationally unstable disks with a series of global, three dimensional, numerical experiments using the code ORION. In this paper we conduct a numeri…
On the Penetration of Meridional Circulation below the Solar Convection Zone II: Models with Convection Zone, the Taylor-Proudman constraint and Applications to Other Stars
P. Garaud, L. Acevedo-Arreguin
The solar convection zone exhibits a strong level of differential rotation, whereby the rotation period of the polar regions is about 25-30% longer than the equatorial regions. The…
The Dynamics of Radiation Pressure-Dominated HII Regions
Mark R. Krumholz, Christopher D. Matzner
We evaluate the role of radiation pressure in the dynamics of HII regions. We first determine under what conditions radiation pressure is significant in comparison to gas pressure…
A Unique Star in the Outer Halo of the Milky Way
David K. Lai, Constance M. Rockosi, Michael Bolte +5
As part of a program to measure abundance ratios in stars beyond 15 kpc from the Galactic center, we have discovered a metal-poor star in the outer halo with a unique chemical sign…
The Effects of Radiative Transfer on Low-Mass Star Formation
S. S. R. Offner, R. I. Klein, C. F. McKee +1
Forming stars emit a substantial amount of radiation into their natal environment. We use ORION, an adaptive mesh refinement (AMR) three-dimensional gravito-radiation-hydrodynamics…
X-Ray-Emitting Stars Identified from the ROSAT All-Sky Survey and the Sloan Digital Sky Survey
Marcel Agueros, Scott Anderson, Kevin Covey +7
The ROSAT All-Sky Survey (RASS) was the first imaging X-ray survey of the entire sky. While X-ray source counterparts are known to range from distant quasars to nearby M dwarfs, th…
The Disappearance of the Progenitors of Supernovae 1993J and 2003gd
Justyn R. Maund, Stephen J. Smartt
Using images from the Hubble Space Telescope (HST) and the Gemini Telescope we confirm the disappearance of the progenitors of two Type II supernovae (SNe), and evaluate the presen…
Sub-surface convection zones in hot massive stars and their observable consequences
M. Cantiello, N. Langer, I. Brott +6
We study the convection zones in the outer envelope of hot massive stars which are caused by opacity peaks associated with iron and helium ionization. We determine the occurrence a…
Evidence for an Edge-On Disk around the Young Star MWC 778 from Infrared Imaging and Polarimetry
Marshall D. Perrin, William D. Vacca, James R. Graham
MWC 778 is an unusual and little-studied young stellar object located in the IC 2144 nebula. Recent spectroscopy by Herbig and Vacca (2008) suggested the presence of an edge-on cir…
Rotational mixing in massive binaries: detached short-period systems
S. E. de Mink, M. Cantiello, N. Langer +3
Models of rotating single stars can successfully account for a wide variety of observed stellar phenomena, such as the surface enhancements of N and He. However, recent observation…
The Formation of Massive Star Systems by Accretion
Mark R. Krumholz, Richard I. Klein, Christopher F. McKee +2
Massive stars produce so much light that the radiation pressure they exert on the gas and dust around them is stronger than their gravitational attraction, a condition that has lon…
Double-diffusive instabilities of a shear-generated magnetic layer
Lara J. Silvers, Geoffrey M. Vasil, Nicholas H. Brummell +1
Previous theoretical work has speculated about the existence of double-diffusive magnetic buoyancy instabilities of a dynamically evolving horizontal magnetic layer generated by th…
Precision Astrometry with the Very Long Baseline Array: Parallaxes and Proper Motions for 14 Pulsars
S. Chatterjee, W. F. Brisken, W. H. T. Vlemmings +7
Astrometry can bring powerful constraints to bear on a variety of scientific questions about neutron stars, including their origins, astrophysics, evolution, and environments. Usin…