184 citations
- Center for Astrophysics Harvard & SmithsonianUS5 papers
- California Institute of TechnologyUS3 papers
- University of ArizonaUS3 papers
- Goddard Space Flight CenterUS2 papers
- Institute of Astronomy and Astrophysics, Academia SinicaTW2 papers
- Jet Propulsion LaboratoryUS2 papers
- Johns Hopkins UniversityUS2 papers
- Northern Arizona UniversityUS2 papers
- Pennsylvania State UniversityUS2 papers
- The Ohio State UniversityUS2 papers
- The University of Texas at AustinUS2 papers
- University of California, BerkeleyUS2 papers
9 papers · 1 filter
Rapid Formation of Icy Super-Earths and the Cores of Gas Giant Planets
Scott J. Kenyon, Benjamin C. Bromley
We describe a coagulation model that leads to the rapid formation of super-Earths and the cores of gas giant planets. Interaction of collision fragments with the gaseous disk is th…
Do the nearby BHB stars belong to the Thick Disk or the Halo?
T. D. Kinman, Heather L. Morrison, Warren R. Brown
We study the Milky Way region Z<3.0 kpc, where the thick disk and inner halo overlap, by using the kinematics of local blue horizontal branch (BHB) stars (within 1 kpc) and new sam…
The Anisotropic Spatial Distribution of Hypervelocity Stars
Warren R. Brown, Margaret J. Geller, Scott J. Kenyon +1
We study the distribution of angular positions and angular separations of unbound hypervelocity stars (HVSs). HVSs are spatially anisotropic at the 3-sigma level. The spatial aniso…
Hypervelocity Stars and the Galactic Center
Warren R. Brown
A summary of the current knowledge on hypervelocity stars (HVSs). HVSs are fascinating because their properties are linked to Sgr A* and the stellar environment of the Galactic Cen…
Welcome back, Polaris the Cepheid
H. Bruntt, A. J. Penny, D. Stello +2
For about 100 years the amplitude of the 4-day pulsation in Polaris has decreased. We present new results showing a significant increase in the amplitude based on 4.5 years of cont…
Direct Distance Measurement to the Dusty White Dwarf GD 362
Mukremin Kilic, John R. Thorstensen, Detlev Koester
We present trigonometric parallax observations of GD 362 obtained over seven epochs using the MDM 2.4m Hiltner Telescope. The existence of a dust disk around this possibly massive…