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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…
MMT Hypervelocity Star Survey
Warren R. Brown, Margaret J. Geller, Scott J. Kenyon
We describe a new survey for unbound hypervelocity stars (HVSs), stars traveling with such extreme velocities that dynamical ejection from a massive black hole (MBH) is their most…
Spectrophotometry with Hectospec, the MMT's Fiber-Fed Spectrograph
Daniel G. Fabricant, Michael J. Kurtz, Margaret J. Geller +2
We describe techniques for photometric calibration of optical spectra obtained with the MMT's fiber-fed spectrograph, Hectospec. The atmospheric dispersion compensation prisms buil…
Hypervelocity Stars: From the Galactic Center to the Halo
S. J. Kenyon, B. C. Bromley, M. J. Geller +1
Hypervelocity stars (HVS) traverse the Galaxy from the central black hole to the outer halo. We show that the Galactic potential within 200 pc acts as a high pass filter preventing…