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Number density profiles of galaxy groups and clusters in the SDSS
(Vanderbilt University. Dept. of Physics and Astronomy, 2008-04-20)
We use projected number density profiles of galaxy groups to investigate the relationship between galaxy group structure and dark matter structure within halos. We primarily study a specific model of how galaxies populate ...
The search for M-M Dwarf Eclipsing Binary Systems
(Vanderbilt University. Dept. of Physics and Astronomy, 2016-05-18)
Using data from the Kilodegree Extremely Little Telescope (KELT) project,
we performed a survey of 2028 known M Dwarf stars in the KELT footprint
for M-M Dwarf eclipsing binaries (EBs). After searching 2028 Mdwarf ...
Structure function analysis of blazars AP Librae and 3c279
(Vanderbilt University. Dept. of Physics & Astronomy, 2008-04-27)
Blazars AP Librae and 3c279 are analyzed for microvariability using a technique known as structure function analysis. AP Librae was observed in April
of 2005 and 3c279 was observed in April of 2007. The data for AP Librae ...
Rotation periods of the Hyades open cluster using ASAS light curves : measuring the Hyades gyro-age and benchmarking tools for gyrochronology studies with LSST
(Vanderbilt University. Dept. of Physics and Astronomy, 2012-04)
Rotation period distributions for older open clusters are difficult to
obtain because of the general scarcity of clusters with ages greater
than 200 Myr, as well as the challenge of measuring rotation periods
for less ...
A Search for Pre-Main Sequence Eclipsing Binary Stars in the Lagoon Nebula
(Vanderbilt University. Dept. of Physics and Astronomy, 2009-04-20)
We report time-series CCD I-band photometry for the pre-main-sequence cluster NGC 6530, located within the Lagoon Nebula. The data were obtained with the 4Kx4K imager on the SMARTS 1.0m telescope at CTIO on 36 nights over ...
Simulating the universe with GPU-accelerated supercomputers: n-body methods, tests, and examples
(Vanderbilt University. Department of Physics and Astronomy, 2013-04-22)
We demonstrate the acceleration obtained from using GPU/CPU hybrid clusters
and supercomputers for N-body simulations of gravity based in part on the
author's new code development. Validation tests are shown for ...
Density profiles of dark matter halos
(Vanderbilt University. Dept. of Physics and Astronomy, 2010-04)
Expected Host Galaxy Properties of PTA Detectable Massive Black Hole Binaries
(Vanderbilt University. Dept. of Physics and Astronomy, 2021-12-06)
Massive black hole binaries (MBHB) produce gravitational waves (GW) that will be detectable with pulsar timing arrays within the next few years. We determine the properties of the host galaxies of MBHB at the time they are ...
DARK MATTER MAY NOT BE SO DARK: Testing Massive Primordial Black Hole Dark Matter with Galactic X-Ray Emission
(Vanderbilt University. Dept. of Physics and Astronomy, 2024-04-16)
Were primordial black holes (PBHs) to exist, they could constitute a significant portion of dark matter in our universe which could be explored through gravitational wave emission, gravitational lensing, and electromagnetic ...