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A re-analysis of the isolated black hole candidate OGLE-2011-BLG-0462/MOA-2011-BLG-191
Casey Y. Lam, Jessica R. Lu
There are expected to be isolated black holes (BHs) in the Milky Way. OGLE-2011-BLG-0462/MOA-2011-BLG-191 (OB110462) is the only such BH with a mass measurement to date…
A Search for Predicted Astrometric Microlensing Events by Nearby Brown Dwarfs
Judah Luberto, Emily C. Martin, Peter McGill +3
Gravitational microlensing has the potential to provide direct gravitational masses of single, free-floating brown dwarfs, independent of evolutionary and atmospheric models. The p…
Searching for a Hypervelocity White Dwarf Companion: A Proper Motion Survey of SN 1006
Joshua V. Shields, Wolfgang Kerzendorf, Matthew W. Hosek +7
Type Ia Supernovae (SNe Ia) are securely understood to come from the thermonuclear explosion of a white dwarf as a result of binary interaction, but the nature of that binary inter…
Trigonometric parallaxes of two T dwarfs with Keck and ShaneAO astrometry
Jayke Nguyen, S. Mark Ammons, Kaitlin Dennison +4
We present trigonometric parallax and proper motion measurements for two T-type brown dwarfs. We derive our measurements from infrared laser guide star adaptive optics observations…
On the Possibility of Stellar Lenses in the Black Hole Candidate Microlensing Events MACHO-96-BLG-5 and MACHO-98-BLG-6
Fatima N. Abdurrahman, Haynes F. Stephens, Jessica R. Lu
Though stellar-mass black holes (BHs) are likely abundant in the Milky Way (N=10^8-10^9), only ~20 have been detected to date, all in accreting binary systems (Casares 2006). Gravi…
SPISEA: A Python-Based Simple Stellar Population Synthesis Code for Star Clusters
M. W. Hosek, J. R. Lu, C. Y. Lam +4
We present SPISEA (Stellar Population Interface for Stellar Evolution and Atmospheres), an open-source Python package that simulates simple stellar populations. The strength of SPI…