Joel D. Hartman

HATNet Field G205: Follow-Up Observations of 28 Transiting-Planet candidates and Confirmation of the Planet HAT-P-8b (2008)

Latham, David W., Bakos, Gáspár Á., Torres, Guillermo, Stefanik, Robert P., Noyes, Robert W., Kovács, Géza, ...

We report the identification of 32 transiting-planet candidates in HATNet field G205. We describe the procedures that we have used to follow up these candidates with spectroscopic and photometric...

A 15.65 solar mass black hole in an eclipsing binary in the nearby spiral galaxy Messier 33 (2007)

Orosz, Jerome A., McClintock, Jeffrey E., Narayan, Ramesh, Bailyn, Charles D., Hartman, Joel D., Mracri, Lucas, ...

Stellar-mass black holes are discovered in X-ray emitting binary systems, where their mass can be determined from the dynamics of their companion stars. Models of stellar evolution have difficulty...

Supplementary Information for "A 15.65 solar mass black hole in an eclipsing binary in the nearby spiral galaxy Messier 33" (2007)

Orosz, Jerome A., McClintock, Jeffrey E., Narayan, Ramesh, Bailyn, Charles D., Hartman, Joel D., Macri, Lucas, ...

This Supplementary Information provides details about the spectral extraction (crowding issues and the removal of nebular lines), a discussion about the distance to M33, a model for the O-star wind...

The Hypervelocity Star SDSS J090745.0+024507 is a Short-Period Variable (2005)

Fuentes, Cesar I., Stanek, K. Z., Gaudi, B. Scott, McLeod, Brian A., Bogdanov, Slavko B., Hartman, Joel D., ...

We present high-precision photometry of the hypervelocity star SDSS J090745.0+024507 (HVS), which has a Galactic rest-frame radial velocity of v=709 km/s, and so has likely been ejected from the...

The Transit Light Curve Project. IV. Five Transits of the Exoplanet OGLE-TR-10b (2005)

Holman, Matthew J., Winn, Joshua N., Fuentes, Cesar I., Hartman, Joel D., Stanek, K. Z., Torres, Guillermo, ...

We present I and B photometry of five distinct transits of the exoplanet OGLE-TR-10b. By modeling the light curves, we find the planetary radius to be R_P = 1.06 +/- 0.08 R_Jup and the stellar radius...

On the Rotation Period of (90377) Sedna (2005)

Gaudi, B. Scott, Stanek, Krzysztof Z., Hartman, Joel D., Holman, Matthew J., McLeod, Brian A.

We present precise, ~1%, r-band relative photometry of the unusual solar system object (90377) Sedna. Our data consist of 143 data points taken over eight nights in October 2004 and January 2005. The...