Jon C. Mauerhan

Discovery of a Luminous Blue Variable with an Ejection Nebula Near the Quintuplet Cluster (2010)

Mauerhan, Jon C., Morris, Mark R., Cotera, Angela S., Dong, Hui, Wang, Q. Daniel, Stolovy, Susan R., ...

We report on the discovery of a luminous blue variable (LBV) lying ~7 pc in projection from the Quintuplet cluster. This source, which we call LBV G0.120-0.048, was selected for spectroscopy owing to...

Near-infrared counterparts to Chandra X-ray sources toward the Galactic Center. II. Discovery of Wolf-Rayet stars and O supergiants (2009)

Mauerhan, Jon C., Muno, Michael P., Morris, Mark R., Stolovy, Susan R., Cotera, Angela S.

We present new identifications of infrared counterparts to the population of hard X-ray sources near the Galactic center detected by the Chandra X-ray Observatory. We have confirmed 16 new massive...

Near-Infrared Counterparts to Chandra X-ray Sources toward the Galactic Center. I. Statistics and a Catalog of Candidates (2009)

Mauerhan, Jon C., Muno, Michael P., Morris, Mark R., Bauer, Franz E., Nishiyama, Shogo, Nagata, Tetsuya

We present a catalog of 5184 candidate infrared counterparts to X-ray sources detected towards the Galactic center. The X-ray sample contains 9017 point sources detected in this region by the Chandra...

12 New Galactic Wolf-Rayet Stars Identified via 2MASS + Spitzer/GLIMPSE (2009)

Mauerhan, Jon C., Van-Dyk, Schuyler D., Morris, Pat W.

We report new results from our effort to identify obscured Wolf-Rayet stars in the Galaxy. Candidates were selected by their near-infrared (Two Micron All Sky Survey; 2MASS) and mid-infrared...

12 New Galactic Wolf-Rayet Stars Identified via 2MASS+Spitzer/GLIMPSE (2009)

Mauerhan, Jon C., Van Dyk, Schuyler D., Morris, Pat W.

We report new results from our effort to identify obscured Wolf-Rayet stars in the Galaxy. Candidates were selected by their near-infrared (2MASS) and mid-infrared (Spitzer/GLIMPSE) color excesses,...

Massive stellar X-ray sources in the galactic center (2008)

Mauerhan, Jon C., Muno, Michael P., Bauer, Franz E., Morris, Mark R.

We present results of a spectroscopic survey of bright near-infrared counterparts to X-ray point sources from a deep Chandra survey of the Galactic nuclear bulge. K-band spectroscopy has revealed 13...

Discovery of hot supergiant stars near the galactic center (2007)

Mauerhan, Jon C., Muno, Michael P., Morris, Mark

We report new results of a campaign to find Wolf-Rayet and O (WR/O) stars and high-mass X-ray binaries (HMXBs) in the Galactic center. We searched for candidates by cross-correlating the Two Micron...

Discovery of hot supergiant stars near the Galactic center (2007)

Mauerhan, Jon C., Muno, Michael P., Morris, Mark

We report new results of a campaign to find Wolf-Rayet and O (WR/O) stars and high-mass X-ray binaries (HMXBs) in the Galactic center. We searched for candidates by cross-correlating the 2MASS...

Intra-day Variability of Sagittarius A* at 3 Millimeters (2005)

Mauerhan, Jon C., Morris, Mark, Walter, Fabian, Baganoff, Frederick K.

We report observations and analysis of flux monitoring of Sagittarius A* at 3-mm wavelength using the OVRO millimeter interferometer over a period of eight days (2002 May 23-30). Frequent phase and...

Intraday variability of Sagittarius A* at 3 millimeters (2005)

Mauerhan, Jon C., Morris, Mark, Walter, Fabian, Baganoff, Frederick K.

We report observations and analysis of flux monitoring of Sagittarius A* at 3 mm wavelength using the Owens Valley Radio Observatory millimeter interferometer over a period of 8 days (2002 May...