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44 papers
Sagittarius B1 -- A Patchwork of H II Regions and PhotoDissociation Regions
Janet P. Simpson, Sean W. J. Colgan, Angela S. Cotera +2
Sgr B1 is a luminous H II region in the Galactic Center immediately next to the massive star-forming giant molecular cloud Sgr B2 and apparently connected to it from their similar…
SOFIA FIFI-LS Observations of Sgr B1: Ionization Structure and Sources of Excitation
Janet P. Simpson, Sean W. J. Colgan, Angela S. Cotera +2
The current paradigm of Galactic Center (GC) gas motions and star formation envisions sequential star formation in streams of gas as they pass near the supermassive black hole, Sgr…
Surface Brightness Profile of the Milky Way's Nuclear Star Cluster
R. Schodel, A. Feldmeier, D. Kunneriath +4
(abridged) In this paper we aim at determining the shape, size, and luminosity/mass of the Milky Way Nuclear Star Cluster (MWNSC). We use Spitzer/IRAC images at 3.6 and 4.5 microme…
HST Paschen-alpha Survey of the Galactic Center: Data Reduction and Products
H. Dong, Q. D. Wang, A. Cotera +7
Our HST/NICMOS Pa survey of the Galactic center (GC) provides a uniform, panoramic, high-resolution map of stars and ionized diffuse gas in the central 416 arcmin^2 of the Galaxy.…
Massive Young Stellar Objects in the Galactic Center. I. Spectroscopic Identification from Spitzer/IRS Observations
Deokkeun An, Solange V. Ramírez, Kris Sellgren +7
We present results from our spectroscopic study, using the Infrared Spectrograph (IRS) onboard the Spitzer Space Telescope, designed to identify massive young stellar objects (YSOs…
Properties of the Compact HII Region Complex G-0.02-0.07
Elisabeth Mills, Mark R. Morris, Cornelia Lang +4
We present new extinction maps and high-resolution Paschen alpha images of G-0.02-0.07, a complex of compact HII regions located adjacent to the M-0.02-0.07 giant molecular cloud,…