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Spectral Energy Distributions of High Mass Proto Stellar Objects - Evidence for High Accretion Rates
F. M. Fazal, T. K. Sridharan, K. Qiu +3
The spectral energy distributions (SEDs), spanning the mid-infrared to millimeter wavelengths, of a sample of 13 high-mass protostellar objects (HMPOs) were studied using a large a…
Mid-Infrared Photometry and Spectra of Three High Mass Protostellar Candidates at IRAS 18151-1208 and IRAS 20343+4129
M. F. Campbell, T. K. Sridharan, H. Beuther +8
We present arcsecond-scale mid-ir photometry (in the 10.5 micron N band and at 24.8 microns), and low resolution spectra in the N band (R~100) of a candidate high mass protostellar…
The 10^5Lsun High-Mass Protostellar Object IRAS23151+5912
H. Beuther, Q. Zhang, T. R. Hunter +2
While most sources above 10^5Lsun have already formed an Ultracompact HII region (UCHII), this is not necessarily the case for sources of lower luminosity. Characterizing sources i…
Outflow and dense gas emission from massive Infrared Dark Clouds
H. Beuther, T. K. Sridharan
Infrared Dark Clouds are expected to harbor sources in different, very young evolutionary stages. To better characterize these differences, we observed a sample of 43 massive Infra…
A Jet-like Outflow toward the High-Mass (Proto)stellar Object IRAS 18566+0408
Qizhou Zhang, T. K. Sridharan, Todd R. Hunter +3
We performed interferometric observations of a high-mass protostellar candidate IRAS 18566+0408 in the \nh3 (J,K)=(1,1), (2,2) and (3,3) inversion transitions, the SiO J=2-1 and HC…
IRAS 18317-0757: A Cluster of Embedded Massive Stars and Protostars
T. R. Hunter, Q. Zhang, T. K. Sridharan
We present high-resolution, multiwavelength continuum and molecular-line images of the massive star forming region IRAS 18317-0757. The IR through mm spectral energy distribution c…