SIMBAD references

2008ApJ...673..954C - Astrophys. J., 673, 954-967 (2008/February-1)

Mid-infrared photometry and spectra of three high-mass protostellar candidates at IRAS 18151-1208 and IRAS 20343+4129.

CAMPBELL M.F., SRIDHARAN T.K., BEUTHER H., LACY J.H., HORA J.L., ZHU Q., KASSIS M., SAITO M., DE BUIZER J.M., FUNG S.H. and JOHNSON L.C.

Abstract (from CDS):

We present arcsecond-scale mid-IR photometry (in the 10.5 µm N band and at 24.8 µm), and low-resolution spectra in the N band (R≃100) of a candidate high-mass protostellar object (HMPO) in IRAS 18151-1208 and of two HMPO candidates in IRAS 20343+4129, IRS 1 and IRS 3. In addition, we present high-resolution mid-IR spectra (R≃80,000) of the two HMPO candidates in IRAS 20343+4129. These data are fitted with simple models to estimate the masses of gas and dust associated with the mid-IR-emitting clumps, the column densities of overlying absorbing dust and gas, the luminosities of the HMPO candidates, and the likely spectral type of the HMPO candidate for which [Ne II] 12.8 µm emission was detected (IRAS 20343+4129 IRS 3). We suggest that IRAS 18151-1208 is a pre-ultracompact H II region HMPO, IRAS 20343+4129 IRS 1 is an embedded young stellar object with the luminosity of a B3 star, and IRAS 20343+4129 IRS 3 is a B2 ZAMS star that has formed an ultracompact H II region and disrupted its natal envelope.

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Journal keyword(s): Stars: Circumstellar Matter - ISM: H II Regions - Infrared: ISM - ISM: Jets and Outflows - Stars: Formation - Stars: Pre-Main-Sequence

Simbad objects: 12

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