Infrared observations of Sharpless 2-106, a possible location for star formation.
Abstract
This paper reports discovery and observations, in the wavelength range from 1.25 to 3.4 microns, of a bright infrared source in Sharpless 2-106. Results are interpreted by a model of stellar core surrounded by an emitting dust shell at about 2000 K and a cooler external dust layer responsible for the strong local absorption. This object is found near the center of a dense H II knot surrounded by a compact H II region. From the large surface brightness found at 3.4 microns, which is much larger than that for free-free emission, a bright extended source is expected at longer wavelengths. A nonspherical distribution of the absorbing material is suggested to explain the morphology of the nebula. This may be due to possible rotational effects on the cloud and the contracting protostar.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- May 1975
- Bibcode:
- 1975A&A....40..441S
- Keywords:
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- Infrared Spectra;
- Protostars;
- Star Formation;
- Stellar Spectra;
- Astronomical Photometry;
- Cosmic Dust;
- Energy Spectra;
- H Ii Regions;
- Point Sources;
- Stellar Envelopes;
- Astrophysics