Infrared observations of NGC 2071 (IRS) and AFGL 490: two low-luminosity young stars.
Abstract
Infrared observations are presented of two compact sources associated with molecular clouds. Photometry from 2 to 200 microns of the source associated with an OH maser in NGC 2071, OH 205.1-14.1, shows a steep increase in flux from 2 to 50 microns. Scans at several wavelengths fail to resolve the source. Photometry at 50-200 microns of the other object, GL 490, when combined with earlier 2-20-micron spectrophotometry, shows an infrared energy distribution that is much broader than that of the NGC 2071 source. Both sources are interpreted as young, possibly pre-main-sequence objects with differences in energy distributions due principally to differences in the distribution of circumstellar matter.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- May 1979
- DOI:
- 10.1086/157033
- Bibcode:
- 1979ApJ...229..990H
- Keywords:
-
- Early Stars;
- Hydrogen Clouds;
- Infrared Stars;
- Stellar Evolution;
- Stellar Luminosity;
- Infrared Spectra;
- Main Sequence Stars;
- Spectral Energy Distribution;
- Stellar Spectrophotometry;
- Astrophysics;
- Infrared Sources:Pre-Main-Sequence Stars;
- Infrared Sources:Spectra