Far-infrared observations of young clusters embedded in the R Coronae Australis and Rho Ophiuchi dark clouds

Abstract

view Abstract Citations (34) References (33) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Far-infrared observations of young clusters embedded in the R CoronaeAustralis and rho Ophiuchi dark clouds. Wilking, B. A. ; Harvey, P. M. ; Joy, M. ; Hyland, A. R. ; Jones, T. J. Abstract Multicolor far-infrared maps in two nearby dark clouds, R Coronae Australis and Rho Ophiuchi, have been made in order to investigate the individual contribution of low-mass stars to the energetics and dynamics of the surrounding gas and dust. Emission from cool dust associated with five low-mass stars has been detected in CrA and four in Rho Oph; their far-infrared luminosities range from 2 solar luminosities to 40 solar luminosities. When an estimate of the bolometric luminosity was possible, it was found that typically more than 50 percent of the star's energy was radiated longward of 20 microns. Meaningful limits to the far-infrared luminosities of an additional 11 association members in CrA and two in Rho Oph were also obtained. The dust optical depth surrounding the star R CrA appears to be asymmetric and may control the dynamics of the surrounding molecular gas. The implications of these results for the cloud energetics and star formation efficiency in these two clouds are discussed. Publication: The Astrophysical Journal Pub Date: June 1985 DOI: 10.1086/163223 Bibcode: 1985ApJ...293..165W Keywords: Far Infrared Radiation; Infrared Stars; Molecular Clouds; Nebulae; Ophiuchi Clouds; Star Clusters; Astronomical Maps; Dust; Luminosity; Photographic Plates; Stellar Evolution; Astrophysics full text sources ADS | data products SIMBAD (18)