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The nature of the embedded population in the Rho Ophiuchi dark cloud - Mid-infrared observations
Lada, C. J.; Wilking, B. A.
AA(Steward Observatory, Tucson, AZ; Hawaii, University, Mauna Kea, HI), AB(Texas, University, Austin, TX; Hawaii, University, Mauna Kea, HI)
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 287, Dec. 15, 1984, p. 610-621. (ApJ Homepage)
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NASA/STI Keywords:
Infrared Astronomy, Molecular Clouds, Star Clusters, Stellar Evolution, Stellar Luminosity, Bolometers, Early Stars, Millimeter Waves, T Tauri Stars
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The authors present results of mid-infrared (primarily 10 and 20 mum wavelength) observations of previously identified members of the embedded populatin of the rho Ophiuchi dark cloud. These observations enable determination of broad-band energy distributions for 32 of the 44 sources known to be embedded in the cloud. The majority of the sources emit the bulk of their luminosity between 1 mum and 20 mum. These sources apparently are surrounded by dust shells and are probably pre-main-sequence in nature. It is found that the embedded cluster is predominantly composed of low-luminosity objects with luminosities in the range 0.1 <= L/L_sun; <= 25. When corrected for observational selection effects, the resulting luminosity function appears to be deficient in intermediate-luminosity stars compared with the luminosity function for field stars.

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