Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...19915607w&link_type=abstract
American Astronomical Society, 199th AAS Meeting, #156.07; Bulletin of the American Astronomical Society, Vol. 34, p.563
Astronomy and Astrophysics
Astronomy
Scientific paper
We present the results of multi-object spectroscopic observations of 140 stars located in a one square degree field centered on the Rho Ophiuchi cloud. The observations cover the 582-870 nm spectral region of a sample of stars with R<19 that were preselected to be candidate classical T Tauri stars. A total of 78 objects are identified as young stellar objects and half of the sample has spectral types of M3.5 or later. This includes two M8 stars with strong H-alpha emission and x-ray emission that are probable brown dwarfs. Combining these data with R and I band imaging of the cloud, we derive effective temperatures and bolometric luminosities for the young stellar objects. The distribution of ages for this sample is compared to that of low mass objects in the Upper Sco OB association and in the central core of the Rho Oph cloud. This work has been supported by NSF grant AST-9820898.
Greene Thomas P.
Meyer Michael R.
Robinson John G.
Wilking Bruce A.
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