Other
Scientific paper
May 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...444l..93h&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 444, no. 2, p. L93-L96
Other
31
Accretion Disks, Companion Stars, Hydrogen, Infrared Stars, Molecular Spectra, Shock Spectra, Stellar Envelopes, T Tauri Stars, Shock Heating, Speckle Interferometry, Spectral Energy Distribution, Spectrum Analysis, Stellar Spectrophotometry
Scientific paper
We report the detection of the 2.12 micrometers, nu = 1-0 S(1) emission line of molecular hydrogen spatially confined to the infrared companions of the Haro 6-10 and UY Aur binary systems. The primaries in both sources appear to be relatively normal pre-main-sequence stars. The K-band spectrum of the Haro 6-10 companion is unusually red and displays no characteristic stellar features. The UY Aur infrared companion, on the other hand, is undoubtedly a star. Our nondetection of the nu = 2-1 S(1) line of H2 implies line ratios inconsistent with a fluorescent origin for the emission and suggests that it is produced by shock heating. These observations strengthen the view that the infrared companions are experiencing ongoing accretion.
Herbst Thomas M.
Koresko Chris D.
Leinert Christoph
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