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https://doi.org/10.1086/187868
Copy DOIJournal: The Astrophysical Journal | Publication Date: May 1, 1995 |
Citations: 30 |
view Abstract Citations (37) References (19) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Detection of Shocked Molecular Hydrogen in Infrared Companions to T Tauri Stars: Evidence for Ongoing Accretion Herbst, T. M. ; Koresko, C. D. ; Leinert, Christoph Abstract 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. Publication: The Astrophysical Journal Pub Date: May 1995 DOI: 10.1086/187868 Bibcode: 1995ApJ...444L..93H Keywords: 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; Astronomy; ACCRETION; ACCRETION DISKS; INFRARED: STARS; STARS: BINARIES: CLOSE; STARS: CIRCUMSTELLAR MATTER; STARS: PRE--MAIN-SEQUENCE full text sources ADS | data products SIMBAD (5)
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