A Brgamma Probe of Disk Accretion in T Tauri Stars and Embedded Young Stellar Objects

Details A Brgamma Probe of Disk Accretion in T Tauri Stars and Embedded Young Stellar Objects A Brgamma Probe of Disk Accretion in T Tauri Stars and Embedded Young Stellar Objects

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aj....116.2965m&link_type=abstract

The Astronomical Journal, Volume 116, Issue 6, pp. 2965-2974.

Astronomy and Astrophysics

Astronomy

169

Stars: Pre-Main-Sequence, Techniques: Spectroscopic

Scientific paper

We report on observations of Pabeta and Brgamma for a sample of classical T Tauri stars in Taurus and find a tight correlation between the emission-line luminosities and the accretion luminosity as measured from the hot continuum excess. We use the Brgamma luminosity correlation to calculate accretion luminosities in highly reddened young stars with existing line measurements. The distribution of accretion luminosities is similar in Taurus and Ophiuchus Class II sources. For the deeply embedded Class I objects, the accretion luminosities are in general less than the bolometric luminosities, which implies that the disk accretion rates are significantly lower than the envelope infall rates. We find that the central sources of many Class I objects are quite similar to their Class II counterparts.

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