AAS 206th Meeting, 29 May - 2 June 2005
Session 7 Star Formation
Poster, Monday, 9:20am-6:30pm, Tuesday, 10:00am-7:00pm, May 30, 2005, Ballroom A

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[7.12] Line-of-Sight Extinction Toward T Tauri Stars

D. A. Wasikowski, E. L. Gibb, T. W. Rettig (University of Notre Dame), S. D. Brittain (NOAO), J. R. Haywood (University of Notre Dame), C. Kulesa (University of Arizona)

We present medium resolution (RP~2500) spectra for several young T-Tauri stars in the near-IR region between 0.8 and 5 \mum acquired with the SpeX spectrometer at NASA's Infrared Telescope Facility. The spectra are rich in H I recombination lines. We report the fluxes of the emission lines in the Paschen and Brackett series and compare the relative line strengths with predicted theoretical values to estimate line-of-sight extinction. We explore the suppression of fluxes for lower n lines in the series due to opacity and the resulting implications upon extinction calculations.

This work was supported by the Research Experience for Undergraduates Program and NSF grant AST 02-05881.

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