Emission-line spectrophotometry of the pre-main-sequence star AS 353A

Details Emission-line spectrophotometry of the pre-main-sequence star AS 353A Emission-line spectrophotometry of the pre-main-sequence star AS 353A

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...237..369e&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 237, no. 2, Oct. 1990, p. 369-384.

Astronomy and Astrophysics

Astrophysics

21

Emission Spectra, Herbig-Haro Objects, Line Spectra, Pre-Main Sequence Stars, Stellar Spectrophotometry, T Tauri Stars, Echelette Gratings, Interstellar Extinction, Radial Velocity, Spectral Energy Distribution

Scientific paper

The paper deals with a quantitative photometric study of the emission line spectrum of the T Tau star AS 353A. The reddening correction of the spectrum is outlined, and the reddening-corrected emission-line fluxes are presented. The line fluxes are compared with those obtained with the same echellette spectrometer for T Tau, and it is found that the density in the emission-line forming regions is higher in AS 353 than in T Tau. A lower limit for the column density of hydrogen atoms in n = 3 in AS 353 is determined to be 43 times higher than the upper limit for this column density in T Tau. Two possible values for the reddening of AS 353A are discussed.

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