On the near-infrared spectrum of FU Orionis

Details On the near-infrared spectrum of FU Orionis On the near-infrared spectrum of FU Orionis

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...383..752c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 383, Dec. 20, 1991, p. 752-756.

Astronomy and Astrophysics

Astrophysics

31

Accretion Disks, Infrared Spectra, Near Infrared Radiation, Pre-Main Sequence Stars, Stellar Models, Stellar Spectra, Absorption Spectra, Carbon Monoxide, Molecular Absorption, Stellar Mass Accretion, Stellar Spectrophotometry, Water Vapor

Scientific paper

The near-infrared spectrum of a steady accretion-disk model intended to represent the premain-sequence object FU Ori. The theoretical models quantitatively match the strong water vapor absorption of FU Ori observed between about 1.4 and 2.4 microns. The first-overtone 2.3-micron CO absorption lines found in FU Ori are also reproduced fairly well by the model calculations. The rotational broadening of the model CO lines, scaled to the observed rotational broadening at optical wavelengths, is in slightly better agreement with observations than in previous simple models. The models predict additional molecular features, which should be observed to provide further tests of the theory. The present calculations further demonstrate that steady accretion-disk models can provide quantitative explanations of the spectrum of FU Ori.

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