Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...342.1134k&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 342, July 15, 1989, p. 1134-1141. Research supported by the Smithsonian Ins
Astronomy and Astrophysics
Astrophysics
17
Infrared Spectra, Orion Constellation, Pre-Main Sequence Stars, Stellar Mass Accretion, Stellar Mass Ejection, Variable Stars, Accretion Disks, Angular Velocity, High Resolution, Stellar Rotation
Scientific paper
High-spectral-resolution 2-micron spectroscopy of two FU Ori variables, V1057 Cyg and FU Ori, confirms that the ratio of IR-to-optical v sin i in these objects is significantly smaller than unity. The observed ratio is slightly larger than predictions of simple accretion-disk models but is consistent with strict Keplerian rotation given the uncertainties in the models. Blueshifted CO absorption is observed in FU Ori and in V1057 Cyg, suggesting mass loss at rates less than about 10 to the -7th solar mass/yr from the outer disk regions. The data suggest mass ejection in FU Ori is dominated by flows from inner disk regions. The mass-loss rate in FU Ori appears to be variable.
Hartmann Lee
Kenyon Scott. J.
No associations
LandOfFree
High-resolution infrared spectra of FU Orionis variables - Keplerian rotation and mass loss does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with High-resolution infrared spectra of FU Orionis variables - Keplerian rotation and mass loss, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-resolution infrared spectra of FU Orionis variables - Keplerian rotation and mass loss will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1703885