High spectral resolution infrared observations of V1057 Cygni

Journal Article · Sun Nov 01 00:00:00 EST 1987 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/165737· OSTI ID:5293796

Hartmann, L; Kenyon, S J

High-resolution near-infrared spectra of V1057 Cygni obtained in 1986 with the KPNO 4-m Fourier transform spectrometer provide support for a previously proposed accretion disk model. The model predicts that the observed rotational broadening of spectral lines should be smaller in the infrared than in the optical. The present observations show that V1057 Cyg rotates more slowly at 2.3 microns than at 6000 A by an amount quantitatively consistent with the simple disk models. The absence of any radial velocity variations in either the infrared or optical spectral regions supports the suggestion that the accreted material arises from a remnant disk of protostellar material. 19 references.

• Research Organization: Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (USA)
• OSTI ID: 5293796
• Journal Information: Astrophys. J.; (United States), Vol. 322
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
T TAURI STARS
INFRARED SPECTRA
STAR MODELS
ACCRETION DISKS
MASS TRANSFER
NEAR INFRARED RADIATION
PROTOSTARS
RADIAL VELOCITY
STAR ACCRETION
STAR EVOLUTION
ELECTROMAGNETIC RADIATION
ERUPTIVE VARIABLE STARS
INFRARED RADIATION
MATHEMATICAL MODELS
RADIATIONS
SPECTRA
STARS
VARIABLE STARS
VELOCITY
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources