Hamilton echelle spectra of young stars. I - Optical veiling
1990; IOP Publishing; Volume: 363; Linguagem: Inglês
10.1086/169374
ISSN1538-4357
Autores Tópico(s)Stellar, planetary, and galactic studies
Resumoview Abstract Citations (213) References (40) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Hamilton Echelle Spectra of Young Stars. I. Optical Veiling Basri, Gibor ; Batalha, Celso Abstract An extensive set of veiling measurements of T Tauri stars covering almost the entire optical spectrum is presented. These are based on Hamilton echelle spectra obtained during 1987-1989. A full range of T Tauri stars, from 'weak' to 'continuum' stars is studied; in some cases, several spectra of a given target are seen in which the veiling has changed, occasionally dramatically. Veilings are determined using two new methods: one which concentrates on the residual intensities of selected spectral lines, and the other which compares the autocorrelation functions for a T Tauri star and a veiled standard. The general shape of the veiling is often as predicted by accretion disk models: almost flat in the red and increasing in the blue. Cooler stars have generally higher veiling, implying that the veiling power is relatively independent of stellar mass. The relation between veiling and the narrow and broad emission lines supports a nonstellar origin for the veiling and broad line components, and a stellar origin for the narrow lines. Publication: The Astrophysical Journal Pub Date: November 1990 DOI: 10.1086/169374 Bibcode: 1990ApJ...363..654B Keywords: Accretion Disks; Early Stars; Echelle Gratings; Stellar Spectrophotometry; T Tauri Stars; Emission Spectra; H Lines; Stellar Evolution; Stellar Mass Accretion; Stellar Spectra; Astrophysics; SPECTROPHOTOMETRY; STARS: ACCRETION; STARS: PRE--MAIN-SEQUENCE full text sources ADS | data products SIMBAD (56) Related Materials (1) Part 2: 1995AJ....109.2800J
Referência(s)