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J/A+A/440/595       RW Aur spectra                           (Alencar+, 2005)

The extreme T Tauri star RW Aur: accretion and outflow variability. Alencar S.H.P., Basri G., Hartmann L., Calvet N. <Astron. Astrophys., 440, 595-608 (2005)> =2005A&A...440..595A
ADC_Keywords: Stars, pre-main sequence ; Spectroscopy Keywords: line: profiles - stars: formation - stars: pre-main sequence - stars: winds, outflows - stars: individual: RW Aur Abstract: We present an analysis of the classical T Tauri star RW Aur A, based on 77 echelle spectra obtained at Lick Observatory over a decade of observations. RW Aur, which has a higher than average mass accretion rate among T Tauri stars, exhibits permitted (Halpha, Hbeta, Ca II, He I, NaD) and forbidden ([OI]6300Å) emission lines with strong variability. The permitted lines display multiple periodicities over the years, often with variable accretion (redshifted) and outflow (blueshifted) absorption components, implying that both processes are active and changing in this system. The broad components of the different emission lines exhibit correlated behavior, indicating a common origin for all of them. We compute simple magnetospheric accretion and disk-wind Halpha, Hbeta and NaD line profiles for RW Aur. The observed Balmer emission lines do not have magnetospheric accretion line profiles. Our modeling indicates that the wind contribution to these line profiles is very important and must be taken into account. Our results indicate that the Halpha, Hbeta and NaD observed line profiles of RW Aur are better reproduced by collimated disk-winds starting from a small region near the disk inner radius. Description: The observations, obtained over a decade, were carried out at Lick Observatory. ************************************************************************** * * * A major hard disk failure on the author's workstation containing * * the FITS files of the spectra made the files actually unavailable * * * ************************************************************************** Objects: ---------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------- 05 07 49.6 +30 24 05 RW Aur = HD 240764 ---------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 31 77 Journal of observations
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 2 I2 --- ObsNo Observation number 4- 13 A10 "YYYY/MM/DD" UT date of observation 15- 19 A5 "h:m" Obs.time UT date of observation 21- 31 F11.3 d JD Julian date of observation
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 27-Jul-2006
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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