Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....96..297w&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 96, July 1988, p. 297-325.
Astronomy and Astrophysics
Astronomy
369
Star Formation, Stellar Spectrophotometry, T Tauri Stars, X Ray Sources, Early Stars, Infrared Astronomy, Molecular Clouds
Scientific paper
The authors report results from a multispectral investigation of stellar counterparts of X-ray sources in the general region of the Taurus-Auriga star-formation complex. They discuss 28 new low-mass pre-main-sequence "naked T Tauri" stars, bringing the census of naked T Tauri stars to 44 in the Tau-Aur region. The authors discuss the optical spectra and the optical and near-IR colors. They show that these stars are basically normal stars with ages of 1 - 40×106yr. There is no evidence for IR or UV excesses. Chromospheric and coronal surface fluxes are comparable to those of the most active main-sequence stars and the RS CVn systems. The authors show that the chromospheric fluxes do not increase for stellar ages <108yr, confirming the postulated exponential decay of stellar activity.
Brown Adrian
Mathieu Robert D.
Myers Phil C.
Vrba Fred J.
Walter Frederick M.
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