Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

X-ray sources in regions of star formation. II. The pre-main-sequence G star HDE 283572

Journal Article · · Astrophys. J.; (United States)
DOI:https://doi.org/10.1086/165059· OSTI ID:6325109
This paper reports the detection of HDE 283572, a ninth-magnitude G star 8 arcmin south of RY Tau, as a bright X-ray source. The observations reveal this object to be a fairly massive (about 2 solar masses) pre-main-sequence star associated with the Taurus-Auriga star formation complex. It exhibits few of the characteristics of the classical T Tauri stars and is a good example of a naked T Tauri star. The star is a mid-G subgiant, of about three solar radii and rotates with a period of 1.5 d. The coronal and chromospheric surface fluxes are similar to those of the most active late type stars (excluding T Tauri stars). The X-ray and UV lines most likely arise in different atmospheric structures. Radiative losses are some 1000 times the quiet solar value and compare favorably with those of T Tauri stars. 49 references.
Research Organization:
Colorado Univ., Boulder; Joint Institute for Laboratory Astrophysics, Boulder, CO; Computer Sciences Corp., El Segundo, CA; Naval Observatory, Flagstaff, AZ
OSTI ID:
6325109
Journal Information:
Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 314; ISSN ASJOA
Country of Publication:
United States
Language:
English