Abstract
view Abstract Citations (192) References (64) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS X-Ray Sources in Regions of Star Formation. I. The Naked T Tauri Stars Walter, F. M. Abstract Einstein X-ray observations of regions of active star formation in Taurus, Ophiuchus, and Corona Australis show a greatly enhanced surface density of stellar X-ray sources over that seen in other parts of the sky. Many of the X-ray sources are identified with low-mass, pre-main-sequence stars which are not classical T Tauri stars. The X-ray, photometric, and spectroscopic data for these stars are discussed. Seven early K stars in Oph and CrA are likely to be 1-solar-mass post-T Tauri stars with ages of 10-million yr. The late K stars in Taurus are not post-T Tauri, but 'naked' T Tauri stars, which are coeval with the T Tauri stars, differing mainly in the lack of a circumstellar envelope. Publication: The Astrophysical Journal Pub Date: July 1986 DOI: 10.1086/164367 Bibcode: 1986ApJ...306..573W Keywords: Pre-Main Sequence Stars; Star Formation; T Tauri Stars; X Ray Sources; Astronomical Photometry; Chromosphere; Early Stars; K Stars; Main Sequence Stars; Space Density; Stellar Evolution; Stellar Spectra; Astrophysics; STARS: PRE--MAIN-SEQUENCE; X-RAYS: SOURCES full text sources ADS | data products SIMBAD (38) NED (1) MAST (1) Related Materials (5) Part 2: 1987ApJ...314..297W Part 3: 1988AJ.....96..297W Part 4: 1992AJ....104..758W Part 5: 1994AJ....107..692W Part 6: 1997AJ....114.1544W
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