A radio survey of weak T Tauri stars in Taurus-Auriga
- Pennsylvania State Univ., University Park (USA) Wisconsin Univ., Madison (USA) Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (USA)
A multi-epoch 5 GHz survey of candidate or confirmed weak T Tauri stars in the Taurus-Auriga molecular cloud complex was conducted with the Very Large Array. The stars were chosen from those having detectable X-ray or chromospheric emission, and weak-emission-line pre-main-sequence stars found by other means. Snapshots of 99 VLA fields containing 119 candidate stars were obtained with a sensitivity of 0.7 mJy; most fields were observed on two or three dates. Nine radio sources coincident with cataloged stars were found. One may be an RS CVn binary system; the other eight are pre-main-sequence stars. Three of the detected stars - HD 283447, V410 Tau, and FK X-ray 1 - were previously known radio sources. Five new detections are Herbig's Anon 1, Hubble 4, HDE 283572, Elias 12, and HK Tau/c. At least five of the sources are variable, and no linear or circular polarization was found. Several lines of evidence suggest that the radio-detected weak T Tauri stars are quite young, perhaps younger on average than nondetected stars. 54 refs.
- OSTI ID:
- 6205061
- Journal Information:
- Astronomical Journal; (USA), Vol. 100; ISSN 0004-6256
- Country of Publication:
- United States
- Language:
- English
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GENERAL PHYSICS
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RADIOWAVE RADIATION
AGE ESTIMATION
BINARY STARS
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PHOTOGRAPHY
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X RADIATION
ELECTROMAGNETIC RADIATION
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640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources