Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj....100.1610o&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 100, Nov. 1990, p. 1610-1617. Research supported by TRW, Inc. and Sun Microsystems,
Astronomy and Astrophysics
Astronomy
59
Radio Sources (Astronomy), Sky Surveys (Astronomy), T Tauri Stars, Astronomical Photography, Binary Stars, Molecular Clouds, Stellar Envelopes, Very Large Array (Vla)
Scientific paper
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.
Feigelson Eric D.
Mathieu Robert D.
Myers Philip C.
O'Neal Douglas
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