A search for radio emission from flare stars in the Pleiades

Abstract

view Abstract Citations (18) References (33) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Search for Radio Emission from Flare Stars in the Pleiades Bastian, T. S. ; Dulk, G. A. ; Slee, O. B. Abstract The authors have used the VLA to search for radio emission from flare stars in the Pleiades. Two observational strategies were employed. First, about 1/2 deg2 of the cluster, containing ≈40 known flare stars, was mapped at 1.4 GHz at two epochs. More than 120 sources with flux densities >0.3 mJy exist on the maps. Detailed analysis shows that all but two of these sources are probably extragalactic. The two sources identified as stellar are probably not Pleiades members as judged by their proper motions; rather, based on their colors and magnitudes, they seem to be foreground G stars. The second observational strategy, where five rapidly rotating flare stars were observed at three frequencies, yielded no detections. The 0.3 mJy flux-density limit of this survey is such that only the most intense outbursts of flare stars in the solar neighborhood could have been detected if those stars were at the distance of the Pleiades. Hence, while the activity on flare stars in the Pleiades may be somewhat in excess of that on flare stars in the solar neighborhood, the "superflares" that have been occasionally reported in the Pleiades and in Orion must be very rare or nonexistent. Publication: The Astronomical Journal Pub Date: March 1988 DOI: 10.1086/114678 Bibcode: 1988AJ.....95..794B Keywords: Color-Magnitude Diagram; Flare Stars; Pleiades Cluster; Radio Emission; Stellar Flares; X Ray Sources; Interstellar Matter; Orion Constellation; Radio Sources (Astronomy); Solar Neighborhood; Star Formation; Stellar Mass; Astrophysics; STARS: ATMOSPHERES; STARS: MAGNETIC full text sources ADS | data products SIMBAD (2)