Fleming, Thomas A.

Contact Email: taf@as.arizona.edu
Institute: Steward Observatory
University of Arizona
First Coauthor: Mark S. Giampapa
Institute: National Solar Observatory, NOAO
Subject Area: Single Stars
Waveband: X-rays
Technique: Photometry
Presentation: Poster Display
Title: The Quiescent Corona of VB 10
Abstract: We present results from a recent Chandra ACIS observation of the M8 dwarf star VB 10, a star near the hydrogen-burning mass limit. Until now, VB 10 has only been detected to flare at X-ray wavelengths. We can now report that non-flare, "quiescent," X-ray emission has been detected with a luminosity, Lx = 2.5E+25 ergs/s. This is consistent with previous non-detections of quiescent emission from VB 10. We discuss the possible coronal heating mechanisms which could perate on such a low-mass star and the implications this discovery has for the topic of brown dwarf coronae.