Radio Detections of Stellar Winds from the Pistol Star and Other Stars in the Galactic Center Quintuplet Cluster
Cornelia C. Lang(1,2), Don F. Figer(2), W.M. Goss(1), and Mark Morris(2)
(1) National Radio Astronomy Observatory, Box 0, Socorro, NM 87801, email: clang@nrao.edu
(2) Division of Astronomy, 8371 Math Sciences Building, Box 951562, University of California at Los Angeles, LA, CA 90095-1562
Paper: to appear in the Astronomical Journal, Nov 1999
Abstract:
VLA images of the Sickle and Pistol H II regions near the Galactic center
at 3.6 and 6 cm reveal six point sources in the region where the
dense Quintuplet stellar cluster is located.
The spectral indices of five of these sources between 6 cm and 3.6 cm have values of alpha = +0.5 to +0.8, (where S_ nu \propto
nu alpha ), consistent with the interpretation
that the radio sources correspond to ionized stellar winds of
the massive stars in this cluster. The radio source associated with the
Pistol Star shows alpha = -0.4\p0.2, consistent with a flat or slightly
non-thermal spectrum.
Preprints available from the authors at clang@zia.aoc.NRAO.EDU
,
or the raw TeX (no figures) if you click here.
Back to the gcnews home-page.