Radio Detections of Stellar Winds from the Pistol Star and Other Stars in the Galactic Center Quintuplet Cluster | Zendy

Cornelia Lang | Zendy; D. F. Figer | Zendy; W. M. Goss | Zendy; M. Morris | Zendy

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Radio Detections of Stellar Winds from the Pistol Star and Other Stars in the Galactic Center Quintuplet Cluster

Author(s) -

Cornelia Lang,

D. F. Figer,

W. M. Goss,

M. Morris

Publication year - 1999

Publication title -

the astronomical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.61

H-Index - 271

eISSN - 1538-3881

pISSN - 0004-6256

DOI - 10.1086/301092

Subject(s) - physics , astrophysics , stars , galactic center , astronomy , star cluster , cluster (spacecraft) , young stellar object , o type star , star formation , computer science , programming language

VLA images of the Sickle and Pistol H II regions near the Galactic center at3.6 and 6 cm reveal six point sources in the region where the dense Quintupletstellar cluster is located. The spectral indices of five of these sourcesbetween 6 cm and 3.6 cm have values of alpha = +0.5 to +0.8, consistent withthe interpretation that the radio sources correspond to ionized stellar windsof the massive stars in this cluster. The radio source associated with thePistol Star shows alpha = -0.4 +/- 0.2, consistent with a flat or slightlynon-thermal spectrum.Comment: 9 pages, incl. 2 figures; to appear in The Astronomical Journa

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