![](/images/graphics-bg.png)
A New Galactic Wolf-Rayet Star in Centaurus
Author
Source
ISRN Astronomy and Astrophysics
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-09-14
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
I communicate the detection of a new Galactic Wolf-Rayet star (WR60a) in Centaurus.
The H- and K-band spectra of WR60a show strong carbon near-infrared emission lines, characteristic of Wolf-Rayet stars of the WC5-7 subtype.
Adopting mean absolute magnitude MK and mean intrinsic (J-KS) and (H-KS) colours, it was found that WR60a suffers a mean visual extinction of 3.8±1.3 magnitudes, being located at a probable heliocentric distance of 5.2±0.8 Kpc, which for the related Galactic longitude (l=312) puts this star probably in the Carina-Sagittarius arm at about 5.9 kpc from the Galactic center.
I searched for clusters in the vicinity of WR60a and in principle found no previously known clusters in a search radius region of several tens arcminutes.
The detection of a well-isolated WR star induced us to seek for some still unknown cluster, somewhere in the vicinity of WR60a.
From inspection of 5.8 μm and 8.0 μm Spitzer/IRAC GLIMPSE images of the region around the new WR star, strong mid-infrared extended emission at about 13.5 arcmin south-west of WR60a was found.
The study of the H-KS colour distribution of point sources associated with the extended emission reveals the presence of a new Galactic cluster candidate probably formed by at least 85 stars.
American Psychological Association (APA)
Roman-Lopes, A.. 2011. A New Galactic Wolf-Rayet Star in Centaurus. ISRN Astronomy and Astrophysics،Vol. 2011, no. 2011, pp.1-6.
https://search.emarefa.net/detail/BIM-486795
Modern Language Association (MLA)
Roman-Lopes, A.. A New Galactic Wolf-Rayet Star in Centaurus. ISRN Astronomy and Astrophysics No. 2011 (2011), pp.1-6.
https://search.emarefa.net/detail/BIM-486795
American Medical Association (AMA)
Roman-Lopes, A.. A New Galactic Wolf-Rayet Star in Centaurus. ISRN Astronomy and Astrophysics. 2011. Vol. 2011, no. 2011, pp.1-6.
https://search.emarefa.net/detail/BIM-486795
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-486795