Confirmation of the Luminous Blue Variable Status of MWC 930
Joint Authors
Reichart, D. E.
Rudy, R. J.
Puetter, R. C.
Ivarsen, K. M.
Haislip, J. B.
Juárez Jiménez, J. A.
Laag, E. A.
Manset, N.
Levato, H.
Zharikov, S. V.
Miroshnichenko, A. S.
Grosso, M.
Nysewander, M. C.
Crawford, K. B.
Zsargo, Janos
Groh, J. H.
LaCluyze, A. P.
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-03-23
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
We present spectroscopic and photometric observations of the emission-line star MWC 930 (V446 Sct) during its long-term optical brightening in 2006–2013.
Based on our earlier data we suggested that the object has features found in Luminous Blue Variables (LBV), such as a high luminosity (~3 105 L⊙), a low wind terminal velocity (~140 km s−1), and a tendency to show strong brightness variations (~1 mag over 20 years).
For the last ~7 years it has been exhibiting a continuous optical and near-IR brightening along with a change of the emission-line spectrum appearance and cooling of the star’s photosphere.
We present the object’s V-band light curve, analyze the spectral variations, and compare the observed properties with those of other recognized Galactic LBVs, such as AG Car and HR Car.
Overall we conclude the MWC 930 is a bona fide Galactic LBV that is currently in the middle of an S Dor cycle.
American Psychological Association (APA)
Miroshnichenko, A. S.& Manset, N.& Zharikov, S. V.& Zsargo, Janos& Juárez Jiménez, J. A.& Groh, J. H.…[et al.]. 2014. Confirmation of the Luminous Blue Variable Status of MWC 930. Advances in Astronomy،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-448069
Modern Language Association (MLA)
Miroshnichenko, A. S.…[et al.]. Confirmation of the Luminous Blue Variable Status of MWC 930. Advances in Astronomy No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-448069
American Medical Association (AMA)
Miroshnichenko, A. S.& Manset, N.& Zharikov, S. V.& Zsargo, Janos& Juárez Jiménez, J. A.& Groh, J. H.…[et al.]. Confirmation of the Luminous Blue Variable Status of MWC 930. Advances in Astronomy. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-448069
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-448069
