Massive open star clusters using the VVV survey IV. WR 62-2, a new very massive star in the core of the VVV CL041 cluster

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F15%3A00456015" target="_blank" >RIV/67985815:_____/15:00456015 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1051/0004-6361/201525958" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201525958</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/201525958" target="_blank" >10.1051/0004-6361/201525958</a>

Result language
angličtina
Original language name
Massive open star clusters using the VVV survey IV. WR 62-2, a new very massive star in the core of the VVV CL041 cluster
Original language description
We present the fourth article in a series of papers focussed on young and massive clusters discovered in the VVV survey. This article is dedicated to the cluster VVV CL041, which contains a new very massive star candidate, WR62-2. Following the methodology presented in the first paper of the series, wide-field, deep JHK(s) VVV observations, combined with new infrared spectroscopy, are employed to constrain fundamental parameters (distance, reddening, mass, age) of VVV CL041. We confirm that the cluster VVV CL041 is a young (less than 4 Myr) and massive (3 +/- 2 x 10(3) M-circle dot) cluster, and not a simple asterism. It is located at a distance of 4.2 +/- 0.9 kpc, and its reddening is A(V) = 8.0 +/- 0.2mag, which is slightly lower than the average for the young clusters towards the centre of the Galaxy. Spectral analysis shows that the most luminous star of the cluster, of the WN8h spectral type, is a candidate to have an initial mass larger than 100 M-circle dot.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)

Project
<a href="/en/project/GA14-02385S" target="_blank" >GA14-02385S: Transfer of polarized radiation in stellar atmospheres</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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