The January 2015 outburst of a red nova in M31
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F15%3A00450609" target="_blank" >RIV/67985815:_____/15:00450609 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1051/0004-6361/201526564" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201526564</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/201526564" target="_blank" >10.1051/0004-6361/201526564</a>
Alternative languages
Result language
angličtina
Original language name
The January 2015 outburst of a red nova in M31
Original language description
M31N 2015-01a (or M31LRN 2015) is a red nova that erupted in January 2015 - the first event of this kind observed in M31 since 1988. Very few similar events have been confirmed as of 2015. Most of them are considered to be products of stellar mergers. Results of an extensive optical monitoring of the transient in the period January-March 2015 are presented. We present a highly accurate 70 d light curve and astrometry with a 0.05" uncertainty. The colour indices reached a minimum of 2-3 d before peak brightness and rapidly increased afterwards. The spectral type changed from F5I to F0I in 6 d before the maximum and then to K3I in the next 30 d. The luminosity of the transient was estimated to be 8.7(-2.2)(+3.3)x10(5) L-circle dot during the optical maximum. Both the photometric and the spectroscopic results confirm that the object is a red nova, similar to V838 Monocerotis.
Czech name
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Czech description
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Classification
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)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy & Astrophysics
ISSN
1432-0746
e-ISSN
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Volume of the periodical
578
Issue of the periodical within the volume
June
Country of publishing house
FR - FRANCE
Number of pages
5
Pages from-to
"L10/1"-"L10/5"
UT code for WoS article
000357502600011
EID of the result in the Scopus database
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