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The January 2015 outburst of a red nova in M31
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SYSNO ASEP 0450609 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The January 2015 outburst of a red nova in M31 Tvůrce(i) Kurtenkov, A.A. (BG)
Pessev, P. (ES)
Tomov, T. (PL)
Barsukova, E.A. (RU)
Fabrika, S. (RU)
Vida, K. (HU)
Hornoch, Kamil (ASU-R) ORCID
Ovcharov, E.P. (BG)
Goranskij, V.P. (RU)
Valeev, A.F. (RU)
Molnár, L. (HU)
Sárneczky, K. (HU)
Kostov, A. (BG)
Nedialkov, P. (BG)
Valenti, S. (US)
Geier, S. (ES)
Wiersema, K. (GB)
Henze, M. (DE)
Shafter, A.W. (US)
Dimitrova, R.V.M. (RU)
Popov, V.N. (RU)
Stritzinger, M. (DK)Zdroj.dok. Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361
Roč. 578, June (2015), L10/1-L10/5Poč.str. 5 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. FR - Francie Klíč. slova novae ; cataclysmic variables Vědní obor RIV BN - Astronomie a nebeská mechanika, astrofyzika Obor OECD Astronomy (including astrophysics,space science) Institucionální podpora ASU-R - RVO:67985815 UT WOS 000357502600011 DOI 10.1051/0004-6361/201526564 Anotace 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. Pracoviště Astronomický ústav Kontakt Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Rok sběru 2016
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