2015A&A...578L..10K


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.19CEST18:40:20

2015A&A...578L..10K - Astronomy and Astrophysics, volume 578, L10-10 (2015/6-1)

The January 2015 outburst of a red nova in M 31.

KURTENKOV A.A., PESSEV P., TOMOV T., BARSUKOVA E.A., FABRIKA S., VIDA K., HORNOCH K., OVCHAROV E.P., GORANSKIJ V.P., VALEEV A.F., MOLNAR L., SARNECZKY K., KOSTOV A., NEDIALKOV P., VALENTI S., GEIER S., WIERSEMA K., HENZE M., SHAFTER A.W., MUNOZ DIMITROVA R.V., POPOV V.N. and STRITZINGER M.

Abstract (from CDS):

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.
Result. of an extensive optical monitoring of the transient in the period January-March 2015 are presented. Eight optical telescopes were used for imaging. Spectra were obtained on the Large Altazimuth Telescope (BTA), the Gran Telecsopio Canarias (GTC) and the Rozhen 2 m telescope. 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+3.3–2.2x105L during the optical maximum. Both the photometric and the spectroscopic results confirm that the object is a red nova, similar to V838 Monocerotis.

Abstract Copyright:

Journal keyword(s): novae, cataclysmic variables

CDS comments: Table 2 reference stars not identified.

Simbad objects: 14

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Number of rows : 14

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 M31N 2015-01a No* 00 42 07.99 +40 55 01.1           ~ 42 0
2 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 11049 1
3 NAME M31 RV No* 00 43 02.433 +41 12 56.17           M0 102 0
4 HZ 2 WD* 04 12 43.5549840231 +11 51 48.973557049 12.903 13.787 13.877 13.984 14.094 DA2.3 91 0
5 BD+52 913 WD* 05 05 30.6182785658 +52 49 51.920797126 10.25 11.44 11.69 11.93 12.108 DA.8 991 0
6 HD 289002 * 06 45 13.3726265810 +02 08 14.688016523 10.06 10.62 10.44     B1 229 0
7 * 41 Gem V* 07 00 15.8232357229 +16 04 44.401770290 9.09 7.32 5.69 4.44 3.59 K3-Ib 92 0
8 V* V838 Mon CV* 07 04 04.8222936785 -03 50 50.637499515   15.5   15.18 14.51 M10+B3V 375 0
9 NAME M85 OT2006-1 No* 12 25 23.82 +18 10 56.2     19.30     ~ 57 1
10 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 2575 2
11 * sig Oph V* 17 26 30.8805999537 +04 08 25.287576783 7.39 5.82 4.31 3.22 2.46 K2II 166 0
12 V* V1309 Sco CV* 17 57 32.9383021931 -30 43 09.967391199   16.9   14.8   ~ 181 0
13 V* V4332 Sgr CV* 18 50 36.6959119600 -21 23 28.927014456         14.37 K8/M0e 144 0
14 V* CK Vul CV* 19 47 37.9563868576 +27 18 41.788878128           ~ 109 0

    Equat.    Gal    SGal    Ecl

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2020.10.19-18:40:20

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