2015MNRAS.452.4195C

Query : 2015MNRAS.452.4195C

2015MNRAS.452.4195C - Mon. Not. R. Astron. Soc., 452, 4195-4202 (2015/October-1)

Early optical follow-up of the nearby active star DG CVn during its 2014 superflare.

CABALLERO-GARCIA M.D., SIMON V., JELINEK M., CASTRO-TIRADO A.J., CWIEK A., CLARET A., OPIELA R., ZARNECKI A.F., GOROSABEL J., OATES S.R., CUNNIFFE R., JEONG S., HUDEC R., SOKOLOV V.V., MAKAROV D.I., TELLO J.C., LARA-GIL O., KUBANEK P., GUZIY S., BAI J., FAN Y., WANG C. and PARK I.H.

Abstract (from CDS):

DG Canum Venaticorum (DG CVn) is a binary system in which one of the components is an M-type dwarf ultrafast rotator, only three of which are known in the solar neighbourhood. Observations of DG CVn by the Swift satellite and several ground-based observatories during its superflare event on 2014 allowed us to perform a complete hard X-ray-optical follow-up of a superflare from the red-dwarf star. The observations support the fact that the superflare can be explained by the presence of (a) large active region(s) on the surface of the star. Such activity is similar to the most extreme solar flaring events. This points towards a plausible extrapolation between the behaviour from the most active red-dwarf stars and the processes occurring in the Sun.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): line: formation - stars: activity - stars: flare - gamma-rays: stars

Simbad objects: 9

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Number of rows : 9
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* CF Tuc RS* 00 53 07.7675726832 -74 39 05.608753668   8.31 7.90   6.730 G2/5V+F0 241 0
2 G 272-61B PM* 01 39 01.6377185550 -17 57 01.001240728           M6V 892 0
3 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
4 NAME AB Dor Moving Group MGr 06 38 53.4 -42 50 04           ~ 540 0
5 V* DG CVn ** 13 31 46.6246175093 +29 16 36.681048898   12.90 12.02 10.77 9.15 M4Ve 135 0
6 NAME Proxima Centauri PM* 14 29 42.9461331854 -62 40 46.164680672 14.21 12.95 11.13 9.45 7.41 M5.5Ve 1483 0
7 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 894 0
8 V* EV Lac PM* 22 46 49.7312610268 +44 20 02.374381562   11.85 10.26 9.89   M4.0Ve 993 2
9 V* SZ Psc RS* 23 13 23.7784875720 +02 40 31.602660924   8.19 7.44   6.390 G5Vp 333 1

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