2003A&A...404.1067N


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.04CEST22:45:11

2003A&A...404.1067N - Astronomy and Astrophysics, volume 404, 1067-1075 (2003/6-4)

In-the-gap SU UMa-type dwarf nova, Var73 Dra with a supercycle of about 60 days.

NOGAMI D., UEMURA M., ISHIOKA R., KATO T., TORII K., STARKEY D.R., TANABE K., VANMUNSTER T., PAVLENKO E.P., GORANSKIJ V.P., BARSUKOVA E.A., ANTONIUK O., MARTIN B., COOK L.M., MASI G. and MALLIA F.

Abstract (from CDS):

An intensive photometric-observation campaign of the recently discovered SU UMa-type dwarf nova, Var73 Dra was conducted from 2002 August to 2003 February. We caught three superoutbursts in 2002 October, December and 2003 February. The recurrence cycle of the superoutburst (supercycle) is indicated to be ∼60d, the shortest among the values known so far in SU UMa stars and close to those of ER UMa stars. The superhump periods measured during the first two superoutbursts were 0.104885(93)d, and 0.10623(16)d, respectively. A 0.10424(3)-d periodicity was detected in quiescence. The change rate of the superhump period during the second superoutburst was 1.7x10–3, which is an order of magnitude larger than the largest value ever known. Outburst activity has changed from a phase of frequent normal outbursts and infrequent superoutbursts in 2001 to a phase of infrequent normal outbursts and frequent superoutbursts in 2002. Our observations are negative to an idea that this star is an related object to ER UMa stars in terms of the duty cycle of the superoutburst and the recurrence cycle of the normal outburst. However, to trace the superhump evolution throughout a superoutburst, and from quiescence more effectively, may give a fruitful result on this matter.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - novae, cataclysmic variables - stars: dwarf novae - stars: individual: Var73 Dra

Status at CDS:  

CDS comments: Table 1 : USNO-B1.0 001545-0228537 (star 8) is a misprint for 001546-0228537.

Simbad objects: 22

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Number of rows : 22

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 V* WX Cet DN* 01 17 04.17 -17 56 23.0           ~ 163 0
2 V* SU UMa DN* 08 12 28.2694633475 +62 36 22.428029272           B2 467 0
3 V* SW UMa DN* 08 36 42.7494852536 +53 28 37.976353343           ~ 291 0
4 V* EG Cnc DN* 08 43 03.9868348725 +27 51 49.696061650   11.9       DAe 157 0
5 V* DI UMa DN* 09 12 16.1938983103 +50 53 53.959796825           ~ 80 0
6 V* V485 Cen DN* 12 57 23.1807451670 -33 12 05.745406224   15.8   15.9   ~ 97 0
7 V* HV Vir DN* 13 21 03.1665682309 +01 53 29.071215583           DA 146 0
8 V* V877 Ara DN* 17 16 52.7711725151 -65 32 47.484884396           ~ 18 0
9 V* BF Ara DN* 17 38 21.3277669690 -47 10 41.550154856           ~ 45 0
10 V* DM Lyr DN* 18 58 44.43 +30 15 33.0           ~ 33 0
11 V* V1113 Cyg DN* 19 22 41.9764656306 +52 43 59.238197043           ~ 31 0
12 V* V1028 Cyg DN* 20 00 56.59 +56 56 37.2           ~ 51 0
13 TYC 4241-865-1 * 20 22 29.5189672596 +64 36 02.404139374   11.41 10.64     ~ 1 0
14 TYC 4241-1806-1 * 20 22 39.1959195342 +64 34 38.266757592   11.88 11.59     ~ 1 0
15 USNO-B1.0 1545-00231804 * 20 23 08.3126699407 +64 31 18.114971483   13.37       ~ 1 0
16 USNO-B1.0 1545-00231894 * 20 23 29.4440814400 +64 35 09.523364739   17.30       ~ 1 0
17 USNO-B1.0 1545-00231905 * 20 23 32.5770523624 +64 35 29.097953906   16.72       ~ 1 0
18 USNO-B1.0 1546-00228537 * 20 23 35.3342611108 +64 36 56.287668995   16.51       ~ 1 0
19 V* MN Dra DN* 20 23 38.1857801048 +64 36 26.584302578           ~ 39 1
20 USNO-B1.0 1546-00228620 * 20 24 00.4498619676 +64 37 05.795925785   13.53       ~ 1 0
21 V* V503 Cyg DN* 20 27 17.3992310371 +43 41 22.503129197     15.83     ~ 128 0
22 V* KK Tel CV? 20 28 38.5092290989 -52 18 45.184870997   19.0   19.1   ~ 44 0

    Equat.    Gal    SGal    Ecl

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2020.04.04-22:45:11

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