2005A&A...432..261U

Query : 2005A&A...432..261U

2005A&A...432..261U - Astronomy and Astrophysics, volume 432, 261-271 (2005/3-2)

TV Corvi revisited: Precursor and superhump period derivative linked to the disk instability model.

UEMURA M., MENNICKENT R.E., ISHIOKA R., IMADA A., KATO T., NOGAMI D., STUBBINGS R., KIYOTA S., NELSON P., TANABE K., HEATHCOTE B. and BOLT G.

Abstract (from CDS):

We report optical photometric observations of four superoutbursts of the short-period dwarf nova TV Crv. This object experiences two types of superoutbursts; one with a precursor and the other without. The superhump period and period excess of TV Crv are accurately determined to be 0.065028±0.000008 d and 0.0342±0.0021, respectively. This large excess implies a relatively large mass ratio of the binary components (M2/M1), though it has a short orbital period. The two types of superoutbursts can be explained by the thermal-tidal instability model for systems having large mass ratios. Our observations reveal that superhump period derivatives are variable in distinct superoutbursts. The variation is apparently related to the presence or absence of a precursor. We propose that the superhump period derivative depends on the maximum disk radius during outbursts. We investigate the relationship of the type of superoutbursts and the superhump period derivative for known sources. In the case of superoutbursts without a precursor, superhump period derivatives tend to be larger than those in precursor-main type superoutbursts, which is consistent with our scenario.

Abstract Copyright: ∼

Journal keyword(s): accretion, accretion disks - binaries: close - novae, cataclysmic variables - stars: dwarf novae - stars: individual: TV Crv

Simbad objects: 47

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Number of rows : 47
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 V* WX Cet CV* 01 17 04.1794193856 -17 56 22.414606224           ~ 169 0
2 V* UV Per CV* 02 10 08.2720508904 +57 11 20.863265892           ~ 114 0
3 V* VW Hyi CV* 04 09 11.3967378648 -71 17 41.554528260   12.786 12.543 14.160   ?+L0:e 646 0
4 V* XZ Eri CV* 04 11 25.7623081800 -15 23 23.764734528           ~ 55 0
5 V* TU Men CV* 04 41 40.7061732720 -76 36 45.942303384         14.057 ~ 154 0
6 V* V1159 Ori CV* 05 28 59.5676204544 -03 33 52.282939068   14.321 14.203 15.317   ~ 144 0
7 V* Z Cha CV* 08 07 27.7517751528 -76 32 00.665029356           M5.5 605 1
8 V* YZ Cnc CV* 08 10 56.6511822192 +28 08 33.260657100     15.24     ~ 247 0
9 V* SU UMa CV* 08 12 28.2695986944 +62 36 22.427676396           B2 496 0
10 V* CC Cnc CV* 08 36 19.1533707432 +21 21 05.426956908           ~ 56 0
11 V* SW UMa CV* 08 36 42.7492998204 +53 28 37.976599017           ~ 307 0
12 V* EG Cnc CV* 08 43 03.9863206560 +27 51 49.693595508           DAe 180 0
13 V* CT Hya CV* 08 51 07.3931442504 +03 08 34.362546720           ~ 46 0
14 V* OY Car CV* 10 06 22.0793274312 -70 14 04.584660540           ~ 569 0
15 V* KS UMa CV* 10 20 26.5185297792 +53 04 33.089641968   17.0       ~ 68 0
16 V* SX LMi CV* 10 54 30.4187071632 +30 06 10.358155512   16.9   15.6   ~ 75 0
17 V* CY UMa CV* 10 56 56.9964835104 +49 41 18.201049512   17.0       ~ 104 1
18 V* V436 Cen CV* 11 14 00.0568720872 -37 40 47.763655572           ~ 145 0
19 V* KV UMa HXB 11 18 10.7930420496 +48 02 12.314730120     12.25     K5V-M1V 822 0
20 V* RZ Leo CV* 11 37 22.2524330304 +01 48 58.617459936     19.6     DA+dM2 162 0
21 V* QZ Vir CV* 11 38 26.8241432424 +03 22 07.110298596     15.81     ~ 255 1
22 UCAC2 24840985 * 12 20 21.9011112840 -18 27 40.664288124           ~ 1 0
23 V* TV Crv CV* 12 20 24.1673170512 -18 27 02.150567388           ~ 57 0
24 UCAC2 24840990 PM* 12 20 27.1548646128 -18 26 42.289926792           ~ 1 0
25 V* AL Com CV* 12 32 25.7951754648 +14 20 42.292188276     16.2     ~ 245 0
26 V* GO Com CV* 12 56 37.0931472264 +26 36 43.236800316           ~ 79 0
27 V* V485 Cen CV* 12 57 23.1807645432 -33 12 05.742562932           ~ 106 0
28 V* HV Vir CV* 13 21 03.1661521320 +01 53 29.075499492           DA 155 0
29 V* HS Vir CV* 13 43 38.4377401320 -08 14 03.882750324           ~ 59 0
30 V* TT Boo CV* 14 57 44.7548342472 +40 43 40.691473248           ~ 74 0
31 V* QW Ser CV* 15 26 13.9668843408 +08 18 02.490457464           DA:H: 44 0
32 V* VW CrB CV* 16 00 03.6990090672 +33 11 14.227941264           ~ 35 0
33 V* V877 Ara CV* 17 16 53.9397411792 -65 32 51.656391456           ~ 20 0
34 V* BF Ara CV* 17 38 21.3279286968 -47 10 41.551884804           ~ 46 0
35 V* DT Oct CV* 18 40 52.4023476744 -83 43 10.001234784           ~ 34 0
36 V* V344 Lyr CV* 18 44 39.1748179896 +43 22 28.051269960           sdB 104 0
37 V* DM Lyr CV* 18 58 44.4381051744 +30 15 33.389060383           ~ 34 0
38 V* V725 Aql CV* 19 56 45.06 +10 49 32.3           ~ 43 0
39 V* V1028 Cyg CV* 20 00 56.4596100362 +56 56 37.060154519           ~ 53 0
40 V* RZ Sge CV* 20 03 18.47616 +17 02 51.9432   17.6   17.2   ~ 89 0
41 V* WZ Sge CV* 20 07 36.5037622512 +17 42 14.733254952   15.30 15.20     DAepv 946 0
42 V* MN Dra CV* 20 23 38.1862508040 +64 36 26.592618240           ~ 43 1
43 V* KK Tel CV* 20 28 38.5099147224 -52 18 45.184064220   19.0   19.1   ~ 45 0
44 V* VY Aqr CV* 21 12 09.2515505688 -08 49 36.779664432           ~ 222 0
45 V* EF Peg CV* 21 15 04.1043202032 +14 03 49.389525792           ~ 76 0
46 V* V1251 Cyg CV* 21 40 54.3746778270 +48 39 43.050172674           ~ 44 0
47 V* EI Psc CV* 23 29 54.2146447848 +06 28 11.596023228   16.86 16.22     ~ 129 0

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