2001A&A...369..882A


Query : 2001A&A...369..882A

2001A&A...369..882A - Astronomy and Astrophysics, volume 369, 882-888 (2001/4-3)

Solar-type cycles of the secondary stars in cataclysmic variables.

AK T., OZKAN M.T. and MATTEI J.A.

Abstract (from CDS):

We found cyclical variations in the quiescent magnitudes and outburst intervals of 21 dwarf novae, 1 nova and 1 nova-like star produced by the solar-type cycles of the late-type secondary components. More than 70% of individual systems in this work are first studied by Fourier periodogram analysis. It seems that the mean cycle amplitudes of the quiescent magnitudes are considerably larger for SU UMa stars. Cyclical modulations of quiescent magnitudes found for the stars, which have orbital periods below the period gap, support the hypothesis that even almost fully convective secondaries may possess activity cycles. The estimated probability density functions show peaks at 9.7, 7.9 and 8.6 yrs for cataclysmic variables (CVs), single main-sequence stars (MS) and all stars (CVs+MS), respectively. Using a larger set of data, we confirm that there is no correlation of the cycle period with the rotational regime of the secondary star. It is also confirmed that cycle periods of CVs are in the range of those of single main-sequence stars. We note that the observational cycle parameters (i.e. cycle period, Pcyc, and cycle amplitude of quiescent magnitudes, Δm) do not seem in relation with any other parameter such as masses of primary and secondary stars, mean outburst interval, mean outburst duration, mean decline and rise rate of outbursts, absolute magnitudes in quiescent and outburst states etc.

Abstract Copyright:

Journal keyword(s): stars: cataclysmic variables - stars: activity

Simbad objects: 23

goto Full paper

goto View the references in ADS

Number of rows : 23
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* WW Cet CV* 00 11 24.7725920913 -11 28 43.204274910           ~ 169 0
2 V* GK Per No* 03 31 12.0096626899 +43 54 15.467450081   14.139 13.090 12.589   K1IV 879 0
3 V* TU Men CV* 04 41 40.7062108407 -76 36 45.940466299         14.057 ~ 149 0
4 V* SS Aur CV* 06 13 22.4341940496 +47 44 25.346818461   16.06 15.81     sdBe 249 0
5 V* CZ Ori CV* 06 16 43.2247028462 +15 24 11.297178349   12.81 12.81 16.17   OB- 92 0
6 V* HL CMa CV* 06 45 17.2108904787 -16 51 34.545309152   12.60 12.41     ~ 100 0
7 V* UY Pup CV* 07 46 31.2401198871 -12 57 08.996922824   13.37 13.30 13.20 15.09 K2/6+? 34 0
8 V* BV Pup CV* 07 49 05.2533774977 -23 34 00.394950823   13.10       ~ 62 0
9 V* U Gem CV* 07 55 05.2323858391 +22 00 05.045435077   15.3 14.54     DA 1062 0
10 V* Z Cha CV* 08 07 27.7421647579 -76 32 00.679589237   12.00       M5.5 594 1
11 V* Z Cam CV* 08 25 13.1988897787 +73 06 39.284432670   12.006 11.927 11.712   ~ 498 0
12 V* SW UMa CV* 08 36 42.7494852536 +53 28 37.976353343           ~ 293 0
13 V* OY Car CV* 10 06 22.0792108747 -70 14 04.582997921           ~ 556 0
14 V* V436 Cen CV* 11 14 00.0570888106 -37 40 47.764345437           ~ 143 0
15 V* V442 Cen CV* 11 24 51.9051020095 -35 54 36.726586797   11.70       ~ 48 0
16 V* TT Crt CV* 11 34 47.1766985214 -11 45 30.370184613   12.5       ~ 47 0
17 V* EX Hya CV* 12 52 24.2220533405 -29 14 56.001981146   13.51 13.49 13.55   M5-6V 660 0
18 V* EK TrA CV* 15 14 01.47 -65 05 32.1   11.90       ~ 119 0
19 V* AH Her CV* 16 44 10.0057072570 +25 15 01.944744669   12.44 12.71     K2 226 0
20 V* FQ Sco CV* 17 08 04.51 -32 42 02.2     11.22     ~ 26 0
21 V* UZ Ser CV* 18 11 24.90 -14 55 33.9           ~ 71 0
22 V* WZ Sge CV* 20 07 36.5036203067 +17 42 14.733657651   15.30 15.20     DAepv 907 0
23 V* SS Cyg CV* 21 42 42.8034554117 +43 35 09.863763484 11.07 8.2 7.70     K5V 1235 1

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2001A&A...369..882A and select 'bookmark this link' or equivalent in the popup menu


2021.07.29-18:28:44

© Université de Strasbourg/CNRS

    • Contact