2023MNRAS.525.3682V

Query : 2023MNRAS.525.3682V

2023MNRAS.525.3682V - Mon. Not. R. Astron. Soc., 525, 3682-3692 (2023/November-1)

Photometric long-term variations of dwarf novae during quiescence.

VOGT N. and VEGA-MANUBENS I.

Abstract (from CDS):

Using the Catalina Sky Survey and Gaia alert data bases, we have carried out a systematic search for long-term variability of the brightness of dwarf novae in quiescence. A small, but significant portion of them revealed variability on time-scales between 2 and 14 yr which can be fitted, in some of the targets, by linear slopes of 0.14 mag yr–1 on average and up to 0.6 mag yr–1 in extreme cases. Another group of dwarf novae showed quasi-periodic variations in their quiescent brightness, with periods of 3.7 yr on average and up to 13 yr in extreme cases, and mean amplitudes of 0.5 mag, reaching up to 1.3 mag. The observed slopes could be understood as portions of a quasi-sinusoidal variability with larger periods, not covered by our data. SU UMa stars have, on average, smaller slope values and longer periods, compared to other dwarf novae. These variations could be interpreted as caused by magnetic activity of the secondary companion star, similar to the 11-yr solar cycle, but one could consider also other origins of this phenomenon.

Abstract Copyright: © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): methods: data analysis - stars: dwarf novae - cataclysmic variables

Simbad objects: 155

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Number of rows : 155
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 CRTS J001449.5-523215 CV? 00 14 49.55 -52 32 15.4           ~ 4 0
2 CRTS J001538.3+263657 CV* 00 15 38.2394546976 +26 36 56.813748984           ~ 16 0
3 Gaia 18dgw CV? 00 42 36.86826036 +60 52 48.7724012           ~ 2 0
4 Gaia DR2 418455914873928192 Y*? 00 44 59.62150430 +55 47 51.3871386           ~ 2 0
5 ZTF18absondn CV? 01 00 57.44287670 +57 14 35.4634548           ~ 3 0
6 Gaia 19cfg CV? 01 10 37.660 +63 43 32.90           ~ 2 0
7 1RXS J013308.9+383218 CV* 01 33 08.757 +38 32 17.33           ~ 9 0
8 TCP J01375892+4951055 CV* 01 37 58.8962561760 +49 51 05.438038536           ~ 5 0
9 CRTS J014709.7+171520 CV* 01 47 09.73 +17 15 19.9           ~ 4 0
10 CRTS J022411.4+355919 CV* 02 24 11.44 +35 59 18.5           ~ 5 0
11 V* V872 Per CV* 02 46 02.3486108592 +34 55 08.167950876           ~ 12 0
12 V* QY Per CV* 03 15 36.8452390248 +42 28 14.108416932           ~ 41 0
13 CRTS CSS090922 J032603+252534 CV* 03 26 02.9649206712 +25 25 33.203246520           ~ 4 0
14 CRTS J032811.9+280631 CV* 03 28 11.83998401 +28 06 31.2888704   19.36 18.55 18.15 17.57 ~ 7 0
15 AT 2019cbz CV* 03 28 15.9309917016 +61 25 17.326952472           DC: 9 0
16 CRTS J033449.8-071048 CV* 03 34 49.8689655360 -07 10 47.840907504           ~ 20 0
17 Gaia 19ecr CV? 03 39 48.9342939537 -08 25 11.653734166           ~ 2 0
18 V* VW Hyi CV* 04 09 11.3967378648 -71 17 41.554528260   12.786 12.543 14.160   DQ 661 0
19 CRTS J041133.6-090729 CV* 04 11 33.6232021647 -09 07 29.550585128     19.4     ~ 9 0
20 EC 04468-1846 CV* 04 49 02.7014575654 -18 41 29.183902284 15.47 16.33 17.7     ~ 10 0
21 Gaia 19ecx CV? 04 54 05.0682159723 +11 42 40.922215194           ~ 2 0
22 CRTS J050659.2-165932 CV* 05 06 59.2199037489 -16 59 31.589106343           ~ 8 0
23 V* BI Ori CV* 05 23 51.7717113504 +01 00 30.622984056           ~ 44 0
24 CRTS J053042.0+141826 CV? 05 30 41.96 +14 18 26.1           ~ 4 0
25 CRTS J053541.8-113717 CV* 05 35 41.8202065731 -11 37 16.707444236           ~ 5 0
26 AT 2018fbg CV? 05 44 42.53 +33 52 53.2           ~ 1 0
27 AT 2017hye CV* 05 55 31.95 +40 21 38.6           ~ 2 0
28 V* HQ Gem CV* 06 12 04.4751287145 +25 28 32.617151531           ~ 11 0
29 V* SS Aur CV* 06 13 22.4340408984 +47 44 25.345431780   16.06 15.81     sdBe 272 0
30 ASASSN -18bz CV* 06 21 57.13 +40 42 36.2           ~ 2 0
31 ASASSN -15bv CV* 06 25 01.7458925011 -02 47 58.631204417           ~ 5 0
32 ATO J096.7863+45.5786 CV* 06 27 08.7196686734 +45 34 43.060793903           ~ 6 0
33 AT 2017gck CV? 06 30 01.68 -08 52 49.1           ~ 1 0
34 Gaia 16alp CV? 06 38 59.1279268992 -60 16 24.835372856           ~ 2 0
35 Gaia 19bwf CV? 06 42 42.9789691912 +02 20 07.083225863           ~ 2 0
36 1RXS J064725.3+491539 CV* 06 47 25.7018789592 +49 15 42.288645096           DQ 15 0
37 Gaia 16aqf CV? 06 53 10.9749867018 -71 47 14.717121692           ~ 2 0
38 AT 2016ecy CV* 07 01 10.38 -20 44 43.7           ~ 2 0
39 ASASSN -16an CV* 07 08 16.6078312071 -12 45 44.742299841           ~ 4 0
40 MASTER OT J071303.01-313456.3 ev 07 13 03.01 -31 34 56.3           ~ 2 0
41 AT 2019ovb CV? 07 42 10.57 -24 41 57.2           ~ 1 0
42 SDSS J074859.55+312512.6 CV* 07 48 59.5616498736 +31 25 12.697893552         14.69 ~ 16 0
43 AT 2019ova CV? 07 49 06.71 -31 02 09.2           ~ 1 0
44 V* U Gem CV* 07 55 05.2324414746 +22 00 05.044127985   15.3 14.54     DA 1135 0
45 ASASSN -15sp CV* 07 58 08.4612192363 -57 22 42.309853915           ~ 5 0
46 AT 2019aqe CV? 08 03 31.46 -26 19 35.2           ~ 1 0
47 V* Z Cha CV* 08 07 27.7517751528 -76 32 00.665029356           M5.5 620 1
48 ASASSN -15sm CV* 08 21 58.76 -15 37 33.2           ~ 2 0
49 AT 2018aow CV* 08 33 16.5756694634 -11 38 12.460460797           ~ 3 0
50 Gaia 19akj CV? 08 33 24.6860892781 -30 11 11.721626099           ~ 2 0
51 AT 2018hwd CV* 08 39 59.7565666036 +74 02 26.828548537           DQ: 7 0
52 V* V495 Hya CV* 08 44 00.0992860440 +02 39 19.343312748           ~ 20 0
53 Gaia 19duk CV? 08 52 09.0461882422 -52 51 46.806402343           ~ 2 0
54 V* GZ Cnc CV* 09 15 51.6769229568 +09 00 49.657853448           ~ 48 0
55 ASASSN -19gj CV? 09 19 14.8911488657 -37 08 15.296991941           ~ 2 0
56 ASASSN -17ov CV? 09 20 47.7292191799 -34 07 50.843589027           ~ 2 0
57 AT 2018edb CV? 09 45 29.02 -54 37 51.0           ~ 1 0
58 AT 2019ltl CV? 09 56 40.29 -50 36 10.9           ~ 1 0
59 V* KS UMa CV* 10 20 26.5185297792 +53 04 33.089641968   17.0       ~ 75 0
60 ASASSN -18lt CV? 10 24 51.2765915800 -29 19 59.219489297           ~ 2 0
61 CRTS J103148.0+085224 CV* 10 31 47.9862308304 +08 52 24.359870712           ~ 13 0
62 ASASSN -15jh CV* 10 33 17.4579783861 -28 29 03.194181035           ~ 3 0
63 ASASSN -17ab CV? 10 40 51.2612809541 -37 03 30.202772355           ~ 2 0
64 ASASSN -16or CV? 10 47 08.5551797374 -53 13 02.633725490           ~ 2 0
65 V* V442 Cen CV* 11 24 51.9051069168 -35 54 36.729015624   14.650 14.474 13.135   ~ 59 0
66 V* MR UMa CV* 11 31 22.3979617152 +43 22 38.474604624           ~ 47 1
67 V* QZ Vir CV* 11 38 26.8241432424 +03 22 07.110298596     15.81     ~ 269 1
68 Gaia 19emn CV? 11 39 59.9920088128 -54 17 10.921384715           ~ 2 0
69 Gaia 19cwo CV? 12 08 35.9242716933 -61 57 07.988270267           ~ 2 0
70 Gaia 18bxl WD? 12 28 28.7557502076 -48 16 43.873055190           ~ 2 0
71 AT 2019hli CV? 12 31 55.45 -49 14 45.6           ~ 1 0
72 AT 2016dsk CV* 12 44 32.6265636257 -23 57 21.229123120           ~ 5 0
73 V* EX Hya CV* 12 52 24.2222471899 -29 14 55.999766523   13.505 13.491 13.549   M5-6V 730 0
74 CRTS J130547.7-360301 CV? 13 05 47.69 -36 03 01.3           ~ 4 0
75 V* V1047 Cen No* 13 20 49.74 -62 37 50.5           ~ 42 0
76 Gaia 18bxn CV? 13 28 49.6068597314 -68 43 05.000443219           ~ 2 0
77 AT 2018fr WD? 13 46 19.4783794038 -69 49 26.852383995           ~ 2 0
78 Gaia 19bma CV? 14 03 42.7806801201 -77 41 00.843093399           ~ 2 0
79 ASASSN -18cf CV? 14 04 43.6695335891 -46 22 06.497656464           ~ 3 0
80 V* V558 Vir CV* 14 27 01.5877214400 -01 23 10.251361932   20.5 20.07 19.7   ~ 24 1
81 ASASSN -19lw CV? 14 34 10.2435778834 -52 15 59.024864498           ~ 2 0
82 Gaia 19cor CV? 14 42 41.0199942223 -47 01 37.300651849           ~ 3 0
83 ASASSN -18gn CV? 14 49 11.2801663471 -73 33 17.605202073           ~ 2 0
84 ASASSN -17im CV? 15 09 23.340 -75 34 48.10           ~ 2 0
85 CRTS J152730.7+181727 CV* 15 27 30.7072474493 +18 17 26.904571087           ~ 6 0
86 CRTS J153015.0+094946 CV* 15 30 15.0487166496 +09 49 46.260825168           ~ 18 0
87 Gaia 19bar CV? 15 37 05.4862451777 -42 19 19.856518602           ~ 2 0
88 CRTS J153832.8-151719 CV* 15 38 32.8137775063 -15 17 18.664360116           ~ 4 0
89 CRTS J154456.7-322722 CV? 15 44 56.75 -32 27 22.2           ~ 5 0
90 V* V493 Ser CV* 15 56 44.2350520968 -00 09 50.222876328           ~ 34 0
91 AT 2019oog CV? 16 03 18.73 -51 57 01.5           ~ 1 0
92 SV* HV 10518 CV* 16 07 27.4043673232 -05 05 28.219958873   15.046 14.768     ~ 4 0
93 Gaia 19bay CV? 16 09 32.4740719989 -66 36 19.473065998           ~ 2 0
94 Gaia 17bgu CV? 16 10 11.3705795802 -63 27 14.277029836           ~ 2 0
95 CRTS J161637.2-181027 CV* 16 16 37.18 -18 10 27.3           ~ 6 0
96 Gaia 18bgv CV* 16 29 54.6614609018 -74 41 50.736270374           ~ 3 0
97 AT 2018erk CV? 16 37 52.26 -54 19 42.9           ~ 1 0
98 MASTER OT J163946.76-614600.6 ev 16 39 46.76 -61 46 00.6           ~ 2 0
99 ASASSN -16co CV? 16 48 33.7037830079 -69 30 45.400544661           ~ 2 0
100 V* V1943 Oph Mi* 17 21 32.88 -18 42 57.0           ~ 4 0
101 V* RY Ser CV* 17 23 07.1837977344 -12 48 09.736673544           ~ 28 0
102 V* V660 Her CV* 17 42 09.1616799096 +23 48 29.730820608           ~ 35 0
103 RX J1748.4+5050 CV* 17 48 27.8845772136 +50 50 39.742455192           ~ 11 0
104 Gaia 17cby CV? 17 53 16.1484847282 -44 48 16.667717765           ~ 2 0
105 ZTF18aapauoa CV? 18 00 43.0792346109 +21 01 34.358928659           ~ 3 0
106 Gaia 16aoh CV? 18 19 04.7775405648 -74 41 23.619381828           ~ 3 0
107 ASASSN -15eg ? 18 21 30.30 -53 48 18.9           ~ 1 0
108 Gaia 19azx CV? 18 23 13.7986614028 -60 41 06.001859045           ~ 2 0
109 ASASSN -18mg CV? 18 27 50.1692737842 -51 35 50.144564359           ~ 2 0
110 V* LL Lyr CV* 18 35 12.8190610224 +38 20 04.346234988           ~ 31 0
111 Gaia 19bfb CV? 18 40 02.0670646370 +25 25 22.065214774           ~ 2 0
112 V* DT Oct CV* 18 40 52.4023476744 -83 43 10.001234784           ~ 38 0
113 V* AY Lyr CV* 18 44 26.6868591696 +37 59 51.945309636   18.1   14.66   ~ 122 0
114 Gaia 17ayu CV? 18 57 36.9024199890 +32 08 35.922193954           ~ 2 0
115 ASASSN -14hn CV? 19 01 42.1864517106 -39 53 05.962229288           ~ 3 0
116 ASASSN -18ne CV? 19 15 03.3188301660 -58 34 25.597013777           ~ 2 0
117 V* V344 Pav CV* 19 16 09.6826697136 -62 35 51.866427300           ~ 19 0
118 MASTER OT J191841.98+444914.5 CV* 19 18 42.0088356216 +44 49 12.694079064       19.2   D 10 0
119 AT 2018fnm CV* 19 21 25.48 +34 14 28.7           ~ 2 0
120 ZTF18aasnlwa CV? 19 22 34.0516973795 +27 32 01.241852972           ~ 3 0
121 Gaia 16akr CV? 19 25 54.8090137476 -46 19 03.333569446           ~ 3 0
122 CRTS J193511.4-531746 CV? 19 35 11.45 -53 17 45.5           ~ 4 0
123 AT 2019lft CV? 19 41 29.24 +40 11 24.2           ~ 1 0
124 ASASSN -15qr CV* 19 50 39.55 +05 56 20.3           ~ 2 0
125 AT 2019bcl CV? 19 50 54.38 +35 51 35.9           ~ 2 0
126 Gaia 18dle CV* 19 57 26.6963671878 +06 10 31.162156133           ~ 4 0
127 AT 2019aoy CV? 20 04 42.85 +27 20 23.4           ~ 1 0
128 ASASSN -15mz ? 20 08 56.20 -51 14 03.8           ~ 1 0
129 Gaia DR3 4244415427847996800 CV? 20 12 37.8358343655 +03 30 40.180935894           ~ 3 0
130 MASTER OT J202157.69+212919.4 CV* 20 21 57.6874857984 +21 29 19.597637796   20.0   20.0   ~ 5 0
131 SDSS J203226.53+570822.0 CV? 20 32 26.5348168704 +57 08 21.742013004           ~ 3 0
132 ASASSN -18ra CV* 20 44 49.66 +17 30 50.6           ~ 3 0
133 CRTS J205932.9-091616 CV* 20 59 33.00 -09 16 16.0           ~ 6 0
134 Gaia 17bgl CV? 21 02 44.5334839851 +08 09 08.252480452           ~ 2 0
135 Gaia 18buy CV? 21 03 31.5214940102 +36 40 12.746628175           ~ 2 0
136 TCP J21040470+4631129 CV* 21 04 04.6781176128 +46 31 14.463517476           DQ 26 0
137 V* V1060 Cyg CV* 21 07 42.1833285000 +37 14 08.802519432           ~ 15 0
138 CRTS J210846.4-035031 CV* 21 08 46.4530344648 -03 50 31.943401800     18     ~ 12 0
139 ASASSN -17pz CV* 21 13 33.47 -25 16 05.7           ~ 2 0
140 MASTER OT J212624.16+253827.2 CV* 21 26 24.1388963664 +25 38 27.088262952           ~ 11 0
141 MASTER OT J213054.91+390209.4 CV* 21 30 54.9634528522 +39 02 09.635703575           ~ 4 0
142 V* SS Cyg CV* 21 42 42.8034497592 +43 35 09.867842484 11.07 12.651 12.032 9.326   K5V 1324 1
143 SDSS J220321.37+144607.6 CV* 22 03 21.3569126112 +14 46 07.561427124     17.5     ~ 4 0
144 ASASSN -14dj CV? 22 05 19.490 -60 12 24.30           ~ 2 0
145 HS 2214+2845 CV* 22 16 31.1750292600 +29 00 19.821789252           M2.5e 15 0
146 V* V521 Peg CV* 22 21 44.7931808160 +18 40 08.201442360           ~ 35 0
147 Gaia 19bpa CV? 22 23 01.5895009745 +42 49 22.025706544           ~ 2 0
148 ZTF18abcnnfj CV? 22 35 21.9248178495 +33 02 43.866234048           ~ 3 0
149 SDSS J224647.77+065634.5 CV* 22 46 47.7801918480 +06 56 34.572210504           ~ 6 0
150 ASASSN -18wn CV* 22 55 51.280 -80 45 18.30           ~ 3 0
151 V* HY Psc CV* 23 03 51.6358936128 +01 06 51.155488332   17.5       ~ 29 0
152 MASTER OT J232100.42+494614.0 CV* 23 21 00.4288112112 +49 46 14.321627220   16.6   18.3   ~ 4 0
153 AT 2016duu CV* 23 23 25.79 +69 58 52.7           ~ 2 0
154 V* V455 And CV* 23 34 01.4484962496 +39 21 40.866079356   16.220 16.094 16.137   DQ 166 0
155 CRTS J233848.7+281955 CV* 23 38 48.6786155448 +28 19 54.995018880           ~ 16 0

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