2024ApJ...977..153B

Query : 2024ApJ...977..153B

2024ApJ...977..153B - Astrophys. J., 977, 153 (2024/December-3)

The AH Pictoris Syndrome: Continuous Trains of Stunted Outbursts in Novalike Variables.

BRUCH A.

Abstract (from CDS):

Novalike variables are a subgroup of cataclysmic variables (CVs) that-unlike dwarf novae-do not exhibit strong brightenings in their long-term light curves. Variations over timescales of weeks, months, or years are mostly restricted to irregular low-amplitude modulations. However, some of them occasionally suffer from so-called stunted outbursts, that is, small-scale brightenings of less than a magnitude lasting for a couple of days to weeks. There is no consensus about the physical mechanisms behind these outbursts. Here I discuss the common properties of a group of novalike variables (which I call AH Pictoris (AH Pic) stars after its most prominent member) that exhibit a continuous train of successive stunted outbursts over their entire observational history, or at least for several years. The outburst amplitudes are stable in a given system, always ranging between 0.5 and 1 mag in the visual band. The outburst intervals, at an overall range between 12 and 30 days, and the outburst profiles can gradually evolve, but no sudden changes are observed. On shorter timescales the orbital waveforms are not only surprisingly similar, but also evolve in the same way over the outburst cycle. All AH Pic stars have absolute visual magnitudes in the overlap region between the absolute magnitudes of all novalike variables and of quiescent dwarf novae above the CV period gap. So far, I identified seven novalike variables with the consistent photometric behavior that may be termed the AH Pic syndrome. Several more systems may be related objects. The relationship of the AH Pic stars to the anomalous Z Cam stars is discussed.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Close binary stars - Cataclysmic variable stars - Nova-like variable stars

Simbad objects: 123

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Number of rows : 123
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* WW Cet CV* 00 11 24.7726635744 -11 28 43.204518696           ~ 185 0
2 V* V513 Cas CV* 00 18 14.9151594912 +66 18 13.656069684   16.7       ~ 34 0
3 2MASS J00353571+4623524 CV* 00 35 35.7122460408 +46 23 52.411750836     16.86   15.49 ~ 9 0
4 V* IW And CV* 01 01 08.9070026424 +43 23 25.791345060     15.0 14.52   sdOB 56 0
5 V* RX And CV* 01 04 35.5379487744 +41 17 57.784196472   13.713 13.429 11.788   ~ 322 0
6 V* TW Tri CV* 01 36 37.0048275864 +32 00 40.027198608           M1:e 40 0
7 V* KT Per CV* 01 37 08.7946635024 +50 57 20.398380408   13.999 13.819 12.290   M3.5e 131 0
8 V* AR And CV* 01 45 03.2715491016 +37 56 33.237881916   15.929 15.671     ~ 92 0
9 V* BO Cet CV* 02 06 39.2729397216 -02 03 42.590510064   14.447 14.341 14.478   ~ 35 0
10 V* TZ Per CV* 02 13 50.9628827706 +58 22 52.311997695   13.774 13.473 14.202   ~ 103 0
11 V* LX And pA* 02 19 44.0897178336 +40 27 22.335084504           ~ 23 0
12 HS 0218+3229 CV* 02 21 33.4824194472 +32 43 23.886726456           ?+K5e 28 0
13 V* RW Tri CV* 02 25 36.1556820000 +28 05 50.891220600   13.50 12.50     M0V 324 0
14 V* AM Cas CV* 02 26 23.3509014836 +71 18 31.618139040   14.925 14.745 13.824   ~ 36 0
15 1RXS J022917.1-395851 CV* 02 29 16.9431648984 -39 59 01.649985936   13.61 13.55 13.48 15.67 ~ 9 0
16 HS 0229+8016 CV* 02 35 58.2097250160 +80 29 44.285975556   13.9 13.9     ~ 21 0
17 V* GK Per No* 03 31 12.0098863320 +43 54 15.469951212   14.139 13.090 12.589   K1IV 986 0
18 V* AF Cam CV* 03 32 15.4983960264 +58 47 22.148326104     13.40     ~ 54 0
19 V* LT Eri CV* 04 07 14.7818653656 -06 44 25.166660172           ~ 31 0
20 V* FO Per CV* 04 08 34.9797162435 +51 14 48.142074010   14.18 14.03     sdB 49 0
21 V* AH Eri CV* 04 22 38.1232676064 -13 21 30.442001760           ~ 64 0
22 V* IM Eri CV* 04 24 41.1074284200 -20 07 11.759455164 11.65 11.88 11.93     ~ 38 0
23 V* BF Eri CV* 04 39 29.9447621952 -04 35 58.869385008   15.07 14.58 14.71   D+K3 51 0
24 V* FY Per CV* 04 41 56.6371042152 +50 42 36.032846544   12.546 12.245 12.634   ~ 44 0
25 EC 04468-1846 CV* 04 49 02.7014575654 -18 41 29.183902284 15.47 16.33 17.7     ~ 10 0
26 CRTS J051654.1+033252 EB* 05 16 54.0872794296 +03 32 52.443868992   15.18 14.70 14.76   ~ 10 0
27 V* BI Ori CV* 05 23 51.7717113504 +01 00 30.622984056           ~ 44 0
28 V* V2738 Ori Or* 05 39 05.9764991544 -02 07 31.307203164         16.536 ~ 5 0
29 CRTS J054558.3+022106 CV* 05 45 58.2642309072 +02 21 06.407887212   19.22 18.75 17.92 17.04 ~ 22 0
30 V* CN Ori CV* 05 52 07.7842206216 -05 25 00.543695772           ~ 184 0
31 V* AH Pic CV* 05 57 12.5506871640 -59 35 25.932537852 13.57 14.29 14.21 14.57 14.19 ~ 24 0
32 V* SS Aur CV* 06 13 22.4340408984 +47 44 25.345431780   16.06 15.81     sdBe 272 0
33 V* CZ Ori CV* 06 16 43.2247568736 +15 24 11.297210616   12.81 12.81 16.17   OB- 108 0
34 V* CW Mon CV* 06 36 54.5810314968 +00 02 17.285344080     11.90     ~ 75 0
35 V* HL CMa CV* 06 45 17.2108297512 -16 51 34.544944080   12.60 12.41     ~ 111 0
36 CRTS J064729.3+495027 CV* 06 47 29.3046752448 +49 50 26.957056920   17.8 16.84 16.116 15.62 ~ 11 0
37 ATO J103.1549+24.6061 CV* 06 52 37.1848315944 +24 36 22.255114860           DA 10 0
38 1RXS J071404.0+700413 CV* 07 14 04.6544846424 +70 04 18.400751472   11.86 11.83 11.71   ~ 21 0
39 V* GI Mon No* 07 26 47.1066965424 -06 40 29.708015988           ~ 62 0
40 V* SV CMi CV* 07 31 08.4042714600 +05 58 48.370881792           ~ 48 0
41 V* HO Pup CV* 07 33 54.1763669904 -15 45 38.266272144           ~ 11 0
42 V* BV Pup CV* 07 49 05.2533624216 -23 34 00.396724440           ~ 68 0
43 V* BX Pup CV* 07 54 15.5733669984 -24 19 36.404794884           ~ 48 0
44 V* U Gem CV* 07 55 05.2324414746 +22 00 05.044127985   15.3 14.54     DA 1135 0
45 V* SU UMa CV* 08 12 28.2695986944 +62 36 22.427676396           B2 516 0
46 V* Z Cam CV* 08 25 13.1986690656 +73 06 39.284964108   12.006 11.927 11.712   ~ 554 0
47 V* AT Cnc CV* 08 28 36.9270732360 +25 20 03.045311628   14.798 14.583 13.690   DAe: 129 0
48 V* V495 Hya CV* 08 44 00.0992860440 +02 39 19.343312748           ~ 20 0
49 V* AC Cnc CV* 08 44 27.1121665272 +12 52 31.995783264   13.80 14.15     K1-3V 154 0
50 US 2109 CV* 09 00 16.5560785920 +43 01 18.205295304   18.8       M2 20 0
51 V* SY Cnc CV* 09 01 03.3195626400 +17 53 56.030744400   12.757 12.498 12.078   ?+M0-V 166 0
52 CRTS J090210.2-113032 CV* 09 02 10.2500462808 -11 30 31.706422596     17.5   16.499 ~ 11 0
53 V* GY Cnc CV* 09 09 50.5407550968 +18 49 47.429496300           ~ 87 0
54 V* HM Leo CV* 09 38 36.9804137328 +07 14 55.122280584           ?+M3V 30 0
55 RX J0944.5+0357 CV* 09 44 31.6813494432 +03 58 05.300563116   17.525 17.019 15.574   M2V 42 0
56 V* X Leo CV* 09 51 01.4657296584 +11 52 31.244512908           ~ 138 0
57 V* RU LMi CV* 10 02 07.4601417984 +33 51 00.229580784           ~ 32 0
58 V* CH UMa CV* 10 07 00.7217843640 +67 32 47.506618176   15.535 14.141 14.820   K5.5e 114 0
59 V* SW Sex CV* 10 15 09.3769935988 -03 08 32.850732738           ~ 223 0
60 V* ST Cha CV* 10 47 15.6121948464 -79 28 06.861107928   13.90 12.80 14.31 13.99 ~ 30 0
61 V* IU Leo CV* 10 57 56.2934591904 +09 23 14.882026920   16.309 15.588 15.373   ~ 24 0
62 V* V442 Cen CV* 11 24 51.9051069168 -35 54 36.729015624   14.650 14.474 13.135   ~ 59 0
63 V* TT Crt CV* 11 34 47.1765755496 -11 45 30.370189860   16.598 16.029 15.945   ~ 55 0
64 V* DO Dra CV* 11 43 38.4921265896 +71 41 20.559036192       13.747   DQ 233 1
65 V* TW Vir CV* 11 45 21.1711886016 -04 26 05.777690964   17.38   15.03   M2 151 0
66 V* MU Cen CV* 12 12 53.8782227400 -44 28 16.025209824   14.534 14.059 14.752   ~ 46 0
67 V* BV Cen CV* 13 31 19.5105743208 -54 58 33.657394152     13.151 12.746 12.226 G5-8IV/V 196 0
68 V* GY Hya CV* 14 30 30.4713679704 -25 52 37.987029660           K4 23 0
69 V* ES Dra CV* 15 25 31.8170509152 +62 00 59.940328860   15.44       ~ 31 0
70 V* X Ser No* 16 19 17.6857680120 -02 29 29.533236000           ~ 74 0
71 V* AH Her CV* 16 44 10.0057431264 +25 15 01.942541352   12.44 12.71     K7V 249 0
72 V* V841 Oph No* 16 59 30.3744528816 -12 53 27.137707116   14.068 13.606 13.491   ~ 138 0
73 V* RY Ser CV* 17 23 07.1837977344 -12 48 09.736673544           ~ 28 0
74 2MASS J17271078+6145278 HS? 17 27 10.7986061904 +61 45 27.783361440     15.1     B2 12 0
75 V* AT Ara CV* 17 30 33.8219416224 -46 05 58.773466356   15.156 14.045 14.719   K2+ 42 0
76 V* EX Dra No* 18 04 14.2485669582 +67 54 12.273781393   14.775 14.479 14.490   ~ 135 0
77 V* V426 Oph CV* 18 07 51.6919772928 +05 51 47.804055084           ~ 182 0
78 V* UZ Ser CV* 18 11 24.8662110657 -14 55 34.506663591           ~ 79 0
79 RX J1831.7+6511 CV* 18 31 44.5384023072 +65 11 30.660100728           sd+F/K 19 0
80 V* LL Lyr CV* 18 35 12.8190610224 +38 20 04.346234988           ~ 31 0
81 V* BD Pav CV* 18 43 11.9137504416 -57 30 44.865618300           ?+K 72 0
82 V* CY Lyr CV* 18 52 41.3790647256 +26 45 31.443001704     13.20     ~ 63 0
83 V* HR Lyr No* 18 53 25.0563891480 +29 13 37.666012692     15.4     ~ 74 0
84 ATO J284.0336+45.6277 CV* 18 56 08.0688168336 +45 37 40.144446012           ~ 20 0
85 HS 1857+7127 CV* 18 57 20.3720889336 +71 31 18.849699480           ~ 10 1
86 V* CG Dra CV* 19 07 32.7644933712 +52 58 28.406029476           ~ 21 0
87 V* V363 Lyr CV* 19 08 51.5882223744 +43 00 31.276460376           ~ 23 0
88 V* V584 Lyr CV* 19 10 59.4203339907 +28 56 38.665684297           ~ 14 1
89 V* FO Aql CV* 19 16 38.1695601932 +00 07 37.018822819       15.045   ~ 32 0
90 V* V729 Sgr CV* 19 16 49.0993411728 -26 14 33.707156532           ~ 27 0
91 V* V523 Lyr CV* 19 21 07.3950071424 +37 47 56.271903940 17.70         ~ 36 0
92 V* V1116 Cyg RR* 19 24 03.2769881112 +51 39 52.674532632           ~ 13 0
93 V* V792 Cyg CV* 19 31 00.9858858888 +33 47 03.846837156           ~ 22 0
94 TYC 3556-325-1 CV* 19 31 29.1493336416 +45 59 06.100215324   12.46 12.68     DA 41 0
95 V* V795 Cyg CV* 19 34 34.0869911328 +31 32 11.970747348           ~ 16 0
96 V* EM Cyg CV* 19 38 40.1068970904 +30 30 28.332591012     11.90     ~ 270 0
97 V* FY Vul CV* 19 41 39.9333406608 +21 45 58.355755416     13.75     ~ 30 0
98 V* V811 Cyg CV* 19 48 23.3015936040 +36 26 23.250132240       14.037   ~ 24 0
99 V* AB Dra CV* 19 49 06.5315089272 +77 44 23.339250276   15.209 14.928 14.097   ~ 124 0
100 V* V542 Cyg CV* 19 49 10.4799126456 +58 31 59.337367140           ~ 18 0
101 V* PQ Aql CV* 19 53 06.6679873776 +12 59 00.746538756           ~ 11 0
102 V* UU Aql CV* 19 57 18.7656631920 -09 19 21.064632708           K7-M0V 96 0
103 V* GS Pav CV* 20 08 07.6210700448 -69 48 58.759918560 16.19 16.68 16.56     F5+sdB 30 0
104 V* V1101 Aql CV* 20 13 04.0124289240 +15 35 46.113502848           ~ 25 0
105 V* V794 Aql CV* 20 17 33.9158772576 -03 39 50.960495196           ~ 105 0
106 V* CM Del CV* 20 24 56.9280034920 +17 17 54.278576160       13.693   ~ 76 0
107 V* EZ Del CV* 20 25 22.8997111443 +15 45 57.298052370           ~ 19 0
108 V* V507 Cyg CV* 20 31 04.5301438488 +47 22 00.319146636           ~ 11 0
109 V* V516 Cyg CV* 20 47 09.7892680488 +41 55 26.482298232     14.20     ~ 33 0
110 Lan 386 CV* 21 08 33.9690140068 +39 05 35.239208092   15.8       ~ 15 0
111 CRTS J210846.4-035031 CV* 21 08 46.4530344648 -03 50 31.943401800     18     ~ 12 0
112 V* VZ Aqr CV* 21 30 24.6231562320 -02 59 17.615765040           ~ 48 0
113 V* UU Aqr CV* 22 09 05.7613016472 -03 46 17.688853416   13.998 13.919 13.735   ~ 153 0
114 V* RU Peg CV* 22 14 02.5505986656 +12 42 11.278107972     12     sdBe+G8IV:n 322 0
115 V* CP Lac No* 22 15 41.1032963832 +55 37 01.322162256           ~ 142 1
116 HS 2214+2845 CV* 22 16 31.1750292600 +29 00 19.821789252           M2.5e 15 0
117 V* DI Lac No* 22 35 48.4952851704 +52 42 59.641265592   14.89 14.51 14.48   ~ 126 0
118 V* IP Peg CV* 23 23 08.5362249504 +18 24 59.206884012           M2 395 0
119 HS 2325+8205 CV* 23 26 50.2863661739 +82 22 11.273792773   15.57 14.58 15.25   ~ 17 1
120 GD 1662 CV* 23 29 00.4713595416 -29 46 45.980660100   13.054 12.980 13.099   OBe 191 0
121 V* DX And CV* 23 29 46.6838648136 +43 45 04.034136924           ~ 106 0
122 V* HX Peg CV* 23 40 23.6981168832 +12 37 41.711624724   14.43 14.29 15.87   DAs 61 0
123 V* BC Cas CV* 23 51 17.4224307408 +60 18 10.153528776           ~ 32 0

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