2023AJ....165..148H

Query : 2023AJ....165..148H

2023AJ....165..148H - Astron. J., 165, 148 (2023/April-0)

Spectroscopically Identified Cataclysmic Variables from the LAMOST Survey. II. Period Estimates.

HOU W., LUO A.-L., DONG Y.-Q., CHEN X.-L. and BAI Z.-R.

Abstract (from CDS):

We examine a sample of 340 cataclysmic variables (CVs) from the latest data release of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) survey, along with 18 objects that are newly classified as CVs. In this paper, we focus on investigating the photometric behaviors of these CVs using data from time-domain surveys. The orbital periods of three new and five previously known objects are determined from the long-term light curves displaying eclipses or ellipsoidal variations, and/or time-resolved spectra from LAMOST. For another 16 CVs with measured periods, it is more reliable to obtain consistent periods using light curves from different surveys, as the periods derived from single-site data are still questionable. Follow-up observations are needed to confirm whether the periods have physical meanings or are orbital-related. In our sample, we find that most of the objects have longer periods above the 2 ∼ 3 hr gap. Besides period estimates, we also carry out a separate detailed analysis of some valuable CVs, in terms of spectral characteristics and subtype determination. Finally, we discuss the observational properties of this sample, including the distributions of orbital periods, absolute magnitudes, and the statistical properties of each subclass of CVs. In addition, we pick out six non-CV systems, including five illumination-effect binaries, as well as one hot subdwarf, that we came across when searching for CVs, and we investigate their properties based on the spectra and photometric data.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Cataclysmic variable stars - Spectroscopy - Photometry - Period determination

VizieR on-line data: <Available at CDS (J/AJ/165/148): table1.dat>

Simbad objects: 220

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Number of rows : 220
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 ASASSN -13cx CV* 00 02 22.3656772296 +42 42 13.485599172           DQ: 11 0
2 CRTS J001538.3+263657 CV* 00 15 38.2394546976 +26 36 56.813748984           ~ 16 0
3 V* V479 And CV* 00 18 56.9328829992 +34 54 44.233790724           ~ 22 0
4 FBS 0019+348 CV* 00 21 48.4448389416 +35 04 51.212618076           DA 25 0
5 ATO J005.4850+37.9437 RR* 00 21 56.3843698104 +37 56 37.410646704           ~ 7 0
6 ATO J005.9853+42.7854 CV* 00 23 56.4668272200 +42 47 07.796739228           DA 12 0
7 V* PX And CV* 00 30 05.8083597744 +26 17 26.437695936   15.38 14.88 14.69   ~ 124 0
8 PB 6108 CV* 00 42 13.0349466491 +07 31 37.853528046   18       ~ 6 0
9 SDSS J005347.32+405548.5 CV* 00 53 47.3325775392 +40 55 48.532702296           ~ 7 0
10 V* V515 And CV* 00 55 19.8532324488 +46 12 56.987432856           ~ 59 0
11 V* IW And CV* 01 01 08.9070026424 +43 23 25.791345060     15.0 14.52   sdOB 56 0
12 ATO J016.9284+48.7552 CV* 01 07 42.8323476264 +48 45 18.814549032   15.489 15.280 15.270   ~ 17 0
13 V* HT Cas CV* 01 10 13.1213394144 +60 04 35.489642700     14.10     M5.5e 401 0
14 2MASS J01275053+3808120 CV* 01 27 50.5831657128 +38 08 11.944077072           ~ 12 0
15 V* TT Tri CV* 01 31 59.8601500776 +29 49 22.060466364           ~ 37 0
16 1RXS J013308.9+383218 CV* 01 33 08.757 +38 32 17.33           ~ 9 0
17 V* TW Tri CV* 01 36 37.0048275864 +32 00 40.027198608           M1:e 40 0
18 V* AY Psc CV* 01 36 55.4595948432 +07 16 29.272748916   16.43 16.28 15.79   ~ 61 0
19 HS 0139+0559 CV* 01 41 39.9217828176 +06 14 37.494706740   14.9 15.4     DA 21 0
20 CRTS J014304.7+263833 CV* 01 43 04.6556020465 +26 38 33.247066841           ~ 9 0
21 V* AR And CV* 01 45 03.2715491016 +37 56 33.237881916   15.929 15.671     ~ 92 0
22 FBS 0145+363 CV* 01 48 41.0454156576 +36 33 50.137848576           A2V 14 0
23 LAMOST J015016.17+375618.9 CV* 01 50 16.1853069486 +37 56 18.997430326           ~ 11 0
24 V* FL Cet CV* 01 55 43.4035163686 +00 28 07.157350911   15.682 15.446 15.848   ~ 63 0
25 V* AI Tri CV* 02 03 48.6151979976 +29 59 25.897508700           M2.5 51 1
26 CRTS J020804.2+373217 CV* 02 08 04.2156572306 +37 32 16.554678042   18.45 18.23 17.99 17.85 ~ 9 0
27 V* UV Per CV* 02 10 08.2720508904 +57 11 20.863265892           ~ 119 0
28 CRTS J021110.2+171624 CV* 02 11 10.2055949760 +17 16 24.160931904           ~ 13 0
29 LAMOST J021633.89+251346.5 CV* 02 16 33.8965029628 +25 13 46.648095231           ~ 2 0
30 HS 0218+3229 CV* 02 21 33.4824194472 +32 43 23.886726456           ?+K5e 28 0
31 HS 0220+0603 CV* 02 23 01.6666894560 +06 16 49.639082700   15.6 15.9     ~ 32 0
32 V* WY Tri CV* 02 25 00.4851021606 +32 59 55.825124236           ~ 25 0
33 V* RW Tri CV* 02 25 36.1556820000 +28 05 50.891220600   13.50 12.50     M0V 324 0
34 V* PQ And CV* 02 29 29.5680196128 +40 02 39.811816104           DA: 50 0
35 V* KW And CV* 02 35 17.9801396544 +41 14 02.250909276           ~ 12 0
36 CRTS J024048.5+195227 CV* 02 40 48.5356825200 +19 52 27.054272676     16.74     ~ 32 0
37 LAMOST J024621.48+271053.3 HS? 02 46 21.4911786840 +27 10 53.357197008           ~ 5 0
38 ASASSN -15bu CV* 02 54 43.7580742240 +22 44 02.174098892           ~ 9 0
39 CRTS J032034.5+203607 CV* 03 20 34.5308286504 +20 36 06.962011704     16.71     ~ 6 0
40 V* FT Cam CV* 03 21 14.3227683744 +61 05 26.576142000 16.6         ~ 22 0
41 CRTS J032855.0+052253 CV* 03 28 55.0139722824 +05 22 54.141270384           ~ 17 0
42 V* GK Per No* 03 31 12.0098863320 +43 54 15.469951212   14.139 13.090 12.589   K1IV 986 0
43 V* AF Cam CV* 03 32 15.4983960264 +58 47 22.148326104     13.40     ~ 54 0
44 PM J03338+3320 CV* 03 33 52.7697390312 +33 20 44.587956912     18.03     ~ 12 0
45 LAMOST J033940.98+414805.7 CV* 03 39 40.9898090784 +41 48 05.799573612           ~ 10 0
46 UCAC4 697-025541 CV* 03 40 17.9706136008 +49 21 32.319501804   13.511 13.267 12.950   DA 7 0
47 CRTS J034420.1+093007 CV* 03 44 20.1654085080 +09 30 06.933235392     17.67     F5 12 0
48 V* OV Tau CV* 03 46 06.2672967264 +29 41 14.734618512           ~ 32 0
49 V* V694 Tau Er* 03 57 59.6291028864 +24 29 14.953531740           ~ 7 0
50 V* FO Per CV* 04 08 34.9797162435 +51 14 48.142074010   14.18 14.03     sdB 49 0
51 UCAC4 614-012400 CV* 04 09 01.8343961723 +32 39 55.762720199   14.952 14.706 14.925   ~ 5 0
52 V* MY Per CV* 04 09 12.2221477152 +48 22 06.572151311           ~ 14 0
53 LAMOST J041238.07+320145.8 CV* 04 12 38.076 +32 01 45.87           ~ 2 0
54 V* IM Eri CV* 04 24 41.1074284200 -20 07 11.759455164 11.65 11.88 11.93     ~ 38 0
55 1RXS J042608.9+354151 CV* 04 26 09.3163349136 +35 41 45.184026696   16.1 15.86 15.7   ~ 20 0
56 ZTF J043609.49+364057.7 CV* 04 36 09.4938921232 +36 40 57.740370655   16.272 15.693 15.599   ~ 5 0
57 V* BF Eri CV* 04 39 29.9447621952 -04 35 58.869385008   15.07 14.58 14.71   D+K3 51 0
58 LAMOST J045745.94+312517.2 CV* 04 57 45.94 +31 25 17.3           ~ 2 0
59 V* V1208 Tau CV* 04 59 44.0374368264 +19 26 22.807583880           ~ 29 0
60 ATO J075.5875+47.1955 CV* 05 02 21.0043345752 +47 11 43.974372660           ~ 9 0
61 V* V1062 Tau CV* 05 02 27.4778229096 +24 45 23.157957240   17.159 16.717 16.319   ~ 85 0
62 V* AQ Men CV* 05 07 53.7698009664 -79 51 23.049678852 14.27 14.424 14.192 14.560   ~ 31 0
63 2MASS J05181432+2941130 CV* 05 18 14.3299931640 +29 41 13.040201580           ~ 20 0
64 1RXS J051922.6+155421 CV* 05 19 22.8993350832 +15 54 35.065363068           ~ 15 0
65 GALEX J051949.6+642921 CV* 05 19 49.5654314448 +64 29 21.660109728           ~ 4 0
66 ZTF J052254.86+402352.4 CV* 05 22 54.86 +40 23 52.5           ~ 4 0
67 2MASS J05243042+4244506 CV* 05 24 30.4643309280 +42 44 50.460570600           ~ 55 0
68 1RXS J052832.5+283824 CV* 05 28 32.6761475136 +28 38 37.734101088     16.46     ~ 19 0
69 V* T Aur No* 05 31 59.1180488976 +30 26 45.034081044           ~ 291 0
70 ATO J083.2795+17.6401 CV* 05 33 07.1008403582 +17 38 24.412599991           ~ 5 0
71 V* FS Aur CV* 05 47 48.3599178816 +28 35 11.207992848           ~ 121 0
72 V* V526 Ori Or* 05 50 41.5683406608 +09 18 19.574879004           ~ 10 0
73 V* LU Cam CV* 05 58 17.8724217408 +67 53 46.056395580           ~ 22 0
74 ATO J089.8611+45.3213 CV* 05 59 26.6760016320 +45 19 16.943874564   12.88 12.93 12.84   ~ 8 0
75 2MASS J06124927+1506419 CV* 06 12 49.2752923248 +15 06 42.278758380           ~ 6 0
76 V* SS Aur CV* 06 13 22.4340408984 +47 44 25.345431780   16.06 15.81     sdBe 272 0
77 2MASS J06141230+1704321 CV* 06 14 12.2903216784 +17 04 32.341854180     17.5     ~ 20 0
78 V* V344 Ori CV* 06 15 18.9474794400 +15 30 59.365826676           ~ 29 0
79 V* CZ Ori CV* 06 16 43.2247568736 +15 24 11.297210616   12.81 12.81 16.17   OB- 108 0
80 LAMOST J062953.90-033507.8 CV* 06 29 53.4 -03 35 05           ~ 6 0
81 ATO J098.0545+25.6062 CV* 06 32 13.1150443464 +25 36 22.893126048   15.86 15.22 14.97   ~ 19 0
82 ATO J098.2054+45.4949 Pu* 06 32 49.3072376055 +45 29 41.768187911           ~ 6 0
83 LAMOST J063440.10+140156.3 CV* 06 34 40.0944868581 +14 01 56.400436464           ~ 1 0
84 V* V647 Aur XB* 06 36 32.5534982712 +35 35 43.216106064           ~ 37 0
85 V* CW Mon CV* 06 36 54.5810314968 +00 02 17.285344080     11.90     ~ 75 0
86 1RXS J064434.5+334451 CV* 06 44 34.3633514232 +33 44 56.611374792 13.11   13.56   12.8 ~ 29 0
87 HS 0642+5049 CV* 06 46 19.6073560896 +50 45 49.211945352   16.6 16.8     ~ 19 0
88 V* IR Gem CV* 06 47 34.6827027456 +28 06 22.332682152           ~ 147 0
89 UCAC4 545-037393 CV* 07 01 16.0672127784 +18 53 30.241051836   15.53 15.39 15.86   ~ 6 0
90 V* V418 Gem XB* 07 04 08.6690512152 +26 25 10.763614452           ~ 41 0
91 LAMOST J070433.40+381926.4 CV* 07 04 33.4157916113 +38 19 26.582803719           ~ 1 0
92 V* V808 Aur CV* 07 11 26.0064549840 +44 04 05.104355016   15.01 16.25 15.12   ~ 34 0
93 KUV 07088+3232 HS* 07 12 02.1409066608 +32 26 41.471932884   14.73 14.65     sdO 16 0
94 ASASSN -14mv CV* 07 13 27.2826924408 +20 55 53.285034396   16.8   17.7   DB 25 0
95 CRTS J072007.4+451615 dS* 07 20 07.3812170856 +45 16 11.506716876           ~ 11 0
96 LAMOST J072304.77+020437.4 CV* 07 23 04.7785392336 +02 04 37.320977424           ~ 9 0
97 V* BG CMi CV* 07 31 29.0079060264 +09 56 23.030740248   14.5       ~ 246 0
98 V* V482 Cam CV* 07 33 41.4126954912 +67 32 15.629343864           ~ 25 0
99 SDSS J074859.55+312512.6 CV* 07 48 59.5616498736 +31 25 12.697893552         14.69 ~ 16 0
100 V* PQ Gem CV* 07 51 17.3280306912 +14 44 23.874868716   14.415 14.162 13.945   ~ 237 0
101 LAMOST J075330.78+044555.7 CV* 07 53 30.7826652408 +04 45 55.846187208   17.5   15.7   ~ 11 0
102 V* U Gem CV* 07 55 05.2324414746 +22 00 05.044127985   15.3 14.54     DA 1135 0
103 V* DW Cnc CV* 07 58 53.0399000904 +16 16 45.169158720           ~ 85 0
104 V* EZ Lyn CV* 08 04 34.2185575584 +51 03 49.366034352       17.4   DC: 85 0
105 CRTS J080846.2+313106 CV* 08 08 46.1915794416 +31 31 05.978257788           DOAe 25 0
106 2MASS J08125686+1911579 CV* 08 12 56.8553049864 +19 11 57.851022084           ~ 38 0
107 ASASSN -14ag CV* 08 13 18.5059415832 -01 03 28.460841264           ~ 16 0
108 V* FH Lyn CV* 08 13 21.9187599576 +45 28 09.275565864           K5.5 27 0
109 SDSS J082145.27+455923.4 CV* 08 21 45.2787286416 +45 59 23.390815092           DA 26 0
110 PG 0818+513 CV* 08 22 36.0475955184 +51 05 24.558779364   15.73       ~ 127 0
111 V* FL Lyn CV* 08 24 09.7330412856 +49 31 24.522761928           ~ 18 0
112 V* CC Cnc CV* 08 36 19.1533707432 +21 21 05.426956908           ~ 63 0
113 SDSS J083845.23+491055.4 CV* 08 38 45.2296350864 +49 10 55.366881636           ~ 25 0
114 SDSS J084026.15+220446.5 CV* 08 40 26.1634338768 +22 04 46.647890184           ~ 11 0
115 V* EG Cnc CV* 08 43 03.9863206560 +27 51 49.693595508           DAe 195 0
116 V* AC Cnc CV* 08 44 27.1121665272 +12 52 31.995783264   13.80 14.15     K1-3V 154 0
117 1ES 0851+39.2 XB* 08 54 14.0224748952 +39 05 37.350859092   16.4 16.4     ~ 35 0
118 V* AK Cnc CV* 08 55 21.1855841064 +11 18 15.072556860           B8III 72 0
119 SDSS J085835.56+281356.3 CV* 08 58 35.5583790648 +28 13 56.323375068           DA+? 7 0
120 V* SY Cnc CV* 09 01 03.3195626400 +17 53 56.030744400   12.757 12.498 12.078   ?+M0-V 166 0
121 UCAC4 524-048824 CV* 09 01 13.5078126696 +14 47 04.661585376   16.316 16.199 16.073   A0p 17 0
122 CRTS J090150.0+375444 CV* 09 01 50.0901171552 +37 54 44.277788592     16.88     ~ 5 0
123 V* GY Cnc CV* 09 09 50.5407550968 +18 49 47.429496300           ~ 87 0
124 SDSS J091127.35+084140.7 CV* 09 11 27.3578533032 +08 41 40.848518724         15.65 M2e 17 0
125 SDSS J091410.71+013732.9 CV* 09 14 10.7176129048 +01 37 32.997288709           ~ 6 0
126 V* GZ Cnc CV* 09 15 51.6769229568 +09 00 49.657853448           ~ 48 0
127 V* HH Cnc CV* 09 16 50.7593598360 +28 49 43.275874008           ~ 25 0
128 V* HU Leo CV* 09 24 44.4793066992 +08 01 51.003559416           M0 21 0
129 2MASS J09253483+4349179 CV* 09 25 34.8434438160 +43 49 17.774455080   13.84 12.94     ~ 17 0
130 V* QS UMa CV* 09 32 14.8304596680 +49 50 54.692429712   17.44       F9 24 0
131 US 691 CV* 09 32 49.5710900832 +47 25 22.835904240   18.14 18.01     ~ 31 1
132 2MASS J09400257+2749420 CV* 09 40 02.5758546648 +27 49 42.009024900           ~ 19 0
133 RX J0944.5+0357 CV* 09 44 31.6813494432 +03 58 05.300563116   17.525 17.019 15.574   M2V 42 0
134 V* HY Leo XB* 09 46 34.4706027984 +13 50 57.845238504           sdA 32 0
135 V* ER UMa CV* 09 47 11.9410111200 +51 54 08.950092804 14.351 14.03 13.91 14.909 14.629 ~ 161 0
136 V* X Leo CV* 09 51 01.4657296584 +11 52 31.244512908           ~ 138 0
137 V* RZ LMi CV* 09 51 48.9263549904 +34 07 23.966634108           DA 123 0
138 RX J0953.1+1458 CV* 09 53 08.2015308360 +14 58 36.443570772           ~ 24 0
139 CRTS J100515.4+191108 CV* 10 05 15.3879044472 +19 11 07.855402812           ~ 24 0
140 CRTS J100658.4+233724 CV* 10 06 58.4169543888 +23 37 24.466842948           D+M3e 35 0
141 V* SW Sex CV* 10 15 09.3769935988 -03 08 32.850732738           ~ 223 0
142 V* AC LMi CV* 10 19 47.2794203328 +33 57 53.643988296     17.5     ~ 23 0
143 V* KS UMa CV* 10 20 26.5185297792 +53 04 33.089641968   17.0       ~ 75 0
144 1H 1025+220 CV* 10 28 00.0805880112 +21 48 13.573560492   16.46 16.37     ~ 36 0
145 V* DO Leo CV* 10 40 51.2356783008 +15 11 33.698292468           ~ 38 0
146 V* SX LMi CV* 10 54 30.4187071632 +30 06 10.358155512   16.9   15.6   ~ 83 0
147 SDSS J105550.08+095620.4 CV* 10 55 50.0757249983 +09 56 20.571915792           F5 18 0
148 V* CY UMa CV* 10 56 56.9964835104 +49 41 18.201049512   17.0       ~ 111 1
149 V* IU Leo CV* 10 57 56.2934591904 +09 23 14.882026920   16.309 15.588 15.373   ~ 24 0
150 V* HK Leo CV* 11 17 03.5267153856 +18 25 58.282336884   14.6 14.70 14.8   DA+dMe 35 0
151 V* MR UMa CV* 11 31 22.3979617152 +43 22 38.474604624           ~ 47 1
152 V* QZ Vir CV* 11 38 26.8241432424 +03 22 07.110298596     15.81     ~ 269 1
153 ASASSN -17fo CV* 11 38 35.6791245960 +04 44 54.707996364           ~ 7 0
154 LAMOST J114214.41+533002.5 RS* 11 42 14.4191278425 +53 30 02.655862874           ~ 3 0
155 V* TW Vir CV* 11 45 21.1711886016 -04 26 05.777690964   17.38   15.03   M2 151 0
156 V* AM CVn CV* 12 34 54.6231062664 +37 37 44.120620056   14.02 14.13 14.47   DBnnp 434 0
157 V* V406 Vir CV* 12 38 13.7337832872 -03 39 32.965818228           DA3e 62 0
158 V* GO Com CV* 12 56 37.0931472264 +26 36 43.236800316           ~ 85 0
159 G 61-29 CV* 13 05 42.4009686696 +18 01 03.763561619   16.059 16.101 15.825   DBe 284 0
160 V* EV UMa CV* 13 07 53.8583243765 +53 51 30.498937628           ~ 71 0
161 MASTER OT J132104.04+560957.8 CV* 13 21 04.0096260336 +56 09 58.016570472           ~ 24 0
162 V* UX UMa CV* 13 36 40.9531256400 +51 54 49.423353228   12.78 13.26     sdOB 556 0
163 V* V355 UMa CV* 13 39 41.1389765496 +48 47 27.466647216   17.2 18.01 17.3   DC: 58 1
164 V* HW Boo CV* 13 43 23.1746633496 +15 09 16.825941036     18.5     ~ 24 0
165 SDSS J134441.83+204408.3 CV* 13 44 41.8335823344 +20 44 08.612197584   17.61 17.89     ~ 18 1
166 SDSS J143209.78+191403.4 CV* 14 32 09.7890967224 +19 14 03.651546228           ~ 11 0
167 SDSS J150137.22+550123.4 CV* 15 01 37.2173710728 +55 01 23.280739320   18.2   18.8   DA: 35 0
168 V* NZ Boo CV* 15 02 41.0007781680 +33 34 24.002686380           ~ 47 0
169 V* NY Ser CV* 15 13 02.2954585632 +23 15 08.407860084   15.648 15.699     ~ 81 0
170 SDSS J153634.42+332851.9 CV* 15 36 34.4246488440 +33 28 51.883240440           ~ 19 0
171 V* LX Ser CV* 15 38 00.0938074584 +18 52 03.244681812     15.06     G8Ve 162 0
172 CRTS J153817.3+512338 CV* 15 38 17.3344808664 +51 23 37.983510960     18.06     ~ 25 0
173 V* CT Ser No* 15 45 39.0752447088 +14 22 31.757902824   16.772 16.530     ~ 84 0
174 PG 1550+191 CV* 15 52 47.1968971224 +18 56 28.844471472   16.4 15.46 17.0   M6.5Ve 202 0
175 RX J1557.3+1807 CV* 15 57 20.7570130776 +18 07 20.185758840           ~ 16 0
176 2MASS J16221246+3411473 CV* 16 22 12.4482949272 +34 11 47.250130596           ~ 11 0
177 V* V1189 Her CV* 16 29 36.5308232544 +26 35 19.634401932           M0 17 0
178 V* V849 Her CV* 16 35 45.7199723712 +11 24 58.062796920 14.63 15.28 15.30     sdB 35 0
179 V* V1239 Her CV* 17 02 13.2462561912 +32 29 54.159948960           M1.5e 60 0
180 CRTS J171222.0+321856 CV* 17 12 22.0650587448 +32 18 56.252344500     17.00     ~ 9 0
181 V* V795 Her CV* 17 12 56.1689188488 +33 31 19.240640724   12.53 12.64 12.69   ~ 191 0
182 V* V638 Her CV* 17 16 30.8315116872 +44 41 24.519958692           ~ 11 0
183 V* V825 Her CV* 17 18 36.9999462264 +41 15 51.154576704   14.32       ~ 52 0
184 SDSS J172758.13+380022.4 CV* 17 27 58.1384193648 +38 00 22.442337792   17.1   18.2   ~ 13 0
185 V* V660 Her CV* 17 42 09.1616799096 +23 48 29.730820608           ~ 35 0
186 ASASSN -14cv CV* 17 43 48.5748176784 +52 03 45.757209816           ~ 18 0
187 V* V884 Her CV* 18 02 06.4848200016 +18 04 43.839425568   13.315 13.382 14.753   ~ 63 0
188 V* AM Her CV* 18 16 13.2546725104 +49 52 04.759613537   15.124 14.808 13.525   M4.5-5Ve 1009 2
189 MAXI J1820+070 LXB 18 20 21.9423816480 +07 11 07.284859440           ~ 511 0
190 LAMOST J182212.67+163708.7 CV* 18 22 12.6753071968 +16 37 08.745309636           ~ 3 0
191 V* V344 Lyr CV* 18 44 39.1748179896 +43 22 28.051269960           sdB 114 0
192 2MASS J18583091+4914326 CV* 18 58 30.9226754016 +49 14 32.644481568     16.5     ~ 14 0
193 V* MV Lyr CV* 19 07 16.2886463256 +44 01 07.869892008   13.040 12.920 12.489 12.578 M5Ve 307 0
194 V* V754 Lyr EB* 19 12 23.3059649088 +40 49 53.480757360           ~ 22 0
195 2MASS J19241081+4459348 CV* 19 24 10.8085608456 +44 59 34.797652800           ~ 29 0
196 V* V1948 Cyg CV* 19 29 12.7386572448 +50 06 15.511209804   13.170 13.308 14.230   ~ 7 1
197 TYC 3556-325-1 CV* 19 31 29.1493336416 +45 59 06.100215324   12.46 12.68     DA 41 0
198 V* EM Cyg CV* 19 38 40.1068970904 +30 30 28.332591012     11.90     ~ 270 0
199 2MASS J20230038+0631424 CV* 20 23 00.3834250056 +06 31 42.470775984   15.4   15.5   ~ 8 0
200 2MASS J20430593+3413405 CV* 20 43 05.9479194216 +34 13 40.629391752   16.0 15.0     ~ 14 0
201 EM* LkHA 170 Ae* 20 52 12.7783926120 +44 19 26.086865808   14.958 14.578 14.261   A0e 124 0
202 LAMOST J211249.93+374225.8 CV* 21 12 49.9403022873 +37 42 25.969303895           ~ 2 0
203 SWIFT J2124.6+0500 CV* 21 24 12.4381488528 +05 02 43.592533512   12.774 12.631 13.107   ~ 17 0
204 ATO J323.9971+05.4501 CV* 21 35 59.3058396792 +05 27 00.544677588           ~ 14 0
205 MASTER OT J213806.60+261957.0 CV* 21 38 06.6254940456 +26 19 56.032997592 15.69 15.72 15.23 14.76 14.30 ~ 54 0
206 SDSS J214140.43+050730.0 CV* 21 41 40.4470139568 +05 07 30.236842560           ~ 14 0
207 V* SS Cyg CV* 21 42 42.8034497592 +43 35 09.867842484 11.07 12.651 12.032 9.326   K5V 1324 1
208 SDSS J214354.60+124458.0 CV* 21 43 54.6021262992 +12 44 57.849921960           DA+M 19 0
209 V* UU Aqr CV* 22 09 05.7613016472 -03 46 17.688853416   13.998 13.919 13.735   ~ 153 0
210 V* HL Aqr CV* 22 20 26.9273134056 +02 00 53.375434236   13.45       ~ 59 0
211 V* V537 Peg CV* 22 43 40.7046188472 +30 55 20.057929824   13.8 13.74     ~ 19 0
212 V* V367 Peg CV* 22 45 00.7055412768 +16 55 13.624468068     18.38     ~ 14 0
213 CRTS J225017.7+060646 RS* 22 50 17.7790559568 +06 06 45.770512068     16.10     ~ 8 0
214 CRTS J225843.5+110912 CV* 22 58 43.4810964288 +11 09 12.051240696   18.9   19.4   ~ 26 0
215 V* HY Psc CV* 23 03 51.6358936128 +01 06 51.155488332   17.5       ~ 29 0
216 V* V405 Peg CV* 23 09 49.1427434688 +21 35 17.178113760   16.675 16.193 16.025   ?+M3/4.5e 49 1
217 SDSS J231330.83+165416.7 CV* 23 13 30.8178557880 +16 54 16.791681600   20.3   19.3   ~ 7 0
218 V* IP Peg CV* 23 23 08.5362249504 +18 24 59.206884012           M2 395 0
219 V* EI Psc CV* 23 29 54.2146447848 +06 28 11.596023228   16.86 16.22     ~ 141 0
220 2MASS J23375921+4308509 CV* 23 37 59.2141153440 +43 08 51.030995028           ~ 20 0

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