2009MNRAS.397.2170G

Query : 2009MNRAS.397.2170G

2009MNRAS.397.2170G - Mon. Not. R. Astron. Soc., 397, 2170-2188 (2009/August-3)

SDSS unveils a population of intrinsically faint cataclysmic variables at the minimum orbital period.

GANSICKE B.T., DILLON M., SOUTHWORTH J., THORSTENSEN J.R., RODRIGUEZ-GIL P., AUNGWEROJWIT A., MARSH T.R., SZKODY P., BARROS S.C.C., CASARES J., DE MARTINO D., GROOT P.J., HAKALA P., KOLB U., LITTLEFAIR S.P., MARTINEZ-PAIS I.G., NELEMANS G. and SCHREIBER M.R.

Abstract (from CDS):

We discuss the properties of 137 cataclysmic variables (CVs) which are included in the Sloan Digital Sky Survey (SDSS) spectroscopic data base, and for which accurate orbital periods have been measured. 92 of these systems are new discoveries from SDSS and were followed-up in more detail over the past few years. 45 systems were previously identified as CVs because of the detection of optical outbursts and/or X-ray emission, and subsequently re-identified from the SDSS spectroscopy. The period distribution of the SDSS CVs differs dramatically from that of all the previously known CVs, in particular it contains a significant accumulation of systems in the orbital period range 80-86min. We identify this feature as the elusive `period minimum spike' predicted by CV population models, which resolves a long-standing discrepancy between compact binary evolution theory and observations. We show that this spike is almost entirely due to the large number of CVs with very low accretion activity identified by SDSS. The optical spectra of these systems are dominated by emission from the white dwarf photosphere, and display little or no spectroscopic signature from the donor stars, suggesting very low mass companion stars. We determine the average absolute magnitude of these low-luminosity CVs at the period minimum to be <Mg> = 11.6±0.7. Comparison of the SDSS CV sample to the CVs found in the Hamburg Quasar Survey and the Palomar Green Survey suggests that the depth of SDSS is the key ingredient resulting in the discovery of a large number of intrinsically faint short-period systems.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): binaries: close - stars: dwarf novae - stars: evolution - novae, cataclysmic variables - stars: statistics

Simbad objects: 154

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Number of rows : 154
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* EN Cet CV* 00 27 28.0142432256 -01 08 28.473348516           ~ 14 1
2 SDSS J003941.06+005427.4 CV* 00 39 41.0711358672 +00 54 27.713662560           ~ 16 0
3 SDSS J004335.13-003729.8 CV* 00 43 35.1323298096 -00 37 29.848711836           ~ 18 0
4 V* GS Cet CV* 00 50 50.8824768384 +00 09 12.710847384           ~ 14 0
5 HD 7590 BY* 01 16 29.2528915488 +42 56 21.902701200   7.17 6.59     G0-V(k) 105 0
6 V* GY Cet CV* 01 31 32.3907990576 -09 01 22.326479976   18.61 18.54     DC: 31 0
7 V* ZZ Cet WD* 01 36 13.6153974672 -11 20 32.632874601   14.328 14.16 14.4   DA4.0 307 0
8 V* GZ Cet CV* 01 37 01.0693101024 -09 12 34.719127956     18.52     ~ 42 0
9 V* BG Ari CV* 01 51 51.8693063904 +14 00 47.172245508           ~ 26 0
10 V* FL Cet CV* 01 55 43.4035163686 +00 28 07.157350911   15.682 15.446 15.848   ~ 63 0
11 V* TT Ari CV* 02 06 53.0797508832 +15 17 41.851038804   10.73 10.20     Bep: 459 0
12 V* HP Cet CV* 02 33 22.6019660640 +00 50 59.598080484           ~ 24 0
13 V* KY Eri CV* 03 10 51.6706624176 -07 55 00.371460504           ~ 17 0
14 CRTS J032855.0+052253 CV* 03 28 55.0139722824 +05 22 54.141270384           ~ 17 0
15 V* LT Eri CV* 04 07 14.7818653656 -06 44 25.166660172           ~ 31 0
16 V* EQ Lyn CV* 07 45 31.9377871128 +45 38 29.742618480           DC: 40 0
17 CRTS J074640.6+173412 CV* 07 46 40.6203999864 +17 34 12.822347712           ~ 19 0
18 CRTS J075100.0+141150 CV* 07 50 59.9739485256 +14 11 50.232703632           ~ 18 0
19 V* PQ Gem CV* 07 51 17.3280306912 +14 44 23.874868716   14.415 14.162 13.945   ~ 237 0
20 V* EU Lyn CV* 07 52 40.4510831064 +36 28 23.216489076           ~ 20 0
21 V* EV Lyn CV* 07 54 43.0106636160 +50 07 29.095115196           ~ 17 0
22 SDSS J075507.69+143547.6 CV* 07 55 07.7029284216 +14 35 47.871792492   17.8   17.8   DA 20 0
23 V* HT Cam CV* 07 57 01.3362559272 +63 06 02.000945340   16.36       ~ 78 0
24 V* DW Cnc CV* 07 58 53.0399000904 +16 16 45.169158720           ~ 85 0
25 SDSS J075939.79+191417.2 CV* 07 59 39.7852238802 +19 14 17.253277417   18.63 18.65     ~ 16 1
26 KUV 07589+4019 CV* 08 02 15.3894364464 +40 10 47.128696536   16.0   15.0   sdB 19 0
27 V* EZ Lyn CV* 08 04 34.2185575584 +51 03 49.366034352       17.4   DC: 85 0
28 SDSS J080534.49+072029.1 CV* 08 05 34.4947713240 +07 20 29.136673284           K5 11 0
29 CRTS J080846.2+313106 CV* 08 08 46.1915794416 +31 31 05.978257788           DOAe 25 0
30 HS 0805+3822 CV* 08 09 08.3945706216 +38 14 06.206132976           ~ 31 0
31 SDSS J081207.64+131824.4 CV* 08 12 07.6427333040 +13 18 24.461128152   19.8   19.5   ~ 19 0
32 2MASS J08125686+1911579 CV* 08 12 56.8553049864 +19 11 57.851022084           ~ 38 0
33 V* FH Lyn CV* 08 13 21.9187599576 +45 28 09.275565864           K5.5 27 0
34 2MASS J08135201+2813174 CV* 08 13 52.0197009432 +28 13 17.306162436           ~ 16 0
35 PG 0818+513 CV* 08 22 36.0475955184 +51 05 24.558779364   15.73       ~ 127 0
36 V* FL Lyn CV* 08 24 09.7330412856 +49 31 24.522761928           ~ 18 0
37 V* CC Cnc CV* 08 36 19.1533707432 +21 21 05.426956908           ~ 63 0
38 V* SW UMa CV* 08 36 42.7492998204 +53 28 37.976599017           ~ 315 0
39 SDSS J083845.23+491055.4 CV* 08 38 45.2296350864 +49 10 55.366881636           ~ 25 0
40 V* EG Cnc CV* 08 43 03.9863206560 +27 51 49.693595508           DAe 195 0
41 V* V495 Hya CV* 08 44 00.0992860440 +02 39 19.343312748           ~ 20 0
42 V* CT Hya CV* 08 51 07.3931442504 +03 08 34.362546720           ~ 52 0
43 V* BZ UMa CV* 08 53 44.1735972456 +57 48 40.593710304   15.95 17.58 14.98 15.38 M5.5:Ve 164 0
44 1ES 0851+39.2 XB* 08 54 14.0224748952 +39 05 37.350859092   16.4 16.4     ~ 35 0
45 RX J0859.1+0537 CV* 08 59 09.1821682632 +05 36 54.593762148   17.9 17     ~ 28 0
46 US 2109 CV* 09 00 16.5560785920 +43 01 18.205295304   18.8       M2 20 0
47 V* PU UMa CV* 09 01 03.9390477912 +48 09 11.060691948           ~ 23 0
48 CRTS J090350.7+330036 CV* 09 03 50.7253230816 +33 00 36.113249628           DQ: 32 0
49 GALEX J090403.5+035501 CV* 09 04 03.4818393575 +03 55 01.259832143   18.7   19.0   ~ 22 0
50 V* GY Cnc CV* 09 09 50.5407550968 +18 49 47.429496300           ~ 87 0
51 SDSS J091127.35+084140.7 CV* 09 11 27.3578533032 +08 41 40.848518724         15.65 M2e 17 0
52 PG 0911-066 CV* 09 14 14.0293028112 -06 47 44.773184220   17.6   19.1   ~ 45 0
53 V* LV Cnc CV* 09 19 45.1192368384 +08 57 10.100184120     17.7     DC: 27 0
54 V* V524 Hya CV* 09 20 09.5444896656 +00 42 44.945689248           ~ 15 0
55 CRTS J092122.8+203858 CV* 09 21 22.8425924760 +20 38 57.088477320           ~ 16 0
56 V* HU Leo CV* 09 24 44.4793066992 +08 01 51.003559416           M0 21 0
57 V* QS UMa CV* 09 32 14.8304596680 +49 50 54.692429712   17.44       F9 24 0
58 US 691 CV* 09 32 49.5710900832 +47 25 22.835904240   18.14 18.01     ~ 31 1
59 V* HM Leo CV* 09 38 36.9804137328 +07 14 55.122280584           ?+M3V 30 0
60 RX J0944.5+0357 CV* 09 44 31.6813494432 +03 58 05.300563116   17.525 17.019 15.574   M2V 42 0
61 V* DV UMa CV* 09 46 36.5964360384 +44 46 44.683031784   19.0       DA:+M 131 0
62 V* RZ LMi CV* 09 51 48.9263549904 +34 07 23.966634108           DA 123 0
63 CRTS J100515.4+191108 CV* 10 05 15.3879044472 +19 11 07.855402812           ~ 24 0
64 CRTS J100658.4+233724 CV* 10 06 58.4169543888 +23 37 24.466842948           D+M3e 35 0
65 V* GG Leo CV* 10 15 34.6774861296 +09 04 41.988487224           ~ 57 0
66 V* AC LMi CV* 10 19 47.2794203328 +33 57 53.643988296     17.5     ~ 23 0
67 V* KS UMa CV* 10 20 26.5185297792 +53 04 33.089641968   17.0       ~ 75 0
68 PB 195 CV* 10 23 20.2786762488 +44 05 09.844341252   17.5       ~ 28 0
69 PSR J1023+0038 Psr 10 23 47.6841824712 +00 38 41.005893516     17.31     GV 470 0
70 1H 1025+220 CV* 10 28 00.0805880112 +21 48 13.573560492   16.46 16.37     ~ 36 0
71 V* IL Leo CV* 10 31 00.5561075256 +20 28 32.339638848   18.67 18.71     ~ 24 1
72 SDSS J103533.02+055158.4 CV* 10 35 33.0226966464 +05 51 58.334599512   18.57 18.80     DA 64 0
73 V* IY UMa CV* 10 43 56.7487980888 +58 07 31.920814488   17.52 16.61 17.62 17.60 ~ 119 0
74 V* EK UMa CV* 10 51 35.1578195280 +54 04 36.112715220           ~ 89 1
75 V* SX LMi CV* 10 54 30.4187071632 +30 06 10.358155512   16.9   15.6   ~ 83 0
76 V* CY UMa CV* 10 56 56.9964835104 +49 41 18.201049512   17.0       ~ 111 1
77 CRTS J110014.7+131552 CV* 11 00 14.7216076608 +13 15 52.203908664           ~ 20 0
78 V* AN UMa CV* 11 04 25.6556168328 +45 03 13.940184528     14.90     ~ 261 0
79 V* ST LMi CV* 11 05 39.7664319408 +25 06 28.746723096   16.832 16.524 15.639   DAH+M 228 0
80 V* AR UMa CV* 11 15 44.5891034908 +42 58 22.431026739     16.4     O9I 154 0
81 V* MR UMa CV* 11 31 22.3979617152 +43 22 38.474604624           ~ 47 1
82 V* RZ Leo CV* 11 37 22.2524330304 +01 48 58.617459936     19.6     DA+dM2 170 0
83 V* QZ Vir CV* 11 38 26.8241432424 +03 22 07.110298596     15.81     ~ 269 1
84 V* EU UMa CV* 11 49 55.7017863576 +28 45 07.294697604   15.4       DB+K 83 1
85 SDSS J115207.00+404947.6 CV* 11 52 07.0049089008 +40 49 47.903371500           ~ 25 0
86 V* BC UMa CV* 11 52 15.8342499696 +49 14 41.887768632           DC: 112 0
87 V* V379 Vir CV* 12 12 09.3077194872 +01 36 27.771237504           DAH 78 0
88 SDSS J121607.03+052013.9 CV* 12 16 07.0370194344 +05 20 13.944107004           ~ 18 0
89 V* GP CVn CV* 12 27 40.8198845784 +51 39 24.962023620   18.89 19.08     DA+M 40 0
90 V* V406 Vir CV* 12 38 13.7337832872 -03 39 32.965818228           DA3e 62 0
91 V* V351 UMa CV* 12 44 26.2807783848 +61 35 14.608365504           ~ 16 0
92 V* OV Dra CV* 12 50 23.8536064176 +66 55 25.477186188           ~ 22 0
93 V* GO Com CV* 12 56 37.0931472264 +26 36 43.236800316           ~ 85 0
94 V* V485 Cen CV* 12 57 23.1807645432 -33 12 05.742562932           ~ 111 0
95 V* EV UMa CV* 13 07 53.8583243765 +53 51 30.498937628           ~ 71 0
96 V* PZ Vir CV* 13 24 11.5773233808 +03 20 50.414201160   22.47 21.37 20.5   M5:V 28 0
97 V* OZ Dra CV* 13 27 23.3849161008 +65 28 54.313407696           ~ 19 0
98 V* V355 UMa CV* 13 39 41.1389765496 +48 47 27.466647216   17.2 18.01 17.3   DC: 58 1
99 V* HW Boo CV* 13 43 23.1746633496 +15 09 16.825941036     18.5     ~ 24 0
100 PM J14332+1011 CV* 14 33 17.7877088088 +10 11 23.484691356     18.86     ~ 60 0
101 V* OU Vir CV* 14 35 00.2216793576 -00 46 06.269754864   18.5       M2: 56 0
102 V* KV Dra CV* 14 50 38.3283335160 +64 03 29.003633136           DQ 38 0
103 SDSS J150137.22+550123.4 CV* 15 01 37.2173710728 +55 01 23.280739320   18.2   18.8   DA: 35 0
104 V* NZ Boo CV* 15 02 41.0007781680 +33 34 24.002686380           ~ 47 0
105 V* OV Boo CV* 15 07 22.3698571080 +52 30 39.804859764   18.7   18.5   DAe 82 0
106 V* NY Ser CV* 15 13 02.2954585632 +23 15 08.407860084   15.648 15.699     ~ 81 0
107 V* GW Lib No* 15 19 55.3333785336 -25 00 24.614534520           DA: 228 0
108 PM J15243+2209 CV* 15 24 19.3410078192 +22 09 20.059840296     19.32     ~ 23 0
109 V* QW Ser CV* 15 26 13.9668843408 +08 18 02.490457464           DA:H: 49 0
110 CRTS J153817.3+512338 CV* 15 38 17.3344808664 +51 23 37.983510960     18.06     ~ 25 0
111 V* BM CrB XB* 15 41 04.6700788056 +36 02 52.844377992           ~ 19 0
112 PG 1550+191 CV* 15 52 47.1968971224 +18 56 28.844471472   16.4 15.46 17.0   M6.5Ve 202 0
113 V* MQ Dra CV* 15 53 31.1198078328 +55 16 14.475178272     17.35     M5Ve 57 0
114 V* AP CrB CV* 15 54 12.3454476576 +27 21 52.290975024     16.87 16.5   M3 47 0
115 V* V489 Ser CV* 15 55 31.9965141790 -00 10 55.061446376       19.5   ~ 18 2
116 V* V493 Ser CV* 15 56 44.2350520968 -00 09 50.222876328           ~ 34 0
117 V* QZ Ser CV* 15 56 54.4738717848 +21 07 19.083494676           ?+K4Ve 61 0
118 V* BT CrB CV* 15 56 56.9257230384 +35 23 36.661930980   19.1   18.8   ~ 16 0
119 SDSS J160745.02+362320.7 CV* 16 07 45.0114224688 +36 23 20.732484300   17.89 18.03     ~ 12 0
120 V* V519 Ser CV* 16 10 07.5050195232 +03 52 32.768115240     15.9     ~ 26 0
121 V* V386 Ser CV* 16 10 33.6304596192 -01 02 23.216047440           DA: 47 0
122 V* V844 Her CV* 16 25 01.7475368040 +39 09 26.359853904       16.2   DQ 73 0
123 CRTS J162718.4+120435 CV* 16 27 18.3997817112 +12 04 35.034812688           ~ 21 0
124 V* V1189 Her CV* 16 29 36.5308232544 +26 35 19.634401932           M0 17 0
125 V* V2690 Oph CV* 16 37 22.2136967040 -00 19 57.117170964           ~ 16 0
126 SDSS J164248.52+134751.4 CV* 16 42 48.5235499128 +13 47 51.431336340           ~ 17 1
127 SDSS J165359.06+201010.4 CV* 16 53 59.0599392384 +20 10 10.399004940     17.56     ~ 21 0
128 LS IV -08 3 CV* 16 56 29.6223906432 -08 34 38.705979432   11.73 11.54     sdB 27 0
129 V* V1229 Her CV* 16 56 58.1244908232 +21 21 39.373627752   18.38 18.38     DQ: 17 0
130 SDSS J165837.70+184727.4 CV* 16 58 37.7047164816 +18 47 27.339325044   19.97 20.23     ~ 12 0
131 V* V1237 Her CV* 17 00 53.2970413128 +40 03 57.805683552           ~ 22 0
132 V* V1239 Her CV* 17 02 13.2462561912 +32 29 54.159948960           M1.5e 60 0
133 V* V1247 Her CV* 17 11 45.0801617640 +30 13 20.052582348           ~ 13 0
134 SDSS J173008.38+624754.7 CV* 17 30 08.3649113616 +62 47 54.672365112   15.3 15.91     ~ 35 0
135 V* MV Lyr CV* 19 07 16.2886463256 +44 01 07.869892008   13.040 12.920 12.489 12.578 M5Ve 307 0
136 V* WZ Sge CV* 20 07 36.5037622512 +17 42 14.733254952   15.30 15.20 10.817   D 982 0
137 SDSS J204448.92-045928.8 CV* 20 44 48.9225407448 -04 59 28.809306348           K4/5e 23 0
138 SDSS J204817.85-061044.8 CV* 20 48 17.8483614432 -06 10 44.748728040           ~ 20 0
139 2MASS J20501785-0536269 CV* 20 50 17.86 -05 36 26.9           ~ 19 0
140 V* QT Aqr CV* 20 59 14.8731100248 -06 12 20.463258888           ~ 13 0
141 SDSS J210014.12+004446.0 CV* 21 00 14.1126694296 +00 44 46.002858864   16.4 16.3     ~ 29 0
142 V* QV Aqr CV* 21 04 49.9474098672 +01 05 45.824282160           ~ 14 0
143 V* VV Equ CV* 21 16 05.436 +11 34 07.29           ~ 11 0
144 V* DM Cap CV* 21 54 11.1291520872 -09 01 21.552047112           ~ 8 0
145 CRTS J220554.0+115554 CV* 22 05 53.9741753952 +11 55 53.713764372           ~ 25 0
146 FASTT 1560 CV* 22 34 39.9293864256 +00 41 27.314123388           ~ 21 0
147 V* V349 Aqr CV* 22 38 43.8299592768 +01 08 20.710907664           ~ 28 0
148 GD 552 CV* 22 50 39.9583863216 +63 28 38.330366988   16 16.47     D 74 0
149 PB 7412 CV* 22 58 31.1815672728 -09 49 31.654510500   15   15.04   ~ 24 0
150 V* HY Psc CV* 23 03 51.6358936128 +01 06 51.155488332   17.5       ~ 29 0
151 V* EI Psc CV* 23 29 54.2146447848 +06 28 11.596023228   16.86 16.22     ~ 141 0
152 V* V598 Peg CV* 23 33 25.9215793536 +15 22 22.152761760   18.4   18.4   ~ 31 0
153 V* V455 And CV* 23 34 01.4484962496 +39 21 40.866079356   16.220 16.094 16.137   DQ 166 0
154 V* BW Scl CV* 23 53 00.8741941392 -38 51 46.662458688   16.7       D 85 0

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