2015ApJ...808...80C

Query : 2015ApJ...808...80C

2015ApJ...808...80C - Astrophys. J., 808, 80 (2015/July-3)

A FWHM-K2 correlation in black hole transients.

CASARES J.

Abstract (from CDS):

We compare emission profiles of 12 dynamically confirmed black holes (BHs) and 2 neutron star X-ray transients (SXTs) in quiescence with those of a sample of 43 Cataclysmic Variables (CVs), also quiescent. The FWHM of the line in SXTs is tightly correlated with the velocity semi-amplitude of the donor star. This new correlation, when combined with orbital periods (i.e., through photometric light curves), allows for the possibility of estimating compact object mass functions from single integration, low-resolution spectroscopy. On the other hand, CVs above the period gap are found to follow a flatter correlation, a likely consequence of their larger mass ratios. We also find that the FWHM traces the disk velocity at42%, independently of binary mass ratio. In addition, for a given FWHM, BHs tend to have lower EWs than CVs. This might be explained by the fact that CVs must be seen at higher inclinations to mimic the same projected disk velocities as BH SXTs. For the same reason, CVs with km/s are mostly eclipsing while none of our sample BHs are. Furthermore, we show that there is a vacant/unoccupied region for CVs in the FWHM-EW plane defined by. Both the FWHM-K2 correlation and the FWHM-EW plane can be exploited, together with photometric light curves, to efficiently discover quiescent BHs in deep surveys of the Galactic plane.

Abstract Copyright: ∼

Journal keyword(s): accretion, accretion disks - binaries: close - novae, cataclysmic variables - stars: black holes - stars: dwarf novae - stars: neutron

Simbad objects: 59

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Number of rows : 59
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 V* HT Cas CV* 01 10 13.1213394144 +60 04 35.489642700     14.10     M5.5e 388 0
2 HS 0218+3229 CV* 02 21 33.4824194472 +32 43 23.886726456           ?+K5e 24 0
3 V* GK Per No* 03 31 12.0098863320 +43 54 15.469951212   14.139 13.090 12.589   K1IV 935 0
4 V* V518 Per HXB 04 21 42.7227473352 +32 54 26.939156184 13.00 13.50 13.2     M4.5V 651 1
5 V* BF Eri CV* 04 39 29.9447621952 -04 35 58.869385008   15.07 14.58 14.71   D+K3 44 0
6 V* CN Ori CV* 05 52 07.7842206216 -05 25 00.543695772           ~ 175 0
7 V* SS Aur CV* 06 13 22.4340408984 +47 44 25.345431780   16.06 15.81     sdBe 261 0
8 1A 0620-00 HXB 06 22 44.5423857312 -00 20 44.290460544 10.60 11.40 11.2     K3V-K7V 1113 0
9 V* UY Pup CV* 07 46 31.2402238920 -12 57 08.997056712         15.09 K2/6+? 36 0
10 V* U Gem CV* 07 55 05.2323858391 +22 00 05.045435077   15.3 14.54     DA 1101 0
11 V* Z Cha CV* 08 07 27.7517751528 -76 32 00.665029356           M5.5 605 1
12 V* FH Lyn CV* 08 13 21.9187599576 +45 28 09.275565864           K5.5 25 0
13 V* Z Cam CV* 08 25 13.1986690656 +73 06 39.284964108   12.006 11.927 11.712   ~ 525 0
14 V* SY Cnc CV* 09 01 03.3195626400 +17 53 56.030744400   12.757 12.498 12.078   ?+M0-V 151 0
15 V* OY Car CV* 10 06 22.0793274312 -70 14 04.584660540           ~ 569 0
16 CRTS J100658.4+233724 CV* 10 06 58.4169543888 +23 37 24.466842948           D+M3e 28 0
17 V* CH UMa CV* 10 07 00.7217843640 +67 32 47.506618176   15.97       ~ 110 0
18 V* MM Vel HXB 10 13 36.4108035720 -45 04 32.553865524   14.84 14.71     G5V-M0V 198 0
19 V* SW Sex CV* 10 15 09.3769935988 -03 08 32.850732738           ~ 203 0
20 SDSS J103533.02+055158.4 CV* 10 35 33.0226966464 +05 51 58.334599512   18.57 18.80     DA 59 0
21 V* LY UMa CV* 10 48 18.0062358936 +52 18 29.798805024   16.5 14.95     K 33 0
22 V* V392 Hya CV* 10 58 56.4235808976 -29 14 40.763567580   16.38       ~ 19 0
23 V* KV UMa HXB 11 18 10.7930420496 +48 02 12.314730120     12.25     K5V-M1V 822 0
24 V* GU Mus HXB 11 26 26.5961559600 -68 40 32.877752952           K3V-K7V 715 1
25 V* TT Crt CV* 11 34 47.1765755496 -11 45 30.370189860   16.598 16.029 15.945   ~ 50 0
26 V* V1258 Cen CV* 13 00 29.0630127912 -30 52 56.960840244           ~ 24 0
27 V* BV Cen CV* 13 31 19.5105743208 -54 58 33.657394152     13.151 12.746 12.226 G5-8IV/V 189 0
28 CRTS J135716.8-093238 HXB 13 57 16.8357790008 -09 32 38.796487512           M4.5V 170 0
29 V* BW Cir HXB 13 58 09.700 -64 44 05.80 17.90 18.00 16.9     ~ 238 1
30 V* GY Hya CV* 14 30 30.4713679704 -25 52 37.987029660           K4 20 0
31 PM J14332+1011 CV* 14 33 17.7877088088 +10 11 23.484691356     18.86     ~ 54 0
32 V* V822 Cen LXB 14 58 21.9347842080 -31 40 07.515432768 11.95 12.85 12.8     K3-K7V 544 0
33 V* OV Boo CV* 15 07 22.3698571080 +52 30 39.804859764   18.7   18.5   DAe 72 0
34 V* V381 Nor HXB 15 50 58.6637920704 -56 28 35.258385000   17.95 16.6     K3III 1173 0
35 V* QZ Ser CV* 15 56 54.4738717848 +21 07 19.083494676           ?+K4Ve 55 0
36 V* AH Her CV* 16 44 10.0057431264 +25 15 01.942541352   12.44 12.71     K7V 236 0
37 [GHJ2008] 3 HXB 16 50 00.980 -49 57 43.60     11.89     K4V 398 0
38 V* V2107 Oph HXB 17 08 14.520 -25 05 30.15   16.50 15.9     K3V-K7V 226 1
39 V* V2051 Oph CV* 17 08 19.0873634976 -25 48 31.704262776   17.5       ~ 243 0
40 V* RY Ser CV* 17 23 07.1837977344 -12 48 09.736673544           ~ 23 0
41 V* AT Ara CV* 17 30 33.8219416224 -46 05 58.773466356   15.156 14.045 14.719   K2+ 39 0
42 V* EX Dra CV* 18 04 14.2486747659 +67 54 12.271788519   14.5 14.7     ~ 126 0
43 V* DQ Her CV* 18 07 30.2510391864 +45 51 32.564791872   14.605 14.443 14.800   M3+Ve 1012 1
44 V* V426 Oph CV* 18 07 51.6919772928 +05 51 47.804055084           ~ 170 0
45 V* V406 Vul HXB 18 58 41.580 +22 39 29.40 15.00 15.65 15.31     G5V-K0V 379 0
46 V* EM Cyg CV* 19 38 40.1068970904 +30 30 28.332591012     11.90     ~ 253 0
47 V* V2690 Cyg CV* 19 51 47.4966319272 +37 16 47.763588648   15.50       K7.5 13 0
48 V* EY Cyg CV* 19 54 36.7420149648 +32 21 55.087471404           sdBe+K0V 122 0
49 V* QZ Vul HXB 20 02 49.58 +25 14 11.3   19.64 18.2     K3V-K6V 421 0
50 V* WZ Sge CV* 20 07 36.5037622512 +17 42 14.733254952   15.30 15.20     DAepv 947 0
51 V* V404 Cyg HXB 20 24 03.8254458776 +33 52 01.962185735           G9/K0III/V 1277 0
52 SDSS J204448.92-045928.8 CV* 20 44 48.9225407448 -04 59 28.809306348           K4/5e 21 0
53 V* LZ Aqr LXB 21 23 14.54 -05 47 52.9 15.90 16.78 16.8     ~ 147 0
54 V* SS Cyg CV* 21 42 42.8034497592 +43 35 09.867842484 11.07 12.651 12.032 9.326   K5V 1290 1
55 V* RU Peg CV* 22 14 02.5505986656 +12 42 11.278107972     12     sdBe+G8IV:n 305 0
56 V* IP Peg CV* 23 23 08.5362249504 +18 24 59.206884012           M2 381 0
57 HS 2325+8205 CV* 23 26 50.2868902782 +82 22 11.273889268   15.57 14.58 15.25   ~ 10 1
58 V* DX And CV* 23 29 46.6838648136 +43 45 04.034136924           ~ 99 0
59 V* EI Psc CV* 23 29 54.2146447848 +06 28 11.596023228   16.86 16.22     ~ 130 0

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