2006A&A...460..783B


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.16CEST23:18:58

2006A&A...460..783B - Astronomy and Astrophysics, volume 460, 783-792 (2006/12-4)

Barnes-Evans relations for dwarfs with an application to the determination of distances to cataclysmic variables.

BEUERMANN K.

Abstract (from CDS):

Barnes-Evans type relations provide an empirical relationship between the surface brightness of stars and their color. They are widely used for measuring the distances to stars of known radii, as the Roche-lobe filling secondaries in cataclysmic variables (CVs). The calibration of the surface brightness of field dwarfs of near-solar metalicity with spectral types A0 to L8 covers all secondary spectral types detectable in CVs and related objects and will aid in the measurement of their distances. The calibrations are based on the radii of field dwarfs measured by the Infrared Flux Method and by interferometry. Published photometry is used and homogenized to the Cousins Rc and Ic and the CIT JHK photometric systems. The narrow band surface brightness at 7500Å is based on our own and published spectrophotometry. Care is taken to select the dwarfs for near-solar metalicity, appropriate to CVs, and to avoid errors caused by unrecognized binarity. Relations are provided for the surface brightness in V, Rc, Ic, J, H, K and in a narrow band at 7500Å as functions of V-K and of spectral type. The method is tested with selected CVs for which independent information on their distances is available. The observed spread in the radii of early M-dwarfs of given mass or luminosity and its influence on the distance measurements of CVs is discussed. As long as accurate trigonometric parallaxes are not routinely available for a large number of CVs, the surface brightness method remains a reliable means of determining distances to CVs in which a spectral signature of the secondary star can be discerned.

Abstract Copyright:

Journal keyword(s): stars: fundamental parameters - stars: distances - stars: dwarf novae - stars: novae, cataclysmic variables

VizieR on-line data: <Available at CDS (J/A+A/460/783): table2.dat>

CDS comments: Note 5 p.786 star T832-10443 not identified.

Simbad objects: 49

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Number of rows : 49

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* GX And Er* 00 18 22.8849667932 +44 01 22.637271919   10.120   7.3   M2V 469 0
2 G 272-61B Er* 01 39 01.6334059022 -17 57 01.121866655           M6V 800 0
3 2MASSW J0149090+295613 LM* 01 49 09.0007790598 +29 56 12.534059099           M9.5V 52 0
4 V* TZ Ari Er* 02 00 12.9561933930 +13 03 07.021294655 15.406 14.100 12.298 10.943 9.195 M4.5V 248 0
5 DENIS J020529.0-115925 BD* 02 05 29.40072 -11 59 29.6736           L7V 141 0
6 HD 16160 PM* 02 36 04.9023844802 +06 53 12.431588708   6.81   5.2   K3V 496 1
7 Cl* Melotte 22 KPNO 2 BD* 03 45 43.1604506693 +25 40 23.246972754         17.36 L0V 116 0
8 V* V471 Tau EB* 03 50 24.9664598642 +17 14 47.433240686   10.258 9.373   8.393 K2V+DA 623 0
9 V* V1005 Ori BY* 04 59 34.8341800543 +01 47 00.672080375   11.48 10.107 9.603 8.239 M0Ve 310 0
10 HD 36395 PM* 05 31 27.3958475290 -03 40 38.021551815 10.626 9.443 7.968 6.996 5.913 M1.5Ve 444 0
11 * alf CMa SB* 06 45 08.91728 -16 42 58.0171 -1.51 -1.46 -1.46 -1.46 -1.43 A0mA1Va 1424 0
12 V* QY Aur Er* 07 10 01.8338715851 +38 31 46.086394837   13.26 11.52 11.12   M4.5Ve 217 0
13 BD+05 1668 PM* 07 27 24.49975 +05 13 32.8332 12.558 11.443 9.872 8.699 7.161 M3.5V 353 0
14 V* YY Gem BY* 07 34 37.4475372002 +31 52 10.181030942 11.60 10.56 9.27 7.69 6.67 M0.5VeFe-2 827 0
15 LSPM J0746+2000 BD* 07 46 42.50553 +20 00 31.9757       17.9 15.034 L0+L1.5 173 1
16 V* U Gem CV* 07 55 05.2323858391 +22 00 05.045435077   15.3 14.54     DA 1054 0
17 V* Z Cha CV* 08 07 27.7421647579 -76 32 00.679589237   12.00       M5.5 592 1
18 G 51-15 Er* 08 29 49.3528237575 +26 46 33.626773321   16.87   14.736   M6.5Ve 259 0
19 V* CU Cnc Er* 08 31 37.5740891049 +19 23 39.398696822   12.83 11.809 11.592   M5Ve 204 0
20 2MASS J08503593+1057156 BD* 08 50 35.93400 +10 57 15.6168       22.466 20.349 L6.5+L8.5 69 0
21 HD 88230 Er* 10 11 22.1400209197 +49 27 15.249158750 9.23 7.94 6.61 5.36 4.56 K6VeFe-1 432 0
22 HD 95735 Er* 11 03 20.19400 +35 58 11.5682 10.030 8.960 7.520 5.99 4.79 M2+V 644 0
23 LP 732-94 LM* 11 21 49.1720839605 -13 13 08.728765179     19.57     M8.5V 125 0
24 DENIS J122815.2-154733 BD* 12 28 15.23184 -15 47 34.2312       20.187 18.163 L5.5+L5.5 137 0
25 Wolf 424 Er* 12 33 17.361480 +09 01 15.79224 15.398 14.313 12.467 10.937 8.988 M5.5V 303 0
26 NAME Kelu-1 BD* 13 05 40.1737206066 -25 41 05.830344467         16.85 L2+L3.5 239 0
27 BD+11 2576 PM* 13 29 59.7856884759 +10 22 37.784822214 11.728 10.524 9.029 8.07 7.013 M1.0Ve 210 0
28 V* V834 Cen CV* 14 09 07.2853539143 -45 17 16.015131476   16.0       M6.5 302 0
29 NAME Proxima Centauri Er* 14 29 42.9451234609 -62 40 46.170818907 14.21 12.95 11.13 9.45 7.41 M5.5Ve 1029 0
30 2MASS J14392836+1929149 BD* 14 39 28.36896 +19 29 14.9820           L1V 118 0
31 BD+16 2708B SB* 14 54 29.4185719182 +16 06 08.616294953           M8.5 132 0
32 V* GU Boo EB* 15 21 54.8242649848 +33 56 09.067728168     13.11     M0/M1.5 89 0
33 V* CM Dra BY* 16 34 20.3299130309 +57 09 44.365524588   14.50 12.87 10.85 9.26 M4.5V 410 0
34 EGGR 258 PM* 16 34 21.5517343404 +57 10 08.867977330   15.49   14.9   DQ8 111 0
35 Wolf 629 PM* 16 55 25.2215746210 -08 19 21.301127712 14.691 13.436 11.759 10.574 9.044 M3.5V 197 0
36 BD+68 946 PM* 17 36 25.8991699744 +68 20 20.904135942 11.73 10.65   8.3   M3.0V 258 0
37 NAME Barnard's star BY* 17 57 48.4997994034 +04 41 36.111354228 12.497 11.24 9.511 8.298 6.741 M4V 686 2
38 V* AM Her CV* 18 16 13.2546541781 +49 52 04.759861155     12.30     M4.5 919 0
39 * alf Lyr dS* 18 36 56.33635 +38 47 01.2802 0.03 0.03 0.03 0.07 0.10 A0Va 2541 0
40 HD 173739 PM* 18 42 46.7048533410 +59 37 49.411785651   10.782   8.1   M3V 340 1
41 HD 173740 PM* 18 42 46.8942178098 +59 37 36.723092516   11.705   8.9   M3.5V 298 1
42 HD 180617 Ro* 19 16 55.2565250393 +05 10 08.038856129 11.768 10.63 9.115 8.076 6.782 M3-V 365 0
43 * alf Aql dS* 19 50 46.99855 +08 52 05.9563 1.07 0.98 0.76 0.62 0.49 A7Vn 830 0
44 Wolf 922 Ro* 21 31 18.5690289199 -09 47 26.482273373 14.901 13.670 12.006 10.708 9.038 M4.5V 147 0
45 V* SS Cyg CV* 21 42 42.8034554117 +43 35 09.863763484 11.07 8.2 7.70     K5V 1224 1
46 V* RU Peg CV* 22 14 02.5507273174 +12 42 11.275480341     12     sdBe+G8IV:n 293 0
47 V* EZ Aqr Er* 22 38 33.576000 -15 17 59.75700 15.762 14.33 12.38 12.12 8.677 M5V 287 1
48 HD 216899 PM* 22 56 34.8047291749 +16 33 12.353727149 11.323 10.143 8.638 7.657 6.542 M1.5Ve 244 0
49 V* BR Psc BY* 23 49 12.5251391270 +02 24 04.403044891 11.532 10.427 8.993 8.029 6.946 dM1 291 0

    Equat.    Gal    SGal    Ecl

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2021.04.16-23:18:58

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