1997A&A...326.1044J

Query : 1997A&A...326.1044J

1997A&A...326.1044J - Astronomy and Astrophysics, volume 3261044-1054 (1997/10-3)

Photometric versus empirical surface gravities of eclipsing binaries.

JORDI C., RIBAS I., TORRA J. and GIMENEZ A.

Abstract (from CDS):

Systematic differences in photometric stellar surface gravity determination are studied by means of the comparison with empirical values derived from detached double-lined eclipsing binaries. Photometric gravities were computed using Moon & Dworetsky (1985MNRAS.217..305M) grids based on Kurucz (1979ApJS...40....1K) atmosphere models, and empirical gravities were taken from Andersen (1991A&ARv...3...91A). Individual Stroemgren colours and β indices of each component of the binary system have to be taken into account to correctly analyze the observed differences. A compilation of data on a sample containing 30 detached double-lined eclipsing binaries with accurate (≃1-2%) determination of mass and radius and available uvbyHβ photometric data is also presented. Correction of the differences in terms of Teff and logg for the range 11000K<Teff<20000K reduces the mean residuals from 0.13dex to 0.07dex. For the range 7000K<Teff<8500K, the consideration of metallicity effects by means of δmo index improves the accuracy from 0.20dex to 0.09dex.

Abstract Copyright: ∼

Journal keyword(s): stars: fundamental parameters - stars: binaries: eclipsing - stars: early-type - stars: late-type

VizieR on-line data: <Available at CDS (J/A+A/326/1044): table5>

Simbad objects: 36

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Number of rows : 36
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 * 21 Cas SB* 00 45 39.0765692400 +74 59 17.054172672   5.717 5.652     A2IV 222 0
2 * 23 Cas SB* 00 47 46.0538925192 +74 50 51.251241300   5.338 5.413     B8III 83 0
3 HD 5313 * 00 57 17.4019246728 +77 28 15.480948612   8.34 8.04     A3 20 0
4 * zet Phe SB* 01 08 23.0805843521 -55 14 44.736015873   3.908 4.014     B6V+B9V 243 0
5 V* AI Phe SB* 01 09 34.1924055096 -46 15 56.071719360   9.26 8.60     F7V+K0IV 157 0
6 V* IQ Per SB* 03 59 44.6764997640 +48 09 04.487282712   7.77 7.73     B9 162 0
7 HD 24980 SB* 04 00 20.4701283600 +47 34 18.039786528   8.56 8.36     A2 31 0
8 HD 25319 * 04 03 31.9021907184 +48 33 51.239006208   9.12 8.82     A5 8 0
9 * 17 Aur SB* 05 18 18.8960529504 +33 46 02.516925540   6.102 6.144     B9V+B9.5V 308 0
10 V* UX Men SB* 05 30 03.1855215048 -76 14 55.350331296   8.80 8.24   7.608 F8V 129 0
11 * 31 Men SB* 05 30 13.8827476176 -84 47 06.365764140   6.169 6.186     B9.5IV/V 138 0
12 HD 38735 SB* 05 47 26.8930346587 -10 31 58.690687745   6.23 6.09     A2IV 123 0
13 * bet Aur SB* 05 59 31.7229284 +44 56 50.757259 1.97 1.93 1.90 1.82 1.83 A1IV-Vp 433 1
14 V* GZ CMa SB* 07 16 19.2051179904 -16 43 00.074716140   8.14 7.98     A0III/IV 73 0
15 * 2 Pup B SB* 07 45 28.7368972272 -14 41 10.186320948   7.15 6.932     A0/1V 96 0
16 V* AI Hya EB* 08 18 47.4972221712 +00 17 00.612058128   9.77 9.35     F2m+F0V 119 0
17 V* V596 Pup SB* 08 27 33.2749537514 -20 50 38.246097199   6.63 6.59     A1V 123 1
18 * 9 Cha SB* 08 43 12.1984130688 -79 04 12.368512452   6.28 6.07     A7V 242 0
19 V* CV Vel SB* 09 00 37.9905129264 -51 33 20.066036652 5.88 6.55 6.69     B2V 158 0
20 * 21 Hya SB* 09 12 26.0504794680 -07 06 35.299400796   6.328 6.098     A0mA5/7-F0 131 0
21 * 163 Car SB* 09 54 33.8842758792 -58 25 16.579713612 5.6 6.47 6.64     B2V 128 0
22 V* RZ Cha SB* 10 42 24.1088348064 -82 02 14.183233152   8.54 8.09     F3/5V 109 0
23 * chi02 Hya SB* 11 05 57.5699938080 -27 17 16.272708396   5.64 5.71     B8V 119 0
24 V* EM Car SB* 11 12 04.5060592584 -61 05 42.944560584 8.06 8.80 8.54 9.25   O7.5V((f))+O7.5V((f)) 172 0
25 V* SZ Cen SB* 13 50 35.0928355776 -58 29 57.097515840   8.89 8.59     A6III 106 0
26 V* DM Vir SB* 14 07 52.4283264888 -11 09 07.472310912   9.25 8.79     F5V 100 0
27 V* GG Lup SB* 15 18 56.3746551072 -40 47 17.596548564   5.495 5.604 5.613   B7V 146 0
28 V* V760 Sco SB* 16 24 43.7182304928 -34 53 37.529154204   7.16 7.05     B4V 176 0
29 V* V539 Ara SB* 17 50 28.3930000656 -53 36 44.664776352   5.60 5.71     B2/3Vnn 190 0
30 HD 163708 SB* 17 59 13.4703104784 -36 56 19.839700356   7.155 7.089 8.09   A3III 122 0
31 V* V451 Oph SB* 18 29 14.0426779320 +10 53 31.429623012   7.95 7.91     A0IV 167 0
32 HD 212042 * 22 19 31.5694419192 +64 47 18.608828424   7.67 7.38     A5 20 0
33 V* BW Aqr SB* 22 23 15.9305850720 -15 19 56.201783268   10.8 10.3     F7 114 0
34 HD 213187 PM* 22 27 56.0996369352 +63 57 10.116439884   8.17 7.97     A3 9 0
35 V* WX Cep SB* 22 31 15.7881709512 +63 31 21.554196312   9.38 9.00     A5V+A2V 112 0
36 HD 218066 Be* 23 04 02.2270838832 +63 23 48.722060508 7.50 7.97 7.6     B1.5Vn 290 0

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