2019ApJ...873...91G


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.19CEST20:24:44

2019ApJ...873...91G - Astrophys. J., 873, 91-91 (2019/March-1)

Angular sizes, radii, and effective temperatures of B-type stars from optical Interferometry with the CHARA Array.

GORDON K.D., GIES D.R., SCHAEFER G.H., HUBER D. and IRELAND M.

Abstract (from CDS):

We present interferometric observations of 25 spectral type-B stars that were made with the Precision Astronomical Visible Observations and the CLassic Interferometry with Multiple Baselines beam combiners at the Center for High Angular Resolution Astronomy Array (CHARA). The observations provide the angular sizes of these stars with an average error of 6%. The stars range in size from 1.09 mas for β Tau down to 0.20 mas for 32 Ori. We collected ultraviolet to infrared spectrophotometry and derived temperatures, angular diameters, and reddening estimates that best fit the spectra, as well as solutions with the angular size fixed by the interferometric measurements. There is generally good agreement between the observed and spectral fit angular diameters, indicating that the fluxes predicted from model atmospheres are reliable. On the other hand, the temperatures derived from angular diameters and fluxes tend to be larger (by ≃4%) than those from published results based on analysis of the line spectrum. This discrepancy may in part be attributed to unexplored atmospheric parameters or the existence of unknown companions. The physical radii of the stars are calculated from the angular diameters and Gaia DR2 parallaxes, and the target stars are placed in the Hertzsprung-Russell diagram for comparison with evolutionary tracks.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): stars: early-type - stars: fundamental parameters - stars: massive - techniques: interferometric

Status in Simbad:  waiting for electronic table

Simbad objects: 80

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Number of rows : 80

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 HD 1279 * 00 17 09.0437393806 +47 56 50.659653278 5.36 5.764 5.852     B8III 52 0
2 * lam Cas ** 00 31 46.3593467 +54 31 20.225689       6.25   B8Vn 131 0
3 * zet Cas Pu* 00 36 58.2841866 +53 53 48.867311 2.58 3.47 3.66 3.74 3.95 B2IV 417 0
4 HD 4142 * 00 44 26.1908781086 +47 51 50.333752788   5.520 5.648     B5V 100 0
5 * 4 Ari PM* 01 48 10.9213748577 +16 57 19.848252353   5.809 5.841     B9.5V 72 0
6 * gam02 Ari PM* 01 53 31.814 +19 17 37.87   4.49 4.52     A2IVpSiSrCr 151 0
7 * gam Ari a2* 01 53 31.81479 +19 17 37.8790           kA0hA3(IV)SiSr+B9.5IV 49 0
8 * gam01 Ari PM* 01 53 31.8192032943 +19 17 45.430793660   4.558 4.589 6.71   A0Vnp_lB 77 0
9 HD 14262 * 02 18 57.9438649247 +23 10 04.150711602   6.794 6.441     A9V+F/G 41 0
10 * ksi02 Cet * 02 28 09.5570589539 +08 27 36.216809306 4.14 4.25 4.30 4.29 4.34 B9III 304 0
11 HD 15633 PM* 02 30 45.2036715895 +00 15 20.705228736   6.169 5.990     A3V 28 0
12 * omi Ari * 02 44 32.9717935247 +15 18 42.708343583   5.750 5.777     B9Vn 44 0
13 HD 18216 * 02 55 31.5654803612 +02 01 05.769591993   6.548 6.583     B9V 17 0
14 HD 19600 PM* 03 10 08.8393698592 +27 49 11.158125575   6.427 6.412     A0V 48 0
15 * 17 Tau Be* 03 44 52.5368818 +24 06 48.011217 3.19 3.59 3.70 3.71 3.80 B6IIIe 370 1
16 * q Tau * 03 45 12.4957802 +24 28 02.209730 3.73 4.19 4.30 4.30 4.40 B6IV 256 0
17 * 20 Tau PM* 03 45 49.6065620 +24 22 03.886360 3.40 3.80 3.87 3.85 3.90 B8III 395 1
18 Cl Melotte 22 OpC 03 47 00 +24 07.0           ~ 2908 0
19 HD 23753 PM* 03 48 20.8170156737 +23 25 16.500644980 5.06 5.38 5.45 5.42 5.48 B8V 155 0
20 * 27 Tau SB* 03 49 09.7425852 +24 03 12.300277 3.18 3.54 3.63 3.62 3.68 B8III 359 0
21 HD 23923 * 03 49 43.5314145097 +23 42 42.671221706   6.104 6.153   6.18 B8V 134 0
22 * 56 Tau a2* 04 19 36.7050073648 +21 46 24.576627150   5.231 5.346     A0VpSi 171 0
23 * tau Tau SB* 04 42 14.6926362488 +22 57 24.894510556   4.138 4.258     B3V 179 0
24 * bet Ori s*b 05 14 32.27210 -08 12 05.8981 -0.56 0.10 0.13 0.13 0.15 B8Iae 725 0
25 * bet Tau PM* 05 26 17.51312 +28 36 26.8262 1.03 1.52 1.65 1.66 1.76 B7III 346 1
26 HD 35600 * 05 27 08.2722699487 +30 12 30.969383248 5.56 5.861 5.720     B9Ib 74 0
27 * 32 Ori ** 05 30 47.05091 +05 56 53.2925 3.51 4.07 4.20 4.26 4.40 B5V 176 0
28 * chi Aur SB* 05 32 43.6731178 +32 11 31.275310 4.68 5.15 4.79 4.42 4.15 B4Ib 201 0
29 * 35 Ori * 05 33 54.2872065041 +14 18 20.086647504   5.465 5.593     B3V 60 0
30 Ass Ori OB 1b As* 05 34.0 -01 30           ~ 229 0
31 Cl Collinder 69 OpC 05 35 06 +09 56.0     2.8     ~ 214 0
32 * lam Ori A Em* 05 35 08.277 +09 56 02.96 2.17 3.48 3.47     O8III((f)) 481 0
33 * lam Ori ** 05 35 08.27761 +09 56 02.9611 2.45 3.48 3.66 3.72 3.89 O8IIIf+B0.5V 261 1
34 * zet Ori A ** 05 40 45.527 -01 56 33.26 0.50 1.77 1.88 1.84 2.04 O9.2IbvarNwk 641 0
35 * alf Leo PM* 10 08 22.31099 +11 58 01.9516 0.88 1.24 1.40 1.37 1.47 B8IVn 799 1
36 * p05 Leo * 11 13 45.5531733923 -00 04 10.208991760   5.374 5.404     A0V 67 0
37 * sig Leo PM* 11 21 08.1934932 +06 01 45.570945   3.984 4.040     B9.5Vs 129 0
38 * 82 UMa PM* 13 39 30.4483768579 +52 55 16.345001165   5.568 5.456     A2Vnp 46 0
39 HD 119124 PM* 13 40 23.2323586063 +50 31 09.896167059 6.830 6.840 6.320     F7.7V 93 0
40 * eta UMa PM* 13 47 32.43776 +49 18 47.7602 0.99 1.67 1.86 1.98 2.16 B3V 577 0
41 * tau Her ** 16 19 44.43666 +46 18 48.1123 3.190 3.750 3.900 4.00 4.16 B5IV 383 1
42 * 15 Dra * 16 27 59.0160285398 +68 46 05.305188356 4.84 4.906 4.949     B9.5IV 82 0
43 * 34 Her PM* 16 30 06.0328121434 +48 57 39.881261029   6.457 6.427     A1V 31 0
44 HD 149650 * 16 32 25.6789466521 +60 49 23.886004061 6.010 5.950 5.910     A2V 47 0
45 * zet Dra ** 17 08 47.1959624 +65 42 52.863384 2.63 3.06 3.17 3.23 3.35 B6III 209 0
46 HD 156295 PM* 17 12 32.5810892862 +62 52 27.593572860   5.737 5.540     A7V 44 0
47 * iot Her bC* 17 39 27.8860861 +46 00 22.800110 2.940 3.630 3.800     B3IV 427 1
48 HD 161693 * 17 43 59.1704857171 +53 48 06.163729909 5.780 5.770 5.760     A2V 50 0
49 HD 167965 * 18 15 38.7772216860 +42 09 33.643941549 4.98 5.434 5.556     B7IV 59 0
50 * 61 Ser * 18 31 56.9934603664 -01 00 10.708368257   6.080 5.936     A5IV/V 32 0
51 HD 171301 * 18 32 49.9578179417 +30 33 15.148528750 4.93 5.381 5.468     B8IV 48 1
52 * gam Lyr * 18 58 56.6224137 +32 41 22.400295 3.140 3.200 3.250 3.27 3.28 B9III 265 0
53 * lam Aql PM* 19 06 14.9397099975 -04 52 57.231496924 3.07 3.34 3.43 3.46 3.55 B8.5V 205 0
54 HD 178187 PM* 19 06 38.3963338285 +24 15 02.815287606 6.000 5.890 5.790     A4III 42 0
55 HD 180782 * 19 17 48.1919722205 +02 01 54.244559010   6.195 6.174     A0V 30 0
56 * d Aql * 19 20 35.6861889272 -00 53 31.783617753 5.22 5.408 5.451     B9III 47 0
57 * iot Aql * 19 36 43.2774420564 -01 17 11.784474592 3.84 4.28 4.36 4.34 4.42 B5III 155 0
58 * del Cyg PM* 19 44 58.4785413 +45 07 50.916066 2.75 2.85 2.87 2.88 2.90 A0IV 275 0
59 * 30 Cyg V* 20 13 18.0527162012 +46 48 56.409650765   4.911 4.819     A5IIIn 61 0
60 HD 194012 PM* 20 22 52.3693290617 +14 33 03.946961940   6.635 6.152     F7V 100 1
61 * ome01 Cyg Pu* 20 30 03.5396830449 +48 57 05.637785409 4.23 4.835 4.936     B2.5IV 103 2
62 * 29 Vul PM* 20 38 31.3290367573 +21 12 04.376310503 4.73 4.80 4.82 4.79 4.83 A0Va(_sh) 117 0
63 * 28 Vul * 20 38 31.9139376202 +24 06 57.443309622 4.35 4.915 5.049     B5IV 84 0
64 * alf Del ** 20 39 38.2872009 +15 54 43.463736 3.550 3.740 3.800 3.77 3.81 B9IV 269 0
65 HD 197076 PM* 20 40 45.1407864181 +19 56 07.928511642 7.14 7.06 6.44 5.95 5.61 G5V 215 0
66 HD 197392 * 20 41 56.5018146928 +41 43 00.743088455   5.550 5.664     B8II-III 53 0
67 * 55 Cyg s*b 20 48 56.2911163453 +46 06 50.883966851 4.83 5.28 4.86 4.41 4.10 B4Ia 469 0
68 HD 203245 * 21 19 28.7504084346 +49 30 37.062759934 5.11 5.61 5.74     B6V 63 0
69 * 7 Cep * 21 27 46.1414392791 +66 48 32.740577662   5.299 5.410     B7V 47 0
70 * bet Cep bC* 21 28 39.5968513 +70 33 38.574681 2.05 3.01 3.23 3.33 3.55 B0.5IIIs 677 0
71 HD 207636 * 21 47 00.8500914577 +70 09 03.174840455 6.420 6.440 6.450     A0V 30 0
72 * 42 Peg PM* 22 41 27.7207176 +10 49 52.907917 3.10 3.33 3.41 3.43 3.50 B8V 281 0
73 * rho Peg PM* 22 55 13.6670582219 +08 48 58.238700099 4.90 4.90 4.90 4.86 4.88 A1V 111 0
74 * bet Psc Be* 23 03 52.6134921 +03 49 12.166213 3.90 4.40 4.52 4.54 4.67 B6Ve 232 0
75 * alf Peg PM* 23 04 45.65345 +15 12 18.9617 2.38 2.44 2.48 2.47 2.50 B9III 340 0
76 * 58 Peg * 23 10 01.4615898516 +09 49 19.490469906 5.02 5.304 5.386     B9III 54 0
77 * 59 Peg * 23 11 44.1900351869 +08 43 12.407618244   5.270 5.154     A5Vn 67 0
78 * kap And PM* 23 40 24.5076320 +44 20 02.156595 3.80 4.06 4.14 4.15 4.22 A0V 172 1
79 * ome02 Aqr PM* 23 42 43.3447268 -14 32 41.652314   4.448 4.484     B9V 131 0
80 * i01 Aqr * 23 44 12.0785220231 -18 16 36.999934132   5.152 5.239     B9V 83 0

    Equat.    Gal    SGal    Ecl

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2019.10.19-20:24:44

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