2006A&A...455.1037L


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.26CET16:50:21

2006A&A...455.1037L - Astronomy and Astrophysics, volume 455, 1037-1052 (2006/9-1)

Properties and nature of Be stars. 24. Better data and model for the Be+F binary V360 Lacertae.

LINNELL A.P., HARMANEC P., KOUBSKY P., BOZIC H., YANG S., RUZDJAK D., SUDAR D., LIBICH J., EENENS P., KRPATA J., WOLF M., SKODA P. and SLECHTA M.

Abstract (from CDS):

We include existing photometric and spectroscopic material with new observations in a detailed study of the Be+F binary V360 Lac. We used the programs FOTEL and KOREL to derive an improved linear ephemeris and to disentangle the line profiles of both binary components and telluric lines. The BINSYN software suite (described in the paper) is used to calculate synthetic light curves and spectra to fit the UBV photometry, an IUE spectrum, blue and red ground-based spectra, and observed radial-velocity curves. The observations provide evidence of circumstellar matter in the system. The system model shows that the Be primary star is critically rotating, and that the synchronously rotating secondary star fills its Roche lobe. The primary star has a mass of 7.45M. Radial-velocity observations establish a mass ratio of 0.163. Light curve synthesis demonstrates that the observed light curves are controlled largely by tidal distortion and irradiation of the massive primary by the less massive secondary. Synthetic spectra fit both blue and red observed spectra with the exception of spectral lines affected by circumstellar matter in the system. The synthetic spectra allow for gravity darkening and are consistent with critical rotation of the primary. Synthetic spectrum fits to a dereddened IUE spectrum produce a calculated system distance of 512pc. This distance is 2σ beyond the Hipparcos distance.

Abstract Copyright:

Journal keyword(s): stars: emission-line, Be - binaries: close - binaries: spectroscopic - stars: fundamental parameters - stars: individual: V360 Lac

VizieR on-line data: <Available at CDS (J/A+A/455/1037): table3.dat>

Simbad objects: 12

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Number of rows : 12

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 * gam Cas Be* 00 56 42.5317 +60 43 00.265 1.18 2.29 2.39 2.32 2.40 B0.5IVpe 1148 2
2 * phi Per Be* 01 43 39.6379209 +50 41 19.432832 3.10 4.02 4.06 3.90 3.88 B1.5V:e-shell 538 0
3 * 4 Her Be* 15 55 30.5918031179 +42 33 58.287739693 5.23 5.64 5.75   5.82 B9pe 170 0
4 * z Her Be* 17 50 03.3350227341 +48 23 38.946882803 6.380 6.790 6.890     B6IIInp_sh 151 0
5 V* RZ Sct Al* 18 26 33.5234774335 -09 12 05.988849324 8.09 8.24 7.53     B2/3Ib/II 163 0
6 HD 174237 Be* 18 46 43.0889592280 +52 59 16.650319177 5.06 5.80 5.90     B3+F5III 195 0
7 * f01 Cyg Be* 20 59 49.5516391039 +47 31 15.378902421 3.77 4.71 4.75 4.62 4.63 B1.5Vnne 469 0
8 * 10 Lac ** 22 39 15.6786372 +39 03 00.971152 3.650 4.670 4.880 4.98 5.19 O9V 722 0
9 * 14 Lac bL* 22 50 21.7772135639 +41 57 12.179527815 5.49 5.961 5.910     B4+F9III 140 0
10 * 16 Lac bC* 22 56 23.6292923788 +41 36 13.948197878 4.61 5.436 5.587     B2IV 299 0
11 HD 217101 * 22 57 40.7376761458 +39 18 31.584372211 5.23 6.03 6.18     B2IV-V 112 0
12 * 2 And ** 23 02 36.38176 +42 45 28.0628           A1V 160 0

    Equat.    Gal    SGal    Ecl

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2021.02.26-16:50:22

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