2013A&A...551A.130S


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.22CET09:02:04

2013A&A...551A.130S - Astronomy and Astrophysics, volume 551A, 130-130 (2013/3-1)

Study of a sample of faint Be stars in the exofield of CoRoT. I. Spectroscopic characterization.

SEMAAN T., HUBERT A.M., ZOREC J., MARTAYAN C., FREMAT Y., GUTIERREZ-SOTO J. and FABREGAT J.

Abstract (from CDS):

Be stars are probably the most rapid rotators among stars in the main sequence (MS) and, as such, are excellent candidates to study the incidence of the rotation on the characteristics of their non-radial pulsations, as well as on their internal structure. Pulsations are also thought to be possible mechanisms that help the mass ejection needed to build up the circumstellar disks of Be stars. The purpose of this paper is to identify a number of faint Be stars observed with the CoRoT satellite and to determine their fundamental parameters, which will enable us to study their pulsation properties as a function of the location in the HR diagram and to search for correlations with the light outbursts, which are possibly produced by discrete mass ejections. We identified those objects in the exofields of CoRoT presenting the Be phenomenon using Hα surveys, as well as automated methods based on pulsation properties that we finally confirmed with FLAMES/GIRAFFE and X-shooter spectroscopic observations at VLT/ESO, and with near-IR photometry. The spectra were 1) corrected for the veiling effect, 2) treated with the GIRFIT code to determine apparent fundamental parameters, and 3) corrected with the FASTROT code for effects induced by the rapid rotation. A list of 41 Be star candidates were found from photometric and spectroscopic criteria. The spectral coverage useful for determining the fundamental parameters was obtained for only about half of them. We then spectroscopically identified 21 Be stars, two probable Be stars, and two B stars contaminated by the Sh 2-284 nebulosity. A short description of the spectral characteristics of each star is given. The fundamental parameters and, in particular, the rotation frequency νr (cycles per day) were all corrected for rotational effects at rotation rates ranging from Ω/Ωc=0.8 to 1.0. We have determined the positions of Be stars in the HR diagram and find two of them located beyond the MS phase. The well-determined fundamental parameters presented in this paper for a statistically reliable sample of Be stars will enable us in forthcoming papers to compare the properties of stars as pulsators either according to their location in different regions of the HR diagram or with those predicted from theory.

Abstract Copyright:

Journal keyword(s): stars: emission-line, Be - stars: early-type - stars: fundamental parameters - binaries: spectroscopic - stars: rotation - stars: oscillations

Simbad objects: 55

goto Full paper

goto View the reference in ADS

Number of rows : 55

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 663 OpC 01 46 09 +61 14.1   7.78 7.1     ~ 234 0
2 NGC 1220 OpC 03 11 41 +53 20.8     11.8     ~ 14 0
3 NAME Per Arm PoG 03 30 +45.0           ~ 1211 0
4 C 0627+029 OpC 06 30 30 +02 50.7   7.63 7.3     ~ 25 0
5 CoRoT 102595654 V* 06 41 19.2773835841 +00 56 59.157379110   14.42 13.81 13.599   B9III 4 0
6 CoRoT 102613778 Be? 06 41 45.4019062143 +00 14 36.074077656   16.136 15.432 15.373   G9IV 1 0
7 GSC 04799-00986 * 06 41 50.6391513811 -01 30 17.838805611   13.50 12.66 12.39   M1V 7 0
8 CoRoT 102638133 Be? 06 42 20.7803487996 +00 55 04.038468489   15.612 14.852 14.745   K0III 1 0
9 CoRoT 102640224 Be? 06 42 23.5204596968 -00 44 28.861205947     15.324 15.791   F8V 1 0
10 EM* RJHA 40 Be* 06 42 29.7796101993 +00 53 58.209374826   14.00 13.17 12.723   B3Ib 9 0
11 CoRoT 102649238 Be? 06 42 35.2244941125 +00 43 21.299710013   14.692 13.959 13.727   M1V 1 0
12 C 0640+000 OpC 06 42 38 +00 06.0           ~ 9 0
13 CoRoT 102656190 Be? 06 42 44.0977703465 -00 51 02.030706754   14.303 13.885 13.962   B2V 2 0
14 CoRoT 102667801 * 06 42 58.6719822485 -00 48 25.698557962   13.55 13.21 13.184   F3V 2 0
15 LS VI -01 6 Em* 06 43 05.1925641144 -01 23 04.098326556 11.93 11.77 11.34 11.45   B3IV 12 0
16 CoRoT 102675453 Be? 06 43 08.2108235155 +00 05 13.402374631   15.243 14.887 14.775   A9V 1 0
17 UCAC4 444-020704 Pu* 06 43 21.9733932414 -01 22 28.955469829   14.12 13.475 13.41   B3IV 5 0
18 CoRoT 102690931 * 06 43 27.5947315131 -00 27 48.190183548   14.38 14.06 14.13   F1V 2 0
19 CoRoT 102695055 Be? 06 43 32.6564344499 -01 03 20.545660921     13.367     M1V 2 0
20 CoRoT 102695698 * 06 43 33.4773212513 +00 23 20.443297177   14.20 13.88 13.97   F1III 2 0
21 CoRoT 102696078 Em* 06 43 33.9408243162 +00 57 04.622688624   13.12 12.80 12.835   F1V 5 0
22 CoRoT 102710394 * 06 43 51.8071503906 +00 37 13.593046045   15.13 14.48 14.41   G6II 2 0
23 CoRoT 102719279 V* 06 44 04.2566596209 -00 41 15.630310894   14.61 14.074 14.269   B1IV 6 0
24 CoRoT 102721109 Be? 06 44 06.9396609324 -01 01 38.485899616   16.768 15.505 15.39   M1V 1 0
25 CoRoT 102725623 V* 06 44 13.4275816012 -01 25 24.597311087   16.087 15.165 15.261   B7III 3 0
26 TYC 147-506-1 gD* 06 44 17.4900374694 +00 20 31.571428927   12.48 11.93 11.75   B1V 11 0
27 CoRoT 102736797 * 06 44 28.7984744411 +00 38 24.112057255   13.23 12.85 12.71   F5III 2 0
28 CoRoT 102737893 Be? 06 44 30.3247 +01 05 37.917   12.845 12.267 12.073   G6III 1 0
29 CoRoT 102749262 V* 06 44 45.4953894818 +00 19 02.653014228   16.512 15.864 15.909   G5IV 2 0
30 UCAC4 454-021836 * 06 44 45.6389897124 +00 46 58.017147783   14.59 14.120 14.08   F5V 3 0
31 EM* RJHA 50 Em* 06 45 02.3486673200 -01 50 08.505746366   13.62 13.06 13.23   B4V 7 0
32 UCAC4 448-022358 Be* 06 45 03.4408242848 -00 34 13.917133674   14.82 13.902 14.04   K3V 6 0
33 C 0642+003 OpC 06 45 06 +00 18.0   8.19 7.6     ~ 66 1
34 CoRoT 102766835 Be* 06 45 09.2771893414 -01 15 20.618545131   14.10 13.197 12.884   O9IV 12 0
35 CoRoT 102777669 Pu* 06 45 23.8819921063 +00 22 03.856917156     14.640     F9V 3 0
36 LBN 211.65-01.51 HII 06 45 28 +00 17.8           ~ 60 0
37 CoRoT 102781703 Be? 06 45 29.1675333010 +00 55 42.066239187   13.31 12.663 12.354   G8III 1 0
38 TYC 148-2254-1 gD* 06 45 33.7633657012 +00 20 09.968410097   12.57 12.04 11.96   M1V 11 0
39 CoRoT 102785480 Pu* 06 45 34.1531148979 +00 31 17.012921066   13.81 13.17 12.832   B2IV 8 0
40 CoRoT 102791482 Em* 06 45 42.4239101908 -01 40 48.577195675   13.75 13.04 12.793   G9III 5 0
41 CoRoT 102798228 * 06 45 53.8538013805 -02 54 20.593383483   15.969 15.307 15.328   ~ 1 0
42 CoRoT 102825808 * 06 46 43.7015826366 -01 04 28.296106524   15.14 14.49 14.42   B2V 3 0
43 CoRoT 102829773 * 06 46 50.4934926252 -03 07 58.414938127     15.211 14.814   B1V 2 0
44 CoRoT 102847615 Be? 06 47 18.8582600353 -01 10 29.847397640   14.508 13.873 13.773   B3V 2 0
45 NGC 2286 OpC 06 47 39 -03 09.3   8.16 7.5     ~ 38 0
46 HD 49330 Be* 06 47 57.2678873802 +00 46 34.039802717 8.45 9.14 8.95     Bnn(e) 68 0
47 CoRoT 102875251 Be? 06 47 58.1947342380 -00 37 27.102494803   15.339 14.799 14.732   G0V 1 0
48 CoRoT 102904910 Be? 06 48 37.4855 -00 56 20.508   14.467 14.019 13.941   B2V 2 0
49 CoRoT 102964342 * 06 49 49.7555065411 -02 53 21.278499207   15.187 14.57 14.41   ~ 1 0
50 NGC 2345 OpC 07 08 18 -13 11.6   8.58 7.7     ~ 51 0
51 UCAC2 32096953 Be? 19 29 03.1279172859 +00 32 57.347077723   12.58 12.23 12.39   B7V 4 0
52 Cl Berkeley 87 OpC 20 21 43.01 +37 22 13.8           ~ 105 0
53 NGC 7419 OpC 22 54 20 +60 48.9     13.0     ~ 82 0
54 NAME Local Arm reg ~ ~           ~ 352 0
55 NAME Norma-Cygnus Arm reg ~ ~           ~ 71 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2013A&A...551A.130S and select 'bookmark this link' or equivalent in the popup menu


2020.01.22-09:02:04

© Université de Strasbourg/CNRS

    • Contact