2021MNRAS.502.5038N

Query : 2021MNRAS.502.5038N

2021MNRAS.502.5038N - Mon. Not. R. Astron. Soc., 502, 5038-5048 (2021/April-3)

Red noise and pulsations in evolved massive stars.

NAZE Y., RAUW G. and GOSSET E.

Abstract (from CDS):

We examine high-cadence space photometry taken by the Transiting Exoplanet Survey Satellite (TESS) of a sample of evolved massive stars: 26 Wolf-Rayet stars (WRs) and eight luminous blue variables (LBVs) or candidate LBVs. To avoid confusion problems, only stars without bright Gaia neighbours and without evidence of bound companions are considered. This leads to a clean sample, the variability properties of which should truly reflect the properties of the WR and LBV classes. Red noise is detected in all cases and its fitting reveals characteristics very similar to those found for OB stars. Coherent variability is also detected for 20 per cent of the WR sample. Most detections occur at moderately high frequency (3-14 d–1), hence they are most probably linked to pulsational activity. This work doubles the number of WRs known to exhibit high-frequency signals.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): stars: early-type - stars: massive - stars: variables: general - stars: Wolf-Rayet

Simbad objects: 41

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Number of rows : 41
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 HD 4004 WR* 00 43 28.3971737448 +64 45 35.384652468 10.28 10.718 10.138     WN4-s 205 0
2 HD 9974 WR* 01 38 55.6274097096 +58 09 22.673806272 9.85 10.71 10.69     WN3h-w 173 0
3 HD 16523 WR* 02 41 11.6753354688 +56 43 49.735070148 10.03 10.025 9.881 9.901   WC6 138 0
4 HD 17638 WR* 02 52 11.6613087600 +56 56 07.131052500 10.99 10.86 10.41     WC6 121 0
5 HD 56925 WR* 07 18 29.1311435688 -13 13 01.513932528 11.21 11.74 11.56 11.40   WN4b 181 0
6 * zet Pup BY* 08 03 35.04754 -40 00 11.3321 0.89 1.98 2.25 2.36 2.58 O4I(n)fp 1190 1
7 HD 79573 WR* 09 13 11.7689184720 -50 06 25.523968608 12.30 11.80 10.69 10.52   WC6 87 0
8 HD 80077 s*b 09 15 54.7869062472 -49 58 24.575734452 10.50 10.29 9.00 7.89   B2.5Ia+ 156 0
9 HD 86161 WR* 09 54 52.9033957968 -57 43 38.274644604 7.94 8.65 8.36 8.93   WN8h 230 0
10 HD 88500 WR* 10 10 31.9110817968 -60 38 42.419780376   10.84 10.65 10.67   WC5 88 0
11 HD 92809 WR* 10 41 38.3243333544 -58 46 18.723223308 8.95 9.28 9.03 9.60   WC6 163 0
12 HD 93131 WR* 10 43 52.2579213120 -60 07 04.019676456 5.52 6.43 6.48 7.46   WN6ha-w 309 0
13 V* AG Car WR* 10 56 11.5781414448 -60 27 12.810673260 7.00 7.57 6.96 7.73   WN11h 649 0
14 HD 96548 WR* 11 06 17.2032351624 -65 30 35.241182028 7.10 7.80 7.70 8.49   WN8h 427 0
15 MR 35 s*b 11 08 40.0634208096 -60 42 51.721320060   12.33 10.20 11.66   LBV 130 0
16 HD 115473 WR* 13 18 27.9941240160 -58 08 13.603221168 9.09 9.68 9.00 9.72   WC5 119 0
17 HD 119078 WR* 13 43 16.3587374232 -67 24 04.973391360 9.11 9.737 9.40 10.08   WC7/8 110 0
18 HD 134877 WR* 15 14 57.7186057272 -59 50 30.215432688 12.13 12.19 11.34 11.08   WN8(h) 112 0
19 [GKF2010] MN48 LP* 16 49 37.7028749880 -45 35 59.233622064   17.64 15.83 13.82 10.82 ~ 13 0
20 HD 151932 WR* 16 52 19.2477039480 -41 51 16.270066224 6.06 6.79 6.51 7.64   WN7h 326 0
21 * zet01 Sco s*b 16 53 59.7271314888 -42 21 43.307334468 4.80 5.31 4.79 4.32 3.86 B1.5Ia+ 390 0
22 HD 152386 WR* 16 55 06.4499424072 -44 59 21.364771956 8.15 8.64 8.13 8.84   O6:Iafpe 88 0
23 MR 66 WR* 17 02 40.3826152512 -45 59 15.453237084   13.62 12.07 11.77   WC9 67 0
24 HD 326823 WR* 17 06 53.9045282184 -42 36 39.704037840 9.68 9.87 9.03 9.51   WNpec 83 1
25 THA 31-1 WR* 17 11 21.7008844704 -39 53 21.976096632   14.18 13.01 12.54   WN7 43 0
26 HD 157451 WR* 17 25 23.2779945960 -43 29 31.469964540 10 10.59 10.20 10.46   WC9 96 0
27 WRAY 15-1736 WR* 17 36 24.4548433392 -32 54 31.436538840   15.12 13.58 13.30 11.27 WC9 48 0
28 HD 164270 WR* 18 01 43.1453595672 -32 42 55.161329040 8.52 8.97 8.74 9.51   WC9d+? 233 0
29 HD 165688 WR* 18 07 56.9609461704 -19 23 56.863324824 10.46 10.31 9.87 9.85   WN5-6b 162 0
30 HD 168206 WR* 18 19 07.3629298440 -11 37 59.164994424 9.65 9.88 9.10     WC8+O8/9III/V 308 1
31 HD 177230 WR* 19 03 59.0233422072 -04 19 01.910240688 11.32 11.60 11.12     WN8 177 0
32 BD+14 3887 Em* 19 21 33.9771479376 +14 52 56.910478296 11.86 11.3 9.89     B3Ibe 99 0
33 EM* AS 374 WR* 19 59 12.5931809928 +31 27 09.025581132   13.57 12.13 11.52   WN8(h) 65 1
34 HD 191765 WR* 20 10 14.1928045152 +36 10 35.070683376 7.64 8.08 8.08     WN6-s 452 0
35 HD 192103 WR* 20 11 53.5274337792 +36 11 50.525765304 7.77 8.13 8.11     WC8+OB: 339 0
36 HD 192163 WR* 20 12 06.5418877464 +38 21 17.784181008 7.12 7.49 7.50     WN6(h)-s 715 1
37 WR 138a WR* 20 17 08.1192896544 +41 07 26.991896268   17.25 15.44     WN9h 15 0
38 * P Cyg s*b 20 17 47.2019733389 +38 01 58.549132671 4.66 5.24 4.82 4.28 4.02 B1-2Ia-0ep 1200 1
39 IRAS 20298+4011 LP? 20 31 42.2846664600 +40 21 59.074415640       15.384   B:I[e] 98 0
40 Schulte 12 s*b 20 32 40.9572199728 +41 14 29.279036940 16.1 14.45 11.702     B3-4Ia+ 453 0
41 HD 213049 WR* 22 27 17.8187635824 +56 15 11.770681752   11.270 10.928 10.922   WC6 93 0

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