2025AJ....169..128S


Query : 2025AJ....169..128S

2025AJ....169..128S - Astron. J., 169, 128 (2025/March-0)

An Investigation into the Variability of Luminous Blue Variable Stars with TESS.

SPEJCHER B., RICHARDSON N.D., PABLO H., BELTRAN M., BUTLER P. and AVILA E.

Abstract (from CDS):

Luminous blue variables (LBVs) are enigmatic, evolved, massive stars. Their variability has been observed to be episodic with large eruptions, along with variations on timescales of days to decades. We have extracted light curves of 37 LBVs from the first 4 yr of the TESS mission. These light curves provide two years of photometric time series for stars in the LMC, with several months of data for Galactic or SMC targets. We analyze the Fourier properties of the stellar light curves to determine their characteristic frequencies and red noise amplitudes, comparing them to mass-loss parameters through Hα strength, and in the case of the LMC stars, B - V color and luminosity as estimated by their apparent g magnitudes. We confirm the absence of correlation between any of the Fourier parameters and stellar parameters, implying that there is no trend in how these stars vary as measured with these photometric data, which may point toward these stars being an extension to the supergiant α Cygni variables and not a unique class of object with regards to their short-term variations.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Luminous blue variable stars - Early-type variable stars - S Doradus stars - Massive stars - Alpha Cygni variable stars

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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 HD 5980 WR* 00 59 26.5838833944 -72 09 53.927337312   11.13 11.31   11.029 WN4+O7I: 419 1
3 HD 6884 s*b 01 07 18.2182685856 -72 28 03.657105156   10.32 10.2     B9Ia0ek 134 0
4 HD 268835 s*b 04 56 47.0795205816 -69 50 24.769621212 10.21 10.77 10.63 10.72 10.16 B8[e] 119 0
5 HD 269006 s*b 05 02 07.3942092168 -71 20 13.116800076 9.93 10.60 10.55 10.43 10.38 LBV 261 0
6 HD 268939 s?b 05 04 14.9089614288 -67 15 05.254922232   11.07 11.03 11.12   B:Ie 44 0
7 LHA 120-S 18 Em* 05 05 53.9807954040 -68 10 50.543641524   12.06 11.903 12.01 11.821 B3Ie 27 0
8 HD 269050 s*b 05 07 20.4218668824 -68 32 08.569322196 10.593 11.581 11.54 11.46 11.55 B0Ia(e?) 89 0
9 HD 269128 s*b 05 10 22.7893360416 -68 46 23.816621928 9.77 10.52 10.412 10.29 10.268 B2.5Ieq 113 0
10 HD 269216 Em* 05 13 30.7805703864 -69 32 23.647476948 10.227 10.84 11.123 10.96 10.573 OBe 55 0
11 HD 34664 s*b 05 13 52.9937299920 -67 26 54.820789332 11.509 11.88 11.774 11.63 10.991 B0/0.5I[e] 103 0
12 HD 269321 s*b 05 17 56.0734487568 -69 16 03.809703252 10.28 10.93 10.84 10.53 10.342 B5Iae 73 0
13 V* S Dor sg* 05 18 14.3570612088 -69 15 01.149576912 9.08 10.39 10.25 9.74 9.14 Be3 395 0
14 HD 269445 WR* 05 22 59.7855849168 -68 01 46.635948408 10.79 11.77 11.520 11.41 10.979 Ofpe/WN9 137 0
15 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
16 HD 269582 WR* 05 27 52.6621673400 -68 59 08.488879836 12.206 10.818 11.093 12.70 11.234 WN10h 117 0
17 HD 269604 sg* 05 28 31.3672496208 -68 53 55.749735564   10.87 10.74     A1Ia0 44 0
18 HD 269662 sg* 05 30 51.4749432240 -69 02 58.590657600 10.23 10.52 10.28 10.40 10.390 A0Ia 113 0
19 HD 269687 WR* 05 31 25.5247745448 -69 05 38.556251700 10.86 11.78 11.87 12.05   WN11h 122 0
20 HD 269700 s*b 05 31 52.2818122296 -68 32 38.857949016 9.71 10.56 10.54 10.38 10.38 B1.5Iaeq 92 0
21 HD 37836 Em* 05 35 16.6328054594 -69 40 38.439367763 9.87 10.736 10.692 10.731 10.164 B0e(q) 92 0
22 HD 37974 s*b 05 36 25.8534763728 -69 22 55.789571064 10.056 11.12 10.99 11.00 10.423 B0.5e 132 0
23 HD 269859 s*b 05 36 47.1875018688 -69 29 52.090414152 9.940 10.761 10.730 11.06   B1Ia 56 1
24 CPD-69 463 s*y 05 38 51.6161224200 -69 08 07.314706104 11.93 12.45 12.014     F7Ia 97 1
25 HD 38489 s*b 05 40 13.3208083008 -69 22 46.485962112 11.236 12.295 11.93 11.79 10.891 B[e] 94 1
26 CPD-69 500 s*b 05 41 20.1251716560 -69 36 22.989236904 11.307 11.790 11.790   11.910 B4I-III 33 0
27 SK -69 279 s*b 05 41 44.6553703752 -69 35 14.905767516 12.079 12.787 12.842 13.03 12.619 ON9.5Ia+ 70 0
28 LHA 120-S 61 WR* 05 45 51.9388258704 -67 14 25.937264544 10.870 11.86 11.95 12.09 11.931 WN11h 100 0
29 HD 80077 s*b 09 15 54.7869062472 -49 58 24.575734452 10.50 10.29 9.00 7.89   B2.5Ia+ 156 0
30 HD 90177 s*b 10 22 53.8430096928 -59 37 28.363616256 9.16 9.66 8 8.15   LBV 342 0
31 * eta Car s*b 10 45 03.545808 -59 41 03.95124 6.37 7.03 6.48 6.123 4.41 LBV 2543 0
32 V* AG Car WR* 10 56 11.5781414448 -60 27 12.810673260 7.00 7.57 6.96 7.73   WN11h 649 0
33 MR 35 s*b 11 08 40.0634208096 -60 42 51.721320060   12.33 10.20 11.66   LBV 130 0
34 NAME Sher 25 star * 11 15 07.6447245696 -61 15 17.611428348   13.63 12.27     B1.5Iab 82 1
35 HD 148937 SB* 16 33 52.3869185520 -48 06 40.476418740 6.49 7.12 6.71 7.61   O6f?p 417 1
36 * 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
37 HD 326823 WR* 17 06 53.9045282184 -42 36 39.704037840 9.68 9.87 9.03 9.51   WNpec 83 1
38 HD 160529 s*b 17 41 59.0261939376 -33 30 13.704456780 8.17 7.87 6.66 5.50 4.51 B8-A9Ia+ 203 1
39 * 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
40 * alf Cyg sg* 20 41 25.91514 +45 16 49.2197 1.11 1.34 1.25 1.14 1.04 A2Ia 778 0
41 NAME Local Group GrG ~ ~           ~ 9325 0

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