2023MNRAS.523.1676C


Query : 2023MNRAS.523.1676C

2023MNRAS.523.1676C - Mon. Not. R. Astron. Soc., 523, 1676-1698 (2023/August-1)

A small survey for massive stars in the LMC/SMC: binaries and pulsations.

CAKIRLI O., HOYMAN B. and OZDARCAN O.

Abstract (from CDS):

Binarity and pulsations are two notable properties that frequently appear together in massive stars. To place constraints on how binarity affects stellar evolution, the exact parameters of massive stars in binary systems must be known. Their exact and accurate masses and radii, which were calculated from binary dynamics, present model-independent restrictions and challenge existing theories of stellar evolution. In this investigation, our goal is to determine the atmospheric characteristics of nine double-lined spectroscopic binaries that are located in the Large Magellanic Cloud and Small Magellanic Cloud. Nine newly discovered double-lined eclipsing binaries with B-type massive components have been studied; these binaries were found using the OGLE variable star catalogues. The absolute physical parameters of each component have been measured with an accuracy of less than or equal to 3 per cent. By analysing through Transiting Exoplanet Survey Satellite data of the systems, we were able to identify five candidates for slowly pulsating B stars in massive binary systems with masses ranging from 2 to 25 M⊙. According to the results of the preliminary research, the orbital periods of these binary systems span anywhere from 1.8 to 6.3 d, whereas the pulsating periods range anywhere from 0.3 to 1.5 d. The achievement in identifying a significant number of pulsating eclipsing systems opens the door to the initial sensible approach of constraining the internal physics of a group of massive stars via asteroseismology of eclipsing binaries including such stars.

Abstract Copyright: © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): binaries: eclipsing - binaries: spectroscopic - stars: evolution - stars: fundamental parameters - stars: massive - stars: oscillations (including pulsations)

Simbad objects: 15

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Number of rows : 15
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 2dFS 498 EB* 00 44 08.6709754440 -73 14 18.374346168 13.25 14.08 13.86 14.50 14.38 B0(IV) 16 0
2 OGLE SMC100.6 15362 EB* 00 48 21.0409719216 -73 05 35.166133176     17.733   17.740 ~ 5 0
3 OGLE SMC100.3 1271 EB* 00 50 25.79 -73 06 53.3   17.74 17.74   17.64 ~ 6 0
4 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
5 OGLE SMC106.5 85 EB* 00 54 33.2195742600 -73 10 39.901701144   15.51 15.69 15.83 15.76 ~ 13 0
6 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
7 OGLE LMC-SC14 170190 EB* 05 04 08.8565163456 -68 55 11.772596280   16.60 16.693 16.79 16.730 ~ 8 0
8 OGLE LMC-SC14 230034 EB* 05 04 45.4517775288 -69 01 47.031714372     15.696 15.79 15.740 ~ 9 0
9 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
10 OGLE LMC-ECL-16675 SB* 05 28 23.9659101720 -69 12 26.191158156 12.633 13.624 13.756   13.879 B0.5:+B 7 0
11 OGLE LMC-ECL-17660 EB* 05 30 22.1254704720 -69 14 52.049892012   14.42 14.266 14.76 14.429 ~ 9 0
12 SK -68 120 SB* 05 32 47.7444874152 -68 37 26.557746168 12.123 13.204 13.416   13.435 O9.5III+B0: 10 0
13 * tau Sco * 16 35 52.9528530 -28 12 57.661515 1.55 2.56 2.81 2.93 3.18 B0V 959 0
14 V* V380 Cyg SB* 19 50 37.3267754400 +40 35 59.135141652 4.86 5.613 5.680     B1.1III+B2.5/3V: 305 0
15 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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