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WOH S264

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WOH S264

DSS2 image of WOH S264, the star can be seen in the centre.
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Dorado (LMC)
Right ascension  05h 24m 19.3095s[1]
Declination −69° 38′ 49.374″[1]
Apparent magnitude (V) 14.271[2]
Characteristics
Evolutionary stage Red supergiant
Spectral type M3 I[3]
Apparent magnitude (U) 19.519[4]
Apparent magnitude (B) 16.688[4]
Apparent magnitude (R) 11[4]
Apparent magnitude (G) 12.135779[5]
Apparent magnitude (I) 10.804[4]
Apparent magnitude (J) 8.36[4]
Apparent magnitude (H) 7.375[4]
Apparent magnitude (K) 6.809[4]
Astrometry
Radial velocity (Rv)263.49±1.02[6] km/s
Parallax (π)0.0457 ± 0.027[5] mas
Distance45,590[7] pc
Details
Mass24.9[8] M
Radius1,390+130
−110
[3] R
Luminosity282,000+49,300
−42,000
[3] L
Surface gravity (log g)+0.5±0.1[3] cgs
Temperature3,570+59
−46
[3] K
Other designations
WOH S264, LI-LMC 976, MSX LMC 461, RM 1-339, SP77 47-10[1]
Database references
SIMBADdata

WOH S264 ([W60] B90) is a large, highly luminous[3] red supergiant star in the Large Magellanic Cloud.

Discovery[edit]

WOH S264 was discovered in 1956 by Karl Gordon Henize in a catalogue of H-alpha emission stars and nebulae in the Large Magellanic Cloud. He designated it LHA 120-N 132E, indicating emission line nebula 132E on plate 120. The LHA is originally LHα, standing for H-alpha emission objects identified at the Lamont-Hussey Observatory.[9]

The designation WOH S264 indicates that it is supergiant 264 in a 1981 survey by Westerlund, Olander, and Hedin.[10]

Properties[edit]

WOH S264 is believed to be one of the largest, most luminous red supergiants in the Large Magellanic Cloud with a luminosity of more than 280,000 solar luminosities and a radius of around 1,390 solar radii.[3] It needs further investigation to constrain the luminosity and radius with higher certainty.[3]

See also[edit]

References[edit]

  1. 1.0 1.1 1.2 "[W60] B90". Université de Strasbourg.
  2. Ulaczyk, K.; Szymański, M. K.; Udalski, A.; Kubiak, M.; Pietrzyński, G.; Soszyński, I.; Wyrzykowski, Ł.; Poleski, R.; Gieren, W.; Walker, A. R.; Garcia-Varela, A. (20 June 2013). "Variable Stars from the OGLE-III Shallow Survey in the Large Magellanic Cloud". Acta Astronomica. 63 (2): 159–179. arXiv:1306.4802. Bibcode:2013AcA....63..159U.
  3. 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 de Wit, S.; Bonanos, A.Z.; Tramper, F.; Yang, M.; Maravelias, G.; Boutsia, K.; Britavskiy, N.; Zapartas, E. (2023). "Properties of luminous red supergiant stars in the Magellanic Clouds". Astronomy and Astrophysics. 669: 17. arXiv:2209.11239. Bibcode:2023A&A...669A..86D. doi:10.1051/0004-6361/202243394. Unknown parameter |s2cid= ignored (help)
  4. 4.0 4.1 4.2 4.3 4.4 4.5 4.6 Kamath, D.; Wood, P. R.; Van Winckel, H. (4 August 2015). "Optically visible post-AGB stars, post-RGB stars and young stellar objects in the Large Magellanic Cloud". The Royal Astronomical Society. 454 (2): 1468–1502. arXiv:1508.00670. Bibcode:2015MNRAS.454.1468K. doi:10.1093/mnras/stv1202.
  5. 5.0 5.1 Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. Unknown parameter |s2cid= ignored (help) Gaia EDR3 record for this source at VizieR.
  6. Vallenari, A.; et al. (Gaia Collaboration) (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. arXiv:2208.00211. doi:10.1051/0004-6361/202243940. Gaia DR3 record for this source at VizieR.
  7. Pietrzyński, G.; Graczyk, D.; Gallenne, A.; Gieren, W.; Thompson, I. B.; Pilecki, B.; Karczmarek, P.; Górski, M.; Suchomska, K.; Taormina, M.; Zgirski, B.; Wielgórski, P.; Kołaczkowski, Z.; Konorski, P.; Villanova, S.; Nardetto, N.; Kervella, P.; Bresolin, F.; Kudritzki, R. P.; Storm, J.; Smolec, R.; Narloch, W. (2019). "A distance to the Large Magellanic Cloud that is precise to one per cent". Nature. 567 (7747): 200–203. arXiv:1903.08096. Bibcode:2019Natur.567..200P. doi:10.1038/s41586-019-0999-4. PMID 30867610. Unknown parameter |s2cid= ignored (help)
  8. Ren, Yi; Jiang, Bi-Wei (2020-07-20). "On the Granulation and Irregular Variation of Red Supergiants". The Astrophysical Journal. 898 (1): 24. arXiv:2006.06605. Bibcode:2020ApJ...898...24R. doi:10.3847/1538-4357/ab9c17. ISSN 1538-4357.
  9. Henize, Karl G. (1956-05-05). "Catalogues of Hα-emission Stars and Nebulae in the Magellanic Clouds". Astrophysical Journal. 2: 315. Bibcode:1956ApJS....2..315H. doi:10.1086/190025.
  10. Westerlund, B. E.; Olander, N.; Hedin, B. (1981). "Supergiant and giant M type stars in the Large Magellanic Cloud". Astronomy & Astrophysics Supplement Series. 43: 267–295. Bibcode:1981A&AS...43..267W.

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