Messier 36
This cluster has an angular diameter of 10′ and a core radius of 3.2′. It has a mass of roughly 746 M☉ and a linear tidal radius of 10.6 ± 1.6 parsecs (34.6 ± 5.2 ly). Based upon photometry, the age of the cluster has been estimated by Wu et al. (2009) as 25.1 Myr and 26.3+3.2
−5.2 Myr by Bell et al. (2013). The luminosity of the stars that have not yet depleted their lithium implies an age of 22±4 Myr, in good agreement with these older estimates.
M36 includes ten stars with a visual magnitude brighter than 10, and 178 down to magnitude 14. 38 members display an infrared excess, with one being particularly high. There is one candidate B-type variable star, of 9th magnitude.
A 2020 study of the variable stars in the cluster estimated a new closer distance of 3,800 light years from Earth.
A young stellar object with an outflow, associated with the infrared source IRAS 05327+3404 was discovered in optical observations of M36. The outflow is nicknamed "Holoea", Hawaiian for "flowing gas". Despite appearing close to M36 it is probably not a part of M36 .It may be a member of the more distant S235 region. The young star driving the outflow was classified as transitional between class I and class II and appears to be surrounded by large amounts of circumstellar material.
Map
See also
References
- ^ Wu, Zhen-Yu; et al. (November 2009), "The orbits of open clusters in the Galaxy", Monthly Notices of the Royal Astronomical Society, 399 (4): 2146–2164, arXiv:0909.3737, Bibcode:2009MNRAS.399.2146W, doi:10.1111/j.1365-2966.2009.15416.x, S2CID 6066790.
- ^ "Messier 36". SEDS Messier Catalog. Retrieved 23 July 2024.
- ^ Piskunov, A. E.; et al. (January 2008), "Tidal radii and masses of open clusters", Astronomy and Astrophysics, 477 (1): 165–172, Bibcode:2008A&A...477..165P, doi:10.1051/0004-6361:20078525.
- ^ "M 36". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved November 22, 2018.
- ^ Fodera-Serio, G.; et al. (February 1985), "Hodierna's Observations of Nebulae and his Cosmology", Journal for the History of Astronomy, 16 (1): 1, Bibcode:1985JHA....16....1F, doi:10.1177/002182868501600101.
- ^ Stoyan, Ronald; et al. (2008), Atlas of the Messier Objects: Highlights of the Deep Sky, translated by Schroeder, Klaus-Peter, Cambridge University Press, pp. 530–533, ISBN 978-1139473118
- ^ Frommert, Hartmut; Kronberg, Christine (August 25, 2007), "Messier 36", The Messier Catalog, Students for the Exploration and Development of Space (SEDS), retrieved 2018-11-24.
- ^ Sanner, J.; et al. (May 2000), "Photometric and kinematic studies of open star clusters. II. NGC 1960 (M 36) and NGC 2194", Astronomy and Astrophysics, 357: 471–483, arXiv:astro-ph/0003327, Bibcode:2000A&A...357..471S.
- ^ Jeffries, R. D.; et al. (September 2013), "A lithium depletion boundary age of 22 Myr for NGC 1960", Monthly Notices of the Royal Astronomical Society, 434 (3): 2438–2450, arXiv:1306.6339, Bibcode:2013MNRAS.434.2438J, doi:10.1093/mnras/stt1180.
- ^ Smith, R.; Jeffries, R. D. (March 2012), "Dust discs around intermediate-mass and Sun-like stars in the 16 Myr old NGC 1960 open cluster", Monthly Notices of the Royal Astronomical Society, 420 (4): 2884–2898, arXiv:1110.4219, Bibcode:2012MNRAS.420.2884S, doi:10.1111/j.1365-2966.2011.20032.x, S2CID 119188688.
- ^ Delgado, A. J.; et al. (October 1984), "Search for B-Type Variable Stars in Open Clusters", Information Bulletin on Variable Stars, 2603: 1, Bibcode:1984IBVS.2603....1D.
- ^ Nowakowski, Tomasz (21 January 2023). "Astronomers perform a comprehensive study of young open cluster NGC 1960". Phys.org. Retrieved 28 June 2023.
- ^ Morata, O.; Kuan, Y. -J.; Ho, P. T. P.; Huang, H. -C.; Magnier, E. A.; Zhao-Geisler, R. (2013-09-01). "Millimetric and Submillimetric Observations of IRAS 05327+3404 "Holoea" in M36". The Astronomical Journal. 146 (3): 49. arXiv:1305.6550. Bibcode:2013AJ....146...49M. doi:10.1088/0004-6256/146/3/49. ISSN 0004-6256.
External links
- Messier 36, SEDS Messier pages
- Messier 36 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images