Messier 36: Difference between revisions

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	M36 includes ten stars with a visual magnitude brighter than 10,<ref name=Jeffries2013/> and 178 down to magnitude 14.<ref name=Sanner2000/> 38 members display an ], with one being particularly high.<ref name=Smith2012/> There is one candidate ] ], of 9th magnitude.<ref name=Delgado1984/>		M36 includes ten stars with a visual magnitude brighter than 10,<ref name=Jeffries2013/> and 178 down to magnitude 14.<ref name=Sanner2000/> 38 members display an ], with one being particularly high.<ref name=Smith2012/> There is one candidate ] ], of 9th magnitude.<ref name=Delgado1984/>

			A 2020 study of the variable stars in the cluster estimated a new closer distance of 3,800 light years from Earth.<ref>{{cite news \|url=https://phys.org/news/2020-01-astronomers-comprehensive-young-cluster-ngc.html \|title=Astronomers perform a comprehensive study of young open cluster NGC 1960 \|last1=Nowakowski \|first1=Tomasz \|date=21 January 2023 \|publisher=Phys.org \|accessdate=28 June 2023}}</ref>

	==Map==		==Map==

Revision as of 00:53, 29 June 2023

Open cluster in the constellation Auriga

Messier 36
Open cluster M36 seen in infrared light., courtesy of:
Observation data (J2000.0 epoch)
Right ascension	05 36 18.0
Declination	+34° 08′ 24″
Distance	4.34 ± 0.87 kly (1.330 ± 0.266 kpc)
Apparent magnitude (V)	6.3
Apparent dimensions (V)	10′
Physical characteristics
Mass	746+606 −334 M_☉ `M`_☉
Radius	7 ly
Estimated age	25.1 Myr
Other designations	C 0532+341, M 36, NGC 1960, OCl 445
Associations
Constellation	Auriga
See also: Open cluster, List of open clusters

Messier 36 or M36, also known as NGC 1960, is an open cluster of stars in the somewhat northern Auriga constellation. It was discovered by Giovanni Batista Hodierna before 1654, who described it as a nebulous patch. The cluster was independently re-discovered by Guillaume Le Gentil in 1749, then Charles Messier observed it in 1764 and added it to his catalogue. It is about 1,330 pc (4,340 light years) away from Earth. The cluster is very similar to the Pleiades cluster (M45), and if as far away it would be of similar apparent magnitude.

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.

Map

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.
^ 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.
^ 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.
^ 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.{{citation}}: CS1 maint: unflagged free DOI (link)
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.

External links

Messier 36 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

Portals:

v t e Messier objects
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See also	Caldwell catalogue Catalogue of Nebulae and Clusters of Stars Herschel 400 Catalogue Index Catalogue New General Catalogue Revised New General Catalogue
Category Commons Portal

v t e New General Catalogue 1500 to 1999
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Astronomical catalog List of NGC objects 1001–2000

New General Catalogue 1500 to 1999

Constellation of Auriga

Stars

Bayer	α (Capella) β (Menkalinan) γ (Elnath) δ ε (Almaaz) ζ (Saclateni) η (Haedus) θ (Mahasim) ι (Hassaleh) κ λ (Alhurr) μ ν ξ ο π ρ σ τ υ φ χ ψ ψ ψ ψ ψ ψ ψ ψ ψ ω
Flamsteed	2 5 6 9 12 14 16 18 19 22 26 28 36 38 39 40 41 42 43 45 47 49 51 53 54 59 60 62 63 64 65 66 35 Cam
Variable	R T RT (48) RW SU UU WW AB AE AR (17) EO IQ IU LY MZ NO NY PU QZ V352 V361 V394 V420 V433 V538
HR	1558 1615 1738 1752 1794 1795 1822 1825 1866 1884 1938 1945 2028 2096 2137
HD	33203 33463 35619 43691 45350 (Lucilinburhuc) 49674 (Nervia)
Other	Gliese 268 HAT-P-9 (Tevel) KELT-2 MWC 480 SGR 0501+4516 UGPS J0521+3640 WASP-12

Exoplanets	HAT-P-9b (Alef) HD 40979 b HD 43691 b HD 45350 b HD 49674 b KELT-2Ab WASP-12b

Star
clusters

NGC	1664 1893 1907 1931 2240 2281
Other	Messier 36 Messier 37 Messier 38 Palomar 2

Nebulae

NGC	1985 2242
Other	IC 405 IC 2149 Westbrook Nebula

Galaxies	3C 147 4C +41.17 DA 193 MCG +08-11-011

Galaxy clusters	MACS J0717.5+3745

Revision as of 00:53, 29 June 2023

Map

See also

References

External links