LMC N79

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LMC N79
Emission nebula
star-forming region
LMC-N79 Spitzer.jpg
LMC N79 with the Spitzer Space Telescope. The nebula in the center is N79-S, containing a super star cluster
Observation data: J2000 epoch
Right ascension 04h 52m 00.0s
Declination −69° 22′ 30″
Apparent dimensions (V)1038" x 814" [1]
Constellation Dorado
DesignationsLHA 120-N 79, DEM L 10, DEM L 6
See also: Lists of nebulae

LMC N79 (or just N79) is an emission nebula in the Large Magellanic Cloud. The nebula is part of the catalog of H-alpha stars and nebulae by Karl G. Henize, published in 1956. It is composed of the smaller nebulae N79A to N79E [1] From a CO survey it was however seen that the nebula is larger and contains N79-S, N79-W and N79-E. [2] These nebulae were described by Henize with other names, with N79-S being the original N79 nebula, N79-W being N77 and N79-E being N83. [1]

Contents

NGC/IC objects overlapping with N79
HenizeOchsendorf+NGC nebulaNGC star clusterIC objects
N79N79-S NGC 1722 NGC 1727, NGC 1712 IC 2111
N77N79-W NGC 1698 IC 2105
N83N79-E NGC 1737 NGC 1743, NGC 1745, NGC 1748 IC 2114

Super star cluster

central massive stars of the super star cluster with NIRCam. The most massive stars are labeled Y4-Y8 H72.97-69.39 super star cluster massive stars.jpg
central massive stars of the super star cluster with NIRCam. The most massive stars are labeled Y4-Y8

The central nebula N79-S contains the super star cluster (SSC) H72.97-69.39, also called HSO BMHERICC J072.9711-69.3911. This SSC was first suspected to exist in N79 in 2017 from Spitzer and Herschel observations. [2] The SSC was observed with ALMA. This showed that the SSC is at the center of two colliding filaments. ALMA also showed bipolar outflows that are 65,000 years old and a HII region associated with the SSC. [3] The stellar content was first studied with Gemini in 2021. At that time it was estimated that the SSC contains stars with a mass between 10,000 and 100,000 M☉. [4] Observations with JWST confirmed H72.97-69.39 as a SSC. Researchers discovered five massive stars in the center of the SSC with masses ranging between 20 and 40 M☉. The youngest massive young stellar objects (YSOs) of H72.97-69.39 is called Y3 and is 10,000 years old. The central ionizing source is Y4, which is the most massive of the YSOs with a mass of around 40 M☉. With MIRI the researchers identified 102 embedded YSOs in total. [5] [6] Yet to be published work with NIRCam detected 1550 young stars in N79. [7]

See also

Milky Way SSCs:

Related Research Articles

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<span class="mw-page-title-main">Tarantula Nebula</span> H II region in the constellation Dorado

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<span class="mw-page-title-main">NGC 2070</span> Large open cluster in the constellation Dorado

NGC 2070 is a large open cluster and candidate super star cluster forming the heart of the bright region in the centre-south-east of the Large Magellanic Cloud. This cluster was discovered by French astronomer Nicolas-Louis de Lacaille in 1752. It is at the centre of the Tarantula Nebula and produces most of the energy that makes the latter's gas and dust visible. Its central condensation is the star cluster R136, one of the most energetic star clusters known. Among its stars are many of great dimension, including the second most massive star known, R136a1, at 215 M☉ and 6.16 million L☉.

<span class="mw-page-title-main">NGC 1427</span> Galaxy in the constellation Fornax

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<span class="mw-page-title-main">N119</span> Spiral shaped H II region in the constellation Dorado

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<span class="mw-page-title-main">LHA 120-N 55</span> Nebula in the constellation Dorado

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<span class="mw-page-title-main">IRAS 05280–6910</span> Red supergiant star in the Large Magellanic Cloud

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<span class="mw-page-title-main">LMC X-1</span> Star in the constellation Dorado

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References

  1. 1 2 3 Henize, Karl G. (1956-09-01). "Catalogues of Hα-emission Stars and Nebulae in the Magellanic Clouds". The Astrophysical Journal Supplement Series. 2: 315. Bibcode:1956ApJS....2..315H. doi:10.1086/190025. ISSN   0067-0049.
  2. 1 2 Ochsendorf, Bram B.; Zinnecker, Hans; Nayak, Omnarayani; Bally, John; Meixner, Margaret; Jones, Olivia C.; Indebetouw, Remy; Rahman, Mubdi (2017-10-01). "The star-forming complex LMC-N79 as a future rival to 30 Doradus". Nature Astronomy. 1 (11): 784–790. arXiv: 1710.00805 . Bibcode:2017NatAs...1..784O. doi:10.1038/s41550-017-0268-0. ISSN   2397-3366.
  3. ↑ Nayak, O.; Meixner, M.; Sewiło, M.; Ochsendorf, B.; Bolatto, A.; Indebetouw, R.; Kawamura, A.; Onishi, T.; Fukui, Y. (2019-06-01). "ALMA Reveals Kinematics of Super Star Cluster Candidate H72.97-69.39 in LMC-N79". The Astrophysical Journal. 877 (2): 135. Bibcode:2019ApJ...877..135N. doi: 10.3847/1538-4357/ab1b38 . ISSN   0004-637X.
  4. ↑ Andersen, Morten; Zinnecker, Hans; Hirschauer, Alec S.; Nayak, Omnarayani; Meixner, Margaret (2021-04-01). "The Stellar Content of H72.97-69.39, a Potential Super Star Cluster in the Making". The Astronomical Journal. 161 (4): 206. arXiv: 2102.06544 . Bibcode:2021AJ....161..206A. doi: 10.3847/1538-3881/abe622 . ISSN   0004-6256.
  5. ↑ Nayak, Omnarayani; Hirschauer, Alec S.; Kavanagh, Patrick J.; Meixner, Margaret; Chu, Laurie; Habel, Nolan; Jones, Olivia C.; Lenkić, Laura; Nally, Conor; Reiter, Megan; Robberto, Massimo; Sargent, B. A. (2024-03-01). "JWST Mid-infrared Spectroscopy Resolves Gas, Dust, and Ice in Young Stellar Objects in the Large Magellanic Cloud". The Astrophysical Journal. 963 (2): 94. Bibcode:2024ApJ...963...94N. doi: 10.3847/1538-4357/ad18bc . ISSN   0004-637X.
  6. ↑ Nayak, Omnarayani; Nally, Conor; Hirschauer, Alec S.; Jones, Olivia C.; Jaspers, Jeroen; Lenkić, Laura; Meixner, Margaret; Habel, Nolan; Reiter, Megan; Chu, Laurie; Kavanagh, Patrick J.; Robberto, Massimo; Sargent, B. A. (2024-11-01). "Embedded Young Stellar Objects near H72.97-69.39: A Forming Super Star Cluster in N79". The Astrophysical Journal. 975 (2): 262. Bibcode:2024ApJ...975..262N. doi: 10.3847/1538-4357/ad7baf . ISSN   0004-637X.
  7. ↑ "Young Stars in the Milky Way's Backyard Challenge Our Understanding of How They Form". National Radio Astronomy Observatory. Retrieved 2025-01-17.
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