NGC 6871

Last updated
NGC 6871
NGC 6871.png
NGC 6871, taken from Stellarium
Observation data (J2000 epoch)
Right ascension 20h 05m 59s [1]
Declination +35° 46.6 [1]
Distance 5133 ly (1574 pc [2] )
Apparent magnitude  (V)5.2 [3]
Physical characteristics
Estimated age9.1 million years
Presence of eclipsing binary stars [4]
Other designationsGC 4548, h 2067, Struve 2630 [3]
Associations
Constellation Cygnus
See also: Open cluster, List of open clusters

NGC 6871 is a small, young open cluster in the constellation of Cygnus. The cluster has fewer than 50 members, most of which are blue and white stars. It is located 5135 light-years from Earth.

Map showing location of NGC 6871 NGC6871map.png
Map showing location of NGC 6871

NGC 6871 was born in the same giant molecular cloud with at least six other open clusters. The other open clusters are not gravitationally associated with NGC 6871. NGC 6871 itself also seems to be disintegrating. [5]

Prominent stars
Star nameEffective temperatureAbsolute magnitudeBolometric magnitudeMass (M)Spectral typeRef.
HD 19086439900-5.5-9.345O7III [6]
HD 22686833000-6.4-9.640O9.7I [6]
HD 22701841000-4.9-8.838O7V [6]
HD 19120131600-5.8-8.935B0V [6]
WR 133 A 70800-3.4-8.819.3WN5o [6] [7]
ADS 13374 B (Companion to WR 133 A, also WR 133 B)30000-5.4-8.4922.6O9.5I [6] [7]
HD 22763429500-5.3-8.225B0.2III [6]
HD 19091926300-5.8-8.325B1Ib [6]
BD+35 395526300-5.7-8.324B1Ib [6]

Related Research Articles

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<span class="mw-page-title-main">R136</span> Super star cluster in the constellation Dorado, in the Large Magellanic Cloud

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<span class="mw-page-title-main">NGC 346</span> Open cluster in the constellation Tucana

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<span class="mw-page-title-main">Cygnus OB2</span> Cluster of massive and luminous stars

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<span class="mw-page-title-main">NGC 371</span> Open cluster in the constellation Tucana

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<span class="mw-page-title-main">WR 42e</span> Star in the constellation Carina

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<span class="mw-page-title-main">LH 41-1042</span> Wolf Rayet star in the constellation Dorado

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<span class="mw-page-title-main">HM 1</span> Open cluster in the constellation Scorpius

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<span class="mw-page-title-main">NGC 6910</span> Open cluster in the constellation Cygnus

NGC 6910 is an open cluster in the constellation Cygnus. It was discovered by William Herschel on October 17, 1786. The cluster was also observed by John Herschel on September 18, 1828. It is a poor cluster with prominent central concentration and Trumpler class I2p. NGC 6910 is the core cluster of the stellar association Cygnus OB9.

<span class="mw-page-title-main">Trumpler 27</span>

Trumpler 27 is a possible open cluster in the southern constellation Scorpius. If it exists, it is a few thousand light-years away from the Sun, with estimates ranging from 3,900 light-years to 6,800 light-years The name refers to Robert Julius Trumpler's catalog of open clusters, published in 1930.

<span class="mw-page-title-main">Collinder 228</span>

Collinder 228 is an open cluster within the southern part of the Carina Nebula NGC 3372, about 25' south of η Carinae. It is probably composed of stars which recently formed from the material in the nebula. QZ Carinae is the brightest member of Collinder 228 with an apparent magnitude between 6.16–6.49 .

<span class="mw-page-title-main">Berkeley 86</span> Young open cluster in Cygnus

Berkeley 86 is a young open cluster in Cygnus. It is located inside the OB Stellar association Cyg OB 1, and obscured by a foreground dust cloud.

<span class="mw-page-title-main">Berkeley 87</span>

Berkeley 87 is an open cluster in a heavily obscured region of the Milky Way in Cygnus. The rare WO type Wolf–Rayet star WR 142 is a member of Berkeley 87.

<span class="mw-page-title-main">WR 133</span> Wolf-Rayet star and spectroscopic binary star in the constellation of Cygnus

WR 133 is a visually moderately bright Wolf-Rayet star. It is a spectroscopic binary system containing a Wolf-Rayet primary and a class O supergiant secondary. It is in the constellation of Cygnus, lying in the sky at the centre of the triangle formed by β and γ Cygni, near η Cygni. It is the brightest member of the sparse open cluster NGC 6871.

<span class="mw-page-title-main">HD 152408</span> Star in the constellation of Scorpius

HD 152408, also known as WR 79a, is a Wolf-Rayet star located in the constellation Scorpius, close to the galactic plane. Its distance is around 2,020 parsecs away from the Earth.

References

  1. 1 2 "NGC 6871". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2012-09-21.
  2. "Results for NGC 6871". WEBDA Database. Retrieved 2012-09-21.
  3. 1 2 "Results for NGC 6871". SEDS' Interactive NGC Catalog Online. Retrieved 2012-09-21.
  4. "Astronomy Magazine". NGC 6871 - open cluster in Cygnus. Retrieved 2015-08-18.
  5. Casado, Juan; Hendy, Yasser (2023). "Discovery and description of two young open clusters in the primordial group of NGC 6871". Monthly Notices of the Royal Astronomical Society. 521 (1): 1399–1407. arXiv: 2211.12843 . Bibcode:2023MNRAS.521.1399C. doi: 10.1093/mnras/stad071 .
  6. 1 2 3 4 5 6 7 8 9 Massey, P.; Degioia-Eastwood, K.; Waterhouse, E. (2001). "The Progenitor Masses of Wolf-Rayet Stars and Luminous Blue Variables Determined from Cluster Turnoffs. II. Results from 12 Galactic Clusters and OB Associations". The Astronomical Journal. 121 (2): 1050–1070. arXiv: astro-ph/0010654 . Bibcode:2001AJ....121.1050M. doi:10.1086/318769. S2CID   53345173.
  7. 1 2 Richardson, Noel D.; Lee, Laura; Schaefer, Gail; Shenar, Tomer; Sander, Andreas A. C.; Hill, Grant M.; Fullard, Andrew G.; Monnier, John D.; Anugu, Narsireddy; Davies, Claire L.; Gardner, Tyler (2021-02-01). "The First Dynamical Mass Determination of a Nitrogen-rich Wolf-Rayet Star Using a Combined Visual and Spectroscopic Orbit". The Astrophysical Journal Letters. 908 (1): L3. arXiv: 2101.04232 . Bibcode:2021ApJ...908L...3R. doi: 10.3847/2041-8213/abd722 . ISSN   0004-637X. S2CID   231582956.