NGC 6025

Last updated
NGC 6025 DECaPS DR2.jpg
NGC 6025 and the surrounding star field
Credit: DECaPS
Observation data (J2000 epoch)
Right ascension 16h 03m 07.0s [1]
Declination −60° 25′ 48″ [1]
Distance 2,410  ly (739.0  pc) [1]
Apparent magnitude  (V)5.1 [2]
Apparent dimensions (V)15′ [2]
Physical characteristics
Estimated age40 to 69 Myr [3]
Other designations Caldwell 95, Collinder 296, Melotte 139, Lacaille III.10, Dunlop 304
Associations
Constellation Triangulum Australe
See also: Open cluster, List of open clusters

NGC 6025 is an open cluster of stars in the southern constellation of Triangulum Australe, near the northern constellation border with Norma. It was discovered by Abbe Lacaille in 1751 during his expedition to the Cape of Good Hope. [4] [5] The cluster is in the Caldwell catalogue as entry number 95, [2] and is located at a mean distance of 2,410  ly from the Sun. [1] NGC 6025 can be spotted with the naked eye, [6] but is better viewed with a set of large binoculars. [2] It has an apparent visual magnitude of 5.1 and spans an angular size of 15′ . [2]

Contents

The Trumpler class of this cluster is II3p, indicating, "a detached cluster with but little central condensation, composed of moderately bright and faint stars numbering less than 50." [7] The brightest cluster member is MQ Triangulum Australis, with a magnitude of 7.1. [2] This is a blue straggler with a stellar classification of B1Ve. [8] NGC 6025 is a moderately young cluster with an age between 40 and 69 Myr. [3] The cluster is metal-rich compared to the Sun; more so than the Hyades cluster. [9] Seven spectroscopic binary star systems have been identified. [10] Only one blue straggler has been found among the members, along with two Be candidates. [3]

Related Research Articles

<span class="mw-page-title-main">Messier 35</span> Open cluster in the constellation Gemini

Messier 35 or M35, also known as NGC 2168 or the Shoe-Buckle Cluster, is a relatively close open cluster of stars in the west of Gemini, at about the declination of the Sun when the latter is at June solstice. It was discovered by Philippe Loys de Chéseaux around 1745 and independently discovered by John Bevis before 1750. It is scattered over part of the sky almost the size of the full moon and is 2,970 light-years away. The compact open cluster NGC 2158 lies directly southwest of it.

<span class="mw-page-title-main">Messier 50</span> Open cluster in the constellation Monoceros

Messier 50 or M 50, also known as NGC 2323 or the Heart-shaped Cluster, is an open cluster of stars in the constellation Monoceros. It was recorded by G. D. Cassini before 1711 and independently discovered by Charles Messier in 1772 while observing Biela's Comet. It is sometimes described as a 'heart-shaped' figure or a blunt arrowhead.

<span class="mw-page-title-main">Messier 52</span> Open cluster in the constellation Cassiopeia

Messier 52 or M52, also known as NGC 7654 or the Scorpion Cluster, is an open cluster of stars in the highly northern constellation of Cassiopeia. It was discovered by Charles Messier in 1774. It can be seen from Earth under a good night sky with binoculars. The brightness of the cluster is influenced by extinction, which is stronger in the southern half. Its metallicity is somewhat below that of the Sun, and is estimated to be [Fe/H] = −0.05 ± 0.01.

<span class="mw-page-title-main">NGC 2204</span> Open cluster in the constellation Canis Major

NGC 2204 is an open cluster of stars in the Canis Major constellation. It was discovered by the German-English astronomer William Herschel on 6 February 1785. The cluster has an integrated visual magnitude of 8.6 and spans a diameter of 10.0′. Resolving the individual member stars is a challenge with a 10 to 12-inch amateur telescope. It is located at a distance of approximately 13,400 light years from the Sun. The cluster shows a mean radial velocity of +91.38±0.30 km/s relative to the Sun, and is orbiting the inner galactic disk region about 1 kpc below the galactic plane.

<span class="mw-page-title-main">12 Canis Majoris</span> Variable star in the constellation Canis Major

12 Canis Majoris is a variable star located about 707 light years away from the Sun in the southern constellation of Canis Major. It has the variable star designation HK Canis Majoris; 12 Canis Majoris is the Flamsteed designation. This body is just barely visible to the naked eye as a dim, blue-white hued star with a baseline apparent visual magnitude of +6.07. It is moving away from the Earth with a heliocentric radial velocity of +16 km/s. This is the brightest star in the vicinity of the open cluster NGC 2287, although it is probably not a member based on its proper motion.

<span class="mw-page-title-main">NGC 5822</span> Open cluster in the constellation Lupus

NGC 5822 is an open cluster of stars in the southern constellation of Lupus. It was discovered by English Astronomer John Herschel on July 3, 1836, and lies close to another cluster, NGC 5823, which suggests there may be a physical association.

<span class="mw-page-title-main">NGC 3293</span> Open cluster in the constellation Carina

NGC 3293 is an open cluster in the Carina constellation. It was discovered by Nicolas-Louis de Lacaille in 1751. It consists of more than 100 stars brighter than 14th magnitude in a 10 arc minute field, the brightest of which are blue supergiants of apparent magnitude 6.5 and 6.7. There is also a 7th magnitude pulsating red supergiant, V361 Carinae.

<span class="mw-page-title-main">HD 93250</span> Highly luminous binary star system in the constellation Carina

HD 93250 is a highly luminous hot blue binary star in the Carina Nebula in the constellation Carina.

<span class="mw-page-title-main">NGC 6193</span> Open star cluster in the constellation Ara

NGC 6193 is open cluster containing 27 stars in the constellation Ara, visible to the unaided eye. NGC 6193 lies at the center of the Ara OB1 association, which extends over a square degree. The cluster is associated with neighboring regions of the nebulosity NGC 6188.

<span class="mw-page-title-main">S Monocerotis</span> Star in the constellation Monoceros

S Monocerotis, also known as 15 Monocerotis, is a massive multiple and variable star system located in the constellation Monoceros. It is the brightest star in the Christmas Tree open cluster in the area catalogued as NGC 2264.

<span class="mw-page-title-main">NGC 2374</span> Open cluster in the constellation Canis Major

NGC 2374 is an open cluster of stars in the Canis Major constellation. It was discovered on January 31, 1785 by the German-British astronomer William Herschel. This cluster is relatively rich in stars but is scattered across an angular diameter of 19.0′. It has an integrated visual magnitude of 8.0 and can be viewed with a modest amateur telescope. NGC 2374 is located at a distance of approximately 3,950 light-years (1,212 pc) from the Sun.

<span class="mw-page-title-main">NGC 2627</span> Open cluster in the constellation Pyxis

NGC 2627 is an open cluster of stars in the constellation Pyxis. It was discovered on March 3, 1793 by German-British astronomer William Herschel. Dutch astronomer J. L. E. Dreyer described it as "a cluster, considerably large, pretty rich, pretty compressed, stars from 11th to 13th magnitude". The cluster has an integrated visual magnitude of 8.4 and it spans an angular size of 11.0′. Around 15 stars are visible when viewed through binoculars. NGC 2627 is located at a distance of approximately 5,990 ly (1,837 pc) from the Sun, just above the galactic midplane.

<span class="mw-page-title-main">NGC 4147</span> Globular cluster in the constellation Coma Berenices

NGC 4147 is the New General Catalogue identifier for a globular cluster of stars in the northern constellation of Coma Berenices. It was discovered by English astronomer William Herschel on March 14, 1784, who described it as "very bright, pretty large, gradually brighter in the middle". With an apparent visual magnitude of 10.7, it is located around 60,000 light years away from the Sun at a relatively high galactic latitude of 77.2°.

<span class="mw-page-title-main">NGC 5617</span> Open cluster in the constellation Centaurus

NGC 5617 is an open cluster in the constellation Centaurus. NGC 5617 forms a binary open cluster with Trumpler 22. It lies one degree west-northwest of Alpha Centauri.

<span class="mw-page-title-main">NGC 4103</span> Open cluster in the constellation Crux

NGC 4103 is an open cluster in the constellation Crux. It was discovered by James Dunlop in 1826. It is located approximately 5,000 light years away from Earth, in the Carina-Sagittarius arm.

<span class="mw-page-title-main">NGC 4815</span> Open cluster in the constellation Musca

NGC 4815 is an open cluster in the constellation Musca. It was discovered by John Herschel in 1834. It is located approximately 10,000 light years away from Earth.

<span class="mw-page-title-main">NGC 3311</span> Galaxy in the constellation Hydra

NGC 3311 is a super-giant elliptical galaxy located about 190 million light-years away in the constellation Hydra. The galaxy was discovered by astronomer John Herschel on March 30, 1835. NGC 3311 is the brightest member of the Hydra Cluster and forms a pair with NGC 3309 which along with NGC 3311, dominate the central region of the Hydra Cluster.

<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">NGC 1193</span> Open cluster in the Perseus constellation

NGC 1193 is an open cluster in the Perseus constellation. It was first observed and catalogued by astronomer William Herschel in 1786. The cluster is estimated to be approximately 4.2 billion years old.

References

  1. 1 2 3 4 Tarricq, Y.; et al. (March 2021). "3D kinematics and age distribution of the open cluster population". Astronomy & Astrophysics. 647. id. A19. arXiv: 2012.04017 . Bibcode:2021A&A...647A..19T. doi:10.1051/0004-6361/202039388.
  2. 1 2 3 4 5 6 Mobberley, Martin (2009). The Caldwell Objects and How to Observe Them. Springer New York. p. 198. ISBN   9781441903266.
  3. 1 2 3 Aidelman, Y.; et al. (May 2015). "Open clusters. II. Fundamental parameters of B stars in Collinder 223, Hogg 16, NGC 2645, NGC 3114, and NGC 6025". Astronomy & Astrophysics. 577. id. A45. Bibcode:2015A&A...577A..45A. doi:10.1051/0004-6361/201425085. hdl: 11336/14076 .
  4. ↑ Seligman, Courtney. "New General Catalog Objects: NGC 6000 - 6049". cseligman.com. Retrieved 2023-11-13.
  5. ↑ Jones, K. G. (March 1969). "The search for the nebulae - VI". Journal of the British Astronomical Association. 79: 213–222. Bibcode:1969JBAA...79..213J.
  6. ↑ Bakich, Michael E. (2010). 1,001 Celestial Wonders to See Before You Die: The Best Sky Objects for Star Gazers. The Patrick Moore Practical Astronomy Series. Springer Science & Business Media. p. 186. ISBN   9781441917775.
  7. ↑ Hogg, A. R. (1953). "Photometry of the galactic cluster NGC 6025". Monthly Notices of the Royal Astronomical Society. 113 (6): 746. Bibcode:1953MNRAS.113..746H. doi: 10.1093/mnras/113.6.746 .
  8. ↑ Grosso, M.; Levato, H. (October 2011). "Spectral morphology and rotation in the open cluster NGC 6025". Revista Mexicana de Astronomía y Astrofísica. 47: 255–259. Bibcode:2011RMxAA..47..255G.
  9. ↑ Cameron, L. M. (June 1985). "Metallicities and distances of galactic clusters as determined from UBV-data. II. The metallicities and distances of 38 open clusters". Astronomy and Astrophysics. 147: 39–46. Bibcode:1985A&A...147...39C.
  10. ↑ Levato, H.; et al. (August 2004). Allen, Christine; Scarfe, Colin (eds.). Spectroscopic binaries in southern open clusters. The Environment and Evolution of Double and Multiple Stars, Proceedings of IAU Colloquium 191, held 3-7 February, 2002 in Merida, Yucatan, Mexico. Revista Mexicana de Astronomía y Astrofísica (Serie de Conferencias). Vol. 21. pp. 141–142. Bibcode:2004RMxAC..21..141L.

Further reading

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.