NGC 6365

Last updated
NGC 6365
N6365s.jpg
Observation data
Constellation Draco (constellation)
Right ascension 17h 22m 43,7s
Declination 62° 10′ 12″
Apparent magnitude  (V)13,9 and 14,2
Apparent magnitude  (B)14,6 and 14,8
Surface brightness 14,00 and 12,56 mag/am2
Characteristics
Type Interacting galaxies
Other designations
CGCG 300-20

VV 232 Arp 30 NGC 6365A PGC 60174 UGC 10832 MCG 10-25-19 KCPG 511A NGC 6365B PGC 60171 CGCG 10833 MCG 10-25-18 KCPG 511B

IRAS 17222+6212

Contents

NGC 6365 is a pair of spiral galaxies in the constellation Draco. It consists of two galaxies, PGC 60174 to the south, and PGC 60171 to the north. These two galaxies are also designated respectively by the NASA/IPAC database as NGC 6365A [1] and NGC 6365B. [2] This pair of galaxies was discovered by German astronomer Lewis Swift in 1884. [3]

NGC 6563A

NGC 6563A is the northern counterpart of NGC 6563, and is a barred spiral galaxy. Its coordinates are 17h 22m 43.8s and 62° 09′ 57.9″. [3] Its speed relative to the cosmic microwave background is 8,413 ± 4 km/s, which corresponds to a Hubble distance of 124.1 ± 8.7 Mpc (∼405 million ly). [3]

The luminosity class of NGC 6365A is III-IV and it has a broad HI [3] line. It is an active galaxy (AGN) [4] of type Seyfert 2. [3]

With a surface brightness equal to 14.00 mag/am^2, we can qualify NGC 6365A as a low surface brightness galaxy (LSB). LSB galaxies are diffuse (D) galaxies with a surface brightness less than one magnitude lower than that of the ambient night sky.

To date, nearly fifteen measurements not based on redshift give a distance of 111.469 ± 31.088 Mpc (∼364 million ly), [5] which is within the values ​​of the Hubble distance.

Supernova

The supernova SN 2003U was discovered in NGC 6365A on January 27, 2003, by Scottish astronomer Tom Boles. [6] This supernova was of type Ia.

NGC 6563B

NGC is the southern counterpart of NGC 6563, and is a spiral galaxy. However, the NASA/IPAC database and Professor Seligman indicate that it is Magellanic in type. Its coordinates are 17h 22m 43.5s and 62° 10′ 25.4″. [2] Its speed relative to the cosmic microwave background is 7,975 ± 4 km/s, which corresponds to a Hubble distance of 117.6 ± 8.2 Mpc (∼384 million ly). [2] The luminosity class of NGC 6365B is IV-V and it has a broad HI line. It also contains regions of ionized hydrogen. [2]

Galaxy interaction

The pair of galaxies that make up NGC 6563 appear in Halton Arp's Atlas of Peculiar Galaxies under the designation Arp 30. Arp describes NGC 6365 as a spiral galaxy with an overdeveloped arm, but this has been recently confirmed by astronomers to be false. [7] In the image used by Arp, PGC 60171 (NGC 6365B) appears to be part of PGC 60174 and to be one galaxy. [7] But, they are actually two separate galaxies. According to redshift-based measurements, NGC 6365A is the most distant galaxy. However, given the uncertainties in the measurements, NGC 6365B could be the most distant galaxy. The image taken by the telescope at the Mount Lemmon observatory does not allow us to decide. There is no publication that is only speculative about their position and also about their interaction. [7]

See also

Related Research Articles

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<span class="mw-page-title-main">NGC 521</span> Spiral galaxy in the constellation Cetus

NGC 521, also occasionally referred to as PGC 5190 or UGC 962, is a barred spiral galaxy located approximately 224 million light-years from the Solar System in the constellation Cetus. It was discovered on 8 October 1785 by astronomer William Herschel.

<span class="mw-page-title-main">NGC 918</span> Barred spiral galaxy in the constellation Aries

NGC 918 is a barred spiral galaxy in the constellation Aries, about 67 million light years from the Milky Way. It was discovered by John Herschel on Jan 11, 1831.

<span class="mw-page-title-main">NGC 997</span> Interacting Galaxy in the constellation Cetus

NGC 997 is an interacting galaxy in the constellation of Cetus. The galaxy was discovered by Albert Marth on 10 November 1863. It has a regularly rotating central molecular gas disk, containing a black hole of between 4 x 107 and 1.8 x 109 solar masses. Its speed relative to the cosmological background is 6,270 ± 45 km/s, corresponding to a Hubble distance of 92.5 ± 6.5 Mpc (~302 million ly).

<span class="mw-page-title-main">NGC 855</span> Galaxy in the constellation Triangulum

NGC 855 is a star-forming dwarf elliptical galaxy located in the Triangulum constellation. The discovery and a first description was realized by William Herschel on 26th October 1786 and the findings made public through his Catalogue of Nebulae and Clusters of Stars, published the same year.

<span class="mw-page-title-main">NGC 7329</span> Galaxy in the constellation Tucana

NGC 7329 is a large barred spiral galaxy located in the constellation Tucana. NGC 7329 was discovered by British astronomer John Herschel in 1835.

<span class="mw-page-title-main">NGC 3110</span> Galaxy in the constellation Sextans

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<span class="mw-page-title-main">NGC 646</span> Galaxy in the constellation Hydrus

NGC 646 is a large barred spiral galaxy located in the constellation Hydrus. Its speed relative to the cosmic microwave background is 8,145 ± 19 km/s, which corresponds to a Hubble distance of 120.1 ± 8.4 Mpc. NGC 646 was discovered by British astronomer John Herschel in 1834. It forms an interacting galaxy pair.

<span class="mw-page-title-main">IC 4271</span> Spiral galaxy located in constellation Canes Venatici

IC 4271 is a spiral galaxy located some 800 million light-years away in the Canes Venatici constellation. It is 130,000 light-years in diameter. IC 4271 was first located on July 10, 1896, by Stephane Javelle, a French astronomer. It hosts a Seyfert type 2 nucleus, containing an acceleration disc around its supermassive black hole which releases large amounts of radiation, hence its bright appearance. IC 4271 appears to be interacting with its smaller neighboring galaxy, PGC 3096774.

<span class="mw-page-title-main">NGC 1009</span> Galaxy in the constellation Cetus

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<span class="mw-page-title-main">NGC 626</span> Galaxy in the constellation Sculptor

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<span class="mw-page-title-main">NGC 5279</span> Galaxy in the constellation Ursa Major

NGC 5279 is a spiral galaxy in the constellation Ursa Major. It was discovered by German-British astronomer William Herschel in 1789. NGC 5279 is in gravitational interaction with the galaxy NGC 5278. This pair of galaxies appears in Halton Arp's Atlas of Peculiar Galaxies under the designation Arp 239. The luminosity class of NGC 5279 is I1. NGC 5279 is a galaxy whose core shines in the ultraviolet region. It is listed in the Markarian catalog under the designation Mrk 271.

<span class="mw-page-title-main">IC 2759</span>

IC 2759 is a small type E elliptical galaxy located in the constellation of Leo. It is located 350 million light-years away from the Solar System and was discovered on April 24, 1897, by Guillaume Bigourdan. Sometimes IC 2759 is confused with the spiral galaxy, PGC 34882 which is located south of the galaxy.

<span class="mw-page-title-main">NGC 3800</span> Galaxy in the constellation Leo

NGC 3800 is an intermediate spiral galaxy located in the constellation Leo. Its speed relative to the cosmic microwave background is 3,653 ± 24 km/s, which corresponds to a Hubble distance of 53.9 ± 3.8 Mpc. NGC 3800 was discovered by German-British astronomer William Herschel in 1784.

<span class="mw-page-title-main">NGC 3799</span> Galaxy in the constellation Leo

NGC 3799 is a barred spiral galaxy located in the constellation Leo. Its speed relative to the cosmic microwave background is 3,659 ± 24 km/s, which corresponds to a Hubble distance of 54.0 ± 3.8 Mpc. NGC 3799 was discovered by British astronomer John Herschel in 1832.

References

  1. ↑ "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 2024-05-09.
  2. 1 2 3 4 "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 2024-05-09.
  3. 1 2 3 4 5 "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 2024-05-09.
  4. ↑ "NGC 6365A". simbad.u-strasbg.fr. Retrieved 2024-05-09.
  5. ↑ "NED Query Results for NGC 6365A". ned.ipac.caltech.edu. Retrieved 2024-05-09.
  6. ↑ "Tom Boles searching for SuperNovae at the Coddenham Observatory". coddenhamobservatories.org. Retrieved 2024-05-09.
  7. 1 2 3 "New General Catalog Objects: NGC 6350 - 6399". cseligman.com. Retrieved 2024-05-09.
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