NGC 819

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NGC 819
NGC819 - SDSS DR14.jpg
NGC 819 (SDSS)
Observation data (J2000.0 epoch)
Constellation Triangulum
Right ascension 02h 08m 34.40s [1]
Declination +29° 14′ 03.00″ [1]
Redshift 0.021935 [1]
Heliocentric radial velocity 6576 ± 10 km/s [1]
Distance 302 Mly
Apparent magnitude  (V)13.40 [2]
Apparent magnitude  (B)14.30 [2]
Characteristics
Type S? [1]
Apparent size  (V)0.6 x 0.4 [2]
Other designations
IRAS 02056+2859, UGC 1632, PGC 8174, CGCG 504-017

NGC 819 is a spiral galaxy approximately 302 million light-years away from Earth in the constellation of Triangulum. [1] [3] It forms a visual pair with the galaxy NGC 816 5.7' WNW. [4]

Contents

Discovery

NGC 819 was discovered by German astronomer Heinrich Louis d'Arrest on September 20, 1865 with the 11-inch refractor at Copenhagen. [4] Édouard Stephan independently found the galaxy again on September 15, 1871 with the 31" reflector at Marseille Observatory. [4]

Supernovae

Supernova SN 2007hb was discovered in NGC 819 on August 24, 2007 by Nearby Supernova Factory. [5] SN 2007hb had a magnitude of about 19.5 and was located at RA 02h08m34.0s, DEC +29d14m14s, J2000.0. [5] [1] It was classified as a type Ib/c supernova. [5]

Supernova SN 2016hkn was discovered in NGC 819 on October 22, 2016 by Fabio Briganti. [6] SN 2014bu had a magnitude of about 17.2 and was located at RA 02h08m34.2s, DEC +29d14m11s, J2000.0. [6] [1] It was classified as a type II supernova. [6]

Supernova SN 2020mbe (type Ic, mag. 18.6) was discovered in NGC 819 on 10 January 2020. [7]

NGC 819 (SDSS) NGC 0819 SDSS.jpg
NGC 819 (SDSS)

See also

Related Research Articles

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<span class="mw-page-title-main">NGC 1272</span> Galaxy in the constellation Perseus

NGC 1272 is a massive elliptical galaxy located about 230 million light-years away in the constellation Perseus. It was discovered by astronomer Heinrich d'Arrest on February 14, 1863. NGC 1272 has an active nucleus and is the second brightest member of the Perseus Cluster after NGC 1275.

<span class="mw-page-title-main">NGC 1282</span> Galaxy in the constellation Perseus

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<span class="mw-page-title-main">NGC 3861</span> Galaxy in the constellation Leo

NGC 3861 is a large barred spiral galaxy with a ring-like structure located about 310 million light-years away in the constellation Leo. It was discovered by astronomer John Herschel on March 23, 1827. NGC 3861 is a member of the Leo Cluster and has a normal amount of neutral hydrogen and ionised hydrogen.

<span class="mw-page-title-main">NGC 3873</span> Galaxy in the constellation Leo

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<span class="mw-page-title-main">NGC 753</span> Galaxy in the constellation Andromeda

NGC 753 is a spiral galaxy located 220 million light-years away in the constellation Andromeda. The galaxy was discovered by astronomer by Heinrich d'Arrest on September 16, 1865 and is a member of Abell 262.

<span class="mw-page-title-main">NGC 4070</span> Galaxy in the constellation Coma Berenices

NGC 4070 is an elliptical galaxy located 340 million light-years away in the constellation Coma Berenices. NGC 4070 was discovered by astronomer William Herschel on April 27, 1785. It was rediscovered by John Herschel on April 29, 1832 and was listed as NGC 4059. The galaxy is a member of the NGC 4065 Group.

<span class="mw-page-title-main">NGC 4076</span> Galaxy in the constellation Coma Berenices

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NGC 2525 is a barred spiral galaxy located in the constellation Puppis. It is located at a distance of about 70 million light years from Earth, which, given its apparent dimensions, means that NGC 2525 is about 60,000 light years across. It was discovered by William Herschel on February 23, 1791.

<span class="mw-page-title-main">NGC 694</span> Spiral galaxy in the constellation Aries

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<span class="mw-page-title-main">NGC 4316</span> Spiral galaxy in the constellation Virgo

NGC 4316 is an edge-on spiral galaxy located about 70 million light-years away in the constellation Virgo. It was discovered by astronomer Wilhelm Tempel on March 17, 1882. NGC 4316 is a member of the Virgo Cluster and is classified as LINER and as a Seyfert galaxy.

<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 3978</span> Galaxy in the constellation Ursa Major

NGC 3978 is a large intermediate spiral galaxy with a bar located in the constellation of Ursa Major. It is located 460 million light-years away from the Solar System and was discovered by William Herschel on March 19, 1790, but also observed by John Herschel on April 14, 1831.

References

  1. 1 2 3 4 5 6 7 8 "NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved March 4, 2019.
  2. 1 2 3 "Revised NGC Data for NGC 819". spider.seds.org. Retrieved March 4, 2019.
  3. ↑ "NGC 819" . Retrieved March 4, 2019.
  4. 1 2 3 "Data for NGC 819". www.astronomy-mall.com. Retrieved March 4, 2019.
  5. 1 2 3 "Transient Name Server (TNS): SN 2007hb". wis-tns.weizmann.ac.il. Retrieved March 4, 2019.
  6. 1 2 3 "Transient Name Server (TNS): SN 2016hkn". wis-tns.weizmann.ac.il. Retrieved March 4, 2019.
  7. ↑ "SN 2020mbe". Transient Name Server. IAU . Retrieved 5 September 2024.
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