NGC 5144

NGC 5144
Pan-STARRS image of NGC 5144
Observation data (J2000 epoch)
ConstellationUrsa Minor
Right ascension13h 23m 07s
Declination70° 27′ 43″
Redshift0.010477
Distance154 Mly (47.22 Mpc)
Apparent magnitude (V)13.1
Apparent magnitude (B)13.4
Characteristics
TypeSAc pec [1]
Size64,500 ly (estimated 19.78 kpc)
Apparent size (V)1.2' x 0.8'
Other designations
UGC 8420, PGC 46742, MRK 256, KUG 1321+707, MCG +12-13-005

NGC 5144 is an unbarred spiral galaxy located in the constellation of Ursa Minor. It has a velocity of 3,202 ± 9 km/s corresponding to a Hubble Distance of 47.2 ± 3.3 megaparsecs (154 million light-years).[2] It was discovered by William Herschel in May 1791.[3]

The luminosity class of NGC 5144 is classified as III with a broad HI line.[4] It is a possible field galaxy which isn't belonging to a group or any cluster, making it gravitationally isolated.[5]

NGC 5144 is also a starburst galaxy[6] and classified as a Markarian galaxy (designated as MRK 256), since its core emits out excessive amounts of ultraviolet light.[7][8]

References

  1. ↑ NED, NGC 5144 (accessed 20-03-2012)
  2. ↑ "NASA/IPAC Extragalactic Database Results for NGC 5144". ned.ipac.caltech.edu. Retrieved 2024-07-31.
  3. ↑ "New General Catalog Objects: NGC 5100 - 5149". cseligman.com. Retrieved 2024-07-31.
  4. ↑ Springob, Christopher M.; Haynes, Martha P.; Giovanelli, Riccardo; Kent, Brian R. (2005-09-01). "A Digital Archive of H I 21 Centimeter Line Spectra of Optically Targeted Galaxies". The Astrophysical Journal Supplement Series. 160: 149–162. doi:10.1086/431550. ISSN 0067-0049.
  5. ↑ Turner, E. L.; Gott, J. R., III (1976-11-01). "Groups of galaxies. I. A catalog". The Astrophysical Journal Supplement Series. 32: 409–427. doi:10.1086/190403. ISSN 0067-0049.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  6. ↑ Davoust, E.; Contini, T. (2004-03-01). "Starbursts in barred spiral galaxies. VI. HI observations and the K-band Tully-Fisher relation". Astronomy and Astrophysics. 416: 515–527. arXiv:astro-ph/9902174. doi:10.1051/0004-6361:20031726. ISSN 0004-6361.
  7. ↑ Mazzarella, Joseph M.; Balzano, Vicki A. (1986-12-01). "A Catalog of Markarian Galaxies". The Astrophysical Journal Supplement Series. 62: 751. doi:10.1086/191155. ISSN 0067-0049.
  8. ↑ Arakelian, M. A.; Dibay, E. A.; Yesipov, V. F.; Markarian, B. E. (1971-01-01). "The spectra of Markarian galaxies. III". Astrofizika. 7: 177–187.


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