| NGC 4561 | |
|---|---|
 Hubble Space Telescope image of NGC 4561 | |
| Observation data (J2000 epoch) | |
| Constellation | Coma Berenices |
| Right ascension | 12 36 08.137 |
| Declination | +19° 19′ 21.32″ |
| Redshift | 0.00454±0.00020 |
| Heliocentric radial velocity | 1,410 km/s |
| Distance | 82 ± 14 Mly (25.2 ± 4.3 Mpc) |
| Group or cluster | Virgo Cluster |
| Apparent magnitude (B) | 12.70 |
| Characteristics | |
| Type | SB(rs)dm, Sc(dSc) |
| Number of stars | 1.23×10 M☉ |
| Apparent size (V) | 0.727′ × 0.581′ (NIR) |
| Other designations | |
| 2MASX J12360813+1919213, NGC 4561, IC 3569, UGC 7768, PGC 42020 | |
NGC 4561 is a barred spiral galaxy in the constellation Coma Berenices. It was discovered by German-British astronomer William Herschel on April 13, 1784. This galaxy is located at a distance of 82 ± 14 million light-years (25.2 ± 4.3 Mpc) from the Milky Way, and is a member of the Virgo Cluster of galaxies. It is 13th magnitude with an angular size of 1.5′.
The morphological classification of NGC 4561 in the De Vaucouleurs system is SB(rs)dm, indicating a barred spiral galaxy (SB) with a transitional inner ring structure (rs), loosely wound spiral arms (d), and an irregular appearance with no bulge component (m). The galactic plane is inclined at an angle of 28° to the plane of the sky, with the major axis aligned along a position angle of 60°. It has a star formation rate of 0.23 M☉·yr. The net stellar mass of the galaxy is 1.23×10 M☉.
A nuclear X-ray source was detected in NGC 4561 by Chandra, and was determined to be an active galactic nucleus based on XMM-Newton observations. It has a small supermassive black hole at the source, with a mass of at least 2×10 M☉.
References
- ^ Skrutskie, Michael F.; et al. (February 1, 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331.
- Abazajian, Kevork N.; et al. (2009). "The Seventh Data Release of the Sloan Digital Sky Survey". The Astrophysical Journal Supplement Series. 182 (2): 543–558. arXiv:0812.0649. Bibcode:2009ApJS..182..543A. doi:10.1088/0067-0049/182/2/543. S2CID 14376651.
- ^ Voyer, E. N.; et al. (September 2014). "The GALEX Ultraviolet Virgo Cluster Survey (GUViCS). III. The ultraviolet source catalogs". Astronomy & Astrophysics. 569: A124. arXiv:1405.4344. Bibcode:2014A&A...569A.124V. doi:10.1051/0004-6361/201322511. S2CID 118455940. A124.
- ^ Haynes, Martha P.; et al. (July 2018). "The Arecibo Legacy Fast ALFA Survey: The ALFALFA Extragalactic H I Source Catalog". The Astrophysical Journal. 861 (1): 49. arXiv:1805.11499. Bibcode:2018ApJ...861...49H. doi:10.3847/1538-4357/aac956. 49.
- ^ Jiménez-Donaire, María J.; et al. (March 2023). "VERTICO. III. The Kennicutt-Schmidt relation in Virgo cluster galaxies". Astronomy & Astrophysics. 671. id. A3. arXiv:2211.16521. Bibcode:2023A&A...671A...3J. doi:10.1051/0004-6361/202244718.
- ^ De Vaucouleurs, Gerard; De Vaucouleurs, Antoinette; Corwin, Herold G.; Buta, Ronald J.; Paturel, Georges; Fouque, Pascal (1991). Third Reference Catalogue of Bright Galaxies. Bibcode:1991rc3..book.....D.
- "NGC 4561". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-05-22.
- Seligman, Courtney. "New General Catalog Objects: NGC 4550 - 4599". cseligman.com. Retrieved 2019-05-22.
- Frommert, Hartmut. "NGC 4561". spider.seds. Retrieved 2024-04-03.
- Araya Salvo, C.; et al. (October 2012). "Discovery of an Active Supermassive Black Hole in the Bulgeless Galaxy NGC 4561". The Astrophysical Journal. 757 (2). id. 179. arXiv:1209.1354. Bibcode:2012ApJ...757..179A. doi:10.1088/0004-637X/757/2/179.
External links
Media related to NGC 4561 at Wikimedia Commons- NGC 4561 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
