NGC 4013

NGC 4013
HST closeup view of NGC 4013
Observation data (J2000 epoch)
ConstellationUrsa Major
Right ascension11h 58m 31.13s
Declination+43° 56′ 50.1″
Redshift831 ± 1 km/s
Distance60.6 ± 8.1 Mly
(18.6 ± 2.5 Mpc)
Apparent magnitude (V)12.1B
Characteristics
TypeSBa
Size30.33 kpc (98,900 ly) (diameter; 25.0 mag/arcsec2 B-band isophote)
Apparent size (V)5.2' x 1.0'
Other designations
UGC 6963, PGC 37691 LEDA 37691 2MFGC 9412

IRAS 11559+4413 2MASX J11583141+4356492

MCG+07-25-009 UZC J115831.5+435651

NGC 4013 is an edge-on barred spiral galaxy about 55 million light-years away in the constellation Ursa Major. The disk of NGC 4013 shows a distinct "peanut"-shaped bulge in long exposure photographs that N-body computer simulations suggest is consistent with a stellar bar seen perpendicular to the line of sight.

Infrared image of the galaxy showing a ring of heavy star formation

A recent deep color image of NGC 4013 revealed a looping tidal stream of stars extending over 80 thousand light-years from the Galactic Center. This structure is thought to be the remnants of a smaller galaxy that was torn apart by tidal forces as it collided with NGC 4013.

NGC 4013 is a member of the Ursa Major Cluster. It is a member of the NGC 4111 Group, which is part of the Ursa Major Cloud and is the second largest group in the cloud after the NGC 3992 Group.

Supernova imposter

In January, 1991, M. Shaw reported an apparent supernova seen on an image taken December 30, 1989, at apparent magnitude 12, which was then given the designation SN 1989Z. However, later analysis suggested that this object was actually a foreground variable star, or an outburst from a cataclysmic variable star.

See also

References

  1. 1 2 3 4 5 6 7 8 9 "NASA/IPAC Extragalactic Database". Results for NGC 4013. Retrieved 2006-11-25.
  2. ↑ "Distance Results for NGC 4013". NASA/IPAC Extragalactic Database. Retrieved 2010-06-13.
  3. 1 2 3 4 5 6 "SIMBAD". Results for NGC 4013. Retrieved 2009-12-25.
  4. ↑ Combes, F. and Sanders, R.H., "Formation and properties of persisting stellar bars", Astronomy and Astrophysics, vol. 96, no. 1-2, Mar. 1981, p. 164-173.
  5. ↑ D. Martínez-Delgado (IAC); M. Pohlen (Cardiff); R. Jay GaBany (Blackbird Obs); S. Majewski (Univ Virginia); et al. (2009). "Discovery of a Giant Stellar Tidal Stream Around the Disk Galaxy NGC 4013". Astrophysical Journal. 692 (2): 955–963. arXiv:0801.4657. Bibcode:2009ApJ...692..955M. doi:10.1088/0004-637X/692/2/955. S2CID 14957582.
  6. ↑ Rueff, Katherine M.; Howk, J. Christopher; Pitterle, Marissa; Hirschauer, Alec S.; Fox, Andrew J.; Savage, Blair D. (2013-01-31). "The Relationship Between the Dense Neutral and Diffuse Ionized Gas in the Thick Disks of Two Edge-On Spiral Galaxies". The Astronomical Journal. 145 (3): 62. arXiv:1301.0325. Bibcode:2013AJ....145...62R. doi:10.1088/0004-6256/145/3/62. ISSN 0004-6256. S2CID 119277886.
  7. ↑ Makarov, Dmitry; Karachentsev, Igor (2011-04-21). "Galaxy groups and clouds in the local (z∼ 0.01) Universe: Galaxy groups in the local Universe". Monthly Notices of the Royal Astronomical Society. 412 (4): 2498–2520. arXiv:1011.6277. doi:10.1111/j.1365-2966.2010.18071.x.
  8. ↑ Karachentsev, I. D.; Nasonova, O. G.; Courtois, H. M. (2013-03-01). "Anatomy of Ursa Majoris". Monthly Notices of the Royal Astronomical Society. 429 (3): 2264–2273. arXiv:1211.5975. doi:10.1093/mnras/sts494. ISSN 1365-2966.
  9. ↑ Pak, Mina; Rey, Soo-Chang; Lisker, Thorsten; Lee, Youngdae; Kim, Suk; Sung, Eon-Chang; Jerjen, Helmut; Chung, Jiwon (2014-09-29). "The properties of early-type galaxies in the Ursa Major cluster". Monthly Notices of the Royal Astronomical Society. 445 (1): 630–647. arXiv:1409.3070. doi:10.1093/mnras/stu1722. ISSN 0035-8711.
  10. ↑ Ai, Mei; Zhu, Ming; Yu, Nai-ping; Xu, Jin-long; Liu, Xiao-lan; Jing, Yingjie; Jiao, Qian; Liu, Yao; Zhang, Chuan-peng; Wang, Jie; Jiang, Peng (2025-04-01). "Formation of the Dark Matter–Deficient S0 Galaxy NGC 4111 under the Tidal Interactions". The Astrophysical Journal Letters. 982 (2): L52. arXiv:2503.05171. Bibcode:2025ApJ...982L..52A. doi:10.3847/2041-8213/adbeee. ISSN 2041-8205.
  11. ↑ Shaw, M. (1991). "Supernova 1989Z in NGC 4013". International Astronomical Union Circular (5162): 1. Bibcode:1991IAUC.5162....1S.
  12. ↑ "List of Supernovae". Harvard-Smithsonian Center for Astrophysics (IAU). Retrieved 2010-07-14.
  13. ↑ Bettoni, D.; Hjorth, J.; Benetti, S. (1998). "Variable Star near NGC 4013 = Supernova 1989Z?". International Astronomical Union Circular (6911): 1. Bibcode:1998IAUC.6911....1B.
  14. ↑ Kushida, R.; Nakano, S.; Kushida, Y.; Aoki, M. (1998). "Star near NGC 4013 = Supernova 1989Z?". International Astronomical Union Circular (6920): 2. Bibcode:1998IAUC.6920....2K.