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NGC 5643
NGC 5643 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
Constellation	Lupus
Right ascension	14 32 40.7
Declination	−44° 10′ 28″
Redshift	1199 ± 2 km/s
Distance	41 Mly (12.5 Mpc)
Apparent magnitude (V)	10.7
Characteristics
Type	SAB(rs)c
Apparent size (V)	4.6′ × 4.0′
Other designations
ESO 272- G 016, MCG -07-30-003, PGC 51969

NGC 5643 is an intermediate spiral galaxy in the constellation Lupus. Based on the tip of the red-giant branch distance indicator, it is located at a distance of about 40 million light-years (12.5 megaparsecs). NGC 5643 has an active galactic nucleus and is a type II Seyfert galaxy.

Observation history

The galaxy was first discovered by James Dunlop on May 10, 1826, with his 9-inch reflector telescope, who described it as exceedingly faint. The galaxy was also spotted by John Herschel and added to the General Catalogue of Nebulae and Clusters as number 3572. The galaxy is located only 15 degrees from the galactic plane.

Structure

NGC 5643 is a grand design spiral galaxy, with two well-defined, symmetric arms. In the circumnuclear region are other dust spirals, but the two main dust arms are wider. The galaxy is seen nearly face on, at an inclination of ~ 27°.

Active galactic nucleus

The galaxy has a low-luminosity active galactic nucleus of Seyfert 2 type and is also a luminous infrared galaxy. The galaxy has a double sided diffuse radiojet. The galaxy exhibits an extended emission line region elongated in a direction close to the radio position angle of 87°±3°. Chris Simpson et al. analysed images takes from the WFPC2 camera of the Hubble Space Telescope in λ5007 and Hα and found emission extending eastward for at least 1.8 kpc and in the /Hα map a well-defined V-shaped structure that they identified as the projection of a tridimensional ionisation cone, which shares the same axis with the radio emission. A dust lane perpendicular to this axis obstructs the nucleus from direct view. A disk of material was found when the data cubes of VLT were analysed. It is aligned with the nucleus and circles it and possibly provides gas to the active galactic nucleus. The mass of the supermassive black hole has been estimated based on the galaxy stellar velocity dispersion to be 10 M⊙. It has been proposed that the gas outflow has led to star formation on two locations on the bar of the galaxy which lie at the location where the gas from the nucleus encounters the dense material of the bar.

Via observations of the galaxy from the XMM Newton telescope in 2009, the galaxy is found to have a Compton–thick active galactic nucleus. Also the galaxy emits soft X-rays, mainly from photoionized matter. The presence of the compton-thick column which obstructs the nucleus was confirmed from observations by NuSTAR.

Ultraluminous X-ray source

In 2004, Guainazzi et al. detected in the images from XMM-Newton an ultraluminous X-ray source, named NGC 5643 ULX1, located within 0.8 arcminutes from the nucleus. The source outshone the nucleus in X-rays and if it is located within NGC 5643 its luminosity is over 10 erg/s. Its luminosity is variable. The X-rays could be produced either by an advection dominated disc or a Comptonising corona and the X-ray source is considered to be a black hole of stellar origin of approximately 30 solar masses.

Supernovae

NGC 5643 has been the home of two supernovae:

• SN 2013aa (type Ia, mag. 11.9) was discovered by Stuart Parker from New Zealand on 13 February 2013, as part of the Backyard Observatory Supernova Search. It was classified as a type Ia a few days before maximum brightness. It got as bright as magnitude 11.3, making it the brightest supernova of the year 2013.
• SN 2017cbv (type Ia, mag. 16.0451) was discovered by the Distance Less Than 40 Mpc Survey (DLT40) on 10 March 2017. It increased in magnitude from 15.8 to 14.8 within the next day. It got as bright as magnitude 11.5, making it the brightest supernova of the year 2017.

Nearby galaxies

NGC 5643 has a satellite dwarf galaxy, ESO 273-014. NGC 5643 is the foremost member of a small galaxy group that also includes NGC 5530.

Image gallery

• NGC 5643 imaged by the Hubble Space Telescope

References

1. ^ "NASA/IPAC Extragalactic Database". Results for NGC 5643. Retrieved 2016-01-18.
2. ^ Hoyt, Taylor J.; Beaton, Rachael L.; Freedman, Wendy L.; Jang, In Sung; Lee, Myung Gyoon; Madore, Barry F.; Monson, Andrew J.; Neeley, Jillian R.; Rich, Jeffrey A.; Seibert, Mark (2021). "The Carnegie Chicago Hubble Program X: Tip of the Red Giant Branch Distances to NGC 5643 and NGC 1404". The Astrophysical Journal. 915 (1): 34. arXiv:2101.12232. Bibcode:2021ApJ...915...34H. doi:10.3847/1538-4357/abfe5a. S2CID 231728270.
3. O'Meara, Stephen James (2013). Southern gems. Cambridge: Cambridge University Press. p. 272. ISBN 978-1107015012.
4. Martini, Paul; Regan, Michael W.; Mulchaey, John S.; Pogge, Richard W. (June 2003). "Circumnuclear Dust in Nearby Active and Inactive Galaxies. I. Data". The Astrophysical Journal Supplement Series. 146 (2): 353–406. arXiv:astro-ph/0212396. Bibcode:2003ApJS..146..353M. doi:10.1086/367817. S2CID 15161097.
5. "Hidden from view". www.eso.org. Retrieved 28 May 2018.
6. Simpson, Chris; Wilson, A. S.; Bower, Gary; Heckman, T. M.; Krolik, J. H.; Miley, G. K. (January 1997). "A One-sided Ionization Cone in the Seyfert 2 Galaxy NGC 5643". The Astrophysical Journal. 474 (1): 121–128. Bibcode:1997ApJ...474..121S. doi:10.1086/303466.
7. Menezes, R. B.; da Silva, P.; Ricci, T. V.; Steiner, J. E.; May, D.; Borges, B. W. (16 April 2015). "A treatment procedure for VLT/SINFONI data cubes: application to NGC 5643". Monthly Notices of the Royal Astronomical Society. 450 (1): 369–396. arXiv:1504.02933. Bibcode:2015MNRAS.450..369M. doi:10.1093/mnras/stv629.
8. Goulding, A. D.; Alexander, D. M.; Lehmer, B. D.; Mullaney, J. R. (21 July 2010). "Towards a complete census of active galactic nuclei in nearby galaxies: the incidence of growing black holes". Monthly Notices of the Royal Astronomical Society. 406 (1): 597–611. arXiv:1003.3015. Bibcode:2010MNRAS.406..597G. doi:10.1111/j.1365-2966.2010.16700.x. S2CID 53579415.
9. Cresci, G.; Marconi, A.; Zibetti, S.; Risaliti, G.; Carniani, S.; Mannucci, F.; Gallazzi, A.; Maiolino, R.; Balmaverde, B.; Brusa, M.; Capetti, A.; Cicone, C.; Feruglio, C.; Bland-Hawthorn, J.; Nagao, T.; Oliva, E.; Salvato, M.; Sani, E.; Tozzi, P.; Urrutia, T.; Venturi, G. (8 October 2015). "The MAGNUM survey: positive feedback in the nuclear region of NGC 5643 suggested by MUSE". Astronomy & Astrophysics. 582: A63. arXiv:1508.04464. Bibcode:2015A&A...582A..63C. doi:10.1051/0004-6361/201526581. S2CID 55222207.
10. Matt, G.; Bianchi, S.; Marinucci, A.; Guainazzi, M.; Iwawasa, K.; Jimenez Bailon, E. (2 August 2013). "X-ray observations of the Compton-thick Seyfert 2 galaxy, NGC 5643". Astronomy & Astrophysics. 556: A91. arXiv:1307.1591. Bibcode:2013A&A...556A..91M. doi:10.1051/0004-6361/201321293. S2CID 53347282.
11. Annuar, A.; Gandhi, P.; Alexander, D. M.; Lansbury, G. B.; Arévalo, P.; Ballantyne, D. R.; Baloković, M.; Bauer, F. E.; Boggs, S. E.; Brandt, W. N.; Brightman, M.; Christensen, F. E.; Craig, W. W.; Moro, A. Del; Hailey, C. J.; Harrison, F. A.; Hickox, R. C.; Matt, G.; Puccetti, S.; Ricci, C.; Rigby, J. R.; Stern, D.; Walton, D. J.; Zappacosta, L.; Zhang, W. (4 December 2015). "NuSTAR Observations of the Compton-thick Active Galactic Nucleus and Ultraluminous X-ray Source Candidate in NGC 5643". The Astrophysical Journal. 815 (1): 36. arXiv:1509.03322. Bibcode:2015ApJ...815...36A. doi:10.1088/0004-637X/815/1/36. S2CID 11400958.
12. Guainazzi, M.; Rodriguez-Pascual, P.; Fabian, A. C.; Iwasawa, K.; Matt, G. (November 2004). "Unveiling the nature of the highly obscured active galactic nucleus in NGC 5643 with". Monthly Notices of the Royal Astronomical Society. 355 (1): 297–306. arXiv:astro-ph/0408300. Bibcode:2004MNRAS.355..297G. doi:10.1111/j.1365-2966.2004.08317.x. S2CID 119067322.
13. Pintore, Fabio; Zampieri, Luca; Sutton, Andrew D.; Roberts, Timothy P.; Middleton, Matthew J.; Gladstone, Jeanette C. (11 June 2016). "The ultraluminous X-ray source NGC 5643 ULX1: a large stellar mass black hole accreting at super-Eddington rates?". Monthly Notices of the Royal Astronomical Society. 459 (1): 455–466. arXiv:1603.05542. Bibcode:2016MNRAS.459..455P. doi:10.1093/mnras/stw669.
14. Parker, S.; Amorim, A.; Parrent, J. T.; Sand, D.; Valenti, S.; Graham, M. L.; Howell, D. A. (2013). "Supernova 2013aa in NGC 5643 = PSN J14323388-4413278". Central Bureau Electronic Telegrams. 3416: 1. Bibcode:2013CBET.3416....1P.
15. "SN 2013aa". Transient Name Server. IAU. Retrieved 6 December 2024.
16. Sternberg, A.; Gal-Yam, A.; Simon, J. D.; Patat, F.; Hillebrandt, W.; Phillips, M. M.; Foley, R. J.; Thompson, I.; Morrell, N.; Chomiuk, L.; Soderberg, A. M.; Yong, D.; Kraus, A. L.; Herczeg, G. J.; Hsiao, E. Y.; Raskutti, S.; Cohen, J. G.; Mazzali, P. A.; Nomoto, K. (25 July 2014). "Multi-epoch high-spectral-resolution observations of neutral sodium in 14 Type Ia supernovae". Monthly Notices of the Royal Astronomical Society. 443 (2): 1849–1860. arXiv:1311.3645. Bibcode:2014MNRAS.443.1849S. doi:10.1093/mnras/stu1202.
17. Bishop, David. "Bright Supernovae - 2013". Rochester Astronomy. Retrieved 8 December 2024.
18. Tartaglia, L.; Sand, D.; Wyatt, S.; Valenti, S.; Bostroem, K. A.; Reichart, D. E.; Haislip, J. B.; Kouprianov, V. (2017). "The discovery of DLT17u/AT 2017cbv". The Astronomer's Telegram. 10158: 1. Bibcode:2017ATel10158....1T.
19. "SN 2017cbv". Transient Name Server. IAU. Retrieved 6 December 2024.
20. Coulter, D. A.; Kilpatrick, C. D.; Foley, R. J.; Anais, J.; Phillips, M. M.; Drout, M. R.; Madore, B. F.; Piro, A. L.; Shappee, B. J.; Hsiao, E. Y. (2017). "Swope Photometric Observations of SN 2017cbv = DLT17u". The Astronomer's Telegram. 10167: 1. Bibcode:2017ATel10167....1C.
21. Bishop, David. "Bright Supernovae - 2017". Rochester Astronomy. Retrieved 9 December 2024.
22. Karachentsev, Igor D.; Kaisina, Elena I.; Makarov, Dmitry I. (3 December 2013). "Suites of Dwarfs Around Nearby Giant Galaxies". The Astronomical Journal. 147 (1): 13. arXiv:1310.6838. Bibcode:2014AJ....147...13K. doi:10.1088/0004-6256/147/1/13. S2CID 119245124.
23. Makarov, Dmitry; Karachentsev, Igor (21 April 2011). "Galaxy groups and clouds in the local (z~ 0.01) Universe". Monthly Notices of the Royal Astronomical Society. 412 (4): 2498–2520. arXiv:1011.6277. Bibcode:2011MNRAS.412.2498M. doi:10.1111/j.1365-2966.2010.18071.x. S2CID 119194025.

External links

• NGC 5643 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

v t e Constellation of Lupus
List of stars in Lupus Lupus in Chinese astronomy
Stars	Bayer α β γ δ ε ζ η θ ι κ κ λ μ ν ν ξ ξ ο π ρ σ τ τ υ φ φ χ ψ ψ ω Flamsteed 1 (i) 2 (f) Variable RU EX GG GQ HR II IL IM KT (d) V407 HR 5364 5401 5651 (e) 5724 (k) 5825 (g) 5943 5967 HD 134004 142527 Other Gliese 588 HIP 70849 Lupus-TR-3 SAO 206462 SSSPM J1549-3544 WASP-132
Exoplanets GQ Lupi b HIP 70849 b Lupus-TR-3b WASP-178b
Star clusters NGC 5749 NGC 5822 NGC 5824 NGC 5927 NGC 5986
Nebulae IC 4406 NGC 5882
Galaxies NGC 5643
Category

• Barred spiral galaxies
• Seyfert galaxies
• Lupus (constellation)
• NGC objects
• Principal Galaxies Catalogue objects
• ESO objects
• MCG objects
• Galaxies discovered in 1826
• Astronomical objects discovered in 1826
• Discoveries by James Dunlop