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NGC 3079 is a barred spiral galaxy about 50 million light-years away, and located in the constellation Ursa Major. A prominent feature of this galaxy is the "bubble" forming in the very center (see picture below). The supermassive black hole at the core has a mass of 2.4+2.4
−1.2×106 M☉.[3]

NGC 3079
A Hubble Space Telescope (HST) image of NGC 3079.
Observation data (J2000 epoch)
ConstellationUrsa Major
Right ascension10h 01m 57.8s[1]
Declination+55° 40′ 47″[1]
Redshift1116 ± 1 km/s[1]
Distance50 Mly[2]
Apparent magnitude (V)11.5[1]
Characteristics
TypeSB(s)c[1]
Apparent size (V)7′.9 × 1′.4[1]
Other designations
UGC 5387,[1] PGC 29050[1]

Center Bubble


The bubble forming in the center of NGC 3079 is believed to be about 3000 light-years wide and to rise more than 3500 light-years above the disc of the galaxy. It is speculated that the bubble is being formed by particles streaming at high speeds, which were in turn caused by a large burst of star formation. This current bubble is thought to have been created about one million years ago, and computer modeling suggests that there is an ongoing cycle of forming bubbles, with a new bubble forming approximately every 10 million years.

Hubble space telescope, (visible light) Seyfert galaxy NGC 3079. This image shows the lumpy bubble of hot gas located at the center of the NGC 3079 galaxy's disk
Hubble space telescope, (visible light) Seyfert galaxy NGC 3079. This image shows the lumpy bubble of hot gas located at the center of the NGC 3079 galaxy's disk

See also



References


  1. "NASA/IPAC Extragalactic Database". Results for NGC 3079. Retrieved 2006-11-25.
  2. "Burst of Star Formation Drives Bubble in Galaxy's Core - Fast Facts". Retrieved 2007-10-06.
  3. Graham, Alister W. (November 2008), "Populating the Galaxy Velocity Dispersion - Supermassive Black Hole Mass Diagram: A Catalogue of (Mbh, σ) Values", Publications of the Astronomical Society of Australia, 25 (4): 167–175, arXiv:0807.2549, Bibcode:2008PASA...25..167G, doi:10.1071/AS08013, S2CID 89905.


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На других языках

[de] NGC 3079

NGC 3079 ist eine Balken-Spiralgalaxie mit aktivem Galaxienkern vom Hubble-Typ E3 im Sternbild Großer Bär am Nordsternhimmel. Sie ist schätzungsweise 53 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 120.000 Lichtjahren.
- [en] NGC 3079

[es] NGC 3079

NGC 3079 es una galaxia espiral que se encuentra a 50 millones de años luz (aproximadamente 15,38 megaparsecs) de distancia en dirección a la constelación de la Osa Mayor. Fue descubierta el 14 de abril de 1789 por el astrónomo William Herschel.

[ru] NGC 3079

NGC 3079 (другие обозначения — UGC 5387, MCG 9-17-10, ZWG 266.8, IRAS09585+5555, PGC 29050) — спиральная галактика с перемычкой (SBc) в созвездии Большая Медведица.


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