NGC 3077

NGC 3077
Ilustracja
Galaktyka NGC 3077 (HST)
Odkrywca

William Herschel

Data odkrycia

8 listopada 1801

Dane obserwacyjne (J2000)
Gwiazdozbiór

Wielka Niedźwiedzica

Typ

spiralna (Sd)

Rektascensja

10h 03m 20,3s

Deklinacja

+68° 44′ 06″

Odległość

12,4 mln ly (3,81 Mpc[2])

Przesunięcie ku czerwieni

0,000040[1]

Jasność obserwowana

10,0m

Rozmiary kątowe

5,2' × 4,7'

Alternatywne oznaczenia
UGC 5398, MCG 12-10-17, ZWG 333.13, IRAS09592+6858, PGC 29146

NGC 3077 (również PGC 29146 lub UGC 5398) – galaktyka spiralna (Sd), znajdująca się w gwiazdozbiorze Wielkiej Niedźwiedzicy w odległości około 12,4 milionów lat świetlnych od Ziemi. Została odkryta 8 listopada 1801 roku przez Williama Herschela[3].

Centralna część galaktyki, widoczne pasma pyłu (HST)

W galaktyce NGC 3077 zachodzą intensywne procesy formowania nowych gwiazd, które są skutkiem oddziaływania z sąsiednimi galaktykami Messier 81 i Messier 82. We wnętrzu galaktyki są widoczne przeplatane włókna pyłowe. Galaktyka ta należy do Grupy galaktyk M81.

Zobacz też

Przypisy

  1. ↑ NGC 3077 w bazie SIMBAD (ang.)
  2. ↑ R.B. Tully et al.: NGC 3077. [w:] Cosmicflows-2 catalog [on-line]. VizieR, 2013. [dostęp 2016-05-12]. (ang.).
  3. ↑ Courtney Seligman: NGC 3077. Celestial Atlas. [dostęp 2015-05-01]. (ang.).

Linki zewnętrzne

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NGC 3077 (captured by the Hubble Space Telescope).jpg
NGC 3077 captured by the Hubble Space Telescope. The dark clumps of material scattered around the bright nucleus of NGC 3077 are pieces of wreckage from the galaxy's interactions with its larger neighbors. NGC 3077 is a member of the M81 group of galaxies and it resides 12.5 million light-years from Earth.
NGC 3077 (HST).jpg
At first glance NGC 3077 looks like a typical, relatively peaceful elliptical galaxy. However, as this NASA/ESA Hubble Space Telescope image dramatically reveals it is actually a hotbed of very energetic star formation and the whole galaxy is laced with dusty tendrils. It lies about 13 million light-years from Earth.

NGC 3077 was first seen by William Herschel with his 47 cm telescope in England in 1801, when he was close to completing his sky surveys. It is located in the far northern sky in the constellation of Ursa Major (the Great Bear) and forms a triplet with two brighter nearby galaxies, the graceful spiral Messier 81 and the very peculiar and active starburst galaxy Messier 82.

Although overshadowed by its brighter neighbours, NGC 3077 is also very active and resembles a less dramatic version of Messier 82. Interactions between the three galaxies have stoked the fires of star formation in the core of the galaxy and the brilliant glow of many huge young star clusters at the centre of NGC 3077 dominates the Hubble image. If you look closely you can see vast numbers of individual stars in the galaxy across the entire image, as well as several, much more remote, galaxies seen through the much closer NGC 3077.

This picture was created from images taken using the Wide Field Channel on Hubble’s Advanced Camera for Surveys. It was made from images through blue (F475W, coloured blue), orange (F606W, coloured green) and near-infrared (F814W, coloured red) filters. The exposure times were about 27 minutes per filter. The field of view extends over about 3.3 arcminutes.