NGC 1792

Galaxie
NGC 1792
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(c) ESA/Hubble, CC BY 4.0
Aufnahme mittels Hubble-Weltraumteleskop
AladinLite
SternbildTaube
Position
Äquinoktium: J2000.0, Epoche: J2000.0
Rektaszension05h 05m 14,4s [1]
Deklination−37° 58′ 51″ [1]
Erscheinungsbild
Morphologischer TypSA(rs)bc / HII[1]
Helligkeit (visuell)10,0 mag[2]
Helligkeit (B-Band)10,8 mag[2]
Winkel­ausdehnung5,2′ × 2,6′[2]
Positionswinkel137°[2]
Inklination°
Flächen­helligkeit12,7 mag/arcmin²[2]
Physikalische Daten
ZugehörigkeitNGC-1808-Gruppe,
LGG 127[1][3]
Rotverschiebung0,004039 ± 0,000007[1]
Radial­geschwin­digkeit(1211 ± 2) km/s[1]
Hubbledistanz
H0 = 73 km/(s • Mpc)		(46 ± 3) · 106 Lj
(14,2 ± 1,0) Mpc [1]
Absolute Helligkeitmag
MasseM☉
Durchmesser70.000 Lj[4]
Metallizität [Fe/H]{{{Metallizität}}}
Geschichte
EntdeckungJames Dunlop
Entdeckungsdatum4. Oktober 1826
Katalogbezeichnungen
NGC 1792 • PGC 16709 • ESO 305-G006 • MCG -06-12-004 • IRAS 05035-3802 • 2MASX J05051445-3758507 • SGC 050332-3802.8 • AM 0503-380 • GC 1009 • h 2730 • Dun 531 • HIPASS J0505-37

NGC 1792 ist eine Spiralgalaxie vom Hubble-Typ Sbc im Sternbild Taube am Südsternhimmel, die schätzungsweise 46 Millionen Lichtjahre von der Milchstraße entfernt ist.

Die Galaxie wurde am 4. Oktober 1826 von dem schottischen Astronomen James Dunlop entdeckt.[5]

Einzelnachweise

  1. ↑ a b c d e NASA/IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c d e SEDS: NGC 1792
  3. ↑ VizieR
  4. ↑ NASA/IPAC
  5. ↑ Seligman

Auf dieser Seite verwendete Medien

NGC1792 - GALEX.jpg
Ultraviolet image of Messier 91, taken by GALEX
NGC1792 - HST - Potw2049a.tif
(c) ESA/Hubble, CC BY 4.0
The Stellar Forge

An orange glow radiates from the centre of NGC 1792, the heart of this stellar forge. Captured by the NASA/ESA Hubble Space Telescope, this intimate view of NGC 1792 gives us some insight into this galactic powerhouse. The vast swathes of tell-tale blue seen throughout the galaxy indicate areas that are full of young, hot stars, and it is in the shades of orange, seen nearer the centre, that the older, cooler stars reside.

Nestled in the constellation of Columba (The Dove), NGC 1792 is both a spiral galaxy, and a starburst galaxy. Within starburst galaxies, stars are forming at comparatively exorbitant rates. The rate of star formation can be more than 10 times faster in a starburst galaxy than in the Milky Way. When galaxies have a large resevoir of gas, like NGC 1792, these short lived starburst phases can be sparked by galactic events such as mergers and tidal interactions. One might think that these starburst galaxies would easily consume all of their gas in a large forming event. However, supernova explosions and intense stellar winds produced in these powerful starbursts can inject energy into the gas and disperse it. This halts the star formation before it can completely deplete the galaxy of all its fuel. Scientists are actively working to understand this complex interplay between the dynamics that drive and quench these fierce bursts of star formation.

Credit:

ESA/Hubble & NASA, J. Lee Acknowledgement: Leo Shatz 

Coordinates
Position (RA):  	5 5 13.98
Position (Dec): 	-37° 58' 48.78"
Field of view:  	2.67 x 2.51 arcminutes
Orientation:    	North is 208.9° right of vertical

Colours & filters Band	Wavelength	Telescope
Ultraviolet UV	275 nm	Hubble Space Telescope WFC3
Optical U	336 nm	Hubble Space Telescope WFC3
Optical B	438 nm	Hubble Space Telescope WFC3
Optical V	555 nm	Hubble Space Telescope WFC3
Optical I	814 nm	Hubble Space Telescope WFC3
.
Phot-33b-03-fullres.jpg
Autor/Urheber: ESO, Lizenz: CC BY 4.0
Colour composite image of the starburst spiral galaxy NGC 1792 obtained with the FORS1 and FORS2 multi-mode instruments (at VLT MELIPAL and YEPUN, respectively). Its optical appearance of NGC 1792 is quite chaotic, due to the patchy distribution of dust throughout the disc of this galaxy. It is very rich in neutral hydrogen gas - fuel for the formation of new stars - and is indeed rapidly forming such stars. The galaxy is characterized by unusually luminous far-infrared radiation; this is due to dust heated by young stars. Note the numerous background galaxies in this sky field. North is up and East is to the left.

ID: phot-33b-03-fullres

Size: 2297x2306

Credit: ESO