Arp 107

Galaxie
Arp 107
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Kombinierte Aufnahmen des Galaxienpaars Arp 107, erstellt mithilfe des Hubble-Weltraumteleskops und des Victor M. Blanco Telescope, sowie aus der Sloan Digital Sky Survey

(Links die Galaxie PGC 32620, rechts PGC 32628)

AladinLite
SternbildKleiner Löwe
Position
Äquinoktium: J2000.0, Epoche: J2000.0
Rektaszension10h 52m 16,7s[1]
Deklination+30° 03′ 55″[1]
Erscheinungsbild
Morphologischer TypSABbc? pec Sy + E1 pec?[1]
Helligkeit (visuell)14,6 / 15,2 mag
Winkel­ausdehnung2.45/1.9
0.5/0.45[1]
Physikalische Daten
Rotverschiebung0,033176 ± 0,000100[1]
Radial­geschwin­digkeit(9946 ± 30) km/s[1]
Hubbledistanz
H0 = 73 km/(s • Mpc)		(443 ± 31) · 106 Lj
(135,8 ± 9,5) Mpc
Geschichte
Katalogbezeichnungen
UGC 5984 • PGC 32628/32620 • CGCG 155-031 • Arp 107 • VV 233 • KPG 254

Arp 107 sind zwei wechselwirkende Galaxien im Sternbild Kleiner Löwe, die etwa 443 Millionen Lichtjahre von der Milchstraße entfernt sind.

Halton Arp gliederte seinen Katalog ungewöhnlicher Galaxien nach rein morphologischen Kriterien in Gruppen. Diese Galaxie gehört zu der Klasse Elliptischer Galaxien mit Verbindung zu Spiralen.

Weblinks

Commons: Arp 107 – Sammlung von Bildern, Videos und Audiodateien

Literatur

  • Jeff Kanipe und Dennis Webb: The Arp Atlas of Peculiar Galaxies – A Chronicle and Observer´s Guide, Richmond 2006, ISBN 978-0-943396-76-7

Einzelnachweise

  1. ↑ a b c d NASA/IPAC Extragalactic Database (NED)

Auf dieser Seite verwendete Medien

Arp 107, taken using NASA ESA Hubble Space Telescope’s Advanced Camera for Surveys.jpg
This Hubble Picture of the Week— taken using NASA/ESA Hubble Space Telescope’s Advanced Camera for Surveys (ACS) — shows Arp 107, a celestial object that comprises a pair of galaxies in the midst of a collision. The larger galaxy (in the left of this image) is an extremely energetic galaxy type known as a Seyfert galaxy, which house active galactic nuclei at their cores. Seyfert galaxies are notable because despite the immense brightness of the active core, radiation from the entire galaxy can be observed. This is evident in this image, where the spiraling whorls of the whole galaxy are readily visible. The smaller companion is connected to the larger by a tenuous-seeming ‘bridge’, composed of dust and gas. The colliding galactic duo lie about 465 million light-years from Earth.

Arp 107 is part of a catalogue of 338 galaxies known as the Atlas of Peculiar Galaxies, which was compiled in 1966 by Halton Arp.It was observed by Hubble as part of an observing programme that specifically sought to fill in an observational ‘gap’, by taking limited observations of members of the Arp catalogue. Part of the intention of the observing programme was to provide the public with images of these spectacular andnot-easily-defined galaxies, and as such, it has provided a rich source for Hubble Pictures of the Week. In fact, several recent releases, including this one and this one, have made use of observations from the same observing programme.

[Image Description: A pair of merging galaxies. The galaxy on the left has a large, single spiral arm curving out from the core and around to below it, with very visible glowing dust and gas. The right galaxy has a bright core but only a bit of very faint material. A broad curtain of gas connects the two galaxies’ cores and hangs beneath them. A few smallstars and galaxies are scattered around the black background.]

Credit: ESA/Hubble & NASA, J. Dalcanton