NGC 1961
| Galaxie NGC 1961 | |
|---|---|
 | |
| Aufnahme mit einem 60-cm-Teleskop | |
| AladinLite | |
| Sternbild | Giraffe |
| Position Äquinoktium: J2000.0, Epoche: J2000.0 | |
| Rektaszension | 05h 42m 04,648s [1] |
| Deklination | +69° 22′ 42,38″ [1] |
| Erscheinungsbild | |
| Morphologischer Typ | SAB(rs)c LINER[1] |
| Helligkeit (visuell) | 10,9 mag[2] |
| Helligkeit (B-Band) | 11,7 mag[2] |
| Winkelausdehnung | 4,5′ × 3,1′[2] |
| Positionswinkel | 85°[2] |
| Flächenhelligkeit | 13,6 mag/arcmin²[2] |
| Physikalische Daten | |
| Zugehörigkeit | NGC 1961-Gruppe, LGG 132[1][3] |
| Rotverschiebung | 0,013122 ± 0,000003[1] |
| Radialgeschwindigkeit | (3934 ± 1) km/s[1] |
| Hubbledistanz H0 = 73 km/(s • Mpc) | (181 ± 13) · 106 Lj (55,6 ± 3,9) Mpc [1] |
| Durchmesser | 235.000 Lj[4] |
| Geschichte | |
| Entdeckung | Wilhelm Herschel |
| Entdeckungsdatum | 3. Dezember 1788 |
| Katalogbezeichnungen | |
| NGC 1961 • IC 2133 • UGC 3334 • PGC 17625 • CGCG 329-008 • MCG +12-06-007 • IRAS 05365+6921 • Arp 184 • GC 1167 • H III 747 • | |
NGC 1961 = IC 2133 = Arp 184 ist eine Balkenspiralgalaxie vom Hubble-Typ SAB(rs)c im Sternbild Giraffe am Nordsternhimmel. Die Spiralarme sind auf der nördlichen Seite stark verzerrt und die Galaxie weist in weiten Gebieten eine rege Sternentstehung auf. Sie ist schätzungsweise 182 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 235.000 Lichtjahren.
Halton Arp gliederte seinen Katalog ungewöhnlicher Galaxien nach rein morphologischen Kriterien in Gruppen. Diese Galaxie gehört zu der Klasse Galaxien mit schmalen Filamenten.
Das Objekt wurde am 3. Dezember 1788 von dem deutsch-britischen Astronomen Friedrich Wilhelm Herschel entdeckt.[5]
Am 22. Dezember 2001 wurde hier die Supernova SN 2001is entdeckt.[6]
Die Galaxie NGC 1961 aufgenommen von GALEX
(c) ESA/Hubble, CC BY 4.0Zentralbereich, detailliert aufgenommen mithilfe des Hubble-Weltraumteleskops
NGC 1961-Gruppe (LGG 132)
| Galaxie | Alternativname | Entfernung/Mio. Lj |
|---|---|---|
| PGC 17456 | UGC 3319 | 194 |
| NGC 1961 | PGC 17625 | 182 |
| PGC 17692 | UGC 3342 | 184 |
| PGC 18161 | UGC 3379 | 189 |
| PGC 17645 | CGCG 329-10 | 185 |
| PGC 17757 | MCG +12-6-13 | 200 |
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
- König, Michael & Binnewies, Stefan (2019): Bildatlas der Galaxien: Die Astrophysik hinter den Astrofotografien, Stuttgart: Kosmos, S. 222
Weblinks
Commons: NGC 1961 – Sammlung von Bildern, Videos und Audiodateien
Einzelnachweise
Auf dieser Seite verwendete Medien
N1961s.jpg
Autor/Urheber: Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona, Lizenz: CC BY-SA 3.0 us
NGC 1961
Autor/Urheber: Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona, Lizenz: CC BY-SA 3.0 us
NGC 1961
Picture Details:
Optics 24-inch RC Optical Systems Telescope Camera SBIG STL11000 CCD Camera Filters Custom Scientific Dates January 5th 2010 Location Mount Lemmon SkyCenter Exposure LRGB: 135:60:40:50 Acquisition ACP Observatory Control Software (DC-3 Dreams),TheSky (Software Bisque), Maxim DL/CCD (Cyanogen) Processing CCDStack (CCDWare), Mira (MiraMetrics), Photoshop CS3 (Adobe)Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona
NGC 1961 GALEX WikiSky.jpg
NGC 1961 galaxy by GALEX
NGC 1961 galaxy by GALEX
.jpg)
Snapshot of a peculiar spiral (potw2517a).jpg
(c) ESA/Hubble, CC BY 4.0
A beautiful but skewed spiral galaxy dazzles in today’s NASA/ESA Hubble Space Telescope Picture of the Week. This galaxy, called Arp 184 or NGC 1961, sits about 190 million light-years away from Earth in the constellation Camelopardalis (The Giraffe). The name Arp 184 comes from the Atlas of Peculiar Galaxies, which was compiled by astronomer Halton Arp in 1966. The 338 galaxies in the atlas are oddly shaped, tending to be neither entirely elliptical nor entirely spiral-shaped. Many of the galaxies are in the process of interacting with other galaxies, while others are dwarf galaxies without well-defined structures. Arp 184 earned its spot in the catalogue thanks to its single broad, star-speckled spiral arm that appears to stretch toward us. The galaxy’s far side sports a few wisps of gas and stars but lacks a similarly impressive spiral arm.This Hubble image combines data from three Snapshot observing programmes, which are composed of short observations that can be slotted into time gaps between other proposals. One of the three programmes targeted Arp 184 for its peculiar appearance. This programme surveyed galaxies listed in the Atlas of Peculiar Galaxies as well as A Catalogue of Southern Peculiar Galaxies and Associations, a similar catalogue compiled by Halton Arp and Barry Madore.The remaining two programmes were designed to check up on the aftermath of fleeting astronomical events like supernovae and tidal disruption events — when a star is ripped apart after wandering too close to a supermassive black hole. Since Arp 184 has hosted four known supernovae in the past three decades, it’s a rich target for a supernova hunt.[Image Description: A spiral galaxy seen at a skewed angle. Its centre is a bright spot radiating light. A thick, stormy disc of material surrounds this, with swirling strands of dark dust and bright spots of star formation strewn through the disc. A large spiral arm extends from the disc towards the viewer. Some foreground stars are visible atop the galaxy.]
(c) ESA/Hubble, CC BY 4.0
A beautiful but skewed spiral galaxy dazzles in today’s NASA/ESA Hubble Space Telescope Picture of the Week. This galaxy, called Arp 184 or NGC 1961, sits about 190 million light-years away from Earth in the constellation Camelopardalis (The Giraffe). The name Arp 184 comes from the Atlas of Peculiar Galaxies, which was compiled by astronomer Halton Arp in 1966. The 338 galaxies in the atlas are oddly shaped, tending to be neither entirely elliptical nor entirely spiral-shaped. Many of the galaxies are in the process of interacting with other galaxies, while others are dwarf galaxies without well-defined structures. Arp 184 earned its spot in the catalogue thanks to its single broad, star-speckled spiral arm that appears to stretch toward us. The galaxy’s far side sports a few wisps of gas and stars but lacks a similarly impressive spiral arm.This Hubble image combines data from three Snapshot observing programmes, which are composed of short observations that can be slotted into time gaps between other proposals. One of the three programmes targeted Arp 184 for its peculiar appearance. This programme surveyed galaxies listed in the Atlas of Peculiar Galaxies as well as A Catalogue of Southern Peculiar Galaxies and Associations, a similar catalogue compiled by Halton Arp and Barry Madore.The remaining two programmes were designed to check up on the aftermath of fleeting astronomical events like supernovae and tidal disruption events — when a star is ripped apart after wandering too close to a supermassive black hole. Since Arp 184 has hosted four known supernovae in the past three decades, it’s a rich target for a supernova hunt.[Image Description: A spiral galaxy seen at a skewed angle. Its centre is a bright spot radiating light. A thick, stormy disc of material surrounds this, with swirling strands of dark dust and bright spots of star formation strewn through the disc. A large spiral arm extends from the disc towards the viewer. Some foreground stars are visible atop the galaxy.]