UGC 5184

Galaxie
Arp 156/UGC 5814
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Draco constellation map.png
Vorlage:Skymap/Wartung/Dra
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Hubble-Weltraumteleskop (Helligkeit) und SDSS (Farbe)
Hubble-Weltraumteleskop (Helligkeit) und SDSS (Farbe)
AladinLite
SternbildDrache
Position
Äquinoktium: J2000.0, Epoche: J2000.0
Rektaszension09h 43m 02,2s[1]
Deklination+37° 49′ 23″ [1]
Erscheinungsbild
Morphologischer TypSBb  [1]
Helligkeit (visuell)15 mag
Winkel­ausdehnung1,6′ × 0,9′
Physikalische Daten
Rotverschiebung0,021952 ± 0,000083  [1]
Radial­geschwin­digkeit(6581 ± 25) km/s  [1]
Hubbledistanz
vrad / H0		(293 ± 21) · 106 Lj
(89,9 ± 6,3) Mpc [1]
Geschichte
Katalogbezeichnungen
UGC 5184 • PGC 27789 • CGCG 181-085, 182-003 • MCG +06-22-001 • IRAS 09399+3803 • 2MASX J09430217+3749231 • Arp 156 •

UGC 5184 = Arp 156 ist eine Balken-Spiralgalaxie im Sternbild Draco, die schätzungsweise 293 Mio. Lichtjahre von der Milchstraße entfernt ist. Halton Arp gliederte seinen Katalog ungewöhnlicher Galaxien nach rein morphologischen Kriterien in Gruppen. Diese Galaxie gehört zu der Klasse Galaxien mit innerer Absorption.

Weblinks

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

Auf dieser Seite verwendete Medien

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Arrow used for star maps,
Please, don't delete, rename or change the file.
Draco constellation map.png
Autor/Urheber: unknown, Lizenz: CC-BY-SA-3.0
ARP156.png
Autor/Urheber: Judy Schmidt from USA, Lizenz: CC BY 2.0

Things have been rough for this galaxy. There are stellar streams strewn all about, the dust disk is warped all over the place, and there's hardly any star formation going on. That's what makes it so cool, though. I love the way the dust disk is pushed and pulled around, but still maintains semblance to a disk.

BONUS: If you look down at the bottom, next to the two red stars, there's the cutest little hourglass nebula I've ever seen. I think it's a planetary nebula, anyway. It's either a planetary nebula that's fairly typical, or the weirdest galaxy I've ever seen. I'll defer to Occam's razor for this one.

Edit: Some Galaxy Zoo people and Phil Plait are shooting holes in my idea that it's anything but a galaxy. Apparently there ARE galaxies that look exactly like this, such as NGC 2665. I'm just gonna redact that whole paragraph for now.

Color from SDSS again. Data for that may be found here: dr12.sdss.org/fields/name?name=arp156

NASA/ESA/SDSS/Judy Schmidt

Establishing HST's Low Redshift Archive of Interacting Systems

Luminosity: ACS/WFC F606W Red: SDSS i Green: SDSS r Blue: SDSS g

North is 37.73° clockwise from up.