NGC 4589

Galaxie
NGC 4589
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AladinLite
SternbildDrache
Position
Äquinoktium: J2000.0, Epoche: J2000.0
Rektaszension12h 37m 24,988s[1]
Deklination+74° 11′ 30,92″[1]
Erscheinungsbild
Morphologischer TypE2 / LINER[1]
Helligkeit (visuell)10,7 mag[2]
Helligkeit (B-Band)11,7 mag[2]
Winkel­ausdehnung3,4' × 2,8'[2]
Positionswinkel75°[2]
Flächen­helligkeit13,0 mag/arcmin²[2]
Physikalische Daten
ZugehörigkeitNGC 4291-Gruppe
NGC 4386-Gruppe
NGC 4589-Gruppe
LGG 284[1][3]
Rotverschiebung0.006605 ± 0.000047[1]
Radial­geschwin­digkeit(1980 ± 14) km/s[1]
Hubbledistanz
H0 = 73 km/(s • Mpc)		(95 ± 7) · 106 Lj
(29,1 ± 2,0) Mpc [1]
Geschichte
EntdeckungWilhelm Herschel
Entdeckungsdatum22. November 1797
Katalogbezeichnungen
NGC 4589 • UGC 7797 • PGC 42139 • CGCG 335-017 • MCG +12-12-013 • IRAS F12353+7428 • 2MASX J12372503+7411307 • GC 3127 • H I 273 • h 1374 • GALEXASC J123724.86+741130.2 • LDCE 902 NED009

NGC 4589 ist eine elliptische Galaxie mit aktivem Galaxienkern vom Hubble-Typ E2 im Sternbild Draco am Nordsternhimmel. Sie ist schätzungsweise 95 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 90.000 Lichtjahren. Gemeinsam mit NGC 4572 bildet sie ein (optisches) Galaxienpaar.

Die Typ-Ib-Supernova SN 2005cz wurde hier beobachtet.[4]

Das Objekt wurde am 22. November 1797 von Wilhelm Herschel entdeckt.[5]

NGC 4589-Gruppe (LGG 284)

GalaxieAlternativnameEntfernung/Mio. Lj
NGC 3901PGC 3638682
NGC 4127PGC 3855088
NGC 4159PGC 3877784
NGC 4291PGC 3979185
NGC 4319PGC 3998172
NGC 4331PGC 4008577
NGC 4386PGC 4037881
NGC 4589PGC 4213995
PGC 37864UGC 699695
PGC 38347UGC 708696
PGC 42601UGC 787290

Weblinks

Einzelnachweise

  1. ↑ a b c d e NASA/IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c d e SEDS: NGC 4589
  3. ↑ VizieR
  4. ↑ Simbad
  5. ↑ Seligman

Auf dieser Seite verwendete Medien

Host Galaxies of Calcium-Rich Supernovae.jpg
(c) ESA/Hubble, CC BY 4.0
These Hubble Space Telescope images show elliptical galaxies with dark, wispy dust lanes, the signature of a recent galaxy merger. The dust is the only relic of a smaller galaxy that was consumed by the larger elliptical galaxy.

The "X" in the images marks the location of supernova explosions that are associated with the galaxies. Each supernova may have been gravitationally kicked out of its host galaxy by a pair of central supermassive black holes. When two galaxies merge, so do their supermassive black holes. Astronomers suggest the supernovae were stars that were once part of double-star systems. These systems wandered too close to the binary black holes, which ejected them from their galaxies. Eventually, the stars in each system moved close enough together to trigger a supernova blast.

These outcast supernovae are located at various distances from their home galaxies. SN 2000ds (left) is at least 12,000 light-years from its galaxy, NGC 2768; SN 2005cz (right) is at least 7,000 light-years from its galaxy, NGC 4589. NGC 2768 resides 75 million light-years from Earth, and NGC 4589 is 108 million light-years away.

The supernovae are part of a census of 13 supernovae to determine why they detonated outside the cozy confines of galaxies. The study is based on archived images made by several telescopes, including Hubble.

Both galaxies were observed by Hubble's Advanced Camera for Surveys. The image of NGC 4589 was taken on Nov. 11, 2006, and the image of NGC 2768 on May 31, 2002.
NGC 4589 ACS.jpg
Autor/Urheber: Meli thev, Lizenz: CC BY-SA 4.0
NGC 4589 with Hubble

Image Credit: NASA/ESA Hubble Space Telescope

Instrument: ACS

Filters: F435W, F555W, F814W

PI: Stephen Smartt

proposal id: 10498

link proposal: https://archive.stsci.edu/proposal_search.php?mission=hst&id=10498
NGC 4589 PanS.jpg
Autor/Urheber: Donald Pelletier, Lizenz: CC BY-SA 4.0
Image created using the Aladin Sky Atlas software from the Strasbourg Astronomical Data Center and

Pan-STARRS ([https://panstarrs.stsci.edu/ Panoramic Survey Telescope And Rapid Response System)

public data.