NGC 428

Galaxie
NGC 428
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SDSS-Aufnahme
AladinLite
SternbildWalfisch
Position
Äquinoktium: J2000.0, Epoche: J2000.0
Rektaszension01h 12m 55,7s[1]
Deklination+00° 58′ 54″[1]
Erscheinungsbild
Morphologischer TypSAB(s)m / HII[1]
Helligkeit (visuell)11,3 mag[2]
Helligkeit (B-Band)11,9 mag[2]
Winkel­ausdehnung4,1′ × 3,1′[2]
Positionswinkel120°[2]
Flächen­helligkeit13,8 mag/arcmin²[2]
Physikalische Daten
Rotverschiebung0.003853 ± 0.000002[1]
Radial­geschwin­digkeit(1155 ± 1) km/s[1]
Hubbledistanz
H0 = 73 km/(s • Mpc)		(55 ± 4) · 106 Lj
(16,8 ± 1,2) Mpc [1]
Durchmesser65.000 Lj[3]
Geschichte
EntdeckungWilhelm Herschel
Entdeckungsdatum20. Dezember 1786
Katalogbezeichnungen
NGC 428 • UGC 763 • PGC 4367 • CGCG 385-028 • MCG +00-04-036 • IRAS 01103+0043 • 2MASX J01125570+0058536 • GC 238 • H II 622 • HIPASS J0112+00

NGC 428 ist eine Balken-Spiralgalaxie mit ausgedehnten Sternentstehungsgebieten vom Hubble-Typ SBm im Sternbild Walfisch südlich des Himmelsäquators. Sie ist schätzungsweise 55 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 60.000 Lj.

Im selben Himmelsareal befinden sich u. a. die Galaxien IC 83, IC 84, IC 87, IC 88.

Die Typ-Ia-Supernova SN 2013ct wurde hier beobachtet.[4]

Das Objekt wurde am 20. Dezember 1786 vom deutsch-britischen Astronomen Wilhelm Herschel entdeckt.[5]

Weblinks

Commons: NGC 428 – Sammlung von Bildern, Videos und Audiodateien

Einzelnachweise

  1. ↑ a b c d NASA/IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c d e SEDS: NGC 428
  3. ↑ NASA/IPAC
  4. ↑ Simbad
  5. ↑ Seligman

Auf dieser Seite verwendete Medien

A mess of stars.jpg
(c) ESA/Hubble, CC BY 4.0
Bursts of pink and red, dark lanes of mottled cosmic dust, and a bright scattering of stars — this NASA/ESA Hubble Space Telescope image shows part of a messy barred spiral galaxy known as NGC 428. It lies approximately 48 million light-years away from Earth in the constellation of Cetus (The Sea Monster).

Although a spiral shape is still just about visible in this close-up shot, overall NGC 428’s spiral structure appears to be quite distorted and warped, thought to be a result of a collision between two galaxies. There also appears to be a substantial amount of star formation occurring within NGC 428 — another telltale sign of a merger. When galaxies collide their clouds of gas can merge, creating intense shocks and hot pockets of gas and often triggering new waves of star formation.

NGC 428 was discovered by William Herschel in December 1786. More recently a type Ia supernova designated SN2013ct was discovered within the galaxy by Stuart Parker of the BOSS (Backyard Observatory Supernova Search) project in Australia and New Zealand, although it is unfortunately not visible in this image.

This image was captured by Hubble’s Advanced Camera for Surveys (ACS) and Wide Field and Planetary Camera 2 (WFPC2). A version of this image was entered into the Hubble’s Hidden Treasures Image Processing competition by contestants Nick Rose and the Flickr user penninecloud.
NGC428 - SDSS DR14.jpg
Autor/Urheber: Sloan Digital Sky Survey, Lizenz: CC BY 4.0
Color mapping
The sky image is obtained by Sloan Digital Sky Survey, DR14 with SciServer.

Angle of view: 4' × 4' (0.3" per pixel), north is up.

Details on the image processing pipeline: https://www.sdss.org/dr14/imaging/jpg-images-on-skyserver/