NGC 4244

Galaxie
NGC 4244
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(c) ESA/Hubble, CC BY 4.0
Hochaufgelöste Aufnahme des Hubble-Weltraumteleskops
AladinLite
SternbildJagdhunde
Position
Äquinoktium: J2000.0, Epoche: J2000.0
Rektaszension12h 17m 29,6s[1]
Deklination+37° 48′ 26″[1]
Erscheinungsbild
Morphologischer TypSA(s)cd: / sp / HII[1]
Helligkeit (visuell)10,0 mag[2]
Helligkeit (B-Band)10,7 mag[2]
Winkel­ausdehnung16,6′ × 1,9′[2]
Positionswinkel48°[2]
Flächen­helligkeit13,6 mag/arcmin²[2]
Physikalische Daten
ZugehörigkeitCanes-Venatici-I-Gruppe
NGC 4631-Gruppe
LGG 291[1][3]
Rotverschiebung0.000815 ± 0.000001[1]
Radial­geschwin­digkeit(244 ± 0) km/s[1]
Hubbledistanz
H0 = 73 km/(s • Mpc)		(12 ± 1) · 106 Lj
(3,72 ± 0,26) Mpc [1]
Durchmesser75.000 Lj[4]
Geschichte
EntdeckungWilhelm Herschel
Entdeckungsdatum17. März 1787
Katalogbezeichnungen
NGC 4244 • UGC 7322 • PGC 39422 • CGCG 187-035 • MCG +06-27-045 • IRAS 12150+3804 • 2MASX J12172965+3748255 • GC 2831 • H V 41 • h 1167 • LDCE 867 NED095

NGC 4244 ist eine Spiralgalaxie mit ausgedehnten Sternentstehungsgebieten vom Hubble-Typ Sc im Sternbild Jagdhunde nördlich der Ekliptik. Sie ist schätzungsweise 12 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 55.000 Lichtjahren.
Das Objekt ist Mitglied der Canes-Venatici-I-Gruppe, dem nächsten Nachbarn der Lokalen Gruppe, zu der u. a. M 94, M 106, NGC 4214, NGC 4395 und NGC 4449 gehören[5].

Das Objekt wurde am 17. März 1787 von dem deutsch-britischen Astronomen Wilhelm Herschel entdeckt.[6]

Commons: NGC 4244 – Sammlung von Bildern, Videos und Audiodateien

Einzelnachweise

  1. ↑ a b c d e NASA/IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c d e SEDS: NGC 4244
  3. ↑ VizieR
  4. ↑ NASA/IPAC
  5. ↑ Sterne und Weltraum Mai 2005 S. 64
  6. ↑ Seligman

Auf dieser Seite verwendete Medien

Caldwell Catalogue.jpg
Autor/Urheber: Roberto Mura, Lizenz: CC BY-SA 3.0
Caldwell Catalogue objects.
A silver needle in the sky.jpg
(c) ESA/Hubble, CC BY 4.0
A silver needle in the sky

This stunning new image from the NASA/ESA Hubble Space Telescope shows part of the sky in the constellation of Canes Venatici (The Hunting Dogs).

Although this region of the sky is not home to any stellar heavyweights, being mostly filled with stars of average brightness, it does contain five Messier objects and numerous intriguing galaxies — including NGC 5195, a small barred spiral galaxy considered to be one of the most beautiful galaxies visible, and its nearby interacting partner the Whirlpool Galaxy (heic0506a). The quirky Sunflower Galaxy is another notable galaxy in this constellation, and is one of the largest and brightest edge-on galaxies in our skies.

Joining this host of characters is spiral galaxy NGC 4244, nicknamed the Silver Needle Galaxy, shown here in a new image from Hubble. This galaxy spans some 65 000 light-years and lies around 13.5 million light-years away. It appears as a wafer-thin streak across the sky, with its loosely wound spiral arms hidden from view as we observe the galaxy side on. It is part of a group of galaxies known as the M94 Group [1].

Numerous bright clumps of gas can be seen scattered across its length, along with dark dust lanes surrounding the galaxy’s core. NGC 4244 also has a bright star cluster at its centre. Although we can make out the galaxy’s bright central region and star-spattered arms, we cannot see any more intricate structure due to the galaxy’s position; from Earth, we see it stretched out as a flattened streak across the sky.

A number of different observations were pieced together to form this mosaic, and gaps in Hubble’s coverage have been filled in using ground-based data. The Hubble observations were taken as part of the GHOSTS survey, which is scanning nearby galaxies to explore how they and their stars formed to get a more complete view of the history of the Universe. Notes

[1] Our home group, containing the Milky Way and many others, is known as the Local Group. M94 is relatively close to the Local Group.

Credit:

NASA & ESA Acknowledgement: Roelof de Jong 


About the Object
Name:	NGC 4244
Type:	• Local Universe : Galaxy : Type : Spiral
       • X - Galaxies Images/Videos
Distance:	130 million light years

Colours & filters Band	Wavelength	Telescope
Infrared I 	814 nm 	Hubble Space Telescope ACS
Optical V 	606 nm 	Hubble Space Telescope ACS
.