NGC 4866
| Galaxie NGC 4866 | |
|---|---|
 | |
| Aufnahme des Hubble-Weltraumteleskops | |
| AladinLite | |
| Sternbild | Jungfrau |
| Position Äquinoktium: J2000.0, Epoche: J2000.0 | |
| Rektaszension | 12h 59m 27,1s[1] |
| Deklination | +14° 10′ 16″[1] |
| Erscheinungsbild | |
| Morphologischer Typ | SB(rs)bc;HII Sbrst[1] |
| Helligkeit (visuell) | 11,1 mag[2] |
| Helligkeit (B-Band) | 12,0 mag[2] |
| Winkelausdehnung | 6,4′ × 1,5′[2] |
| Positionswinkel | 87°[2] |
| Flächenhelligkeit | 13,4 mag/arcmin²[2] |
| Physikalische Daten | |
| Zugehörigkeit | Virgohaufen[1] |
| Rotverschiebung | (6631 ± 17) · 10−6[1] |
| Radialgeschwindigkeit | 1988 ± 5 km/s[1] |
| Hubbledistanz H0 = 73 km/(s • Mpc) | (87 ± 6) · 106 Lj (26,8 ± 1,9) Mpc [1] |
| Durchmesser | 95.000 Lj |
| Geschichte | |
| Entdeckung | William Herschel |
| Entdeckungsdatum | 14. Januar 1787 |
| Katalogbezeichnungen | |
| NGC 4866 • UGC 8102 • PGC 44600 • CGCG 071-092 • MCG +02-33-45 • 2MASX J12592713+1410157 • GC 3342 • H I 162 • h 1498 • HIPASS J1259+14 • LDCE 0904 NED287 | |
NGC 4866 ist eine linsenförmige Galaxie vom Hubble-Typ S0-a im Sternbild Jungfrau auf der Ekliptik. Sie ist schätzungsweise 87 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 95.000 Lj.
Das Objekt wurde am 14. Januar 1787 von William Herschel entdeckt.[3]
Siehe auch
Weblinks
- astronews.com: Bild des Tages 15. Juli 2013
- A stranger in the crowd (engl.)
Einzelnachweise
Auf dieser Seite verwendete Medien
Autor/Urheber: Credit: ESA/Hubble & NASA Acknowledgement: Gilles Chapdelaine, Lizenz: CC BY 3.0
A stranger in the crowd
The constellation of Virgo (The Virgin) is the largest of the Zodiac constellations, and the second largest overall after Hydra (The Water Snake). Its most appealing feature, however, is the sheer number of galaxies that lie within it. In this picture, among a crowd of face- and edge-on spiral, elliptical, and irregular galaxies, lies NGC 4866, a lenticular galaxy situated about 80 million light-years from Earth.
Lenticular galaxies are somewhere between spirals and ellipticals in terms of shape and properties. From the picture, we can appreciate the bright central bulge of NGC 4886, which contains primarily old stars, but no spiral arms are visible. The galaxy is seen from Earth as almost edge-on, meaning that the disc structure — a feature not present in elliptical galaxies — is clearly visible. Faint dust lanes trace across NGC 4866 in this image, obscuring part of the galaxy’s light.
To the right of the galaxy is a very bright star that appears to lie within NGC 4886’s halo. However, this star actually lies much closer to us; in front of the galaxy, along our line of sight. These kinds of perspective tricks are common when observing, and can initially deceive astronomers as to the true nature and position of objects such as galaxies, stars, and clusters.
This sharp image of NGC 4866 was captured by the Advanced Camera for Surveys, an instrument on the NASA/ESA Hubble Space Telescope. A version was entered into the Hubble’s Hidden Treasures image processing competition by contestant Gilles Chapdelaine.
Credit:
ESA/Hubble & NASA Acknowledgement: Gilles Chapdelaine
About the Object
Name: ngc 4866
Type: • Local Universe : Galaxy : Type : Lenticular
• Galaxies Images/Videos
Distance: 80 million light years
Colours & filters Band Wavelength Telescope
Infrared I 814 nm Hubble Space Telescope ACS Optical B 475 nm Hubble Space Telescope ACS.