NGC 5091
| Galaxie NGC 5091 | |
|---|---|
.jpg) | |
| Galaxienpaar NGC 5090 - 5091 | |
| AladinLite | |
| Sternbild | Zentaur |
| Position Äquinoktium: J2000.0, Epoche: J2000.0 | |
| Rektaszension | 13h 21m 17,7s[1] |
| Deklination | -43° 43′ 11″ [1] |
| Erscheinungsbild | |
| Morphologischer Typ | Sb pec sp [1] |
| Helligkeit (visuell) | 13,1 mag [2] |
| Helligkeit (B-Band) | 13,9 mag [2] |
| Winkelausdehnung | 1,8′ × 0,5′ [2] |
| Positionswinkel | 130° [2] |
| Flächenhelligkeit | 12,8 mag/arcmin² [2] |
| Physikalische Daten | |
| Zugehörigkeit | NGC 5011-Gruppe NGC 5090-Gruppe LGG 339 [1][3] |
| Rotverschiebung | 0.011771 ± 0.000484 [1] |
| Radialgeschwindigkeit | 3529 ± 145 km/s [1] |
| Hubbledistanz vrad / H0 | (150 ± 12) · 106 Lj (46,1 ± 3,8) Mpc [1] |
| Geschichte | |
| Entdeckung | John Herschel |
| Entdeckungsdatum | 3. Juni 1834 |
| Katalogbezeichnungen | |
| NGC 5091 • PGC 46626 • ESO 270-004 • MCG -07-27-055 • 2MASX J13211859-4343244 • SGC 131823-4327.5 • GC 3497 • h 3488 • 2MASS J13211773-4343107 • LDCE 916 NED162 | |
NGC 5091 ist eine 13,1 mag helle Spiralgalaxie vom Hubble-Typ Sb im Sternbild Zentaur am Südsternhimmel. Sie ist schätzungsweise 150 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 90.000 Lichtjahren. Wahrscheinlich bildet sie gemeinsam mit NGC 5090 ein wechselwirkendes Galaxienpaar.
Das Objekt wurde am 3. Juni 1834 vom britischen Astronomen John Herschel mit einem 18-Zoll-Spiegelteleskop entdeckt,[4] der dabei „very faint, round, 20 arcseconds. The last of four“[5] notierte. Die anderen Galaxien in dieser Gruppe sind NGC 5082, NGC 5086 und NGC 5090.
Weblinks
- NGC 5091. SIMBAD, abgerufen am 27. Mai 2015 (englisch).
- NGC 5091. DSO Browser, abgerufen am 27. Mai 2015 (englisch).
Einzelnachweise
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Phot-20d-99-hires (cropped).jpg
Autor/Urheber: European Southern Observatory, Lizenz: CC BY 4.0
A pair of galaxies NGC 5090 - 5091 in Centaurus is shown in this image. They are located at about the same distance as ESO 269-57 and may belong to the same cluster of galaxies. This is an interacting elliptical-spiral system with some evidence of tidal disruption of NGC 5091 (to the left; seen under a steep angle) by NGC 5090 (to the right). The velocity of the nucleus of NGC 5091 has been measured as 3429 km/sec, while NGC 5090 has a velocity of 3185 km/sec. NGC 5090 is associated with a strong, double radio source (PKS 1318-43). This three-colour composite (BVR) was obtained with VLT UT1/ANTU and its FORS1 instrument in the morning of March 29, 1999. A bright star in the Milky Way, just outside the field at the upper left, has produced a pattern of blue straylight. The field size is 6.8x6.8 arcmin 2. North is up and East is to the left.
Autor/Urheber: European Southern Observatory, Lizenz: CC BY 4.0
A pair of galaxies NGC 5090 - 5091 in Centaurus is shown in this image. They are located at about the same distance as ESO 269-57 and may belong to the same cluster of galaxies. This is an interacting elliptical-spiral system with some evidence of tidal disruption of NGC 5091 (to the left; seen under a steep angle) by NGC 5090 (to the right). The velocity of the nucleus of NGC 5091 has been measured as 3429 km/sec, while NGC 5090 has a velocity of 3185 km/sec. NGC 5090 is associated with a strong, double radio source (PKS 1318-43). This three-colour composite (BVR) was obtained with VLT UT1/ANTU and its FORS1 instrument in the morning of March 29, 1999. A bright star in the Milky Way, just outside the field at the upper left, has produced a pattern of blue straylight. The field size is 6.8x6.8 arcmin 2. North is up and East is to the left.
