NGC 7496
| Galaxie NGC 7496 | |
|---|---|
.jpg) (c) ESA/Hubble, CC BY 4.0 | |
| Aufnahme des Hubble-Weltraumteleskops | |
| AladinLite | |
| Sternbild | Kranich |
| Position Äquinoktium: J2000.0, Epoche: J2000.0 | |
| Rektaszension | 23h 09m 46,9s [1] |
| Deklination | −43° 25′ 39″ [1] |
| Erscheinungsbild | |
| Morphologischer Typ | (R':)SB(rs)bc / Sy2[1] |
| Helligkeit (visuell) | 11,1 mag[2] |
| Helligkeit (B-Band) | 11,9 mag[2] |
| Winkelausdehnung | 3,3′ × 3,1′[2] |
| Positionswinkel | 2°[2] |
| Flächenhelligkeit | 13,5 mag/arcmin²[2] |
| Physikalische Daten | |
| Zugehörigkeit | LGG 472[1][3] |
| Rotverschiebung | 0,005500 ± 0,000018[1] |
| Radialgeschwindigkeit | (1649 ± 5) km/s[1] |
| Hubbledistanz H0 = 73 km/(s • Mpc) | (73 ± 5) · 106 Lj (22,3 ± 1,6) Mpc [1] |
| Durchmesser | 70.000 Lj[4] |
| Geschichte | |
| Entdeckung | John Herschel |
| Entdeckungsdatum | 5. September 1834 |
| Katalogbezeichnungen | |
| NGC 7496 • PGC 70588 • ESO 291-001 • MCG -07-47-020 • IRAS 23069-4341 • 2MASX J23094729-4325408 • SGC 230659-4342.0 • VV 771 • LDCE 1559 NED004 | |
NGC 7496 ist eine Balken-Spiralgalaxie mit aktivem Galaxienkern vom Hubble-Typ SBb im Sternbild Kranich am Südsternhimmel. Sie ist schätzungsweise 73 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 70.000 Lichtjahren.
Das Objekt wurde am 5. September 1834 von dem Astronomen John Herschel mit seinem 18,7 Zoll-Spiegelteleskop entdeckt und später von Johan Dreyer in seinen New General Catalogue aufgenommen.[5]
Infrarotaufnahme mithilfe des James Webb-Weltraumteleskops, in dieser ist der interstellare Staub zu erkennen
Ultraviolettaufnahme mithilfe von GALEX, ältere Sterne erscheinen gelblich, jüngere bläulich
Weblinks
Commons: NGC 7496 – Sammlung von Bildern, Videos und Audiodateien
- SIMBAD Astronomical Database
- Hubble Goes Galactic Birdwatching (engl.)
- A well-studied spiral (engl.)
- CDS Portal
Einzelnachweise
Auf dieser Seite verwendete Medien
NGC 7496 GALEX WikiSky.jpg
NGC 7496 galaxy by GALEX
NGC 7496 galaxy by GALEX
A well-studied spiral (potw2541a).jpg
(c) ESA/Hubble, CC BY 4.0
The celestial object that is displayed in this NASA/ESA Hubble Space Telescope Picture of the Week is NGC 7496, a galaxy located over 24 million light-years away in the constellation Grus (The Crane). NGC 7496 is a dusty spiral galaxy with a bar of stars stretching across its centre. Adding to its intrigue is an active galactic nucleus: a supermassive black hole that feasts on gas at the very heart of the galaxy.Astronomers have observed NGC 7496 at wavelengths from radio to ultraviolet in order to study the galaxy’s active galactic nucleus, dust clouds, and star formation. Hubble first observed this galaxy as part of the Physics at High Angular resolution in Nearby GalaxieS (PHANGS) programme. This programme has enlisted the abilities of several powerful astronomical observatories, including the Atacama Large Millimetre/submillimetre Array (ALMA), the Very Large Telescope, and the NASA/ESA/CSA James Webb Space Telescope, in addition to Hubble. NGC 7496 was the first galaxy in the PHANGS sample that Webb observed.Each of these observatories offers a different perspective on this well-studied galaxy. With its unique ultraviolet capabilities and fine resolution, Hubble’s view reveals young star clusters bursting with high-energy radiation. Hubble’s observations of NGC 7496 help to reveal the ages and masses of these young stars, as well as the extent to which their starlight is blocked by dust.A previous Hubble image of NGC 7496 was released in 2022. Today’s image incorporates new data that highlight the galaxy’s star clusters, which are surrounded by glowing red clouds of hydrogen gas. Astronomers collected these data in order to study nebulae like those that massive stars leave behind when they explode as supernovae and those from which newborn stars are made.[Image Description: A spiral galaxy featuring a bright, glowing core that is crossed by a horizontal bar of yellowish light. Spiral arms emerge from each end of this bar and wrap around it, creating a disc that is stretched out to the right. Some areas, mostly along the arms, glow pink where stars are forming in nebulae. Webs of dark reddish dust also follow the arms. A star in our galaxy shines prominently, off to the right.]
(c) ESA/Hubble, CC BY 4.0
The celestial object that is displayed in this NASA/ESA Hubble Space Telescope Picture of the Week is NGC 7496, a galaxy located over 24 million light-years away in the constellation Grus (The Crane). NGC 7496 is a dusty spiral galaxy with a bar of stars stretching across its centre. Adding to its intrigue is an active galactic nucleus: a supermassive black hole that feasts on gas at the very heart of the galaxy.Astronomers have observed NGC 7496 at wavelengths from radio to ultraviolet in order to study the galaxy’s active galactic nucleus, dust clouds, and star formation. Hubble first observed this galaxy as part of the Physics at High Angular resolution in Nearby GalaxieS (PHANGS) programme. This programme has enlisted the abilities of several powerful astronomical observatories, including the Atacama Large Millimetre/submillimetre Array (ALMA), the Very Large Telescope, and the NASA/ESA/CSA James Webb Space Telescope, in addition to Hubble. NGC 7496 was the first galaxy in the PHANGS sample that Webb observed.Each of these observatories offers a different perspective on this well-studied galaxy. With its unique ultraviolet capabilities and fine resolution, Hubble’s view reveals young star clusters bursting with high-energy radiation. Hubble’s observations of NGC 7496 help to reveal the ages and masses of these young stars, as well as the extent to which their starlight is blocked by dust.A previous Hubble image of NGC 7496 was released in 2022. Today’s image incorporates new data that highlight the galaxy’s star clusters, which are surrounded by glowing red clouds of hydrogen gas. Astronomers collected these data in order to study nebulae like those that massive stars leave behind when they explode as supernovae and those from which newborn stars are made.[Image Description: A spiral galaxy featuring a bright, glowing core that is crossed by a horizontal bar of yellowish light. Spiral arms emerge from each end of this bar and wrap around it, creating a disc that is stretched out to the right. Some areas, mostly along the arms, glow pink where stars are forming in nebulae. Webs of dark reddish dust also follow the arms. A star in our galaxy shines prominently, off to the right.]
JWST Dust NGC7496 II.jpg
Autor/Urheber: Judy Schmidt, Lizenz: CC BY 2.0
Autor/Urheber: Judy Schmidt, Lizenz: CC BY 2.0
Adding a new version of NGC7496 to have the same colorization as NGC628 and IC5332. The center of this galaxy has a very bright point source known as an active galactic nucleus (AGN). You can see it's quite different from the other two which do not have an actively accreting black hole.
Red (screen layer mode): MIRI F2100W Orange: MIRI F1130W Cyan: MIRI F770W
Extra overall brightness in grayscale: MIRI F1000W