NGC 4753
| Galaxie NGC 4753 | |
|---|---|
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| Aufnahme mit dem südlichen Teleskop des Gemini-Observatoriums | |
| AladinLite | |
| Sternbild | Jungfrau |
| Position Äquinoktium: J2000.0, Epoche: J2000.0 | |
| Rektaszension | 12h 52m 22,1s[1] |
| Deklination | −01° 11′ 59″[1] |
| Erscheinungsbild | |
| Morphologischer Typ | I0[1] |
| Helligkeit (visuell) | 9,9 mag[2] |
| Helligkeit (B-Band) | 10,9 mag[2] |
| Winkelausdehnung | 6,0′ × 2,8′[2] |
| Positionswinkel | 80°[2] |
| Flächenhelligkeit | 12,8 mag/arcmin²[2] |
| Physikalische Daten | |
| Zugehörigkeit | Virgo-Cluster NGC 4753-Gruppe NGC 4643-Gruppe LGG 315[1][3] |
| Rotverschiebung | 0.003879 ± 0.000017[1] |
| Radialgeschwindigkeit | (1163 ± 5) km/s[1] |
| Hubbledistanz H0 = 73 km/(s • Mpc) | (48 ± 3) · 106 Lj (14,8 ± 1,0) Mpc [1] |
| Geschichte | |
| Entdeckung | Wilhelm Herschel |
| Entdeckungsdatum | 22. Februar 1784 |
| Katalogbezeichnungen | |
| NGC 4753 • UGC 8009 • PGC 43671 • CGCG 015-029 • MCG +00-33-016 • IRAS 12498-0055 • 2MASX J12522211-0111588 • GC 3273 • H I 16 • h 1461 • LDCE 904 NED267 • EVCC 2237 | |
NGC 4753 ist eine Irreguläre Galaxie vom Hubble-Typ I0 im Sternbild Jungfrau auf der Ekliptik. Sie ist schätzungsweise 48 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 100.000 Lichtjahren. Die Galaxie ist Namensgeber der NGC 4753-Gruppe und möglicherweise ein Mitglied des Virgo-Galaxienhaufens.
Das Objekt wurde am 22. Februar 1784 von Wilhelm Herschel mit einem 18,7–Zoll–Spiegelteleskop entdeckt,[4] der sie dabei mit „cB vL iF vgmbM“[5] beschrieb.
In NGC 4753 wurden bisher zwei Typ-Ia-Supernovae beobachtet: am 18. Juni 1965 SN 1965i und am 4. April 1983 SN 1983g.[6] Anhand letzterer konnte die Entfernung zu NGC 4753 auf 8,7 ± 1,6 Millionen Parsec eingeschätzt werden.[7]
Die verdrehte Struktur der Staubbahnen deutet auf eine Zusammenschluss mit einer Zwerggalaxie vor etwa 1,3 Milliarden Jahren hin.[8]
Rekonstruktion verschiedener Ansichten der inneren Struktur
(c) ESA/Hubble, CC BY 4.0Hochaufgelöste Aufnahme des Zentrums, erstellt mit dem Hubble-Weltraumteleskop
NGC 4753-Gruppe (LGG 315)
| Galaxie | Alternativname | Entfernung/Mio. Lj |
|---|---|---|
| NGC 4643 | PGC 42797 | 56 |
| NGC 4713 | PGC 43413 | 26? |
| NGC 4771 | PGC 43784 | 47 |
| NGC 4753 | PGC 43671 | 48 |
| NGC 4808 | PGC 44086 | 31 |
| NGC 4845 | PGC 44392 | 52 |
| NGC 4900 | PGC 44797 | 40 |
| NGC 4904 | PGC 44846 | 49 |
| PGC 42393 | UGC 7824 | 51 |
| PGC 44014 | UGC 8041 | 56 |
| PGC 44066 | UGC 8048 | 46 |
| PGC 43397 | UGC 7982 | 48 |
| PGC 44354 | UGC 8074 | 38 |
| PGC 44685 | UGC 8105 | 37 |
| PGC 44858 | UGC 8127 | 62 |
Weblinks
- NGC 4753. SIMBAD, abgerufen am 4. Februar 2015 (englisch).
- NGC 4753. DSO Browser, abgerufen am 4. Februar 2015 (englisch).
- Lenticular dust in detail (engl.)
Einzelnachweise
Auf dieser Seite verwendete Medien
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Multiple Viewing Orientations of NGC 4753 (noirlab2403b).jpg
Autor/Urheber: NOIRLab/NSF/AURA/Steiman-Cameron et al./P. Marenfeld, Lizenz: CC BY 4.0
A model of NGC 4753 as seen from various viewing orientations. From left to right and top to bottom, the angle of the line of sight to the galaxy’s equatorial plane ranges from 10° to 90° in steps of 10°. Although galaxies similar to NGC 4753 may not be rare, only certain viewing orientations allow for easy identification of a highly twisted disk. This infographic is a recreation of Figure 7 from a 1992 research paper.
Autor/Urheber: NOIRLab/NSF/AURA/Steiman-Cameron et al./P. Marenfeld, Lizenz: CC BY 4.0
A model of NGC 4753 as seen from various viewing orientations. From left to right and top to bottom, the angle of the line of sight to the galaxy’s equatorial plane ranges from 10° to 90° in steps of 10°. Although galaxies similar to NGC 4753 may not be rare, only certain viewing orientations allow for easy identification of a highly twisted disk. This infographic is a recreation of Figure 7 from a 1992 research paper.
The Twisted Dusty Disk of NGC 4753 (noirlab2403a).jpg
Autor/Urheber: International Gemini Observatory/NOIRLab/NSF/AURA Image processing: J. Miller (International Gemini Observatory/NSF’s NOIRLab), M. Rodriguez (International Gemini Observatory/NSF’s NOIRLab), M. Zamani (NSF’s NOIRLab), Lizenz: CC BY 4.0
Discovered by astronomer William Herschel in 1784, NGC 4753 displays some truly fascinating features. In this image captured by the Gemini South telescope, one half of the International Gemini Observatory operated by NSF’s NOIRLab, the galaxy’s intricate dust lanes are a sight to behold. NGC 4753 is located about 60 million light-years away in the constellation Virgo. It is a member of the NGC 4753 Group of galaxies within the Virgo II Cloud — a series of at least 100 galaxy clusters and individual galaxies stretching off the southern edge of the Virgo Supercluster. A 1992 study of NGC 4753 found that its complex network of twisted dust lanes is likely the result of a merger with a nearby dwarf galaxy companion about 1.3 billion years ago.
Autor/Urheber: International Gemini Observatory/NOIRLab/NSF/AURA Image processing: J. Miller (International Gemini Observatory/NSF’s NOIRLab), M. Rodriguez (International Gemini Observatory/NSF’s NOIRLab), M. Zamani (NSF’s NOIRLab), Lizenz: CC BY 4.0
Discovered by astronomer William Herschel in 1784, NGC 4753 displays some truly fascinating features. In this image captured by the Gemini South telescope, one half of the International Gemini Observatory operated by NSF’s NOIRLab, the galaxy’s intricate dust lanes are a sight to behold. NGC 4753 is located about 60 million light-years away in the constellation Virgo. It is a member of the NGC 4753 Group of galaxies within the Virgo II Cloud — a series of at least 100 galaxy clusters and individual galaxies stretching off the southern edge of the Virgo Supercluster. A 1992 study of NGC 4753 found that its complex network of twisted dust lanes is likely the result of a merger with a nearby dwarf galaxy companion about 1.3 billion years ago.
.jpg)
Lenticular dust in detail (potw2420a).jpg
(c) ESA/Hubble, CC BY 4.0
Featured in this new image from the NASA/ESA Hubble Space Telescope is a nearly edge-on view of the lenticular galaxy NGC 4753. These galaxies have an elliptical shape and ill-defined spiral arms.This image is the object's sharpest view to date, showcasing Hubble’s incredible resolving power and ability to reveal complex dust structures. NGC 4753 resides around 60 million light-years from Earth in the constellation Virgo and was first discovered by the astronomer William Herschel in 1784. It is a member of the NGC 4753 Group of galaxies within the Virgo II Cloud, which comprises roughly 100 galaxies and galaxy clusters.This galaxy is believed to be the result of a galactic merger with a nearby dwarf galaxy roughly 1.3 billion years ago. NGC 4753’s distinct dust lanes around its nucleus are believed to have been accreted from this merger event. It is now believed that most of the mass in the galaxy lies in a slightly flattened spherical halo of dark matter. Dark matter is a form of matter that cannot currently be observed directly, but is thought to comprise about 85% of all matter in the Universe. It is referred to as ‘dark’ because it does not appear to interact with the electromagnetic field, and therefore does not seem to emit, reflect or refract light.This object is also of scientific interest to test different theories of formation of lenticular galaxies, given its low-density environment and complex structure. Furthermore, this galaxy has been host to two known Type Ia supernovae. These types of supernovae are extremely important as they are all caused by exploding white dwarfs which have companion stars, and always peak at the same brightness — 5 billion times brighter than the Sun. Knowing the true brightness of these events, and comparing this with their apparent brightness, gives astronomers a unique chance to measure distances in the Universe.[Image Description: Lenticular galaxy NGC 4753 is featured with a bright white core and surrounding defined dust lanes around its nucleus, that predominantly appear dark brown in colour. A variety of faint stars fill the background of the image.]
(c) ESA/Hubble, CC BY 4.0
Featured in this new image from the NASA/ESA Hubble Space Telescope is a nearly edge-on view of the lenticular galaxy NGC 4753. These galaxies have an elliptical shape and ill-defined spiral arms.This image is the object's sharpest view to date, showcasing Hubble’s incredible resolving power and ability to reveal complex dust structures. NGC 4753 resides around 60 million light-years from Earth in the constellation Virgo and was first discovered by the astronomer William Herschel in 1784. It is a member of the NGC 4753 Group of galaxies within the Virgo II Cloud, which comprises roughly 100 galaxies and galaxy clusters.This galaxy is believed to be the result of a galactic merger with a nearby dwarf galaxy roughly 1.3 billion years ago. NGC 4753’s distinct dust lanes around its nucleus are believed to have been accreted from this merger event. It is now believed that most of the mass in the galaxy lies in a slightly flattened spherical halo of dark matter. Dark matter is a form of matter that cannot currently be observed directly, but is thought to comprise about 85% of all matter in the Universe. It is referred to as ‘dark’ because it does not appear to interact with the electromagnetic field, and therefore does not seem to emit, reflect or refract light.This object is also of scientific interest to test different theories of formation of lenticular galaxies, given its low-density environment and complex structure. Furthermore, this galaxy has been host to two known Type Ia supernovae. These types of supernovae are extremely important as they are all caused by exploding white dwarfs which have companion stars, and always peak at the same brightness — 5 billion times brighter than the Sun. Knowing the true brightness of these events, and comparing this with their apparent brightness, gives astronomers a unique chance to measure distances in the Universe.[Image Description: Lenticular galaxy NGC 4753 is featured with a bright white core and surrounding defined dust lanes around its nucleus, that predominantly appear dark brown in colour. A variety of faint stars fill the background of the image.]