NGC 1277

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Galaxy
NGC 1277
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The galaxy NGC 1277 (center) in an image taken by the Hubble Space Telescope
The galaxy NGC 1277 (center) in an image taken by the Hubble Space Telescope
AladinLite
Constellation Perseus
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 03 h 19 m 51.5 s
declination + 41 ° 34 ′ 25 ″
Appearance
Morphological type S0 + : / pec  
Brightness  (visual) 13.8 mag
Brightness  (B-band) 14.7 mag
Angular expansion 0.8 ′ × 0.3 ′
Position angle 92 °
Surface brightness 12.1 mag / arcmin²
Physical data
Affiliation Abell 426  
Redshift 0.016898 ± 0.000093  
Radial velocity 5066 ± 28 km / s  
Stroke distance
v rad  / H 0 		(231 ± 16)  x  10 6  ly
(70.8 ± 5.0)  Mpc 
history
discovery Lawrence Parsons
Discovery date 4th December 1875
Catalog names
NGC  1277 • PGC  12434 • CGCG  540-104 • MCG  + 07-07-064 • 2MASX  J03195148 + 4134242 • GALEX ASC J031951.45 + 413425.3 • LDCE 224 NED203

NGC 1277 is a lenticular galaxy of the Hubble type S0 in the constellation Perseus in the northern sky with a supermassive black hole in the center. It is an estimated 231 million light years from the Milky Way , about 55,000 ly in diameter, and is a member of the Perseus Cluster Abell 426 .
In the same area of ​​the sky are the galaxies NGC 1273 , NGC 1274 , NGC 1276 , NGC 1278 , NGC 1281 and PGC 12405 .

A study by Ignacio Trujillo and colleagues in 2013 showed a special feature of NGC 1277. According to this, all stars in this galaxy are more than 10 billion years old and were formed over a period of a few million years.

The object was discovered on December 4, 1875 by Lawrence Parsons , 4th Earl of Rosse.

Black hole

The black hole at the center of NGC 1277 is one of the most massive discovered to date. It was initially estimated at 17 billion solar masses , which would be about 14% of the mass of the galaxy. This would contradict popular models that a supermassive black hole of this size would have to have a much larger galaxy around it. More recent measurements estimate its size at 5 billion solar masses.

Web links

Commons : NGC 1277  - collection of images, videos, and audio files

Individual evidence

  1. ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c d e f SEDS : NGC 1277
  3. ↑ Researchers find a “timeless” galaxy. scienceticker.info, December 11, 2013
  4. ↑ Seligman
  5. ^ Van den Bosch, Gebhardt, Gültekin et al .: An over-massive black hole in the compact lenticular galaxy NGC 1277. Nature, November 29, 2012
  6. ↑ Tilman Steffen: Black giant questions evolution of galaxies. In: Zeit Online. Zeit Online GmbH, November 28, 2012, accessed on November 29, 2012 .
  7. ↑ Eric Emsellem: Is the black hole in NGC 1277 really overmassive? . In: Monthly Notices of the Royal Astronomical Society . 433, No. 3, August 2013, pp. 1862-1870. arxiv : 1305.3630 . bibcode : 2013MNRAS.433.1862E . doi : 10.1093 / mnras / stt840 .