NGC 6752

Database links to NGC 6752

Globular cluster NGC 6752

Photo of the MPG / ESO 2.2 m telescope
AladinLite
Constellation	peacock
Position equinox : J2000.0 , epoch : J2000.0
Right ascension	19 ^h 10 ^m 51.8 ^s
declination	-59 ° 59 ′ 55 ″
Appearance
Concentration class	VI
Brightness (visual)	5.3 mag
Angular expansion	29
Physical data
Redshift	(−91 ± 9)  ·  10 ⁻⁶
Radial velocity	−27.4 ± 2.7 km / s
distance	13 kLj
Dimensions	160,000 M _☉
diameter	2.7 ly
Age	(13.8 ± 1.1) 10 ⁹ years
history
discovery	James Dunlop
Discovery date	June 30, 1826
Catalog names
NGC 6752 • C 1906-600 • GCl 108 • ESO 141-SC 30 • Dun 295 • GC 4467 •

NGC 6752 is the name of a globular cluster in the constellation Peacock , the discovery of which is recorded in the New General Catalog in 1826 by the astronomer James Dunlop . NGC 6752 has an apparent magnitude of 5.3 mag and an angular diameter of 29 '. It is therefore the brightest globular cluster after 47 Tucanae and Omega Centauri . The star cluster has 160,000 times the mass of the Sun and a core diameter of 2.7 light years ; its age is estimated to be 13.8 billion years, which is the age of the universe .

An examination of the star cluster with the Hubble Space Telescope suggests that 10–38% of the stars in the center form a binary system. At NGC 6752, a study of star evolution by means of ultraviolet observations showed that 355 of the more than 100,000 stars are in a state in which they reach surface temperatures of more than 30,000 Kelvin.

Detailed study of the center of the Hubble Space Telescope .
Image taken by the Ultraviolet Imaging Telescope to study star evolution in NGC 6752.

Web links

astronews.com: Picture of the day January 30, 2012

Individual evidence

↑ NASA / IPAC EXTRAGALACTIC DATABASE
↑ ^a ^b ^c SEDS : NGC 6752
↑ SIMBAD Query
↑ NGC 6752
^ A. Sollima et al .: A comparison between the stellar and dynamical masses of six globular clusters. arxiv : 1206.4828
^ RG Gratton et al.: Distances and ages of NGC6397, NGC6752 and 47 Tuc. arxiv : astro-ph / 0307016
↑ Eric P. Rubenstein, Charles D. Bailyn: Hubble Space Telescope Observations of the Post - Core-Collapse Globular Cluster NGC 6752. II. A Large Main-Sequence Binary Population. bibcode : 1997ApJ ... 474..701R
↑ Wayne B. Landsman et al .: Ultraviolet Imagery of NGC 6752: A Test of Extreme Horizontal Branch Models. bibcode : 1996ApJ ... 472L..93L , arxiv : astro-ph / 9609127 .
^ S. Moehler, W. Landsman, R. Napiwotzki: Hot UV bright stars in globular clusters. bibcode : 1998A & A ... 335..510M , arxiv : astro-ph / 9803313 .

[NED-1] NASA / IPAC EXTRAGALACTIC DATABASE

[SEDS-2] SEDS : NGC 6752

[SIMBAD-3] SIMBAD Query

[4] NGC 6752

[5] A. Sollima et al .: A comparison between the stellar and dynamical masses of six globular clusters. arxiv : 1206.4828

[6] RG Gratton et al.: Distances and ages of NGC6397, NGC6752 and 47 Tuc. arxiv : astro-ph / 0307016

[7] Eric P. Rubenstein, Charles D. Bailyn: Hubble Space Telescope Observations of the Post - Core-Collapse Globular Cluster NGC 6752. II. A Large Main-Sequence Binary Population. bibcode : 1997ApJ ... 474..701R

[8] Wayne B. Landsman et al .: Ultraviolet Imagery of NGC 6752: A Test of Extreme Horizontal Branch Models. bibcode : 1996ApJ ... 472L..93L , arxiv : astro-ph / 9609127 .

[9] S. Moehler, W. Landsman, R. Napiwotzki: Hot UV bright stars in globular clusters. bibcode : 1998A & A ... 335..510M , arxiv : astro-ph / 9803313 .