AG Carinae
From Wikipedia, the free encyclopedia
|
The location of AG Car |
|
| Observation data Epoch J2000 |
|
|---|---|
| Constellation (pronunciation) |
Carina |
| Right ascension | 10h 56m 11.5763s |
| Declination | -60° 27' 12.815"' |
| Apparent magnitude (V) | 7.09 |
| Characteristics | |
| Spectral type | B2 |
| U-B color index | ? |
| B-V color index | ? |
| Variable type | None |
| Astrometry | |
| Radial velocity (Rv) | -171.5 km/s |
| Proper motion (μ) | RA: -6.48 mas/yr Dec.: 1.35 mas/yr |
| Parallax (π) | -0.56 ± 0.67 mas |
| Distance | approx. -6000 ly (approx. -2000 pc) |
| Absolute magnitude (MV) | 7.58 |
| Details | |
| Mass | 50 M☉ |
| Radius | ? R☉ |
| Luminosity | 1.000.000 L☉ |
| Temperature | ? K |
| Metallicity | ? |
| Rotation | ? |
| Age | ? years |
| Other designations | |
AG Carinae (AG Car) is a star in the constellation Carina. It is classified as a luminous blue variable and is one of the most luminous stars in the Milky Way. The large distance (20,000 light-years) and intervening dust mean that the star is not visible to the naked eye; its apparent brightness varies irregularly between 7.1m and 9.0m. The star is surrounded by a large planetary nebula, formed by material expulsed from the star by its powerful stellar wind. The star is apparently in a transitional phase between a massive class O blue supergiant and a Wolf-Rayet star.
[edit] References
- Samus, N. N.; Durlevich, O. V.; et al. (2004). Combined General Catalogue of Variable Stars (GCVS4.2). Retrieved on 2007-01-04.
[edit] External links
- 2MASS Atlas Image Gallery: Miscellaneous Objects — includes an infrared image of AG Carinae
- http://jumk.de/astronomie/big-stars/ag-carinae.shtml
- Simbad

