AS 314
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Scutum |
| Right ascension | 18h 39m 26.106s |
| Declination | −13° 50′ 47.19″ |
| Apparent magnitude (V) | 10.01 |
| Characteristics | |
| Spectral type | A3Ia |
| Details | |
| Luminosity | 160,000 L☉ |
| Temperature | 9,100 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
AS 314, also known as V452 Scuti, is a white hypergiant star and luminous blue variable candidate located in the constellation of Scutum.[1] It has an apparent magnitude of 10.01 and can be seen with small telescopes.
Characteristics
AS 314 was poorly studied until the year 2000, when Miroshnichenko et al determined a distance for this star of around 10 kiloparsecs (32,600 light years), a luminosity 160,000 times that of Sun, a radius 200 times the solar radius, and an initial mass of 20 solar masses. It's losing 2*10−5 times the mass of the Sun each year (in other words, one solar mass each 50,000 years) through a very strong stellar wind.[1]
It has an infrared excess, suggesting it's shrouded in a circumstellar envelope of dust, perhaps produced in a past outburst as a luminous blue variable, as its location in the Hertzsprung-Russell diagram places it near the zone occupied by those stars;[1][2] however it has not been classified as a bona fide luminous blue variable, but as a candidate.[3]
References
- ^ a b c Miroshnichenko, A. S.; Chentsov, E. L.; Klochkova, V. G. (June 2000). "AS 314: A dusty A-type hypergiant". Astronomy and Astrophysics. 144: 379–389. Bibcode:2000A&AS..144..379M. doi:10.1051/aas:2000216.
{{cite journal}}: CS1 maint: date and year (link) CS1 maint: multiple names: authors list (link) - ^ Clark, J. S.; Larionov, V. M.; Arkharov, A. (May 2005). "On the population of galactic Luminous Blue Variables". Astronomy and Astrophysics. 435 (1): 239–246. Bibcode:2005A&A...435..239C. doi:10.1051/0004-6361:20042563.
{{cite journal}}: Check date values in:|year=/|date=mismatch (help)CS1 maint: multiple names: authors list (link) - ^ Nazé, Y.; Rauw, G.; Hutsemékers, D. (February 2012). "The first X-ray survey of Galactic luminous blue variables". Astronomy and Astrophysics. 538. arXiv:1111.6375. Bibcode:2012A&A...538A..47N. doi:10.1051/0004-6361/201118040. A47.
{{cite journal}}: CS1 maint: date and year (link) CS1 maint: multiple names: authors list (link)
