 |
This article may require cleanup to meet Wikipedia's quality standards. Please improve this article if you can. (March 2009) |
|
BD Camelopardalis |
|
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 03h 42m 09.325s |
| Declination | +63° 13′ 00.501″ |
| Apparent magnitude (V) | 5.115 |
| Characteristics | |
| Spectral type | S3.5/2 (M4III) |
| U-B color index | 1.82 |
| B-V color index | 1.63 |
| R-I color index | 1.39 |
| Variable type | Symbiotic star V* BD Cam |
| Astrometry | |
| Radial velocity (Rv) | -22.0 km/s |
| Proper motion (μ) | RA: -16.97 mas/yr Dec.: 19.34 mas/yr |
| Parallax (π) | 6.27 ± 0.63 mas |
| Distance | approx. 520 ly (approx. 160 pc) |
| Absolute magnitude (MV) | 6.788 |
| Details | |
| Mass | 0,4 M☉ |
| Radius | 0,5 R☉ |
| Luminosity | 0,04 L☉ |
| Temperature | 2,000–3,500 K |
| Other designations | |
|
JP11 803, SAO 12874, AG+63° 277, GSC 04066-01732, 2MASS J03420933+6313005, BD+62° 597, HD 22649, N30 751, SV* P 101, CSS 79, HIC 17296, PLX 758, TYC 4066-1732-1, CSV 328, HIP 17296, PMC 90-93 92, UBV M 9615, FK5 129, HR 1105, PPM 14446, UBV 3468, GC 4383, IRAS 03377+6303, RAFGL 506, GCRV 2027, IRC +60125, S1* 60, AAVSO 0333+62B.
|
|
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
|
BD Camelopardalis is a symbiotic star in the constellation Camelopardalis.
" On the basis of the measurement of radial velocities of the line components it is concluded that the helium emission originates in the vicinity of the inner Lagrangian point of the system, indicating a gas motion from the red giant primary, directed to the secondary, with a velocity of about 5 km/s. At the same time, there is a high-velocity, hot wind outwards from the primary red giant with a velocity of about 50 km/s. " -Shcherbakov, A. G. and Tuominen, I.
" However, HR 1105 appears to have a highly variable UV companion. In 1982, no UV flux was discerned for this system, but by 1986 C IV was strong, increasing by a factor of 3 in 1987 with prominent lines of Si III, C III, O III, Si IV, and N V. " - Ake, Thomas B., III; Johnson, Hollis R. and Perry, Benjamin F., Jr.
References
- Shcherbakov, A. G.; Tuominen, I. (1992). "Activity modulation of the red giant HR 1105 as observed in the He I lambda 10830 A". The Astrophysical Journal 255: 215–220. doi:. http://adsabs.harvard.edu/abs/1992A%26A...255..215S.
- Ake, Thomas B., III; Johnson, Hollis R.; Perry, Benjamin F., Jr. (1988). "Companions to peculiar red giants: HR 363 and HR 1105". In ESA, A Decade of UV Astronomy with the IUE Satellite 1: 245–248. doi:. http://adsabs.harvard.edu/abs/1988uvai....1..245A.
- HR 1105
- Image BD Camelopardalis
- Symbiotic Star Blows Bubbles Into Space
 |
This binary or multiple star system–related article is a stub. You can help Wikipedia by expanding it. |
 |
This variable star–related article is a stub. You can help Wikipedia by expanding it. |
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)
