HD 15115
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 02h 26m 16.24s[1] |
| Declination | +06° 17′ 33.2″[1] |
| Apparent magnitude (V) | 6.79[2] |
| Characteristics | |
| Spectral type | F2[2] |
| B−V color index | 0.399[2] |
| Variable type | None |
| Astrometry | |
| Proper motion (μ) | RA: +86.31 ± 0.71[1] mas/yr Dec.: -49.97 ± 0.45[1] mas/yr |
| Parallax (π) | 22.11 ± 0.64[1] mas |
| Distance | 148 ± 4 ly (45 ± 1 pc) |
| Absolute magnitude (MV) | 7.15 |
| Details | |
| Age | 500[2] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 15115 is a yellow-white star.
The asymmetric disk encircling the star was discovered using the Hubble Space Telescope and further investigated by the W.M. Keck Observatory.
The reason for the asymmetry is thought to be the gravitational pull of a companion star, an exoplanet, or interaction with the local interstellar medium.[3]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (2007). "HIP 11360". Hipparcos, the New Reduction. Retrieved 2010-08-22.
- ↑ 2.0 2.1 2.2 2.3 Decin, G. et al. (November 2003), "Age Dependence of the Vega Phenomenon: Observations", The Astrophysical Journal 598 (1): 636–644, arXiv:astro-ph/0308294, Bibcode:2003ApJ...598..636D, doi:10.1086/378800
- ↑ http://adsabs.harvard.edu/abs/2009ApJ...702..318D
External links
- http://www.nasa.gov/mission_pages/hubble/news/lopsided_disk.html
- http://jumk.de/astronomie/exoplanets/hd-15115.shtml
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