HIP 13044
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Star HIP 13044 |
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| AladinLite | |||||||||||
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | Chemical furnace | ||||||||||
| Right ascension | 02 h 47 m 37.4 s | ||||||||||
| declination | -36 ° 06 ′ 27 ″ | ||||||||||
| Apparent brightness | 9.94 mag | ||||||||||
| Typing | |||||||||||
| Spectral class | F2 | ||||||||||
| Astrometry | |||||||||||
| distance | 701 ± 20 pc | ||||||||||
| Physical Properties | |||||||||||
| radius | 6.7 ± 0.3 R ☉ | ||||||||||
| Effective temperature | 6025 ± 63 K | ||||||||||
| Metallicity [Fe / H] | −2.09 ± 0.26 | ||||||||||
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Other names and catalog entries |
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HIP 13044 is a star around 700 parsecs away in the constellation Fornax . It belongs to the spectral class F2 and is located in the red part of the horizontal branch in the HR diagram . HIP 13044 is a member of the Helmi stellar stream , a group of low- metallicity stars that move in eccentric orbits outside the galactic plane and that are believed to be remnants of a satellite galaxy incorporated into the galaxy.
An exoplanet around this star postulated in 2010, which would have posed a major problem for current models of the formation of planetary systems due to the very deep metallicity of the central star , could not be confirmed in later studies. In addition, this would have been the first evidence of an exoplanet of extragalactic origin .
literature
- Jones, MI, JS Jenkins: No evidence of the planet orbiting the extremely metal-poor extragalactic star HIP 13044 . In: Astronomy & Astrophysics . tape 562 , A129, February 19, 2014, doi : 10.1051 / 0004-6361 / 201322132 .