Merope (star)
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Star Merope |
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| AladinLite | |||||||||||||||||||
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | bull | ||||||||||||||||||
| Right ascension | 03 h 46 m 19.57 s | ||||||||||||||||||
| declination | + 23 ° 56 ′ 54.1 ″ | ||||||||||||||||||
| Apparent brightness | 4.18 likes | ||||||||||||||||||
| Typing | |||||||||||||||||||
| B − V color index | -0.06 | ||||||||||||||||||
| U − B color index | -0.42 | ||||||||||||||||||
| R − I index | -0.04 | ||||||||||||||||||
| Spectral class | B6 IVe | ||||||||||||||||||
| Variable star type | SPB / LERI | ||||||||||||||||||
| Astrometry | |||||||||||||||||||
| Radial velocity | (6.2 ± 2) km / s | ||||||||||||||||||
| parallax | (8.58 ± 0.37) mas | ||||||||||||||||||
| distance | (380 ± 16) ly (116.6 ± 5.0) pc |
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| Visual absolute brightness M vis | -1.19 mag | ||||||||||||||||||
| Proper movement | |||||||||||||||||||
| Rec. Share: | (21.1 ± 0.4) mas / a | ||||||||||||||||||
| Dec. portion: | (-43.6 ± 0.3) mas / a | ||||||||||||||||||
| Physical Properties | |||||||||||||||||||
| Dimensions | (4.25 ± 0.08) M ☉ | ||||||||||||||||||
| radius | (4.79 ± 0.17) R ☉ | ||||||||||||||||||
| Effective temperature | (13690 ± 480) K. | ||||||||||||||||||
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Other names and catalog entries |
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Merope is the proper name of the star 23 Tauri in the Pleiades . The star is named after Merope , the daughter of Atlas in Greek mythology . Like all stars in the Pleiades, Merope is occasionally covered by the moon .
It has an apparent magnitude of +4.2 mag, belongs to the spectral class B6 IVe and is about 360 light years away from Earth. According to measurements from the Gaia mission , the star is only 340 ± 15 light years away. That would make him one of the closest stars in the Pleiades.
The star is also a Be star and is changeable . It belongs either to the slowly pulsating B stars or to the Lambda Eridani stars .
Web links
Commons : Merope - collection of images, videos and audio files
- Jim Kalers Stars, University of Illinois: Merope (23 Tauri)
Individual evidence
- ↑ a b c d e f 23 Tau. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed January 27, 2019 .
- ↑ a b c Bright Star Catalog
- ↑ a b V0971 Tau. In: VSX. AAVSO, accessed July 21, 2018 .
- ^ A b Hipparcos, the New Reduction (van Leeuwen, 2007)
- ↑ a b c TR White, BJS Pope, V. Antoci, PI Pápics, C. Aerts, DR Gies, K. Gordon, D. Huber, GH Schaefer, S. Aigrain, S. Albrecht, T. Barclay, G. Barentsen , PG Beck, TR Bedding, M. Fredslund Andersen, F. Grundahl, SB Howell, MJ Ireland, SJ Murphy, MB Nielsen, V. Silva Aguirre, PG Tuthill: Beyond the Kepler / K2 bright limit: Variability in the seven brightest members of the Pleiades . In: Monthly Notices of the Royal Astronomical Society . 471, No. 3, 2017, pp. 2882–2901. arxiv : 1708.07462 . bibcode : 2017MNRAS.471.2882W . doi : 10.1093 / mnras / stx1050 .