- Merope (star)
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Merope, 23 Tau Observation data
Epoch J2000 Equinox J2000Constellation Taurus Right ascension 03h 46m 19.5739s[1] Declination 23° 56′ 54.090″[1] Apparent magnitude (V) 4.113[1] Characteristics Spectral type B6IVe[1] U−B color index -0.41 B−V color index -0.06[2] Variable type Beta Cephei Astrometry Radial velocity (Rv) 6.2[1] km/s Proper motion (μ) RA: 21.17[1] mas/yr
Dec.: -42.67[1] mas/yrParallax (π) 9.08 ± 1.04[3] mas Distance approx. 360 ly
(approx. 110 pc)Absolute magnitude (MV) −1.07 Other designations Database references SIMBAD data Coordinates:
03h 46m 19.5739s, +23° 56′ 54.090″Merope (23 Tauri) is a star in the constellation Taurus and a member of the Pleiades star cluster. It is approximately 360 light years from Earth.
Merope is a blue-white B-type subgiant with a mean apparent magnitude of +4.14. Richard Hinckley Allen described the star as lucid white and violet.[4] It has a luminosity of 630 times that of the Sun and a surface temperature of 14,000 kelvins. Merope's mass is roughly 4.5 solar masses and has a radius more than 4 times as great as the Sun's. It is classified as a Beta Cephei type variable star and its brightness varies by 0.01 magnitudes.
Surrounding Merope is the Merope Nebula. Part of the nebula that the Pleiades Cluster is currently passing through, it appears brightest around Merope and is listed in the Index Catalogue as number IC 349.
See also
- Lists of stars in the constellation Taurus
- Class B Stars
- Beta Cephei Variable Stars
References
- ^ a b c d e f g "SIMBAD query result: MEROPE -- Be Star". Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-id?Ident=merope&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id. Retrieved 2010-06-12.
- ^ Crawford, D. L.; Barnes, J. V.; Golson, J. C. (1971). "Four-color, Hbeta, and UBV photometry for bright B-type stars in the northern hemisphere" (PDF). The Astronomical Journal 1058: 1058. Bibcode 1971AJ.....76.1058C. doi:10.1086/111220.
- ^ Perryman, M. A. C.; Lindegren, L.; Kovalevsky, J.; Hoeg, E. et al (1997). "The HIPPARCOS Catalogue" (PDF). Astronomy and Astrophysics. 323 Suppl. Ser., Vol. 34, p. 1 - 49: L49–L52. Bibcode 1997A&A...323L..49P.
- ^ Merope, Star Names and their Meanings, Richard Hinckley Allen, Dover Publications, 1963, p. 407.
External links
- Jim Kaler's Stars, University of Illinois:Merope (23 Tauri)
- NGC 1435 - Merope Nebula LRGB image with 4 hours total exposure.
Bayer α (Aldebaran) • β (Elnath) • γ (Prima Hyadum) • δ¹ (Secunda Hyadum) • δ² • δ³ • ε (Ain) • ζ (Tien Kwan) • η (Alcyone) • θ¹ • θ² • ι • κ¹ • κ² • λ • μ • ν • ξ • ο • π • ρ • σ¹ • σ² • τ • υ • φ • χ • ψ • ω¹ • ω² • b • c • d • e • f • h • i • k • l • m • n • o • p • q (Taygeta) • r • s • t • u • A¹ • A²Flamsteed 1 (ο) • 2 (ξ) • 4 (s) • 5 (f) • 6 (t) • 7 • 9 • 10 • 11 • 12 • 13 • 14 • 16 (Celaeno) • 17 (Electra) • 18 • 19 (q, Taygeta) • 20 (Maia) • 21 (Asterope I) • 22 (Asterope II) • 23 (Merope) • 24 • 25 (η, Alcyone) • 26 • 27 (Atlas) • 28 (Pleione) • 29 (u) • 30 (e) • 31 • 32 • 33 • 35 (λ) • 36 • 37 (A¹) • 38 (ν) • 39 (A²) • 40 • 41 • 42 (ψ) • 43 (ω¹) • 44 (p) • 45 • 46 • 47 • 48 • 49 (μ) • 50 (ω²) • 51 • 52 (φ) • 53 • 54 (γ, Prima Hyadum) • 55 • 56 • 57 (h) • 58 • 59 (χ) • 60 • 61 (δ¹, Secunda Hyadum) • 62 • 63 • 64 (δ²) • 65 (κ¹) • 66 (r) • 67 (κ²) • 68 (δ³) • 69 (υ) • 70 • 71 • 72 • 73 (π) • 74 (ε, Ain) • 75 • 76 • 77 (θ¹) • 78 (θ²) • 79 (b) • 80 • 81 • 83 • 84 • 85 • 86 (ρ) • 87 (α, Aldebaran) • 88 (d) • 89 • 90 (c¹) • 91 (σ¹) • 92 (σ²) • 93 • 94 (τ) • 95 • 96 • 97 (i) • 98 (k) • 99 • 101 • 102 (ι) • 103 • 104 (m) • 105 • 106 (l) • 107 • 108 • 109 (n) • 110 • 111 • 112 (β, Elnath) • 113 • 114 (o) • 115 • 116 • 117 • 118 • 119 • 120 • 121 • 122 • 123 (ζ, Tien Kwan) • 125 • 126 • 127 • 128 • 129 • 130 • 131 • 132 • 133 • 134 • 135 • 136 • 137 • 139 • 140 • 44 Eri • 49 EriNearby WISE 0410+1502 • Gliese 176Other List Categories:- Variable star stubs
- Flamsteed objects
- Taurus constellation
- Beta Cephei variables
- Pleiades Open Cluster
- B-type subgiants
- Stars with proper names
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