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α Sculptoris

Location of α Sculptoris (circled)
Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Sculptor
Right ascension	00 58 36.35930
Declination	−29° 21′ 26.8247″
Apparent magnitude (V)	+4.30
Characteristics
Spectral type	B7 IIIp
U−B color index	−0.515
B−V color index	−0.155
Variable type	SX Ari
Astrometry
Radial velocity (Rv)	+10.2 km/s
Proper motion (μ)	RA: +20.13 mas/yr Dec.: +5.31 mas/yr
Parallax (π)	4.20 ± 0.18 mas
Distance	780 ± 30 ly (240 ± 10 pc)
Absolute magnitude (MV)	−2.58
Details
Mass	5.01 M☉
Radius	7.52 R☉
Luminosity	1,549 L☉
Surface gravity (log g)	3.20 cgs
Temperature	13,600 K
Metallicity	0.90 dex
Rotational velocity (v sin i)	17 km/s
Age	93 Myr
Other designations
α Scl, CD−30°297, FK5 35, HD 5737, HIP 4577, HR 280, SAO 166716
Database references
SIMBAD	data

Alpha Sculptoris, Latinized from α Sculptoris, is the Bayer designation for a blue-white star in the southern constellation of Sculptor. It has an apparent visual magnitude of +4.30, which makes it the brightest star in this generally faint constellation. Parallax measurements collected during the Hipparcos mission provide a distance estimate for this star, placing it at roughly 780 light-years (240 parsecs), with a 4% margin of error.

Alpha Sculptoris is a B-type giant star. It is classified as an SX Arietis type variable star and its magnitude varies by less than a tenth of a magnitude.

The luminosity of α Scl is around 1,500 times that of the Sun while its surface temperature is 13,600 K. The radius of Alpha Sculptoris is calculated to be seven times solar while its mass is five times that of the Sun.

References

1. ^ van Leeuwen, F. (November 2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600.
2. ^ Wielen, R.; et al. (1999). "Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions". Veröff. Astron. Rechen-Inst. Heidelb. 35 (35). Astronomisches Rechen-Institut Heidelberg: 1. Bibcode:1999VeARI..35....1W.
3. Houk, Nancy (1979). Michigan catalogue of two-dimensional spectral types for the HD stars. Vol. 3. Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan. Bibcode:1982mcts.book.....H.
4. ^ Gutierrez-Moreno, Adelina; et al. (1966). "A System of photometric standards". Publ. Dept. Astron. Univ. Chile. 1. Publicaciones Universidad de Chile, Department de Astronomy: 1–17. Bibcode:1966PDAUC...1....1G.
5. ^ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
6. Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
7. ^ Kochukhov, O.; Bagnulo, S. (2006). "Evolutionary state of magnetic chemically peculiar stars". Astronomy and Astrophysics. 450 (2): 763. arXiv:astro-ph/0601461. Bibcode:2006A&A...450..763K. doi:10.1051/0004-6361:20054596. S2CID 18596834.
8. Shulyak, D.; Paladini, C.; Causi, G. Li; Perraut, K.; Kochukhov, O. (2014). "Interferometry of chemically peculiar stars: Theoretical predictions versus modern observing facilities". Monthly Notices of the Royal Astronomical Society. 443 (2): 1629. arXiv:1406.6093. Bibcode:2014MNRAS.443.1629S. doi:10.1093/mnras/stu1259.
9. ^ Saffe, C.; Levato, H. (2014). "On the nature of sn stars. I. A detailed abundance study". Astronomy & Astrophysics. 562: A128. arXiv:1401.5764. Bibcode:2014A&A...562A.128S. doi:10.1051/0004-6361/201322091. S2CID 119261402.
10. Schmitt, A. (March 1973). "The weak-helium-line star α Sculptoris. I. The line-spectrum". Astronomy and Astrophysics Supplement. 9: 427. Bibcode:1973A&AS....9..427S.
11. "alf Scl". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2012-04-08.
12. Manfroid, J.; Renson, P. (January 1994). "Photometric variations of AP stars". Astronomy and Astrophysics. 281: 73–89. Bibcode:1994A&A...281...73M. Retrieved 27 December 2024.

v t e Constellation of Sculptor
List of stars in Sculptor Sculptor in Chinese astronomy
Stars	Bayer α β γ δ ε ζ η θ ι κ κ λ λ μ ξ π σ τ Variable R BW HD 4113 4208 (Cocibolca) 9578 Other Gliese 1 Gliese 42 HE 2359-2844 LTT 9779 TOI-178 WASP-8 WASP-45 WD 0137−349
Exoplanets HD 4113 b HD 4208 b TOI-178c WASP-8b
Star clusters Blanco 1 NGC 288
Galaxies	NGC 7 10 24 55 101 115 131 134 148 150 174 254 264 289 300 314 334 365 378 409 415 418 423 424 427 438 439 441 461 491 526 527 544 549 612 613 626 630 7793 7812 Other 2MASX J00482185−2507365 occulting pair A2744 YD4 Abell 2744 Y1 Cartwheel Galaxy Comet Galaxy ESO 540-030 H2356-309 Haro 11 IC 5332 Sculptor Galaxy Sculptor Dwarf Galaxy Sculptor Dwarf Irregular Galaxy UNCOVER-z12 UNCOVER-z13
Galaxy clusters Abell 2667 Abell 2744
Astronomical events SN 2009gj
Category

• Bayer objects
• Sculptor (constellation)
• B-type giants
• SX Arietis variables
• Bright Star Catalogue objects
• Henry Draper Catalogue objects
• Hipparcos objects
• Durchmusterung objects
• Ap stars