Omicron Persei

Source: Wikipedia, the free encyclopedia.
ο Persei
Location of ο Persei (circled red)
Observation data
Epoch J2000      Equinox J2000
Constellation Perseus
A
Right ascension 03h 44m 19.13377s[1]
Declination 32° 17′ 17.6874″[1]
Apparent magnitude (V) 3.83[2]
B
Right ascension 03h 44m 19.17122s[3]
Declination 32° 17′ 18.5103″[3]
Apparent magnitude (V) 6.68[4]
Characteristics
A
Spectral type B1III / B2V[5]
U−B color index -0.75[2]
B−V color index +0.05[2]
Variable type ellipsoidal[6]
Distance
approx. 1,100 ly
(approx. 330 pc)
Semi-amplitude
(K1)
(primary)		111.8 km/s
Semi-amplitude (K2)
(secondary)		155.0 km/s
Details
Aa
Myr
SAO 56673, WDS
 J03443+3217AB
Database references
SIMBADdata

Omicron Persei (ο Persei, abbreviated Omicron Per, ο Per) is a

triple star system in the constellation of Perseus. From parallax measurements taken during the Hipparcos mission it is approximately 1,100 light-years (330 parsecs) from the Sun
.

The system consists of a

spectroscopic binary pair designated Omicron Persei A and a third companion Omicron Persei B.[9] A's two components are themselves designated Omicron Persei Aa (officially named Atik /ˈeɪtɪk/, the traditional name of the system)[10][11]
and Ab.

Etymology

ο Persei in optical light

ο Persei (Latinised to Omicron Persei) is the system's Bayer designation. The designations of the two constituents as Omicron Persei A and B, and those of A's components - Omicron Persei Aa and Ab - derive from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU).[12]

It bore the traditional name Atik (also Ati, Al Atik),

multiple systems.[16] It approved the name Atik for the component Omicron Persei A on 12 September 2016 and it is now so included in the List of IAU-approved Star Names.[11]

In

Chinese name for Omicron Persei itself is 卷舌五 (Juǎn Shé wu), "the Fifth Star of Rolled Tongue".[18]

Properties

A light curve for Omicron Persei A, plotted from TESS data[19]

Omicron Persei A is a

magnitude brighter than the secondary at visual wavelengths.[5] The binary pair forms a rotating ellipsoidal variable star, which varies in brightness from visual magnitude 3.79 to 3.88 during the orbital period.[20]

Omicron Persei lies just north of the open cluster IC 348, but is not catalogued as a member. Both IC 348 and Omicron Persei belong to the Perseus OB2 association.[21]

Culture

References

  1. ^
    doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR
    .
  2. ^
    Bibcode:2002yCat.2237....0D
    .
  3. ^
    doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR
    .
  4. doi:10.1051/0004-6361:20011822
    .
  5. ^
    Bibcode:1998Obs...118..138S
    .
  6. Bibcode:2009yCat....102025S
    .
  7. S2CID 119387088
    .
  8. ^
    Bibcode:1997ARep...41..630L
    .
  9. ^ "Displaying next number in catalog HIP => 17448". Multiple Star Catalog. Retrieved 2018-02-19.
  10. ISBN 978-1-931559-44-7
    .
  11. ^ a b "Naming Stars". IAU.org. Retrieved 16 December 2017.
  12. arXiv:1012.0707 [astro-ph.SR
    ].
  13. ISBN 978-0-521-49343-7.{{cite book}}: CS1 maint: multiple names: authors list (link
    )
  14. ^ Your Sky Object Catalogue: Named Stars
  15. ^ IAU Working Group on Star Names (WGSN), International Astronomical Union, retrieved 22 May 2016.
  16. ^ "WG Triennial Report (2015-2018) - Star Names" (PDF). p. 5. Retrieved 2018-07-14.
  17. ISBN 978-986-7332-25-7
    .
  18. ^ (in Chinese) 香港太空館 - 研究資源 - 亮星中英對照表 Archived 2008-10-25 at the Wayback Machine, Hong Kong Space Museum. Accessed on line November 23, 2010.
  19. ^ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 8 December 2021.
  20. ^ "omi Per". The International Variable Star Index. AAVSO. Retrieved 18 December 2022.
  21. doi:10.1051/0004-6361/201118118
    .
  22. ^ "Omicron Persei 8 meaning explored as hilarious Futurama memes spread". The Focus. 30 November 2021. Retrieved 9 October 2022.
  23. ^ "How Futurama is related to the new Omicron COVID variant". MARCA. 28 November 2021. Retrieved 9 October 2022.

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=Omicron_Persei&oldid=1232212794"