Omicron Persei

{{Short description|Triple star system in the constellation Perseus}}

{{Starbox begin

| name = ο Persei

}}

{{Starbox image

|image=

{{Location mark

|image=Perseus constellation map.svg|alt=|float=center|width=280

|label=|position=right

|mark=Red circle.svg|mark_width=10|mark_link=Omicron Persei

|x=450|y=907

}}

|caption=Location of ο Persei (circled red)

}}

{{Starbox observe 2s

| epoch = J2000

| constell = Perseus

| component1 = A

| ra1 = {{RA|03|44|19.13377}}

| dec1 = {{DEC|+32|17|17.6874}}

| appmag_v1 = 3.83{{cite journal |bibcode=2002yCat.2237....0D |title=VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system |journal=CDS/ADC Collection of Electronic Catalogues |volume=2237 |last1=Ducati |first1=J. R. |year=2002 }}

| component2 = B

| ra2 = {{RA|03|44|19.17122}}{{cite Gaia EDR3|216718178537987968}}

| dec2 = {{DEC|+32|17|18.5103}}

| appmag_v2 = 6.68{{cite journal|title=The Tycho double star catalogue|author1=Fabricius, C.|author2=Høg, E.|author3=Makarov, V. V.|author4=Mason, B. D.|author5=Wycoff, G. L.|author6=Urban, S. E.|journal=Astronomy and Astrophysics|volume=384|pages=180–189|date=2002|bibcode=2002A&A...384..180F|doi=10.1051/0004-6361:20011822|doi-access=free}}

}}

{{Starbox character

| component1 = A

| class = B1III / B2V{{cite journal | bibcode=1998Obs...118..138S | title=Spectroscopic binary orbits from ultraviolet radial velocities. Paper 28: Omicron Persei | journal=The Observatory | volume=118 | pages=138 | last1=Stickland | first1=D. J. | last2=Lloyd | first2=C. | year=1998 }}

| b-v = +0.05

| u-b = −0.75

| variable = ellipsoidal{{cite journal | bibcode=2009yCat....102025S |title=VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)|journal=VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S|volume=1|display-authors=etal|last1=Samus|first1=N. N.|last2=Durlevich|first2=O. V.|year=2009}}

}}

{{Starbox astrometry

| radial_v = +12.20{{cite journal | bibcode=2004A&A...424..727P | doi=10.1051/0004-6361:20041213 | arxiv=astro-ph/0406573 | title=SB9: The ninth catalogue of spectroscopic binary orbits | journal=Astronomy and Astrophysics | volume=424 | issue=2 | pages=727–732 | year=2004 | last1=Pourbaix | first1=D. | last2=Tokovinin | first2=A. A. | last3=Batten | first3=A. H. | last4=Fekel | first4=F. C. | last5=Hartkopf | first5=W. I. | last6=Levato | first6=H. | last7=Morrell | first7=N. I. |author-link7=Nidia Morrell | last8=Torres | first8=G. | last9=Udry | first9=S. | s2cid=119387088 }}

| component2 = A

| prop_mo_ra2 = +6.091

| prop_mo_dec2 = −9.732

| parallax2 = 3.0224

| p_error2 = 0.3827

| parallax_footnote2 = {{cite Gaia EDR3|216718178536050176}}

| absmag_v = −4.4

}}

{{Starbox orbit

| reference =

| primary = Aa

| name = Ab

| period_unitless = 4.4191447 days

| axis_unitless = {{solar radius|33}}

| k1 = 111.8

| k2 = 155.0

| eccentricity = 0.0

| inclination = {{val|39|15}}

}}

{{Starbox detail

| component1 = Aa

| mass = 14

| temperature = 22,700{{cite journal |bibcode=1997ARep...41..630L |title=The binary system o per: Orbital elements, component parameters, and helium abundance |last1=Lyubimkov |first1=L. S. |last2=Rachkovskaya |first2=T. M. |last3=Rostopchin |first3=S. I. |last4=Tarasov |first4=A. E. |journal=Astronomy Reports |year=1997 |volume=41 |issue=5 |page=630 }}

| luminosity =

| radius = 9.6

| gravity = 3.4

| rotational_velocity = {{val|70|5}}

| component2 = Ab

| mass2 = 10

| temperature2 = 21,000

| radius2 = 8.9

| gravity2 = 4.0

| rotational_velocity2 = {{val|65|15}}

| age_myr2 = 15

}}

{{Starbox catalog

| names = Atik, 38 Persei, ADS 2726 AB, BD+31°642, CCDM J03443+3217AB, GC 4461, GSC 02359-01258, HIP 17448, HR 1131, HD 23180, SAO 56673, WDS J03443+3217AB

}}

{{Starbox reference

| Simbad = Omicron+Persei

}}

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.{{cite web | url=http://www.ctio.noao.edu/~atokovin/stars/stars.php?cat=HIP&number=17448 | title=Displaying next number in catalog HIP => 17448 | work=Multiple Star Catalog | access-date=2018-02-19}} A's two components are themselves designated Omicron Persei Aa (officially named Atik {{IPAc-en|'|ei|t|I|k}}, the traditional name of the system){{cite book

|last1=Kunitzsch |first1=Paul

|last2=Smart |first2=Tim

|date = 2006 |edition = 2nd rev.

|title = A Dictionary of Modern star Names: A Short Guide to 254 Star Names and Their Derivations

|publisher = Sky Pub |location = Cambridge, Massachusetts

|isbn = 978-1-931559-44-7

}}{{cite web | url=https://www.iau.org/public/themes/naming_stars/ | title=Naming Stars |publisher=IAU.org |access-date=16 December 2017}} and Ab.

Etymology

Image:Omicron Persei.jpg

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).{{cite arXiv |title=On the naming convention used for multiple star systems and extrasolar planets |date=2010 |eprint=1012.0707 |class=astro-ph.SR |last1= Hessman |first1=F. V. |last2= Dhillon |first2=V. S. |last3= Winget |first3=D. E. |last4= Schreiber |first4=M. R. |last5= Horne |first5=K. |last6= Marsh |first6=T. R. |last7= Guenther |first7=E. |last8= Schwope |first8=A. |last9= Heber |first9=U. }}

It bore the traditional name Atik (also Ati, Al Atik), Arabic for "the shoulder". Some sources attribute the name Atik to the nearby, brighter star Zeta Persei.{{cite book|last=Mullaney|first=James |last2=Tirion |first2=Wil|title=The Cambridge Double Star Atlas, Chart 7|year=2009|publisher=University Press, Cambridge|isbn=978-0-521-49343-7}}[http://www.fourmilab.ch/yoursky/catalogues/starname.html Your Sky Object Catalogue: Named Stars] In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN){{citation

| url=https://www.iau.org/science/scientific_bodies/working_groups/280/

| title=IAU Working Group on Star Names (WGSN)

| publisher=International Astronomical Union

| access-date=22 May 2016 | postscript=. }} to catalogue and standardize proper names for stars. The WGSN decided to attribute proper names to individual stars rather than entire multiple systems.{{cite web | url=https://www.iau.org/static/science/scientific_bodies/working_groups/280/wg-starnames-triennial-report-2015-2018.pdf | page=5 | title=WG Triennial Report (2015-2018) - Star Names |access-date=2018-07-14}} 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.

In Chinese, {{lang|zh|卷舌}} ({{lang|zh-Latn|Juǎn Shé}}), meaning Rolled Tongue, refers to an asterism consisting of Omicron Persei, Nu Persei, Epsilon Persei, Xi Persei, Zeta Persei and 40 Persei.{{in lang|zh}} 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, {{ISBN|978-986-7332-25-7}}. Consequently, the Chinese name for Omicron Persei itself is {{lang|zh|卷舌五}} ({{lang|zh-Latn|Juǎn Shé wu}}), "the Fifth Star of Rolled Tongue".{{in lang|zh}} [http://www.lcsd.gov.hk/CE/Museum/Space/Research/StarName/c_research_chinengstars_ala_alz.htm 香港太空館 - 研究資源 - 亮星中英對照表] {{webarchive|url=https://web.archive.org/web/20081025110153/http://www.lcsd.gov.hk/CE/Museum/Space/Research/StarName/c_research_chinengstars_ala_alz.htm |date=2008-10-25 }}, Hong Kong Space Museum. Accessed on line November 23, 2010.

Properties

File:OmicronPerLightCurve.png for Omicron Persei A, plotted from TESS data{{cite web |title=MAST: Barbara A. Mikulski Archive for Space Telescopes |url=https://mast.stsci.edu/portal/Mashup/Clients/Mast/Portal.html |publisher=Space Telescope Science Institute |access-date=8 December 2021}}]]

Omicron Persei A is a spectroscopic binary consisting of a spectral type B1 giant and a type B2 dwarf orbiting each other every 4.4 days. The orbit is near-circular although its inclination is not precisely known. The two stars are separated by approximately {{solar radius|33}}, the exact value depending on the inclination. The primary is approximately one magnitude brighter than the secondary at visual wavelengths. 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.{{cite web |title=omi Per |url=https://www.aavso.org/vsx/index.php?view=detail.top&oid=26207 |website=The International Variable Star Index |publisher=AAVSO |access-date=18 December 2022}}

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.{{cite journal |bibcode=2012A&A...537A.135S |title=X-ray view of IC 348 in the light of an updated cluster census |journal=Astronomy and Astrophysics |volume=537 |pages=A135 |last1=Stelzer |first1=B. |last2=Preibisch |first2=T. |last3=Alexander |first3=F. |last4=Mucciarelli |first4=P. |last5=Flaccomio |first5=E. |last6=Micela |first6=G. |last7=Sciortino |first7=S. |year=2012 |arxiv=1111.4420 |doi=10.1051/0004-6361/201118118 }}

Culture

In the TV series Futurama, the fictional planet Omicron Persei 8 is home to medicinal plants and reptilian extraterrestrials who often attack Earth.{{cite web |title=Omicron Persei 8 meaning explored as hilarious Futurama memes spread |url=https://www.thefocus.news/tv/omicron-persei-8-meaning/ |website=The Focus |access-date=9 October 2022 |date=30 November 2021}}{{cite web |title=How Futurama is related to the new Omicron COVID variant |url=https://www.marca.com/en/lifestyle/tv-shows/2021/11/28/61a327fe268e3e001c8b4576.html |website=MARCA |access-date=9 October 2022 |language=en |date=28 November 2021}}
The USS Atik, named for Omicron Persei Aa, was a ship of the United States Navy.

References

External links

[http://stars.astro.illinois.edu/sow/atik.html Atik]

Category:Perseus (constellation)

Persei, Omicron

Category:B-type giants

Category:B-type main-sequence stars

Category:Spectroscopic binaries

Category:Durchmusterung objects