omega Persei

{{Starbox begin

| name = Omega Persei

}}

{{Starbox image

| image=

{{Location mark

| image=Perseus_IAU.svg|alt=|float=center|width=260

| label= | position=right

| mark=Red circle.svg | mark_width=10 | mark_link=ω Per

| x=636 | y=524

}}

|caption=Location of ω Persei (circled)

}}

{{Starbox observe

| epoch = J2000.0

| equinox = J2000.0 (ICRS)

| constell = Perseus

| ra = {{RA|03|11|17.38161}}

| dec = {{DEC|+39|36|41.7014}}

| appmag_v = +4.614

}}

{{Starbox character

| type = red clump

| class = K0 III

| b-v = 1.122

| u-b =

| r-i =

| variable =

}}

{{Starbox astrometry

| radial_v = 6.61

| prop_mo_ra = −26.26

| prop_mo_dec = +5.40

| parallax = 11.32

| p_error = 0.23

| parallax_footnote =

| absmag_v = −0.234

}}

{{Starbox detail

| source =

| mass = 2.04

| radius = 19

| luminosity = 144.5

| temperature = {{Val|4586|18|fmt=commas}}

| gravity = 2.5

| metal_fe = −0.10

| rotational_velocity = 3.3

| age_gyr = 1.65

}}

{{Starbox catalog

| names = {{odlist | B=ω Per | F=28 Persei | FK5=2667 | BD=+39°724 | HD=19656 | HIP=14817 | HR=947 | SAO=56224 | WDS=J03113+3937A }}

}}

{{Starbox reference

| Simbad = ome+Per

}}

Omega Persei (ω Persei) is a solitary, orange-hued star in the northern constellation of Perseus. The star is faintly visible to the naked eye with an apparent visual magnitude of +4.6. Based upon an annual parallax shift of 11.32 mas as seen from the Earth, the star is about 288 light years from the Sun.

ω Persei has the traditional name Gorgonea Quarta {{IPAc-en|g|ɔːr|g|@|'|n|iː|@|_|'|k|w|ɔːr|t|@}}, being the fourth member of the quartet called the Gorgonea in reference to the Gorgons from the legend of Perseus.

This is an evolved K-type giant star with a stellar classification of K0 III. It is a red clump star that is generating energy via helium fusion at its core. At the estimated age of 1.65 billion years, Omega Persei has double times the mass of the Sun and has expanded to about 19 times the Sun's radius. It is radiating 144.5 times the Sun's luminosity from its photosphere at an effective temperature of 4,586 K.

References

{{reflist|refs=

{{citation

| title=Validation of the new Hipparcos reduction

| last1=van Leeuwen | first1=F.

| journal=Astronomy and Astrophysics

| volume=474 | issue=2 | pages=653–664 | date=2007

| arxiv=0708.1752 | bibcode=2007A&A...474..653V

| doi=10.1051/0004-6361:20078357 | s2cid=18759600 | postscript=. }}

{{citation

| last1=Alves | first1=David R.

| title=K-Band Calibration of the Red Clump Luminosity

| journal=The Astrophysical Journal

| volume=539 | issue=2 | pages=732–741 | date=August 2000

| doi=10.1086/309278 | bibcode=2000ApJ...539..732A

| arxiv=astro-ph/0003329 | s2cid=16673121

| postscript=. }}

{{citation

| last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A.

| title=A catalogue of multiplicity among bright stellar systems

| journal=Monthly Notices of the Royal Astronomical Society

| volume=389 | issue=2 | pages=869–879 | date=September 2008

| doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | bibcode=2008MNRAS.389..869E

| arxiv=0806.2878 | s2cid=14878976 | postscript=. }}

{{citation | display-authors=1

| last1=Massarotti | first1=Alessandro | last2=Latham | first2=David W.

| last3=Stefanik | first3=Robert P. | last4=Fogel | first4=Jeffrey

| title=Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity

| journal=The Astronomical Journal | postscript=.

| volume=135 | issue=1 | pages=209–231 | date=January 2008

| doi=10.1088/0004-6256/135/1/209 | bibcode=2008AJ....135..209M | s2cid=121883397 | doi-access=free }}

{{citation | display-authors=1

| last1=Soubiran | first1=C. | last2=Bienaymé | first2=O.

| last3=Mishenina | first3=T. V. | last4=Kovtyukh | first4=V. V.

| title=Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants

| journal=Astronomy and Astrophysics

| year=2008 | volume=480 | issue=1 | pages=91–101

| bibcode=2008A&A...480...91S | doi=10.1051/0004-6361:20078788

| arxiv=0712.1370 | s2cid=16602121 | postscript=. }}

{{citation

| title=Abundances in the Local Region. I. G and K Giants

| last1=Luck | first1=R. Earle

| journal=The Astronomical Journal

| doi=10.1088/0004-6256/150/3/88 | bibcode=2015AJ....150...88L

| arxiv=1507.01466 | s2cid=118505114 | postscript=. }}

{{cite simbad

| title=ome Per

| access-date=2017-06-19 }}

{{citation

| first1=Richard Hinckley | last1=Allen

| title=Star-names and their meanings

| publisher=G. E. Stechert | year=1899 | page=334

| url=https://books.google.com/books?id=5xQuAAAAIAAJ&pg=PA334 }}

}}

Category:K-type giants

Category:Horizontal-branch stars

Persei, Omega

Category:Perseus (constellation)