Epsilon Phoenicis

{{Starbox begin

| name = ε Phoenicis

}}

{{Starbox image

| image =

{{Location mark

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

| label=|position=right

| mark=Red circle.svg | mark_width=10 | mark_link=Epsilon Phoenicis

| x = 622 | y = 270

}}

| caption = Location of ε Phoenicis (circled)

}}

{{Starbox observe

| epoch = J2000

| constell = Phoenix

| ra = {{RA|00|09|24.640}}

| dec = {{DEC|−45|44|50.73}}

| appmag_v = 3.87

}}

{{Starbox character

| type = Red clump

| class = K0III

| b-v = +1.02

| u-b = +0.84

}}

{{Starbox astrometry

| radial_v = −9.20

| prop_mo_ra = +120.393

| prop_mo_dec = −179.597

| pm_footnote =

| parallax = 22.6081

| p_error = 0.1481

| parallax_footnote =

| absmag_v = 0.65

}}

{{Starbox detail

| source =

| mass = {{val|1.93|0.23}}

| radius = {{val|10.03|0.22}}

| temperature = 4,862{{±|42}}

| luminosity = {{val|50.4|1.5}}

| gravity = {{val|2.560|0.103}}

| rotational_velocity = < 1.5

| metal_fe = +0.00{{±|0.08}}

| age_gyr =

}}

{{Starbox catalog

| names = {{odlist | FK5=3 | GC=158 | HIP=765 | HR=25 | HD=496 | SAO=214983 }}

}}

{{Starbox reference

| Simbad = Epsilon+Phoenicis

}}

Epsilon Phoenicis is a star in the southern constellation of Phoenix. It is visible to the naked eye with an apparent visual magnitude of 3.87. The distance to this star is approximately 144 light years based on parallax measurements, but it is drifting closer with a heliocentric radial velocity of −9.2 km/s.

This is an evolved giant star with a stellar classification of K0III, a star that has used up its core hydrogen and has expanded. It is a red clump star, indicating that it has passed the red-giant branch, undergone a helium flash and is currently on the core helium-fusing horizontal branch. Epsilon Phoenicis is about two times more massive than the Sun, and expanded to ten times its radius. It radiates 50 the luminosity of the Sun from its photosphere at an effective temperature of 4,862 K. Based on the elemental abundance of iron in the stellar atmosphere, the metallicity of Epsilon Phoenicis is similar to that of the Sun.

References

{{reflist|refs=

{{Cite journal

| title=Assessment of [Fe/H] determinations for FGK stars in spectroscopic surveys

| display-authors=1 | last1=Soubiran | first1=C.

| last2=Brouillet | first2=N. | last3=Casamiquela | first3=L.

| journal=Astronomy and Astrophysics

| volume=663 | pages=A4 | date=July 1, 2022

| doi=10.1051/0004-6361/202142409 |issn=0004-6361

| bibcode=2022A&A...663A...4S | arxiv=2112.07545 }}

{{citation | postscript=.

| title=A new Large Magellanic Cloud K-band distance from precision measurements of nearby red clump stars

| display-authors=1 | last1=Laney | first1=C. D.

| last2=Joner | first2=M. D. | last3=Pietrzyński | first3=G.

| journal=Monthly Notices of the Royal Astronomical Society

| volume=419 | issue=2 | pages=1637 | year=2012

| bibcode=2012MNRAS.419.1637L

| doi=10.1111/j.1365-2966.2011.19826.x | doi-access=free

| arxiv=1109.4800 | s2cid=117788450 }}

{{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 }}

{{Cite journal | doi=10.1134/S1063773706110065 | bibcode=2006AstL...32..759G| title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system| journal=Astronomy Letters| volume=32| issue=11| pages=759–771| year=2006| last1=Gontcharov| first1=G. A.|arxiv = 1606.08053 | s2cid=119231169}}

{{cite book

| last1=Houk | first1=N.

| title=Michigan catalogue of two-dimensional spectral types for the HD stars

| volume=2 | date=1978

| publisher=Dept. of Astronomy, University of Michigan

| bibcode=1978mcts.book.....H

}}

{{cite journal | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | title=XHIP: An extended hipparcos compilation | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | s2cid=119257644 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=V/137D/XHIP&HIP=765 Vizier catalog entry]

{{cite journal | bibcode=2014A&A...561A.126D | doi=10.1051/0004-6361/201220762 | arxiv=1312.3474 | title=A catalog of rotational and radial velocities for evolved stars | journal=Astronomy & Astrophysics | volume=561 | pages=A126 | year=2014 | last1=De Medeiros | first1=J. R. | last2=Alves | first2=S. | last3=Udry | first3=S. | last4=Andersen | first4=J. | last5=Nordström | first5=B. | last6=Mayor | first6=M. | s2cid=54046583 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/A%2bA/561/A126/table1&HD=496 Vizier catalog entry]

{{Cite journal |last1=Ottoni |first1=G. |last2=Udry |first2=S. |last3=Ségransan |first3=D. |last4=Buldgen |first4=G. |last5=Lovis |first5=C. |last6=Eggenberger |first6=P. |last7=Pezzotti |first7=C. |last8=Adibekyan |first8=V. |last9=Marmier |first9=M. |last10=Mayor |first10=M. |last11=Santos |first11=N. C. |last12=Sousa |first12=S. G. |last13=Lagarde |first13=N. |last14=Charbonnel |first14=C. |date=2022-01-01 |title=CORALIE radial-velocity search for companions around evolved stars (CASCADES). I. Sample definition and first results: Three new planets orbiting giant stars |bibcode=2022A&A...657A..87O |journal=Astronomy and Astrophysics |volume=657 |pages=A87 |doi=10.1051/0004-6361/202040078 |issn=0004-6361|arxiv=2201.01528}} [https://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/A+A/657/A87&HD=496 Epsilon Phoenicis' database entry] at VizieR.

}}

Category:K-type giants

Category:Horizontal-branch stars

Category:Phoenix (constellation)

Phoenicis, Epsilon

0025

Category:Durchmusterung objects

000765

000496