Epsilon Pavonis

{{Short description|Star in the constellation Pavo}}

{{Starbox begin

| name = ε Pavonis

}}

{{Starbox image

|image=

{{Location mark

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

|label=|position=right

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

|x=434|y=504

}}

|caption=Location of ε Pavonis (circled)

}}

{{Starbox observe

| epoch = J2000

| constell = Pavo

| ra = {{RA|20|00|35.55558}}{{cite journal | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | year=2007 | last1=Van Leeuwen | first1=F. | s2cid=18759600 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-S?HIP%2098495 Vizier catalog entry]

| dec = {{DEC|-72|54|37.8198}}

| appmag_v = 3.97{{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=98495 Vizier catalog entry]

}}

{{Starbox character

| class = A0 Va

| b-v = −0.03

| u-b = −0.05{{cite journal | bibcode=2006yCat.2168....0M | title=VizieR Online Data Catalog: Homogeneous Means in the UBV System (Mermilliod 1991) | journal=VizieR On-line Data Catalog: II/168. Originally Published in: Institut d'Astronomie | volume=2168 | last1=Mermilliod | first1=J. C. | year=2006 }}[http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=II/168/ubvmeans&LID=%2B100188228 Vizier catalog entry]

}}

{{Starbox astrometry

| radial_v = {{Val|−6.7|0.7}}{{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}}

| prop_mo_ra = +81.78

| prop_mo_dec = −132.16

| parallax = 31.04

| p_error = 0.17

| parallax_footnote =

| absmag_v = 1.43

}}

{{Starbox detail

| mass = 2.2{{cite journal | bibcode=2011MNRAS.410..190T | doi=10.1111/j.1365-2966.2010.17434.x | arxiv=1007.4883 | title=A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun | journal=Monthly Notices of the Royal Astronomical Society | volume=410 | pages=190–200 | year=2011 | last1=Tetzlaff | first1=N. | last2=Neuhäuser | first2=R. | last3=Hohle | first3=M. M. | issue=1 | doi-access=free | s2cid=118629873 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/MNRAS/410/190/table1&HIP=98495 Vizier catalog entry]

| temperature = 10,440{{cite journal | bibcode=2015ApJ...804..146D | doi=10.1088/0004-637X/804/2/146 | arxiv=1501.03154 | title=The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets | journal=The Astrophysical Journal | volume=804 | issue=2 | pages=146 | year=2015 | last1=David | first1=Trevor J. | last2=Hillenbrand | first2=Lynne A. | s2cid=33401607 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/ApJ/804/146/table5&HIP=98495 Vizier catalog entry]

| radius = 1.74{{citation | display-authors=1

| last1=Gerbaldi | first1=M. | last2=Faraggiana | first2=R.

| last3=Burnage | first3=R. | last4=Delmas | first4=F.

| last5=Gómez | first5=A. E. | last6=Grenier | first6=S.

| title=Search for reference A0 dwarf stars: Masses and luminosities revisited with HIPPARCOS parallaxes

| journal=Astronomy and Astrophysics Supplement | postscript=.

| volume=137 | issue=2 | pages=273–292 |date=June 1999

| doi=10.1051/aas:1999248 | bibcode=1999A&AS..137..273G | doi-access=free }}

| gravity = {{Val|4.32|0.02}}

| age_myr = 27

| luminosity = 32{{cite journal | arxiv=1201.2052 | bibcode=2012A&A...537A.120Z | doi=10.1051/0004-6361/201117691 | year = 2012 | title = Rotational velocities of A-type stars | journal = Astronomy & Astrophysics | volume = 537 | pages = A120 | last1 = Zorec | first1 = J. | last2 = Royer | first2 = F. | s2cid=55586789 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/A%2bA/537/A120/table1&HD=188228 Vizier catalog entry]

| rotational_velocity = 85

}}

{{Starbox catalog

| names = {{odlist | B=ε Pav | CPD=−73° 2086 | FK5=748 | HD=188228 | HIP=98495 | HR=7590 | SAO=257757 | GC=27631 }}

}}

{{Starbox reference

| Simbad = Epsilon+Pavonis

}}

{{Starbox end}}

Epsilon Pavonis, Latinized from ε Pavonis, is a single,{{cite journal | title=A catalogue of multiplicity among bright stellar systems | last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A. | journal=Monthly Notices of the Royal Astronomical Society | volume=389 | issue=2 | pages=869 | date=2008 | doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | s2cid=14878976 }} white-hued star in the constellation Pavo. It can be viewed with the naked eye, having an apparent visual magnitude of 3.97. The annual parallax shift of 31.04 mas provides a distance estimate of 105 light years from the Sun. This star is a member of the proposed Argus Association, a young moving group of more than 60 stars associated with the IC 2391 cluster.{{cite journal | title=The Tucana/Horologium, Columba, AB Doradus, and Argus Associations: New Members and Dusty Debris Disks | display-authors=1 | last1=Zuckerman | first1=B. | last2=Rhee | first2=Joseph H. | last3=Song | first3=Inseok | last4=Bessell | first4=M. S. | journal=The Astrophysical Journal | volume=732 | issue=2 | id=61 | pages=19 | date=May 2011 | doi=10.1088/0004-637X/732/2/61 | bibcode=2011ApJ...732...61Z | arxiv=1104.0284 | s2cid=62797470 }} Epsilon Pavonis is moving closer to the Sun with a radial velocity of −6.7 km/s.

With a stellar classification of A0 Va, Epsilon Pavonis is an ordinary A-type main-sequence star that is generating energy through hydrogen fusion at its core. It is just 27 million years old with a projected rotational velocity of 85 km/s. The star has 2.2 times the mass of the Sun and 1.74 the Sun's radius. It is radiating 32 times the Sun's luminosity from its photosphere at an effective temperature of 10,440 K.