65 Aurigae

{{short description|Binary star system in the constellation Auriga}}

{{Starbox observe

| epoch=J2000

| ra={{RA|07|22|02.61744}}

| dec={{DEC|+36|45|38.0957}}

| appmag_v=5.12

| constell=Auriga

}}

{{Starbox character

| class=K0 III

| r-i =

| v-r =

| b-v = {{Val|1.082|0.005}}

| u-b =

| variable=

}}

{{Starbox astrometry

| radial_v={{Val|21.81|0.16}}

| prop_mo_ra=−96.915

| prop_mo_dec=−22.436

| parallax=12.9673

| p_error=0.1294

| parallax_footnote =

| absmag_v=0.82

}}

{{Starbox detail

| component1=65 Aur A

| mass=1.34

| radius={{Val|13.02|0.47|2.57}}

| luminosity={{Val|69.6|0.9}}

| temperature={{Val|4575|17|fmt=commas}}

| metal_fe={{Val|−0.35|0.04}}

| gravity=2.72

| rotational_velocity=0.0

| age_gyr=3.31

}}

{{Starbox catalog |

names={{odlist | F=65 Aur | BD=+37°1707 | FK5=2568 | HD=57264 | HIP=35710 | HR=2793 | SAO=60010 }}

}}

{{Starbox reference

| Simbad=65+Aur

}}

65 Aurigae is a binary star system located 252 light years away from the Sun in the northern constellation of Auriga. It is visible to the naked eye as a faint, orange hued star with an apparent visual magnitude of 5.12. The primary, designated component A, is an aging giant star with a stellar classification of K0 III. It is 3.31 billion years old and has expanded to 13 times the Sun's radius after exhausting the hydrogen at its core. Its companion, component B, is a magnitude 11.7 star located at an angular separation of {{Val|11.4|ul=arcsecond}} from the primary, as of 2008. The pair are moving further from the Earth with a heliocentric radial velocity of 22 km/s.

It was also known to be part of a much bigger constellation named Telescopium Herschelii before it was unrecognized by the International Astronomical Union (IAU).

References

{{Reflist|refs=

{{citation

| title=XHIP: An extended hipparcos compilation

| last1=Anderson | first1=E. | last2=Francis | first2=Ch.

| journal=Astronomy Letters | postscript=.

| volume=38 | issue=5 | pages=331 | year=2012

| bibcode=2012AstL...38..331A | arxiv=1108.4971

| doi=10.1134/S1063773712050015 | s2cid=119257644 }}

{{citation

| display-authors=1 | last1=Cenarro | first1=A. J.

| last2=Peletier | first2=R. F. | last3=Sánchez-Blázquez | first3=P.

| last4=Selam | first4=S. O. | last5=Toloba | first5=E.

| last6=Cardiel | first6=N. | last7=Falcón-Barroso | first7=J.

| first8=Gorgas | last8=J. | last9=Jiménez-Vicente | first9=J.

| title=Medium-resolution Isaac Newton Telescope library of empirical spectra - II. The stellar atmospheric parameters

| journal=Monthly Notices of the Royal Astronomical Society

| volume=374 | issue=2 | pages=664–690 | date=January 2007

| doi=10.1111/j.1365-2966.2006.11196.x | doi-access=free | postscript=.

| bibcode=2007MNRAS.374..664C | arxiv=astro-ph/0611618 | s2cid=119428437 }}

{{citation

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

| journal=The Astronomical Journal

| last1=Luck | first1=R. Earle | postscript=.

| volume=150 | issue=3 | pages=88 | year=2015

| bibcode=2015AJ....150...88L | arxiv=1507.01466

| doi=10.1088/0004-6256/150/3/88 | s2cid=118505114

}}

{{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

| 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 | postscript=.

| bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | s2cid=14878976 }}

}}

External links

[http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HR%202793 HR 2793]
[http://webviz.u-strasbg.fr/viz-bin/VizieR-S?CCDM%20J07220%2b3646A CCDM J07220+3646]
[http://aladin.u-strasbg.fr/AladinPreview?-c=07+22+02.6166%2B36+45+38.103&ident=*++65+Aur&submit=Aladin+previewer Image 65 Aurigae]

Category:K-type giants

Category:Binary stars

Category:Auriga

Category:Durchmusterung objects