AH Velorum

{{Short description|Yellow-white hued star in the constellation Vela}}

{{Starbox begin

| name = AH Velorum

}}

{{Starbox observe

| epoch = J2000

| constell = Vela

| ra = {{RA|08|11|59.96702}}

| dec = {{DEC|-46|38|39.6561}}

| appmag_v = 5.70 {{nowrap|(5.50 – 5.89)}}

}}

{{Starbox character

| type =

| class = F7 Ib-II

| b-v = 0.59

| u-b =

| variable = δ Cep

}}

{{Starbox astrometry

| radial_v = {{Val|+26.0|2.9}}

| prop_mo_ra = −4.405

| prop_mo_dec = +6.768

| parallax = 1.2170

| p_error = 0.0570

| parallax_footnote =

| absmag_v = −2.52

}}

{{Starbox detail

| source =

| mass = {{Val|7.0|0.5}}

| radius =

| luminosity = 929.98

| gravity = 1.66

| temperature = 6,102

| metal_fe = +0.09

| rotational_velocity = {{Val|10.0|0.5}}

| age_myr = {{Val|50.0|11.0}}

}}

{{Starbox catalog

| names={{odlist | CD=−46°3902 | HD=68808 | HIP=40155 | HR=3232 | SAO=219587 }}

}}

{{Starbox reference

| Simbad = HD+68808

}}

File:AH Velorum TESS lightcurve.png of the classical Cepheid variable AH Velorum recorded by NASA's Transiting Exoplanet Survey Satellite (TESS)]]

AH Velorum is a single, yellow-white hued star in the constellation Vela. It has an average apparent visual magnitude of 5.70, which makes it bright enough to be dimly visible to the naked eye in good seeing conditions. The distance to this star can be estimated from its annual parallax shift of {{Val|1.217|ul=mas}}, which yields a separation of roughly 2,700 light years. It is moving further away from the Earth with a heliocentric radial velocity of +26 km/s.

It is a bright giant/supergiant of spectral type F7 Ib-II. The star is around 50 million years old with a projected rotational velocity of 10 km/s. It has 7 times the mass of the Sun and is radiating 930 times the Sun's luminosity from its photosphere at an effective temperature of 6,102 K.

A classical Cepheid variable, its apparent magnitude ranges from 5.50 to 5.89 over 4.227171 days. It pulsates in the first overtone, with a fundamental period of 6.04 days.

References

{{reflist|refs=

{{cite web

| url=http://www.aavso.org/vsx/index.php?view=detail.top&oid=37478

| title=AH Velorum | date=4 January 2010 | work=AAVSO Website

| last=Watson |first=Christopher

| publisher=American Association of Variable Star Observers

| accessdate=12 March 2014 }}

{{cite journal

| title=XHIP: An extended hipparcos compilation

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

| journal=Astronomy Letters

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

| bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015

| arxiv=1108.4971 | s2cid=119257644 }}

{{cite journal

| last1=Houk | first1=Nancy | year=1978

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

| journal=Ann Arbor: Dept. Of Astronomy | volume=2 | location=Ann Arbor

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

{{cite journal

| title=Parameters and Abundances in Luminous Stars

| journal=The Astronomical Journal

| last1=Luck | first1=R. Earle

| volume=147 | issue=6 | pages=137 | year=2014

| bibcode=2014AJ....147..137L | doi=10.1088/0004-6256/147/6/137 | doi-access=free }}

{{citation

| last1=Ammler-von Eiff | first1=Matthias | last2=Reiners | first2=Ansgar

| title=New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?

| journal=Astronomy & Astrophysics | arxiv=1204.2459

| volume=542 | page=A116 | date=June 2012 | postscript=.

| doi=10.1051/0004-6361/201118724 | bibcode=2012A&A...542A.116A | s2cid=53666672 }}

{{cite journal

| last1=de Bruijne | first1=J. H. J. | last2=Eilers | first2=A.-C.

| title=Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project

| journal=Astronomy & Astrophysics

| volume=546 | id=A61 | pages=14 | date=October 2012

| doi=10.1051/0004-6361/201219219 | bibcode=2012A&A...546A..61D

| arxiv=1208.3048 | s2cid=59451347 }}

{{citation

| display-authors=1 | last1=Tetzlaff | first1=N.

| last2=Neuhäuser | first2=R. | last3=Hohle | first3=M. M.

| title=A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun

| journal=Monthly Notices of the Royal Astronomical Society

| volume=410 | issue=1 | pages=190–200 | date=January 2011

| doi=10.1111/j.1365-2966.2010.17434.x | doi-access=free | bibcode=2011MNRAS.410..190T

| arxiv=1007.4883 | s2cid=118629873 }}

{{cite journal

| title=General catalogue of variable stars: Version GCVS 5.1

| last1=Samus' | first1=N. N | last2=Kazarovets | first2=E. V

| last3=Durlevich | first3=O. V | last4=Kireeva | first4=N. N

| last5=Pastukhova | first5=E. N | journal=Astronomy Reports

| volume=61 | issue=1 | pages=80–88 | year=2017

| doi=10.1134/S1063772917010085 | bibcode=2017ARep...61...80S | s2cid=125853869 }}

{{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 }}

{{cite journal|bibcode=2016AJ....151..129E |title=Hubble Space Telescope Snapshot Survey for Resolved Companions of Galactic Cepheids |journal=The Astronomical Journal |volume=151 |issue=5 |pages=129 |last1=Evans |first1=Nancy Remage |last2=Bond |first2=Howard E |last3=Schaefer |first3=Gail H |last4=Mason |first4=Brian D |last5=Tingle |first5=Evan |last6=Karovska |first6=Margarita |last7=Pillitteri |first7=Ignazio |year=2016 |doi=10.3847/0004-6256/151/5/129 |arxiv=1603.02224 |s2cid=119248298 |doi-access=free }}

}}

Category:F-type supergiants

Category:F-type bright giants

Category:Classical Cepheid variables

Category:Vela (constellation)

Category:Durchmusterung objects