{{Short description|Star in the constellation Vela}} {{about|q Velorum|Q Velorum|HD 88206}} {{Starbox begin}} {{Starbox image | image= {{Location mark |image=Vela constellation map.svg|alt=|float=center|width=280 |label=|position=right |mark=Red circle.svg|mark_width=10|mark_link=HD 88955 |x=300|y=292 }} |caption=Location of HD 88955 (circled) }} {{Starbox observe | epoch = J2000 | constell = Vela<ref name=Anderson2012/> | ra = {{RA|10|14|44.1557}}<ref name=GaiaDR3/> | dec = {{DEC|−42|07|18.989}}<ref name=GaiaDR3/> | appmag_v = 3.85<ref name=Malagnini1990/> }} {{Starbox character | type = main sequence<ref name=lagrange2009/> | class = A2 V<ref name=Malagnini1990/> | b-v = {{Val|+0.051|0.005}}<ref name=Anderson2012/> | variable = }} {{Starbox astrometry | radial_v = {{Val|+7.4|2.7}}<ref name=deBruijne2012/> | prop_mo_ra = −149.929<ref name=GaiaDR3/> | prop_mo_dec = +49.548<ref name=GaiaDR3/> | parallax = 31.6369 | p_error = 0.1684 | parallax_footnote = <ref name=GaiaDR3/> | absmag_v = 1.39<ref name=Anderson2012/> }} {{Starbox detail | source = | mass = 2.17<ref name=Gaspar2016/> | radius = 2.11<ref name=Gaspar2016/> | luminosity = 23.24<ref name=Gaspar2016/> | gravity = {{Val|4.08|0.14}}<ref name=David2015/> | temperature = {{Val|9451|321|fmt=commas}}<ref name=David2015/> | metal_fe = −0.02<ref name=Saffe2008/> | rotational_velocity = {{Val|100|4}}<ref name=Hales2017/> | age_myr = 410<ref name=Gaspar2016/> }} {{Starbox catalog | names = {{odlist | B=q Velorum | FK5=382 | CD=−41°5713 | HD=88955 | HIP=50191 | HR=4023 | SAO=221895 | GC=14076 }}<ref name=SIMBAD/> }} {{Starbox reference | Simbad = HD+88955 }} {{Starbox end}}
'''HD 88955''' is a single,<ref name=Eggleton2008/> white-hued star in the southern constellation of Vela. It can be viewed with the naked eye, having an apparent visual magnitude of 3.85.<ref name=Malagnini1990/> The distance to HD 88955 can be determined from its annual parallax shift of {{Val|31.6|ul=mas}},<ref name=GaiaDR3/> which yields a distance of 103 light years from the Sun. It is moving further from the Earth with a heliocentric radial velocity of +7 km/s.<ref name=deBruijne2012/> Bayesian analysis suggests HD 88955 is a member of the Argus Association,<ref name=Malo2013/> a group of co-moving stars usually associated with the IC 2391 open cluster.
This is an A-type main-sequence star with a stellar classification of A2 V.<ref name=Malagnini1990/> It is about 410 million years old<ref name=Gaspar2016/> with a projected rotational velocity of 100 km/s.<ref name=Hales2017/> The star has 2.17 times the mass of the Sun<ref name=Gaspar2016/> and 2.11 times the Sun's radius.<ref name=Gaspar2016/> It is radiating 23 times the Sun's luminosity<ref name=Gaspar2016/> from its photosphere at an effective temperature of 9,451 K.<ref name=David2015/> An infrared excess has been detected from HD 88955, which analysis suggests is a {{Val|3.6|3.0|e=−7||ul=Earth mass}} debris disc with a mean temperature of {{Val|138|21|u=K}} orbiting the host star at an average distance of {{Val|19.3|5.7|ul=AU}}.<ref name=thureau2014/>
==References== <references>
<ref name=SIMBAD>{{cite simbad | title=HD 85622 | access-date=2018-08-08 }}</ref>
<ref name=GaiaDR3>{{Cite Gaia DR3|5416916936743969152}}</ref>
<ref name=Anderson2012>{{cite XHIP|50191}}</ref>
<ref name=Malagnini1990>{{citation | last1=Malagnini | first1=M. L. | last2=Morossi | first2=C. | title=Accurate absolute luminosities, effective temperatures, radii, masses and surface gravities for a selected sample of field stars | journal=Astronomy and Astrophysics Supplement Series | volume=85 | issue=3 | pages=1015–1019 | date=November 1990 | bibcode=1990A&AS...85.1015M | postscript=. }}</ref>
<ref name=Hales2017>{{citation | postscript=. | title=Atomic gas in debris discs | display-authors=1 | last1=Hales | first1=Antonio S. | last2=Barlow | first2=M. J. | last3=Crawford | first3=I. A. | last4=Casassus | first4=S. | journal=Monthly Notices of the Royal Astronomical Society | volume=466 | issue=3 | pages=3582–3593 | date=April 2017 | doi=10.1093/mnras/stw3274 | doi-access=free | bibcode=2017MNRAS.466.3582H | arxiv=1612.05465 | s2cid=119223132 }}</ref>
<ref name=Gaspar2016>{{citation | title=The Correlation between Metallicity and Debris Disk Mass | display-authors=1 | last1=Gáspár | first1=András | last2=Rieke | first2=George H. | last3=Ballering | first3=Nicholas | journal=The Astrophysical Journal | postscript=. | volume=826 | issue=2 | id=171 | pages=14 | date=August 2016 | doi=10.3847/0004-637X/826/2/171 | bibcode=2016ApJ...826..171G | arxiv=1604.07403| s2cid=119241004 | doi-access=free }}</ref>
<ref name=David2015>{{citation | last1=David | first1=Trevor J. | last2=Hillenbrand | first2=Lynne A. | 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 | bibcode=2015ApJ...804..146D | doi=10.1088/0004-637X/804/2/146 | arxiv=1501.03154 | s2cid=33401607 | postscript=. }}</ref>
<ref name=thureau2014>{{citation | postscript=. | title=An unbiased study of debris discs around A-type stars with Herschel | journal=Monthly Notices of the Royal Astronomical Society | display-authors=1 | last1=Thureau | first1=N. D. | last2=Greaves | first2=J. S. | last3=Matthews | first3=B. C. | last4=Kennedy | first4=G. | last5=Phillips | first5=N. | last6=Booth | first6=M. | last7=Duchêne | first7=G. | last8=Horner | first8=J. | last9=Rodriguez | first9=D. R. | last10=Sibthorpe | first10=B. | last11=Wyatt | first11=M. C. | volume=445 | issue=3 | pages=2558 | year=2014 | bibcode=2014MNRAS.445.2558T | doi=10.1093/mnras/stu1864 | doi-access=free | hdl=10023/6011 | hdl-access=free }}</ref>
<ref name=Malo2013>{{citation | title=Bayesian Analysis to Identify New Star Candidates in Nearby Young Stellar Kinematic Groups | display-authors=1 | last1=Malo | first1=Lison | last2=Doyon | first2=René | last3=Lafrenière | first3=David | last4=Artigau | first4=Étienne | last5=Gagné | first5=Jonathan | last6=Baron | first6=Frédérique | last7=Riedel | first7=Adric | journal=The Astrophysical Journal | volume=762 | issue=2 | id=88 | pages=50 | date=January 2013 | doi=10.1088/0004-637X/762/2/88 | bibcode=2013ApJ...762...88M | arxiv=1209.2077 | s2cid=118497872 | postscript=. }}</ref>
<ref name=Saffe2008>{{citation | display-authors=1 | last1=Saffe | first1=C. | last2=Gómez | first2=M. | last3=Pintado | first3=O. | last4=González | first4=E. | title=Spectroscopic metallicities of Vega-like stars | journal=Astronomy and Astrophysics | volume=490 | issue=1 | pages=297–305 | date=October 2008 | doi=10.1051/0004-6361:200810260 | bibcode=2008A&A...490..297S | arxiv=0805.3936 | s2cid=15059920 | postscript=. }}</ref>
<ref name=Eggleton2008>{{citation | 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 | arxiv=0806.2878 | bibcode=2008MNRAS.389..869E | s2cid=14878976 | postscript=. }}</ref>
<ref name=deBruijne2012>{{citation | 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 | postscript=. }}</ref>
<ref name=lagrange2009>{{cite journal |last1=Lagrange |first1=A.-M. |last2=Desort |first2=M. |last3=Galland |first3=F. |last4=Udry |first4=S. |last5=Mayor |first5=M. |title=Extrasolar planets and brown dwarfs around A-F type stars. VI. High precision RV survey of early type dwarfs with HARPS |journal=Astronomy and Astrophysics |date=2009 |volume=495 |issue=1 |page=335 |doi=10.1051/0004-6361:200810105 |arxiv=0809.4636 |bibcode=2009A&A...495..335L }}</ref>
</references>
{{Stars of Vela}}
Category:A-type main-sequence stars Category:Circumstellar disks Category:Vela (constellation) Velorum, q Category:Durchmusterung objects 088955 050191 4023