GZ Velorum

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Star in the constellation Vela

title: "GZ Velorum" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["k-type-bright-giants", "slow-irregular-variables", "vela-(constellation)", "henry-draper-catalogue-objects", "hipparcos-objects", "objects-with-variable-star-designations", "bright-star-catalogue-objects", "durchmusterung-objects"] description: "Star in the constellation Vela" topic_path: "general/k-type-bright-giants" source: "https://en.wikipedia.org/wiki/GZ_Velorum" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Star in the constellation Vela ::

| image = |image=Vela constellation map.svg|alt=|float=center|width=280 |label=|position=right |mark=Red circle.svg|mark_width=10|mark_link=GZ Velorum |x=325|y=650 | caption = Location of GZ Velorum (circled in red) | epoch = J2000 | constell = Vela | ra = | dec = | appmag_v = 4.578 | type = | class = K2.5 II | b-v = +1.635 | u-b = | variable = LC | radial_v = | prop_mo_ra = −13.208 | prop_mo_dec = +1.232 | parallax = 2.4256 | p_error = 0.1938 | parallax_footnote = | absmag_v = −4.16 | source = | mass = | radius = 136 | luminosity = 2,679 - 2,780 | gravity = 2.0 | temperature = 3,986 | metal_fe = −0.4 | rotational_velocity = 2.0 | age_myr = | names= | Simbad = HD+89682

GZ Velorum is a single, orange-hued star in the southern constellation of Vela. It is a faint star but visible to the naked eye, having an apparent visual magnitude of 4.58. The star is located around 1,300 light years from Earth, as determined from its annual parallax shift of . It is moving further away with a heliocentric radial velocity of +13 km/s.

::figure[src="https://upload.wikimedia.org/wikipedia/commons/c/ce/GZVelLightCurve.png" caption="R band]] [[light curve]] for GZ Velorum, adapted from Kallinger (2019)"] ::

This is a bright giant star with a stellar classification of K2.5 II. The star was found to be a variable star when the Hipparcos data was analyzed, in 1996. It is a slow irregular variable of type LC with a frequency of 0.16585 cycles per day. In the R (red) band, the magnitude of the star ranges from 3.43 down to 3.81. The measured angular diameter of this star, after correction for limb darkening, is . At the estimated distance of GZ Vel, this yields a physical size of about 140 times the radius of the Sun.

GZ Vel is 30 million years old with 9 times the mass of the Sun. It is radiating 9,241 times the Sun's luminosity from its photosphere at an effective temperature of 4,140 K.

References

| title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | volume=38 | issue=5 | page=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | s2cid=119257644 | postscript=. }}

| last1=Kazarovets | first1=E. V. | last2=Samus | first2=N. N. | last3=Durlevich | first3=O. V. | last4=Frolov | first4=M. S. | last5=Antipin | first5=S. V. | last6=Kireeva | first6=N. N. | last7=Pastukhova | first7=E. N. | title=The 74th Special Name-list of Variable Stars | journal=Information Bulletin on Variable Stars | date=January 1999 | url=https://ibvs.konkoly.hu/pub/ibvs/4601/4659.pdf | bibcode=1999IBVS.4659....1K}}

| 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 }}

| display-authors=1 | last1=Hohle | first1=M.M. | last2=Neuhäuser | first2=R. | last3=Schutz | first3=B.F. | title=Masses and luminosities of O- and B-type stars and red supergiants | journal=Astronomische Nachrichten | volume=331 | issue=4 | page=349 | year=2010 | bibcode=2010AN....331..349H | doi=10.1002/asna.200911355 | arxiv=1003.2335 | s2cid=111387483 | postscript=. }}

| title=Multiplicity among Solar-type Stars | journal=The Astrophysical Journal | volume=836 | page=139 | year=2017 | display-authors=1 | postscript=. | last1=Fuhrmann | first1=K. | last2=Chini | first2=R. | last3=Kaderhandt | first3=L. | last4=Chen | first4=Z. | issue=1 | bibcode=2017ApJ...836..139F | doi=10.3847/1538-4357/836/1/139 | doi-access=free }}

| display-authors=1 | postscript=. | last1=Lèbre | first1=A. | last2=de Laverny | first2=P. | last3=Do Nascimento | first3=J. D. Jr. | last4=de Medeiros | first4=J. R. | title=Lithium abundances and rotational behavior for bright giant stars | journal=Astronomy and Astrophysics | volume=450 | issue=3 | pages=1173–1179 | date=May 2006 | doi=10.1051/0004-6361:20053485 | bibcode=2006A&A...450.1173L | doi-access=free | url=https://repositorio.ufrn.br/bitstream/123456789/29002/1/LithiumAbundancesAndRotationalBehavior_2006.pdf }}

| last1=Koen | first1=Chris | last2=Eyer | first2=Laurent | title=New periodic variables from the Hipparcos epoch photometry | journal=Monthly Notices of the Royal Astronomical Society | volume=331 | issue=1 | pages=45–59 | date=March 2002 | doi=10.1046/j.1365-8711.2002.05150.x | doi-access=free | bibcode=2002MNRAS.331...45K | arxiv=astro-ph/0112194 | s2cid=10505995 | postscript=. }}

| 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 | pages=80–88 | year=2017 | issue=1 | postscript=. | doi=10.1134/S1063772917010085 | bibcode=2017ARep...61...80S | s2cid=125853869 }}

| display-authors=1 | last1=Richichi | first1=A. | last2=Percheron | first2=I. | last3=Khristoforova | first3=M. | title=CHARM2: An updated Catalog of High Angular Resolution Measurements | journal=Astronomy and Astrophysics | postscript=. | volume=431 | pages=773–777 | date=February 2005 | issue=2 | doi=10.1051/0004-6361:20042039 | bibcode=2005A&A...431..773R | doi-access=free }}

| first1=Kenneth R. | last1=Lang | title=Astrophysical formulae | volume=1 | series=Astronomy and astrophysics library | edition=3rd | publisher=Birkhäuser | date=2006 | isbn=3-540-29692-1 | url=https://books.google.com/books?id=OvTjLcQ4MCQC&pg=PA41 :\begin{align} 2\cdot R_* & = \frac{(412\cdot 3.17\cdot 10^{-3})\ \text{AU}}{0.0046491\ \text{AU}/R_{\bigodot}} \ & \approx 281\cdot R_{\bigodot} \end{align}

| title=The Perkins catalog of revised MK types for the cooler stars | last1=Keenan | first1=Philip C. | last2=McNeil | first2=Raymond C. | journal=Astrophysical Journal Supplement Series | volume=71 | page=245 | year=1989 | postscript=. | doi=10.1086/191373 | bibcode=1989ApJS...71..245K | s2cid=123149047 }}

| last1=Gontcharov | first1=G. A. | title=Pulkovo Compilation of Radial Velocities for 35495 Hipparcos stars in a common system | journal=Astronomy Letters | volume=32| issue=11| pages=759–771| date=November 2006 | doi=10.1134/S1063773706110065 | bibcode=2006AstL...32..759G | arxiv=1606.08053 | s2cid=119231169 | postscript=. }}

References

  1. (2019). "A Catalog of Known Galactic K-M Stars of Class I Candidate Red Supergiants in Gaia DR2". The Astronomical Journal.
  2. "HD 89682".
  3. {{Cite Gaia DR2. 5355253335378307968
  4. (April 2019). "Stellar masses from granulation and oscillations of 23 bright red giants observed by BRITE-Constellation". Astronomy and Astrophysics.

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::

k-type-bright-giantsslow-irregular-variablesvela-(constellation)henry-draper-catalogue-objectshipparcos-objectsobjects-with-variable-star-designationsbright-star-catalogue-objectsdurchmusterung-objects