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GZ Velorum

Star in the constellation Vela

GZ Velorum
Summary

Star in the constellation Vela

| b-v = +1.635 | u-b =

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.

R band]] [[light curve]] for GZ Velorum, adapted from Kallinger (2019)<ref name=&quot;Kallinger&quot;/>

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

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| display-authors=1 | last1=Richichi | first1=A.

:\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}

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.
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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
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