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Psi7 Aurigae

Star in the constellation Auriga

Psi7 Aurigae
Summary

Star in the constellation Auriga

| r-i = 0.46 | v-r = | b-v = +1.27 | u-b = +1.35

ψ<sup>7</sup> Aurigae in optical light

Psi7 Aurigae, is a star in the northern constellation of Auriga. Its name is a Bayer designation that is Latinized from ψ7 Aurigae, and abbreviated Psi7 Aur or ψ7 Aur. This is a dim, naked eye star with an apparent visual magnitude of 5.02. Based upon parallax measurements, it is approximately 339 ly distant from Earth. It is receding from the Sun with a radial velocity of +60 km/s. Psi7 Aur is a probable member of the Hercules stream of co-moving stars.

ψ7 Aur is an evolved giant star with a stellar classification of K3 III. With 1.7 times the mass of the Sun, at an age of about 700 million it has expanded to almost 20 times the Sun's radius. The outer envelope has an effective temperature of 4,340, giving it an orange colour and a classification as a K-type star. Although cooler than the sun, its larger size means that it is more luminous, emitting in total 162 times as much electromagnetic radiation.

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

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| display-authors=1 | journal=Astronomy and Astrophysics

References

  1. {{cite Gaia DR3. 951619690275198720
  2. (January 2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics.
  3. McWilliam, Andrew. (December 1990). "High-resolution spectroscopic survey of 671 GK giants. I - Stellar atmosphere parameters and abundances". Astrophysical Journal Supplement Series.
  4. Roman, Nancy G.. (July 1952). "The Spectra of the Bright Stars of Types F5-K5". Astrophysical Journal.
  5. (1970). "A catalogue of stellar rotational velocities". Contributi Osservatorio Astronomico di Padova in Asiago.
  6. (1966). "UBVRIJKL photometry of the bright stars". Communications of the Lunar and Planetary Laboratory.
  7. "* 58 Aur".
  8. (December 21, 2004). "The Colour of Stars". Commonwealth Scientific and Industrial Research Organisation.
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-giants auriga bayer-objects bright-star-catalogue-objects durchmusterung-objects flamsteed-objects henry-draper-catalogue-objects hipparcos-objects
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