Astronomy Picture of the Day

   [1]Discover the cosmos! Each day a different image or photograph of our
      fascinating universe is featured, along with a brief explanation
                    written by a professional astronomer.

                               2024 January 26
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                       Epsilon Tauri: Star with Planet
                  Image Credit & [3]Copyright: [4]Reg Pratt

   Explanation: [5]Epsilon Tauri lies 146 light-years away. A K-type
   [6]red giant star, epsilon Tau is cooler than the Sun, but with about
   13 times the solar radius it has nearly 100 times the solar luminosity.
   A member of the [7]Hyades open star cluster the giant star is known by
   the [8]proper name Ain, and along with brighter giant star Aldebaran,
   forms the eyes of Taurus the Bull. Surrounded by dusty, dark clouds in
   Taurus, epsilon Tau is also known to have a planet. Discovered by
   [9]radial velocity measurements in 2006, [10]Epsilon Tauri b is a gas
   giant planet larger than Jupiter with an orbital period of 1.6 years.
   And though the exoplanet can't be seen directly, on a dark night its
   parent star epsilon Tauri is easily visible to the unaided eye.

                      Tomorrow's picture: light-weekend
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    Authors & editors: [22]Robert Nemiroff ([23]MTU) & [24]Jerry Bonnell
                                 ([25]UMCP)
          NASA Official: Amber Straughn [26]Specific rights apply.
              [27]NASA Web Privacy Policy and Important Notices
                A service of: [28]ASD at [29]NASA / [30]GSFC,
                         [31]NASA Science Activation
                           & [32]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2401/Ain_4096.jpg
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. https://www.r3gdigital.com/
   5. http://stars.astro.illinois.edu/sow/ain.html
   6. https://en.wikipedia.org/wiki/Red_giant
   7. https://apod.nasa.gov/apod/ap121224.html
   8. https://en.wikipedia.org/wiki/List_of_proper_names_of_stars
   9. https://exoplanets.nasa.gov/alien-worlds/ways-to-find-a-planet/#/1
  10. https://exoplanets.nasa.gov/exoplanet-catalog/7044/epsilon-tauri-b/
  11. https://apod.nasa.gov/apod/ap240125.html
  12. https://apod.nasa.gov/apod/archivepix.html
  13. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  14. https://apod.nasa.gov/apod/lib/aptree.html
  15. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  16. https://apod.nasa.gov/apod/calendar/allyears.html
  17. https://apod.nasa.gov/apod.rss
  18. https://apod.nasa.gov/apod/lib/edlinks.html
  19. https://apod.nasa.gov/apod/lib/about_apod.html
  20. http://asterisk.apod.com/discuss_apod.php?date=240126
  21. https://apod.nasa.gov/apod/ap240127.html
  22. http://www.phy.mtu.edu/faculty/Nemiroff.html
  23. http://www.phy.mtu.edu/
  24. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  25. http://www.astro.umd.edu/
  26. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  27. https://www.nasa.gov/about/highlights/HP_Privacy.html
  28. https://astrophysics.gsfc.nasa.gov/
  29. https://www.nasa.gov/
  30. https://www.nasa.gov/centers/goddard/
  31. https://science.nasa.gov/learners
  32. http://www.mtu.edu/