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.

                              2022 February 10
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                     T Tauri and Hind's Variable Nebula
   Image Credit & [3]Copyright: [4]Dawn Lowry, Gian Lorenzo Ferretti, Ewa
                           Pasiak and Terry Felty

   Explanation: The star with an orange tint near top center in this dusty
   [5]telescopic frame is T Tauri, prototype of the class of [6]T Tauri
   variable stars. Next to it (right) is a yellow cosmic cloud
   [7]historically known as Hind's Variable Nebula (NGC 1555). About 650
   light-years away, [8]at the boundary of the [9]local bubble and the
   Taurus molecular cloud, both star and nebula are seen to vary
   significantly in brightness but not necessarily at the same time,
   adding to the mystery of the intriguing region. T Tauri stars are now
   generally [10]recognized as young (less than a few million years old),
   sun-like stars still in the [11]early stages of formation. To
   [12]further complicate the picture, infrared observations indicate that
   T Tauri itself is part of a multiple system and suggest that the
   associated [13]Hind's Nebula may also contain a very young stellar
   object. The well-composed image spans about 8 light-years at the
   estimated distance of T Tauri.

                     Tomorrow's picture: pixels in space
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    Authors & editors: [25]Robert Nemiroff ([26]MTU) & [27]Jerry Bonnell
                                 ([28]UMCP)
          NASA Official: Phillip Newman [29]Specific rights apply.
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                A service of: [31]ASD at [32]NASA / [33]GSFC
                           & [34]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2202/NGC1555texas2021.jpg
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. https://www.astrobin.com/users/lowry_pt/
   5. https://www.astrobin.com/tntkhi/
   6. http://www.aavso.org/vsots_ttau
   7. http://adsabs.harvard.edu/doi/10.1086/145232
   8. https://arxiv.org/abs/2201.05124
   9. https://skyandtelescope.org/astronomy-news/1000-light-year-bubble-is-the-source-of-all-nearby-baby-stars/?utm_source=cc&utm_medium=newsletter
  10. https://www.nasa.gov/content/goddard/hubble-catches-jets-bubbles-bursts-of-light-in-taurus/
  11. http://hyperphysics.phy-astr.gsu.edu/hbase/astro/gravc.html
  12. http://arxiv.org/abs/astro-ph/0406337
  13. http://www.daviddarling.info/encyclopedia/H/Hind.html
  14. https://apod.nasa.gov/apod/ap220209.html
  15. https://apod.nasa.gov/apod/archivepix.html
  16. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  17. https://apod.nasa.gov/apod/lib/aptree.html
  18. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  19. https://apod.nasa.gov/apod/calendar/allyears.html
  20. https://apod.nasa.gov/apod.rss
  21. https://apod.nasa.gov/apod/lib/edlinks.html
  22. https://apod.nasa.gov/apod/lib/about_apod.html
  23. http://asterisk.apod.com/discuss_apod.php?date=220210
  24. https://apod.nasa.gov/apod/ap220211.html
  25. http://www.phy.mtu.edu/faculty/Nemiroff.html
  26. http://www.phy.mtu.edu/
  27. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  28. http://www.astro.umd.edu/
  29. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  30. https://www.nasa.gov/about/highlights/HP_Privacy.html
  31. https://astrophysics.gsfc.nasa.gov/
  32. https://www.nasa.gov/
  33. https://www.nasa.gov/centers/goddard/
  34. http://www.mtu.edu/