HOPS_383

HOPS 383

HOPS 383

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HOPS 383 is a Class 0 protostar. It is the first Class 0 protostar discovered to have had an outburst,[1] and as of 2020, the youngest protostar known to have had an outburst.[1] The outburst, discovered by the Herschel Orion Protostar Survey (HOPS) team, was first reported in February 2015 in The Astrophysical Journal Letters.[2]

Quick Facts Constellation, Right ascension ...

Observations

Outburst

HOPS 383 had an outburst between 2004 and 2006 (a "dramatic mid-infrared brightening"); the increase in magnitude was detectable at the 24 μm (35 times increase) and 4.5 μm, and was also detectable at the submillimetre.[3]: 2  After 6 years, observations showed no signs of fading.[3]: 1 

X-Ray

The Chandra X-Ray Observatory detected an X-ray flare from HOPS 383 in December 2017.[4] This was the first detection of X-rays from a Class 0 protostar that will evolve into a sun-like star.[4] The flare lasted 3 hours and 20 minutes.[5] It significantly impacted the previously-thought timeline for when such events occur in the evolution of a protostar. Furthermore, it has improved astronomers' understanding of the Sun's earlier evolutionary stages.

References

  1. [1]
    "NASA satellites catch 'growth spurt' from newborn protostar". Science Daily. 24 March 2015.
  2. [2]
    McKinney, Donna (2015-02-25). "NRL Astrophysicist Explores Star Formation in Orion's Belt". United States Naval Research Laboratory. Retrieved 2022-06-24.
  3. [3]
    Safron, Emily J.; Fischer, William J.; Megeath, S. Thomas; Furlan, Elise; Stutz, Amelia M.; Stanke, Thomas; Billot, Nicolas; Rebull, Luisa M.; Tobin, John J.; Ali, Babar; Allen, Lori E.; Booker, Joseph; Watson, Dan M.; Wilson, T. L. (2015-02-10). "Hops 383: An Outbursting Class 0 Protostar in Orion". The Astrophysical Journal Letters. 800 (1): L5. Bibcode:2015ApJ...800L...5S. doi:10.1088/2041-8205/800/1/L5. hdl:1887/48742. ISSN 2041-8205. OSTI 22364255. S2CID 45127705.
  4. [4]
    "Chandra :: Photo Album :: HOPS 383 :: June 18, 2020". chandra.harvard.edu. Retrieved 2021-12-29.
  5. [5]
    "Chandra Press Room :: X-rays From a Newborn Star Hint at Our Sun's Earliest Days :: 18 June 2020". chandra.harvard.edu. Retrieved 2021-12-30.
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