HOPS 383

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Coordinates: Sky map 5h 35m 29.81s, −4° 59′ 51.1″

Infrared images from instruments at Kitt Peak National Observatory (left) and NASA's Spitzer Space Telescope document the outburst of HOPS 383, a young protostar in the Orion star-formation complex. The background is a wide view of the region taken from a Spitzer four-color infrared mosaic.
383
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Orion
Right ascension 5h 35m 29.81s
Declination −4° 59′ 51.1″
Distance1,400 ly
(420 pc)
Spectral typeClass 0 protostar
Other designations
383

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 protostar was discovered by the (HOPS) team.[2]

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] After 6 years, observations showed no signs of fading.[3]

X-Ray[]

The Chandra X-Ray Observatory detected an X-ray flare from HOPS 383 in December of 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. ^ a b "NASA satellites catch 'growth spurt' from newborn protostar". Science Daily. 24 March 2015.
  2. ^ "NRL Astrophysicist Explores Star Formation in Orion's Belt". U.S. Department of Defense. 6 March 2015.
  3. ^ a b Safron, Emily J.; Megeath, S. Thomas; Booker, Joseph; Fischer, William J.; Furlan, Elise; Rebull, Luisa M.; Stutz, Amelia M.; Stanke, Thomas; Billot, Nicolas; Tobin, John J.; Ali, Babar (2015-02-10). "HOPS 383: AN OUTBURSTING CLASS 0 PROTOSTAR IN ORION". Astrophysical Journal Letters. 800 (1). doi:10.1088/2041-8205/800/1/L5. ISSN 2041-8205.
  4. ^ a b "Chandra :: Photo Album :: HOPS 383 :: June 18, 2020". chandra.harvard.edu. Retrieved 2021-12-29.
  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.

Further reading[]

  • "HOPS 383: An Outbursting Class 0 Protostar in Orion"; Emily J. Safron, William J. Fischer, S. Thomas Megeath, Elise Furlan, Amelia M. Stutz, Thomas Stanke, Nicolas Billot, Luisa M. Rebull, John J. Tobin, Babar Ali, Lori E. Allen, Joseph Booker, Dan M. Watson, T. L. Wilson; The Astrophysical Journal Letters, Volume 800, Issue 1, article id. L5, 6 pp. (2015) February 2015; arXiv:1501.00492; Bibcode:2015ApJ...800L...5S; doi:10.1088/2041-8205/800/1/L5;


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