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Coordinates: Sky map 5h 35m 29.81s, −4° 59′ 51.1″
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'''HOPS 383''' is a Class 0 [[protostar]]. It is the first class-0 protostar discovered to have had an outburst,<ref name=ScienceDaily-2015-03-24>{{cite news |url= https://www.sciencedaily.com/releases/2015/03/150324183632.htm |title= NASA satellites catch 'growth spurt' from newborn protostar |date= 24 March 2015 |publisher= [[Science Daily]] }}</ref> and as of 2020, the youngest protostar known to have had an outburst.<ref name=ScienceDaily-2015-03-24/> The protostar was discovered by the [[Herschel Orion Protostar Survey]] (HOPS) team.<ref name=USDOD-2015-03-06>{{cite web |url= http://science.dodlive.mil/2015/03/06/nrl-astrophysicist-explores-star-formation-in-orions-belt/ |title= NRL Astrophysicist Explores Star Formation in Orion’s Belt |date= 6 March 2015 |publisher= [[U.S. Department of Defense]] }}</ref>
'''HOPS 383''' is a Class 0 [[protostar]]. It is the first class-0 protostar discovered to have had an outburst,<ref name=ScienceDaily-2015-03-24>{{cite news |url= https://www.sciencedaily.com/releases/2015/03/150324183632.htm |title= NASA satellites catch 'growth spurt' from newborn protostar |date= 24 March 2015 |publisher= [[Science Daily]] }}</ref> and as of 2020, the youngest protostar known to have had an outburst.<ref name=ScienceDaily-2015-03-24/> The outburst, discovered by the [[Herschel Orion Protostar Survey]] (HOPS) team, was first reported in February 2015 in [[The Astrophysical Journal Letters]].<ref name=USNRL>{{cite news |title= NRL Astrophysicist Explores Star Formation in Orion’s Belt |first=Donna |last=McKinney |date= 2015-02-25 |publisher= [[United States Naval Research Laboratory]] |url=https://www.nrl.navy.mil/Media/News/Article/2539366/nrl-astrophysicist-explores-star-formation-in-orions-belt/ |access-date=2022-06-24}}</ref>

==Observations==
==Observations==


Revision as of 21:33, 24 June 2022

HOPS 383

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.
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Orion
Right ascension 5h 35m 29.81s
Declination −4° 59′ 51.1″
Characteristics
Evolutionary stage Class 0 protostar
Astrometry
Distance1,400 ly
(420 pc)
Other designations
HOPS 383
Database references
SIMBADdata

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]

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. ^ McKinney, Donna (2015-02-25). "NRL Astrophysicist Explores Star Formation in Orion's Belt". United States Naval Research Laboratory. Retrieved 2022-06-24.
  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

  • 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). "Hops 383: An Outbursting Class 0 Protostar in Orion". The Astrophysical Journal. 800 (1): L5. arXiv:1501.00492. Bibcode:2015ApJ...800L...5S. doi:10.1088/2041-8205/800/1/L5. S2CID 45127705.
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