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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 outburst, discovered by the Herschel Orion Protostar Survey (HOPS) team, was first reported in February 2015 in ''[[The Astrophysical Journal|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>
'''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|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==


=== Outburst ===
=== Outburst ===
HOPS 383 had an outburst between 2004 and 2006 (a "dramatic mid-infrared brightening"); the increase in [[Magnitude (astronomy)|magnitude]] was detectable at the 24 μm (35 times increase) and 4.5 μm, and was also detectable at the [[Submillimetre astronomy|submillimetre]].<ref name=AJL>{{Cite journal |last1=Safron |first1=Emily J. |last2=Fischer |first2=William J. |last3=Megeath |first3=S. Thomas |last4=Furlan |first4=Elise |last5=Stutz |first5=Amelia M. |last6=Stanke |first6=Thomas |last7=Billot |first7=Nicolas |last8=Rebull |first8=Luisa M. |last9=Tobin |first9=John J. |last10=Ali |first10=Babar |last11=Allen |first11=Lori E. |last12=Booker |first12=Joseph |last13=Watson |first13=Dan M. |last14=Wilson |first14=T. L. |title=Hops 383: An Outbursting Class 0 Protostar in Orion |date=2015-02-10 |url=https://www.osti.gov/biblio/22364255 |journal=[[The Astrophysical Journal|The Astrophysical Journal Letters]] |volume=800 |issue=1 |pages=L5 |doi=10.1088/2041-8205/800/1/L5 |bibcode=2015ApJ...800L...5S |osti=22364255 |s2cid=45127705 |issn=2041-8205}}</ref>{{Rp|2}} After 6 years, observations showed no signs of fading.<ref name=AJL/>{{Rp|1}}
HOPS 383 had an outburst between 2004 and 2006 (a "dramatic mid-infrared brightening"); the increase in [[Magnitude (astronomy)|magnitude]] was detectable at the 24 μm (35 times increase) and 4.5 μm, and was also detectable at the [[Submillimetre astronomy|submillimetre]].<ref name=AJL>{{Cite journal |last1=Safron |first1=Emily J. |last2=Fischer |first2=William J. |last3=Megeath |first3=S. Thomas |last4=Furlan |first4=Elise |last5=Stutz |first5=Amelia M. |last6=Stanke |first6=Thomas |last7=Billot |first7=Nicolas |last8=Rebull |first8=Luisa M. |last9=Tobin |first9=John J. |last10=Ali |first10=Babar |last11=Allen |first11=Lori E.|author11-link=Lori Allen (astronomer) |last12=Booker |first12=Joseph |last13=Watson |first13=Dan M. |last14=Wilson |first14=T. L. |title=Hops 383: An Outbursting Class 0 Protostar in Orion |date=2015-02-10 |url=https://www.osti.gov/biblio/22364255 |journal=[[The Astrophysical Journal|The Astrophysical Journal Letters]] |volume=800 |issue=1 |pages=L5 |doi=10.1088/2041-8205/800/1/L5 |bibcode=2015ApJ...800L...5S |osti=22364255 |s2cid=45127705 |issn=2041-8205|doi-access=free |hdl=1887/48742 |hdl-access=free }}</ref>{{Rp|2}} After 6 years, observations showed no signs of fading.<ref name=AJL/>{{Rp|1}}


=== X-Ray ===
=== X-Ray ===
The [[Chandra X-ray Observatory|Chandra X-Ray Observatory]] detected an X-ray flare from HOPS 383 in December of 2017.<ref name=":1">{{Cite web|title=Chandra :: Photo Album :: HOPS 383 :: June 18, 2020|url=https://chandra.harvard.edu/photo/2020/hops383/|access-date=2021-12-29|website=chandra.harvard.edu}}</ref> This was the first detection of X-rays from a Class 0 protostar that will evolve into a sun-like star.<ref name=":1" /> The flare lasted 3 hours and 20 minutes.<ref>{{Cite web|title=Chandra Press Room :: X-rays From a Newborn Star Hint at Our Sun's Earliest Days :: 18 June 2020|url=https://chandra.harvard.edu/press/20_releases/press_061820.html|access-date=2021-12-30|website=chandra.harvard.edu}}</ref> 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 [[Sun|the Sun]]'s earlier evolutionary stages.
The [[Chandra X-ray Observatory|Chandra X-Ray Observatory]] detected an X-ray flare from HOPS 383 in December 2017.<ref name=":1">{{Cite web|title=Chandra :: Photo Album :: HOPS 383 :: June 18, 2020|url=https://chandra.harvard.edu/photo/2020/hops383/|access-date=2021-12-29|website=chandra.harvard.edu}}</ref> This was the first detection of X-rays from a Class 0 protostar that will evolve into a sun-like star.<ref name=":1" /> The flare lasted 3 hours and 20 minutes.<ref>{{Cite web|title=Chandra Press Room :: X-rays From a Newborn Star Hint at Our Sun's Earliest Days :: 18 June 2020|url=https://chandra.harvard.edu/press/20_releases/press_061820.html|access-date=2021-12-30|website=chandra.harvard.edu}}</ref> 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 [[Sun|the Sun]]'s earlier evolutionary stages.


==References==
==References==

Latest revision as of 18:49, 20 April 2024

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

[edit]

Outburst

[edit]

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

[edit]

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

[edit]
  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.; 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. ^ 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.
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