Simeis 147
Simeis 147
The supernova remnant nebula from Simeis 147 or the Spaghetti Nebula.
Event typeSupernova remnant Edit this on Wikidata
Unknown
Date1952[1]
ConstellationTaurus
Right ascension05h 39m 06s
Declination+27° 59′ 55″
EpochJ2000
Galactic coordinatesUnknown
Distance3,000 light-years (0.92 kpc)
RemnantMixed-morphology
HostMilky way
ProgenitorUnknown
Progenitor typeUnknown
Colour (B-V)Unknown
Peak apparent magnitude6.5
Other designations3FHL J0537.6+2751e, 2FGL J0538.1+2718, 3FGL J0540.3+2756e, 2FHL J0534.1+2753
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Simeis 147, also known as the Spaghetti Nebula, SNR G180.0-01.7 or Sharpless 2-240, is a supernova remnant (SNR) in the Milky Way, straddling the border between the constellations Auriga and Taurus. It was discovered in 1952 at the Crimean Astrophysical Observatory by Grigory Shajn and his team using a Schmidt camera and a narrowband filter close to the Hydrogen Alpha transmission line. It is difficult to observe due to its extremely low brightness. This discovery was part of a survey conducted between 1945 and 1955, most likely using captured German equipment, as the observatory was practically destroyed during WWII. The Schmidt camera had a field of view of 175'. Many previously unknown hydrogen nebula were discovered this way, as they are not readily visible in regular photographs.

The nebulous area has an almost spherical shell and a filamentary structure.[2] The remnant has an apparent diameter of approximately 3 degrees, an estimated distance of approximately 3000 (±350) light-years, and an age of approximately 40,000 years.[3] At that distance, it spans roughly 160 lightyears.

It is believed that the stellar explosion left behind a rapidly spinning neutron star known as pulsar PSR J0538+2817 in the nebula core, emitting a strong radio signal.[4]

References

  1. ↑ "Simeis 147, Supernova Remnant in Taurus". AstroPix. 28 February 2013.
  2. ↑ "VizieR query result". Centre de Données astronomiques de Strasbourg. 20 December 2013.
  3. ↑ Nemiroff, R.; Bonnell, J., eds. (9 October 2012). "Simeis 147: Supernova Remnant". Astronomy Picture of the Day. NASA.
  4. ↑ "SNR G180.0–01.7". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 20 December 2013.
  • VizieR Query
  • SIMBAD Query
  • APOD NASA 2016 April 25
  • APOD NASA 2017 May 18
  • Reference for amateur astronomers, P.G.Kulikovskii, 1971, p167.
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