Simeis 147

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. Discovered in 1952 at the Crimean Astrophysical Observatory using a 25-inch Schmidt-Cassegrain telescope, it is difficult to observe due to its extremely low brightness.

Simeis 147
The supernova remnant nebula from Simeis 147 or the Spaghetti Nebula.
Other designations3FHL J0537.6+2751e, 2FGL J0538.1+2718, 3FGL J0540.3+2756e, 2FHL J0534.1+2753
Event typeSupernova remnant 
Spectral classUnknown
Date1952[1]
InstrumentCrimean Astrophysical Observatory 
ConstellationTaurus
Right ascension 05h 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
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The nebulous area is fairly large with an almost spherical shell and 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]

It is believed that after its stellar explosion a rapidly spinning neutron star known as pulsar PSR J0538+2817 was left behind 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.

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