Astronomy:NGC 3132

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Short description: Planetary nebula in the constellation Vela
NGC 3132
Emission nebula
Planetary nebula
Southern Ring Nebula (NIRCam Image).png
View in near-infrared from NIRCam on the James Webb Space Telescope
Observation data: J2000.0 epoch
Right ascension 10h 07m 01.7640s[1]
Declination−40° 26′ 11.060″[1]
Distance2,000[2] ly
Apparent magnitude (V)9.87[1]
Apparent dimensions (V)62″ × 43″[3]
ConstellationVela
Physical characteristics
Radius0.4[2] ly
DesignationsEight-Burst Nebula,[2] Southern Ring Nebula,[2] Caldwell 74
See also: Lists of nebulae

NGC 3132 (also known as the Eight-Burst Nebula,[2] the Southern Ring Nebula,[2] or Caldwell 74) is a bright and extensively studied planetary nebula in the constellation Vela. Its distance from Earth is estimated at about 613 pc. or 2,000 light-years.[2]

The Southern Ring Nebula was selected as one of the five cosmic objects observed by the James Webb Space Telescope as part of the release of its first official science images on July 12, 2022.[4]

Two images of NGC 3132 in near- and mid-infrared light.[5]

Planetary nebula nucleus (PNN)

Images of NGC 3132 reveal two stars close together within the nebulosity, one of 10th magnitude, the other 16th, located about 1.7″ away from the central star. The central star of the planetary nebula is a white dwarf, and is the fainter of the two stars. This hot central star of about 100,000 K has now blown off its outer layers and is making the nebula fluoresce brightly from the emission of its intense ultraviolet radiation.[6] The 16th magnitude star is an A-type main-sequence star of type A2V, and is separated from the white dwarf by at least 1277 au.[7] The A-type star orbits at roughly the same distance as the edge of a dust cloud surrounding the central white dwarf.[7]

See also

References

  1. ↑ 1.0 1.1 1.2 "NGC 3132". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+3132. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 "Fast Facts – Planetary Nebula NGC 3132". Hubble Heritage Project. Space Telescope Science Institute. http://heritage.stsci.edu/1998/39/fast_facts.html. 
  3. ↑ "Results for NGC 3132". NGC/IC Project Database. http://www.ngcicproject.org/ngcicdb.asp. 
  4. ↑ Garner, Rob (2022-07-08). "NASA Shares List of Cosmic Targets for Webb Telescope's 1st Images". http://www.nasa.gov/feature/goddard/2022/nasa-shares-list-of-cosmic-targets-for-webb-telescope-s-first-images. 
  5. ↑ "Two Views of the Gas in the Southern Ring Nebula (NIRCam and MIRI Composite Images)". October 18, 2023. https://esawebb.org/images/southernring1/. 
  6. ↑ Monreal-Ibero, Ana; Walsh, Jeremy R. (2020). "The MUSE view of the planetary nebula NGC 3132". Astronomy and Astrophysics 634: A47. doi:10.1051/0004-6361/201936845. Bibcode: 2020A&A...634A..47M. 
  7. ↑ 7.0 7.1 Sahai, Raghvendra; Bujarrabal, Valentin; Quintana-Lacaci, Guillermo; Reindl, Nicole; Van De Steene, Griet; Contreras, Carmen Sánchez; Ressler, Michael E. (2023). "The Binary and the Disk: The Beauty is Found within NGC3132 with JWST". The Astrophysical Journal 943 (2): 110. doi:10.3847/1538-4357/aca7ba. Bibcode: 2023ApJ...943..110S. 

External links

Coordinates: Sky map 10h 07m 01.76s, −40° 26′ 11″



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