NGC 2899

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NGC 2899
Emission nebula
Planetary nebula
Planetary nebula NGC 2899 (heic2505d).jpg
NGC 2899, imaged by the Hubble Space Telescope
Observation data: J2000 epoch
Right ascension 09h 27m 03.2s [1]
Declination −56° 06′ 21.1″ [1]
Distance3,350 ± 670 ly (1,026 ± 205 pc) [2]   ly
Apparent magnitude (V)11.8 [3]
Apparent dimensions (V)2.6′ × 1.3′ [4]
Constellation Vela
Designations NGC 2899, Gum 27, PN G277.1-03.8 [5]
See also: Lists of nebulae

NGC 2899 is a planetary nebula in the southern constellation of Vela. It was discovered by English astronomer John Herschel on February 27, 1835. [6] This nebula can be viewed with a moderate-sized amateur telescope, but requires a larger telescope to resolve details. [3] NGC 2899 is located at a distance of 3,350 ± 670 light-years (1,026 ± 205 pc) from the Sun and 25,894 ± 3 light-years (7,939 ± 1 pc) from the Galactic Center. [2]

This nebula has an overall kidney shape that is elongated along an axis from WNW to ESE. [7] The overall topology is bipolar with a significant equatorial structure. This shape is believed to result from a binary star system. The mean expansion rate is 43 to 56 km/s, with high velocity structures expanding at 110 to 130 km/s. The core mass of the central star is estimated as ~1.2  M☉ . [4]

The nebula lies within a large cavity in the surrounding medium. This opening has quadrupolar shape with a physical dimension of 14 pc × 11 pc. The elongation lies along a position angle of 37°±5°, which is aligned with the minor axis of the planetary nebula. This opening was most likely crafted by a fast stellar wind coming from the central star during its asymptotic giant branch stage, prior to the formation of a planetary nebula. The shape and filamentary structures suggest the interaction of a binary star system. [8] [9]

References

  1. 1 2 Cutri, R. M.; et al. (2003). "2MASS All-Sky Catalog of Point Sources". Vizier Online Data Catalog. Bibcode:2003yCat.2246....0C.
  2. 1 2 Stanghellini, Letizia; Haywood, Misha (May 2010). "The Galactic Structure and Chemical Evolution Traced by the Population of Planetary Nebulae". The Astrophysical Journal. 714 (2): 1096–1107. arXiv: 1003.0759 . Bibcode:2010ApJ...714.1096S. doi:10.1088/0004-637X/714/2/1096.
  3. 1 2 Bakich, Michael E. (2010). 1,001 Celestial Wonders to See Before You Die: The Best Sky Objects for Star Gazers. Springer New York. p. 53. ISBN   9781441917775.
  4. 1 2 Lopez, J. A.; et al. (January 1991). "The evolved bipolar planetary nebula NGC 2899". Astronomy and Astrophysics. 241: 526. Bibcode:1991A&A...241..526L.
  5. ↑ "NGC 2899". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 7 July 2015.
  6. ↑ Seligman, Courtney. "Celestial Atlas NGC Objects 2850-2899" . Retrieved 26 October 2013.
  7. ↑ Streicher, Magda (August 2010). "The Ancient Starry Ship" (PDF). Monthly Notes of the Astronomical Society of South Africa. 69 (9 and 10): 147–152. Bibcode:2010MNSSA..69..147S . Retrieved 2024-03-13.
  8. ↑ Weinberger, R.; Aryal, B. (July 2004). Meixner, Margaret; et al. (eds.). Huge Dust Structures and Cavities Around PNe: NGC 6826 and NGC 2899. Asymmetrical Planetary Nebulae III: Winds, Structure and the Thunderbird, Proceedings of the conference held 28 July - 1 August 2003 at Mt. Rainer, Washington, USA. ASP Conference Proceedings. Vol. 313. San Francisco: Astronomical Society of the Pacific. p. 112. Bibcode:2004ASPC..313..112W.
  9. ↑ Aryal, B.; et al. (2009). "Planetary nebulae NGC 6826 and NGC 2899: early aspherical mass loss?". Astrophysics and Space Science. 323 (4): 323–327. Bibcode:2009Ap&SS.323..323A. doi:10.1007/s10509-009-0076-9. S2CID   121783582.
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