NGC 2867 (also known as Caldwell 90) is an elliptical[5] Type II[7]planetary nebula in the southern constellation of Carina, just over a degree to the NNW of the star Iota Carinae.[8] It was discovered by John Herschel on April 1, 1834. Herschel initially thought he might have found a new planet, but on the following night he checked again and discovered it had not moved.[3] The nebula is located at a distance of 7,270 light-years from the Sun.[2]
The central star of the nebula is of spectral typeWC3[9] and is in the process of evolving into a white dwarf, having previously shed the atmosphere that created the surrounding nebula. It is now a hydrogen deficient GW Vir variable that is undergoing non-radial pulsations with an amplitude of less than 0.3 in magnitude. The star has an estimated temperature of 165+18 −20kK with 5% of the radius of the Sun and is radiating 1,400 times the Sun's luminosity.[5]
The surrounding nebula is fairly typical but does shows carbon enrichment, which suggests the progenitor star was not massive but did pass through third dredge-up. The category of central star has excited a very high degree of ionization in the nebula.[7] The shape of the nebula appears somewhat elongated, which may indicate an interaction with the surrounding interstellar matter. The nebula halo may be a recombination of two separate halos, which could indicate a peculiar mass-loss history.[10]
Referencesedit
^ abBrown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
^ abStanghellini, Letizia; et al. (December 10, 2008). "The Magellanic Cloud Calibration of the Galactic Planetary Nebula Distance Scale". The Astrophysical Journal. 689 (1): 194–202. arXiv:0807.1129. Bibcode:2008ApJ...689..194S. doi:10.1086/592395. S2CID 119257242.
^ abO'Meara, Stephen James (2016). Deep-Sky Companions: The Caldwell Objects. Cambridge University Press. p. 415. ISBN9781107083974.
^"SEDS Online NGC Catalogue". Results for NGC 2867. Retrieved 2010-12-07.
^ abcKeller, Graziela R.; et al. (August 2014). "UV spectral analysis of very hot H-deficient [WCE]-type central stars of planetary nebulae: NGC 2867, NGC 5189, NGC 6905, Pb 6 and Sand 3". Monthly Notices of the Royal Astronomical Society. 442 (2): 1379–1395. arXiv:1405.6763. Bibcode:2014MNRAS.442.1379K. doi:10.1093/mnras/stu878.
^ abPeña, M.; Stasińska, G. (July 2001). Aguilar, A.; Carramiñana, A. (eds.). Planetary Nebulae with [WR] nuclei. IX Latin American Regional IAU Meeting, "Focal Points in Latin American Astronomy", held in Tonantzintla, Mexico, Nov 9-13, 1998. Revista Mexicana de Astronomía y Astrofísica, Serie de Conferencias. p. 61. Bibcode:2001RMxAC..11...61P.
^Sinnott, Roger W.; Perryman, Michael A. C. (1997). Millennium Star Atlas. Vol. 2. Sky Publishing Corporation and the European Space Agency. p. 994. ISBN0-933346-83-2.
^Werner, K.; et al. (June 1992). "A spectacular mass-loss event of the central star of Longmore 4". Astronomy and Astrophysics. 259: L69–L72. Bibcode:1992A&A...259L..69W.
^Corradi, R. L. M. (2003). Kwok, Sun; Dopita, Michael; Sutherland, Ralph (eds.). Observations of Planetary Nebulae Haloes. Planetary Nebulae: Their Evolution and Role in the Universe, Proceedings of the 209th Symposium of the International Astronomical Union held at Canberra, Australia, 19-23 November, 2001. Astronomical Society of the Pacific. p. 447. Bibcode:2003IAUS..209..447C.
External linksedit
Media related to NGC 2867 at Wikimedia Commons
– Hubble picture and information on NGC 2867
NGC 2867 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
April 11, 2024
2867, also, known, caldwell, elliptical, type, planetary, nebula, southern, constellation, carina, just, over, degree, star, iota, carinae, discovered, john, herschel, april, 1834, herschel, initially, thought, might, have, found, planet, following, night, che. NGC 2867 also known as Caldwell 90 is an elliptical 5 Type II 7 planetary nebula in the southern constellation of Carina just over a degree to the NNW of the star Iota Carinae 8 It was discovered by John Herschel on April 1 1834 Herschel initially thought he might have found a new planet but on the following night he checked again and discovered it had not moved 3 The nebula is located at a distance of 7 270 light years from the Sun 2 NGC 2867Emission nebulaPlanetary nebulaHubble Space Telescope HST image of NGC 2867Credit HST NASA ESAObservation data J2000 epochRight ascension09h 21m 25 38336s 1 Declination 58 18 40 6167 1 Distance7 270 ly 2 228 pc 2 lyApparent magnitude V 9 7 3 Apparent dimensions V 12 4 43 3 35 6 5 ConstellationCarinaDesignationsESO 126 8 PN G278 1 05 9 6 Caldwell 90See also Lists of nebulaeThe central star of the nebula is of spectral type WC3 9 and is in the process of evolving into a white dwarf having previously shed the atmosphere that created the surrounding nebula It is now a hydrogen deficient GW Vir variable that is undergoing non radial pulsations with an amplitude of less than 0 3 in magnitude The star has an estimated temperature of 165 18 20 kK with 5 of the radius of the Sun and is radiating 1 400 times the Sun s luminosity 5 The surrounding nebula is fairly typical but does shows carbon enrichment which suggests the progenitor star was not massive but did pass through third dredge up The category of central star has excited a very high degree of ionization in the nebula 7 The shape of the nebula appears somewhat elongated which may indicate an interaction with the surrounding interstellar matter The nebula halo may be a recombination of two separate halos which could indicate a peculiar mass loss history 10 References edit a b Brown A G A et al Gaia collaboration August 2018 Gaia Data Release 2 Summary of the contents and survey properties Astronomy amp Astrophysics 616 A1 arXiv 1804 09365 Bibcode 2018A amp A 616A 1G doi 10 1051 0004 6361 201833051 Gaia DR2 record for this source at VizieR a b Stanghellini Letizia et al December 10 2008 The Magellanic Cloud Calibration of the Galactic Planetary Nebula Distance Scale The Astrophysical Journal 689 1 194 202 arXiv 0807 1129 Bibcode 2008ApJ 689 194S doi 10 1086 592395 S2CID 119257242 a b O Meara Stephen James 2016 Deep Sky Companions The Caldwell Objects Cambridge University Press p 415 ISBN 9781107083974 SEDS Online NGC Catalogue Results for NGC 2867 Retrieved 2010 12 07 a b c Keller Graziela R et al August 2014 UV spectral analysis of very hot H deficient WCE type central stars of planetary nebulae NGC 2867 NGC 5189 NGC 6905 Pb 6 and Sand 3 Monthly Notices of the Royal Astronomical Society 442 2 1379 1395 arXiv 1405 6763 Bibcode 2014MNRAS 442 1379K doi 10 1093 mnras stu878 NGC 2867 SIMBAD Centre de donnees astronomiques de Strasbourg Retrieved 2020 09 11 a b Pena M Stasinska G July 2001 Aguilar A Carraminana A eds Planetary Nebulae with WR nuclei IX Latin American Regional IAU Meeting Focal Points in Latin American Astronomy held in Tonantzintla Mexico Nov 9 13 1998 Revista Mexicana de Astronomia y Astrofisica Serie de Conferencias p 61 Bibcode 2001RMxAC 11 61P Sinnott Roger W Perryman Michael A C 1997 Millennium Star Atlas Vol 2 Sky Publishing Corporation and the European Space Agency p 994 ISBN 0 933346 83 2 Werner K et al June 1992 A spectacular mass loss event of the central star of Longmore 4 Astronomy and Astrophysics 259 L69 L72 Bibcode 1992A amp A 259L 69W Corradi R L M 2003 Kwok Sun Dopita Michael Sutherland Ralph eds Observations of Planetary Nebulae Haloes Planetary Nebulae Their Evolution and Role in the Universe Proceedings of the 209th Symposium of the International Astronomical Union held at Canberra Australia 19 23 November 2001 Astronomical Society of the Pacific p 447 Bibcode 2003IAUS 209 447C External links edit nbsp Media related to NGC 2867 at Wikimedia Commons The Hubble European Space Agency Information Centre Hubble picture and information on NGC 2867 NGC 2867 on WikiSky DSS2 SDSS GALEX IRAS Hydrogen a X Ray Astrophoto Sky Map Articles and images Retrieved from https en wikipedia org w index php title NGC 2867 amp oldid 1152032713, wikipedia, wiki, book, books, library,
