| Emission nebula | |
|---|---|
| Planetary nebula | |
 | |
| Observation data: J2000 epoch | |
| Right ascension | 10h 09m 20.910s [1] |
| Declination | −80° 51′ 30.73″ [1] |
| Distance | 6,440 ly (1,975 pc) [2] ly |
| Apparent magnitude (V) | 11.6 [3] |
| Apparent dimensions (V) | 1.33 ′ [2] |
| Constellation | Chamaeleon |
| Designations | Caldwell 109, Hen 2-44, Sa2-57, PK 296-20.1, PN G296.6-20.0, ESO 19-2 [4] |
NGC 3195 (also known as Caldwell 109) is a planetary nebula located in the southern constellation of Chamaeleon. Discovered by Sir John Herschel in 1835, [3] this 11.6 apparent magnitude [3] planetary nebula is slightly oval in shape, with dimensions of 40×35 arc seconds, and can be seen visually in telescopic apertures of 10.5 centimetres (4.1 in) at low magnifications. [5]
Spectroscopy reveals that NGC 3195 is approaching Earth at 17 kilometres per second (11 mi/s), while the nebulosity is expanding at around 40 kilometres per second (25 mi/s). The central star is listed as >15.3V or 16.1B magnitude. An analysis of Gaia data suggests that the central star is a binary system. [6] Distance is estimated at 1.7 kpc.
References
- ^ a b Kerber, F.; et al. (September 2003). "Galactic Planetary Nebulae and their central stars. I. An accurate and homogeneous set of coordinates". Astronomy and Astrophysics. 408 (3): 1029–1035. Bibcode: 2003A&A...408.1029K. doi: 10.1051/0004-6361:20031046.
- ^ a b Stanghellini, L.; et al. (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 c Seligman, Courtney. "New General Catalogue objects: NGC 3150 - 3199". cseligman.com. Retrieved 27 September 2019.
- ^ "NGC 3195". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2007-04-17.
- ^ O'Meara, Stephen James (2014), Deep-Sky Companions: The Messier Objects, Deep-sky companions, Cambridge University Press, p. 499, ISBN 978-1107018372
- ^ Chornay, N.; Walton, N. A.; Jones, D.; Boffin, H. M. J.; Rejkuba, M.; Wesson, R. (2021). "Towards a more complete sample of binary central stars of planetary nebulae with Gaia". Astronomy & Astrophysics. 648: A95. arXiv: 2101.01800. Bibcode: 2021A&A...648A..95C. doi: 10.1051/0004-6361/202140288. S2CID 230770301.
External links
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Media related to
NGC 3195 at Wikimedia Commons - The Hubble European Space Agency Information Centre: pictures and information on NGC 3195
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