Planetary nebula in the constellation Chamaeleon
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