NGC 5315
| Emission nebula | |
|---|---|
| Planetary nebula | |
 AHubble Space Telescope(HST) image of NGC 5315 | |
| Observation data:J2000epoch | |
| Right ascension | 13h53m56.96097s[1] |
| Declination | −66° 30′ 50.9155″[1] |
| Distance | ~6.5kly(2kpc).[2]ly |
| Apparent magnitude(V) | 9.8[3] |
| Constellation | Circinus |
| Designations | ESO 97-9, HD 120800,NGC5315, PN G309.1-04.3[4] |
NGC 5315is aplanetary nebulain the southernconstellationCircinus.Ofapparent magnitude9.8 around a central star of magnitude 14.2, it is located 5.2 degrees west-southwest ofAlpha Circini.It is only visible as a disc at magnifications over 200-fold.[5]The nebula was discovered by astronomerRalph Copelandin 1883.[3]The central star has astellar classof WC4 and is hydrogen deficient with aneffective temperatureof 76-79 kK.[6]The distance to this nebula is not known accurately, but is estimated to be around 6.5kilolight-years.[2]
This planetary nebular has a slightly elliptical form, a complex structure, and a ring that is somewhat broken. It shows a typical abundance of carbon and a slightly enhanced nitrogen abundance.[2]Radial velocitystudies indicate that the star may be a member of abinary system.The nebula does not show enrichment ofs-processelements. This suggests that the star'sasymptotic giant branchstage may have been truncated by interaction with the companion. Alternatively, the star may be low in mass and did not undergo thirddredge-up,or the star's s-process elements were heavily diluted by the envelope during the AGB phase.[6]
References[edit]
- ^abBrown, A. G. A.;et al. (Gaia collaboration) (August 2018)."GaiaData 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 sourceatVizieR.
- ^abcPottasch, S. R.; et al. (October 2002)."Abundances of Planetary Nebula NGC 5315".Astronomy and Astrophysics.393:285–294.Bibcode:2002A&A...393..285P.doi:10.1051/0004-6361:20020986.
- ^abFrommert, Hartmut."NGC Online Cross Identifications".spider.seds.org.Retrieved2018-10-27.
- ^"NGC 5315".SIMBAD.Centre de données astronomiques de Strasbourg.Retrieved2007-04-17.
- ^Bakich, Michael E. (2010).1001 Celestial Wonders to See Before You Die: The Best Sky Objects for Star Gazers.Patrick Moore's Practical Astronomy Series. Springer. p. 162.ISBN978-1-4419-1776-8.
- ^abMadonna, S.; et al. (October 2017)."Neutron-capture element abundances in the planetary nebula NGC 5315 from deep optical and near-infrared spectrophotometry".Monthly Notices of the Royal Astronomical Society.471(2): 1341–1369.arXiv:1706.07225.Bibcode:2017MNRAS.471.1341M.doi:10.1093/mnras/stx1585.
External links[edit]
Media related toNGC 5315at Wikimedia Commons- ESA Hubble site:Hubble picture and information on NGC 5315 (1997)(2007)
