PN G291.4-00.3: A new type I planetary nebula

Details PN G291.4-00.3: A new type I planetary nebula PN G291.4-00.3: A new type I planetary nebula

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...377..241n&link_type=abstract

Astronomy and Astrophysics, v.377, p.241-250 (2001)

Astronomy and Astrophysics

Astrophysics

3

Ism: Individual Objects: Ngc 3603, Planetary Nebulae: General, Planetary Nebulae: Individual: Pn G291.4-00.3

Scientific paper

In the vicinity of the southern hemisphere giant H II region NGC 3603 we discovered a new planetary nebula: PN G291.4-00.3 located at RAJ2000.0 = 11h14m32.1s +/- 0.3s, DECJ2000.0 = -61deg00'02'' +/- 1''. Monochromatic images reveal a central ring-like structure accompanied by onsets of arc-like filaments which might outline a bipolar outflow. Analysis of the nebula spectrum shows that helium and nitrogen are enriched, while oxygen, sulphur and argon abundances seem to be solar. The central star must be hot (above 100 kK) and having a luminosity of more than 3000 Lsun. All evidence shows that PN G291.4-00.3 is a high-excitation, density bounded planetary nebula of the type I, coming from the high-mass end of the intermediate mass stars. Based on observations obtained at the European Southern Observatory, La Silla, Chile.

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