Infrared properties of planetary nebulae with [WR] central stars

Details Infrared properties of planetary nebulae with [WR] central stars Infrared properties of planetary nebulae with [WR] central stars

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...377.1007g&link_type=abstract

Astronomy and Astrophysics, v.377, p.1007-1015 (2001)

Astronomy and Astrophysics

Astrophysics

14

Planetary Nebulae: General, Stars: Agb And Post-Agb, Stars: Wolf-Rayet

Scientific paper

We have gathered from the literature near and mid infrared (photometric and spectroscopic) data for Galactic planetary nebulae, with special attention to planetary nebulae surrounding Wolf-Rayet type central stars ([WR] PN). These data have been analyzed to obtain insight into the dust-properties of [WR] PN and their evolutionary status. We have found that a sizeable fraction of [WR] PN seems to contain hot dust (1000-2000 K), probably located in the winds of the central stars. The mean dust temperature is shown to decrease with decreasing [WC] spectral type. This is in line with suggestions that the [WC] sequence is an evolutionary sequence from late to early types. [WR] PN in different diagrams, when compared to those of non-[WR] PN, suggest that [WR] PN form a homogeneous class of planetary nebulae. There is an unusually large proportion of [WR] PN showing PAH features in their spectra.

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