IR colours of MASH planetary nebulae

DOI

We have analysed the near-infrared (NIR) and far-infrared (FIR) colours of MASH I and MASH II (the Macquarie/AAO/Strasbourg surveys, Cat. ) planetary nebulae (PNe), using data deriving from the Two-Micron All-Sky Survey and Infrared Astronomical Satellite. We were able to identify ~5 per cent of the sources in the NIR, and a slightly larger fraction (~12 per cent) in the FIR. It is concluded that whilst the NIR colours of these nebulae are consistent with those of less evolved (and higher surface brightness) PNe, their FIR colours are markedly different. This disparity is likely to arise as a result of an evolution in dust temperatures, in their line emission characteristics, and in the relative contributions of the 8.6 and 11.3um polycyclic aromatic hydrocarbon emission features. A rump of~9 per cent of the detected sources have values log[F(25um)/F(60um)] which are lower than can be explained in terms of normal nebular evolution, however. If these are comparable in nature to the undetected PNe, then this would argue that ~1 in 10 of MASH I and II nebulae may represent galactic H ii regions, Stromgren spheres, symbiotic nebulae or other unrelated categories of source.

Cone search capability for table J/MNRAS/394/1875/table1 (IRAS photometry for MASH I and MASH II sources)

Cone search capability for table J/MNRAS/394/1875/table2 (2MASS photometry of MASH I and MASH II sources)

Identifier
DOI http://doi.org/10.26093/cds/vizier.73941875
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/MNRAS/394/1875
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/394/1875
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/394/1875
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/MNRAS/394/1875
Provenance
Creator Phillips J.P.; Zepeda-Garcia D.
Publisher CDS
Publication Year 2009
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Cosmology; Interstellar medium; Natural Sciences; Observational Astronomy; Physics