000002185 001__ 2185
000002185 005__ 20160706145357.0
000002185 0247_ $$2DOI$$a10.1051/0004-6361/201220492
000002185 037__ $$aASTROimport-342
000002185 100__ $$aWeidmann, W. A.
000002185 245__ $$aNear-infrared photometry of Galactic planetary nebulae with the VVV Survey
000002185 260__ $$c2013
000002185 520__ $$aContext. Planetary nebulae (PNe) are powerful tracers of evolved stellar populations. Among the 3000 known PNe in the Galaxy, about 600 are located within the 520 square-degree area covered by the VVV survey. The VVV photometric catalogue provides an important new dataset for the study of PNe, with high-resolution imaging in five near-infrared bands. Aims: There are various colour-colour diagrams that can be obtained from the VVV filters. We investigate the location of PNe in these diagrams and the separation from other types of objects. This includes the new Y-J vs. Z-Y diagram.  Methods: Aperture photometry of known PNe in the VVV area was retrieved from source catalogues. Care was taken to minimise any confusion with field stars. The colours of the PNe we are determined for (H-Ks), (J-H), (Z-Y), and (Y-J), and compared to stars and to other types of emission line objects. Cloudy photo-ionisation models were used to predict colours for typical PNe.  Results: We present near-infrared photometry for 353 known PNe. The best separation from other objects is obtained in the (H-Ks) vs. (J-H) diagram. We calculated the emission-line contribution to the in-band flux based on a model for NGC 6720: we find that this is highest in the Z and Y bands at over 50%, lower in the J band at 40%, and lowest in the H and Ks bands at 20%. A new view of PNe in the wavelength domain of the Z and Y bands is shown. Photo-ionisation models are used to explore the observed colours in these bands. The Y band is shown to be dominated by He I 1.083 µm and He II 1.012 µm, and colours involving this band are very sensitive to the temperature of the ionizing star.  Conclusions: The VVV survey represents a unique dataset for studying crowded and obscured regions in the Galactic plane. The diagnostic diagrams presented here allow one to study the properties of known PNe and to uncover objects not previously classified. Tables 3-5 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/552/A74
000002185 700__ $$aGamen, R.
000002185 700__ $$avan Hoof, P. A. M.
000002185 700__ $$aZijlstra, A.
000002185 700__ $$aMinniti, D.
000002185 700__ $$aVolpe, M. G.
000002185 773__ $$cA74$$pAstronomy and Astrophysics$$v552$$y2013
000002185 85642 $$ahttp://esoads.eso.org/abs/2013A%26A...552A..74W
000002185 905__ $$apublished in
000002185 980__ $$aREFERD