Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006rmxac..26..160h&link_type=abstract
XI IAU Regional Latin American Meeting of Astronomy (Eds. L. Infante & M. Rubio) Revista Mexicana de Astronomía y Astrofísica (S
Astronomy and Astrophysics
Astronomy
Scientific paper
We present preliminary results of CTIO 4-m MOSAIC 2 data in NGC 6822. At this time, in this galaxy there are about 17 Planetary Nebulae (PNe) reported. We obtained on-band off-band ([OII] 5007, H α ) data of the whole galaxy to search for more PNe. We measured [OIII] 5007 fluxes for the whole sample. We are studying if the PNe Luminosity Function (PNLF) can be used as distance indicator in this galaxy because there are some problems involved: few PNe and an apparent anomalous distribution in the PNLF (Leisy et al. 2005). And our first results are:
- At this time we confirmed only 13 PNe candidates from the 17 reported previously. - Our PNLF looks more like the standard PNLF than the previous one reported by Leisy et al. (2005).
The next step in this study will be to search more PNe in our data and complete the sample. In order to build a better PNLF. The spectroscopy with Gemini and Magallanes data are going to be clue to know if there are PNe or not. Finally we will get abundances of HII regions and PNe and then to find the chemical history of NGC 6822 with a chemical model.
Hernandez-Martinez Liliana
Peña Manuel
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