The Search for Milky Way Halo Planetary Nebulae

Details The Search for Milky Way Halo Planetary Nebulae The Search for Milky Way Halo Planetary Nebulae

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21545426g&link_type=abstract

American Astronomical Society, AAS Meeting #215, #454.26; Bulletin of the American Astronomical Society, Vol. 42, p.472

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In the Milky Way, there are very few planetary nebulae (PNe) known to be in the halo, less than a dozen. Studies of the Andromeda Galaxy have shown that there are more than 700 PNe in the thick disk alone.Extrapolating expectations of Andromeda to the Milky Way, we would expect to find several thousand PNe in the halo. We are attempting to use databases such as SDSS, whose survey concentrates outside the plane of the Milky Way, to identify new planetary nebulae candidates in the thick disk and halo. Our recent research shows that it is possible to refine the search using near-infrared colors from 2MASS. Combining 2MASS and SDSS were able to produce more viable candidates. We have observed halo PN candidates using a narrowband [OIII] filter and a Sloan g' filter at the 0.5m ARCSAT telescope at APO and the 0.75-m telescope at Manastash Ridge Observatory. We will present the results of our survey so far.

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