Using the NVO to Measure the Distance to Planetary Nebulae from Interstellar Reddening

Details Using the NVO to Measure the Distance to Planetary Nebulae from Interstellar Reddening Using the NVO to Measure the Distance to Planetary Nebulae from Interstellar Reddening

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21348707l&link_type=abstract

American Astronomical Society, AAS Meeting #213, #487.07; Bulletin of the American Astronomical Society, Vol. 41, p.462

Astronomy and Astrophysics

Astronomy

Scientific paper

The distance to planetary nebulae near the plane of the Milky Way can be estimated from measured interstellar reddening if the average rates of reddening per unit distance along the lines of sight are known. The reddening-distance relationship in a line of sight can be determined by measuring reddening toward known stars in the field. In this way, we determine the reddening-distance relationship for stars that are in the same field as a planetary nebula, and use the relationship to estimate the distance to the planetary nebula whose reddening can be measured but whose intrinsic magnitude is unknown.
We use tools of the National Virtual Observatory in this project to build a compilation of stellar spectral type from a variety of catalogs in the field of view of the planetary nebula. Spectral type is matched with intrinsic colors and magnitudes and catalog photometry for each star in the field to calculate the reddening and distance. We demonstrate the great potential of VO tools for this method, with planetary nebula distances that compare well to previous results. The use of VO tools in this method will be especially powerful when the VO has access to results of future surveys like GAIA.
This research was done at the 2008 U.S. National Virtual Observatory Summer School held in Santa Fe, New Mexico on September 3-11, 2008 and sponsored by the National Science Foundation.

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