Kinematic Distances of Galactic Planetary Nebulae
Abstract
We construct H I absorption spectra for 18 planetary nebulae (PNs) and their background sources using data from the International Galactic Plane Survey. We estimate the kinematic distances of these PNs, among which 15 objects’ kinematic distances are obtained for the first time. The distance uncertainties of 13 PNs range from 10% to 50%, which is a significant improvement with uncertainties of a factor of two or three smaller than most previous distance measurements. We confirm that PN G030.2-00.1 is not a PN because of its large distance found here.
- Publication:
-
The Astrophysical Journal Supplement Series
- Pub Date:
- March 2016
- DOI:
- 10.3847/0067-0049/223/1/6
- arXiv:
- arXiv:1601.03269
- Bibcode:
- 2016ApJS..223....6Y
- Keywords:
-
- ISM: clouds;
- ISM: kinematics and dynamics;
- planetary nebulae: general;
- stars: distances;
- Astrophysics - Astrophysics of Galaxies;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 21pages, 21figures, will be published in March/April 2016 by ApJS