We present a proper motion survey of the Galactic plane, using Isaac Newton Telescope (INT) Photometric Hα Survey (IPHAS) data and Palomar Sky Survey (POSS)-I Schmidt plate data as a first epoch, that probes down to proper motions below 50 masyr-1. The IPHAS survey covers the northern plane (|b| < 5°) with CCD photometry in the r,i and Hα passbands. We examine roughly 1400 deg2 of the IPHAS survey area and draw up a catalogue containing 103058 objects with significant proper motions below 150 masyr-1 in the magnitude range 13.5 < r' < 19. Our survey sample contains large samples of white dwarfs and subdwarfs which can be identified using a reduced proper motion diagram. We also found several objects with IPHAS colours suggesting Hα emission and significant proper motions. One is the known cataclysmic variable GD552; two are known DB white dwarfs and five others are found to be non-DA (DB and DC) white dwarfs, which were included in the Hα emission line catalogue due to their lack of absorption in the Hα narrow band.
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- August 2009
- Astrophysics - Astrophysics of Galaxies;
- Astrophysics - Solar and Stellar Astrophysics
- 18 pages, 9 figures, MNRAS accepted, catalogue available at http://www.astro.ru.nl/~ndeacon/catalogues/