Summary: Mon. Not. R. Astron. Soc. 000, 000­000 (0000) Printed 16 June 2011 (MN LATEX style file v2.2)
New short period stellar pulsators at large Galactocentric
distances
Gavin Ramsay1
, Ralf Napiwotzki2
, Thomas Barclay1,3
, Pasi Hakala4
, Stephen Potter5
,
Mark Cropper3
1Armagh Observatory, College Hill, Armagh, BT61 9DG
2Centre for Astrophysics Research, STRI, University of Hertfordshire, Hatfield, AL10 9AB
3Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surrey, RH5 6NT
4Finnish Centre for Astronomy with ESO, University of Turku, V¨ais¨al ¨antie 20, FI-21500 PIIKKI ¨O, Finland
5South African Astronomical Observatory, P.O. Box 9, Observatory 7935, Cape Town, South Africa
Accepted 2011 June 16. Received 2011 June 15; in original form 2011 April 25
ABSTRACT
We report the discovery of 31 blue, short period, pulsators made using data taken
as part of the Rapid Temporal Survey (RATS). We find they have periods between
51­83 mins and full-amplitudes between 0.05­0.65 mag. Using the period-luminosity

Source: Armagh Observatory

Collections: Physics