Speaker
Description
We present the preliminary results, accurate measurements
and long term monitoring,
of our on-going programme to
extend the list of well observed polarimetric standard stars.
Many of the current polarimetry standard star catalogues
have mainly
very bright (V< 9mag) stars which are not well observed
and sky coverage is very sparse
ESO presented a list of fainter standard stars, V=10-12mag,
however, only three of them are easily observable from the Northern hemisphere.
In order to improve this we have been conducting a programme to
establish standard stars with V=10.0-13.5 mag and declination > -13 deg.
Our data includes accurate, simultaneous, UBVRI measurements using
Turku UBVRI Photopolarimeter (Turpol), long term monitoring in B-band with
the Alhambra Faint Object Spectrograph and Camera, (ALFOSC), both instrumments
having been mounted at the Nordic Optical Telescope (NOT)
and multi epoch measurements in NIR through yzJHK-bands with
Long-slit Intermediate Resolution Infrared Spectrograph, LIRIS,
mounted at the William Herschel Telescope (WHT).
