SCYON Abstract

Received on May 14 2007

Broad Band Optical Polarimetric Study of IC 1805

AuthorsBiman J. Medhi (1), G. Maheswar (1), K. Brijesh (1), J.C. Pandey (2),T.S. Kumar (1), and Ram Sagar (1)
Affiliation(1) Aryabhatta Research Institute of Observational Sciences, Manora Peak, Nainital - 263 129, India
(2) Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai - 400 005 , India
Accepted byMonthly Notices of the Royal Astronomical Society
Contactbiman@aries.ernet.in
URLhttp://adsabs.harvard.edu/abs/2007astro.ph..3580M
Links IC 1805

Abstract

We present the BVR broad band polarimetric observations of 51 stars belonging to the young open cluster IC 1805. Along with the photometric data from the literature we have modeled and subtracted the foreground dust contribution from the maximum polarization P(max) and colour excess E(B-V). The mean value of the P(max) for intracluster medium and the foreground are found to be 5.008 +/- 0.005 % and 4.865 +/- 0.022 % respectively. Moreover, the mean value of the wavelength of maximum polarization lambda(max) for intracluster medium is 0.541 +/- 0.003 µm, which is quite similar as the general interstellar medium (ISM). The resulting intracluster dust component is found to have negligible polarization efficiency as compared to interstellar dust. Some of the observed stars in IC 1805 have shown the indication of intrinsic polarization in their measurements.