Broad Band Optical Polarimetric Study of IC 1805

Details Broad Band Optical Polarimetric Study of IC 1805 Broad Band Optical Polarimetric Study of IC 1805

2007-03-22

arxiv.org/abs/astro-ph/0703580v1

Mon.Not.Roy.Astron.Soc.378:881-887,2007

Astronomy and Astrophysics

Astrophysics

8 pages, 7 figures, Accepted for publication in MNRAS

Scientific paper

10.1111/j.1365-2966.2007.11767.x

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 micro m, 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.

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