Polarization maps of the Vela C molecular cloud were obtained at 250, 350, and 500um during the 2012 flight of the balloon-borne telescope BLASTPol. These measurements are used in conjunction with 850um data from Planck to study the submillimeter spectrum of the polarization fraction for this cloud. The spectrum is relatively flat and does not exhibit a pronounced minimum at \lambda ~350um as suggested by previous measurements of other molecular clouds. The shape of the spectrum does not depend strongly on the radiative environment of the dust, as quantified by the column density or the dust temperature obtained from Herschel data. The polarization ratios observed in Vela C are consistent with a model of a porous clumpy molecular cloud being uniformly heated by the interstellar radiation field.
@article{arxiv.1512.06745,
title = {Submillimeter Polarization Spectrum in the Vela C Molecular Cloud},
author = {Natalie N. Gandilo and Peter A. R. Ade and Francesco E. Angilè and Peter Ashton and Steven J. Benton and Mark J. Devlin and Bradley Dober and Laura M. Fissel and Yasuo Fukui and Nicholas Galitzki and Jeffrey Klein and Andrei L. Korotkov and Zhi-Yun Li and Peter G. Martin and Tristan G. Matthews and Lorenzo Moncelsi and Fumitaka Nakamura and Calvin B. Netterfield and Giles Novak and Enzo Pascale and Frédérick Poidevin and Fabio P. Santos and Giorgio Savini and Douglas Scott and Jamil A. Shariff and Juan Diego Soler and Nicholas E. Thomas and Carole E. Tucker and Gregory S. Tucker and Derek Ward-Thompson},
journal= {arXiv preprint arXiv:1512.06745},
year = {2016}
}