Polarimetry toward the IRAS Vela Shell. I. The Catalog

Details Polarimetry toward the IRAS Vela Shell. I. The Catalog Polarimetry toward the IRAS Vela Shell. I. The Catalog

Aug 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002apjs..141..469p&link_type=abstract

The Astrophysical Journal Supplement Series, Volume 141, Issue 2, pp. 469-483.

Astronomy and Astrophysics

Astronomy

11

Catalogs, Ism: Clouds, Ism: Individual: Name: Gum Nebula, Ism: Individual: Name: Vela Shell, Ism: Magnetic Fields, Polarization, Stars: Individual: Henry Draper Number: Hd 62542

Scientific paper

We have obtained linear polarization measurements of stars along the western side of the IRAS Vela Shell toward HD 62542. From 16 CCD fields distributed along the ionization front (I-front) we have built a catalog of 856 objects with polarization signal-to-noise ratio larger than 10. We detect very significant levels of polarization and hence an appreciable magnetic field throughout the region. Composite polarization maps around the I-front are shown. In some regions the polarization vectors are parallel to the I-front, but a perpendicular trend is also evident along parts of the front. In addition, the polarization pattern seems to be affected by gas streaming inside the cloud.

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