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Stars with ISM Polarization Observed with HPOL. III

Weitenbeck A. J.

Acta Astronomica

2008

Vol. 58, No. 4

433--439

Polarization data are given for stars whose polarizations are mostly interstellar which were observed with the University of Wisconsin spectropolarimeter (HPOL) during 1995-2004.

ISM Polarization toward NGC 1502

Weitenbeck A., J., Halstead E. A., Carver A. J.

Acta Astronomica

2008

Vol. 58, No. 1

41--54

Visual polarimetry of field stars along the line of sight to the cluster NGC 1502 and several stars in the cluster itself have been obtained. Polarization varies from much less than 1% at a distance of 100-200 pc to over 6% for the cluster stars; the field direction is uniform to within about 10° from the nearest to the most distant stars. λmax for the most distant field stars is about 5000 Å, and for the cluster stars is about 4800 Å, implying that R significantly less than 3 for this region.

Stars with ISM Polarization Observed with HPOL. II

Weitenbeck A. J.

Acta Astronomica

2004

Vol. 54, No. 1

87--102

Polarization data are given for stars whose polarizations are mostly interstellar which were observed with the University of Wisconsin spectropolarimeter (HPOL) during 1995-2003. Several cases are found for which K in the Serkowski Law for ISM polarization is higher than allowed by published formulas.

Stars with ISM Polarization Observed with HPOL

Weitenbeck A. J.

Acta Astronomica

1999

Vol. 49, No. 1

59--71

Polarization data are given for stars whose polarizations are mostly interstellar which were observed for various programs with the University of Wisconsin spectropolarimeter (HPOL) during 1989-1994.