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High Resolution Spectropolarimetry of the H-alpha Line: Obscured Stars and Absorptive Polarization
D. M. Harrington, J. R. Kuhn
The near-star environment around obscured stars is very dynamic. Many classes of stars show evidence for winds, disks, inflows and outflows with many phenomena occurring simultaneo…
Spectropolarimetric Observations of Herbig Ae/Be Stars. II. Comparison of Spectropolarimetric Surveys: HAeBe, Be and Other Emission-Line Stars
D. M. Harrington, J. R. Kuhn
The polarization of light across individual spectral lines contains information about the circumstellar environment on very small spatial scales. We have obtained a large number of…
A New Mechanism for Polarizing Light from Obscured Stars
J. R. Kuhn, S. V. Berdyugina, D. M. Fluri +2
Recent spectropolarimetric observations of Herbig AeBe stellar systems show linear polarization variability with wavelength and epoch near their obscured H-alpha emission. Surprisi…
First Direct Detection of Magnetic Fields in Starspots and Stellar Chromospheres
S. V. Berdyugina, D. M. Fluri, N. Afram +5
Here we report on the first detection of circular polarization in molecular lines formed in cool magnetic regions (starspots) and in chromospheric emission lines formed in hot plag…
Temporal Evolution of Coronagraphic Dynamic Range, and Constraints on Companions to Vega
Sasha Hinkley, Ben R. Oppenheimer, Remi Soummer +8
The major obstacle to the direct detection of companions to nearby stars is the overwhelming brightness of the host star. Current instruments employing the combination of adaptive…
Spectropolarimetry of the Deep Impact target comet 9P/Tempel 1 with HiVIS
D. M. Harrington, K. Meech, L. Kolokolova +2
High resolution spectropolarimetry of the Deep Impact target, comet 9P/ Tempel 1, was performed during the impact event on July 4th, 2005 with the HiVIS Spectropolarimeter and the…