Publications by Steven P Bos

Publications by authors named "Steven P Bos"

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Detection of polarization neutral points in observations of the combined corona and sky during the 21 August 2017 total solar eclipse.

Frans Snik Steven P Bos Stefanie A Brackenhoff David S Doelman Emiel H Por

Appl Opt

July 2020

We report the results of polarimetric observations of the total solar eclipse of 21 August 2017 from Rexburg, Idaho (USA). We use three synchronized DSLR cameras with polarization filters oriented at 0°, 60°, and 120° to provide high-dynamic-range RGB polarization images of the corona and surrounding sky. We measure tangential coronal polarization and vertical sky polarization, both as expected.

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Imaging the water snow-line during a protostellar outburst.

Lucas A Cieza Simon Casassus John Tobin Steven P Bos Jonathan P Williams

Nature

July 2016

A snow-line is the region of a protoplanetary disk at which a major volatile, such as water or carbon monoxide, reaches its condensation temperature. Snow-lines play a crucial role in disk evolution by promoting the rapid growth of ice-covered grains. Signatures of the carbon monoxide snow-line (at temperatures of around 20 kelvin) have recently been imaged in the disks surrounding the pre-main-sequence stars TW Hydra and HD163296 (refs 3, 10), at distances of about 30 astronomical units (au) from the star.

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