HD 53143 is a mature Sun-like star and host to a broad disk of dusty debris, including a cold outer ring of planetesimals near 90 au. Unlike most other inclined debris disks imaged at visible wavelengths, the cold disk around HD 53143 appears as disconnected "arcs" of material, with no forward-scattering side detected to date. We present new,...
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2023 (v1)Journal articleUploaded on: March 3, 2024
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2022 (v1)Journal article
We present ALMA 1.3 mm observations of the HD 53143 debris disk-the first infrared or millimeter image produced of this ~1 Gyr old solar analog. Previous HST STIS coronagraphic imaging did not detect flux along the minor axis of the disk, which could suggest a face-on geometry with two clumps of dust. These ALMA observations reveal a disk with...
Uploaded on: December 4, 2022 -
May 10, 2014 (v1)Journal article
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June 22, 2014 (v1)Conference paper
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January 20, 2016 (v1)Journal article
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October 14, 2012 (v1)Conference paper
During the Venus transit in 2004 several observers collected data useful to the characterization of the mesosphere of the planet, by observing the solar light refracted at the corresponding altitude range. The "aureole" thus formed, is observable during the ingress and egress phases of the transit, when Venus is crossing the solar limb. For the...
Uploaded on: December 3, 2022