Visible-Light High-Contrast Imaging and Polarimetry with SCExAO/VAMPIRES
| Autor: | Lucas, Miles, Norris, Barnaby, Guyon, Olivier, Bottom, Michael, Deo, Vincent, Vievard, Sébastian, Lozi, Julien, Ahn, Kyohoon, Ashcraft, Jaren, Currie, Thayne, Doelman, David, Kudo, Tomoyuki, Leboulleux, Lucie, Lilley, Lucinda, Millar-Blanchaer, Maxwell, Safonov, Boris, Tuthill, Peter, Uyama, Taichi, Walk, Aidan, Zhang, Manxuan |
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| Rok vydání: | 2024 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | We present significant upgrades to the VAMPIRES instrument, a visible-light (600 nm to 800 nm) high-contrast imaging polarimeter integrated within SCExAO on the Subaru telescope. Key enhancements include new qCMOS detectors, coronagraphs, polarization optics, and a multiband imaging mode, improving sensitivity, resolution, and efficiency. These upgrades position VAMPIRES as a powerful tool for studying sub-stellar companions, accreting protoplanets, circumstellar disks, stellar jets, stellar mass-loss shells, and solar system objects. The instrument achieves angular resolutions from 17 mas to 21 mas and Strehl ratios up to 60\%, with 5$\sigma$ contrast limits of $10^{\text{-}4}$ at 0.1'' to $10^{\text{-}6}$ beyond 0.5''. We demonstrate these capabilities through spectro-polarimetric coronagraphic imaging of the HD 169142 circumstellar disk, ADI+SDI imaging of the sub-stellar companion HD 1160B, narrowband H$\alpha$ imaging of the R Aqr emission nebula, and spectro-polarimetric imaging of Neptune. Comment: 36 pages, 33 figures, accepted to PASP |
| Databáze: | arXiv |
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