Fontanive, C; Bedin, L R; Bardalez Gagliuffi, D C (2021). The Y dwarf population with HST : unlocking the secrets of our coolest neighbours – I. Overview and first astrometric results. Monthly notices of the Royal Astronomical Society, 501(1), pp. 911-915. Oxford University Press 10.1093/mnras/staa3732
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In this paper, we present our project that aims at determining accurate distances and proper motions for the Y brown dwarf population using the Hubble Space Telescope. We validate the program with our first results, using a single new epoch of observations of the Y0pec dwarf WISE J163940.83−684738.6. These new data allowed us to refine its proper motion and improve the accuracy of its parallax by a factor of three compared to previous determinations, now constrained to ϖ = 211.11 ± 0.56 mas. This newly derived absolute parallax corresponds to a distance of 4.737 ± 0.013 pc, an exquisite and unprecedented precision for faint ultracool Y dwarfs.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
10 Strategic Research Centers > Center for Space and Habitability (CSH) 08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences 08 Faculty of Science > Physics Institute 08 Faculty of Science > Physics Institute > NCCR PlanetS |
UniBE Contributor: |
Fontanive, Clémence |
Subjects: |
500 Science > 520 Astronomy 500 Science > 530 Physics |
ISSN: |
0035-8711 |
Publisher: |
Oxford University Press |
Language: |
English |
Submitter: |
Danielle Zemp |
Date Deposited: |
05 May 2022 11:28 |
Last Modified: |
05 Dec 2022 16:19 |
Publisher DOI: |
10.1093/mnras/staa3732 |
BORIS DOI: |
10.48350/169725 |
URI: |
https://boris.unibe.ch/id/eprint/169725 |
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