dc.contributor.author | Phillips, Caprice L. | |
dc.contributor.author | Faherty, Jacqueline K. | |
dc.contributor.author | Burningham, Ben | |
dc.contributor.author | Vos, Johanna M. | |
dc.contributor.author | Gonzales, Eileen | |
dc.contributor.author | Griffith, Emily J. | |
dc.contributor.author | Merchan, Sherelyn Alejandro | |
dc.contributor.author | Calamari, Emily | |
dc.contributor.author | Visscher, Channon | |
dc.contributor.author | Morley, Caroline V. | |
dc.contributor.author | Whiteford, Niall | |
dc.contributor.author | Gaarn, Josefine | |
dc.contributor.author | Ilyin, Ilya | |
dc.contributor.author | Strassmeier, Klaus | |
dc.date.accessioned | 2024-09-08T20:30:03Z | |
dc.date.available | 2024-09-08T20:30:03Z | |
dc.date.issued | 2024-09-05 | |
dc.identifier.citation | Phillips , C L , Faherty , J K , Burningham , B , Vos , J M , Gonzales , E , Griffith , E J , Merchan , S A , Calamari , E , Visscher , C , Morley , C V , Whiteford , N , Gaarn , J , Ilyin , I & Strassmeier , K 2024 , ' Retrieving Young Cloudy L-Dwarfs : A Nearby Planetary-Mass Companion BD+60 1417B and Its Isolated Red Twin W0047 ' , The Astrophysical Journal , vol. 972 , no. 2 , 172 . https://doi.org/10.3847/1538-4357/ad5d57 | |
dc.identifier.issn | 0004-637X | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/2407.01694v1 | |
dc.identifier.other | ORCID: /0000-0003-4600-5627/work/167438262 | |
dc.identifier.uri | http://hdl.handle.net/2299/28139 | |
dc.description | © 2024. The Author(s). Published by the American Astronomical Society. This work is licensed under the terms of the Creative Commons Attribution 4.0 licence: https://creativecommons.org/licenses/by/4.0/ | |
dc.description.abstract | We present an atmospheric retrieval analysis on a set of young, cloudy, red L-dwarfs -- CWISER J124332.12+600126.2 and WISEP J004701.06+680352.1 -- using the \textit{Brewster} retrieval framework. We also present the first elemental abundance measurements of the young K-dwarf (K0) host star, BD+60 1417 using high resolution~(R = 50,000) spectra taken with PEPSI/LBT. In the complex cloudy L-dwarf regime the emergence of condensate cloud species complicates retrieval analysis when only near-infrared data is available. We find that for both L dwarfs in this work, despite testing three different thermal profile parameterizations we are unable to constrain reliable abundance measurements and thus the C/O ratio. While we can not conclude what the abundances are, we can conclude that the data strongly favor a cloud model over a cloudless model. We note that the difficulty in retrieval constraints persists regardless of the signal to noise of the data examined (S/N $\sim$ 10 for CWISER J124332.12+600126.2 and~40 for WISEP J004701.06+680352.1). The results presented in this work provide valuable lessons about retrieving young, low-surface gravity, cloudy L-dwarfs. This work provides continued evidence of missing information in models and the crucial need for JWST to guide and inform retrieval analysis in this regime. | en |
dc.format.extent | 22 | |
dc.format.extent | 4118024 | |
dc.language.iso | eng | |
dc.relation.ispartof | The Astrophysical Journal | |
dc.subject | astro-ph.SR | |
dc.subject | astro-ph.EP | |
dc.title | Retrieving Young Cloudy L-Dwarfs : A Nearby Planetary-Mass Companion BD+60 1417B and Its Isolated Red Twin W0047 | en |
dc.contributor.institution | Department of Physics, Astronomy and Mathematics | |
dc.contributor.institution | School of Physics, Engineering & Computer Science | |
dc.contributor.institution | Centre for Astrophysics Research (CAR) | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.3847/1538-4357/ad5d57 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |