Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/33016
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lew, Ben W. P. | en_US |
dc.contributor.author | Apai, Dániel | en_US |
dc.contributor.author | Zhou, Yifan | en_US |
dc.contributor.author | Radigan, Jacqueline | en_US |
dc.contributor.author | Marley, Mark | en_US |
dc.contributor.author | Schneider, Glenn | en_US |
dc.contributor.author | Cowan, Nicolas B. | en_US |
dc.contributor.author | Miles-Páez, Paulo A. | en_US |
dc.contributor.author | Manjavacas, Elena | en_US |
dc.contributor.author | Karalidi, Theodora | en_US |
dc.contributor.author | BEDIN, Luigi | en_US |
dc.contributor.author | Lowrance, Patrick J. | en_US |
dc.contributor.author | Burgasser, Adam J. | en_US |
dc.date.accessioned | 2023-01-23T16:46:02Z | - |
dc.date.available | 2023-01-23T16:46:02Z | - |
dc.date.issued | 2020 | en_US |
dc.identifier.issn | 0004-6256 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/33016 | - |
dc.description.abstract | Among the greatest challenges in understanding ultracool brown dwarf and exoplanet atmospheres is the evolution of cloud structure as a function of temperature and gravity. In this study, we present the rotational modulations of GU Psc b—a rare mid-T spectral type planetary-mass companion at the end of the L/T spectral type transition. Based on the Hubble Space Telescope/WFC3 1.1-1.67 μm time-series spectra, we observe a quasi-sinusoidal light curve with a peak-to-trough flux variation of 2.7% and a minimum period of 8 h. The rotation-modulated spectral variations are weakly wavelength-dependent, or largely gray between 1.1 and 1.67 μm. The gray modulations indicate that heterogeneous clouds are present in the photosphere of this low-gravity mid-T dwarf. We place the color and brightness variations of GU Psc b in the context of rotational modulations reported for mid-L to late-T dwarfs. Based on these observations, we report a tentative trend: mid-to-late T dwarfs become slightly redder in J - H color with increasing J-band brightness, while L dwarfs become slightly bluer with increasing brightness. If this trend is verified with more T-dwarf samples, it suggests that in addition to the mostly gray modulations, there is a second-order spectral-type dependence on the nature of rotational modulations. | en_US |
dc.language.iso | eng | en_US |
dc.title | Cloud Atlas: Weak Color Modulations Due to Rotation in the Planetary-mass Companion GU Psc b and 11 Other Brown Dwarfs | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/1538-3881/ab5f59 | en_US |
dc.identifier.scopus | 2-s2.0-85085116303 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/1538-3881/ab5f59 | en_US |
dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/85085116303 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 159 | en_US |
dc.relation.issue | 3 | en_US |
dc.relation.firstpage | 125 | en_US |
dc.type.referee | REF_1 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | THE ASTRONOMICAL JOURNAL | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2020AJ....159..125L | en_US |
dc.description.apc | sì | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Padova | - |
crisitem.author.orcid | 0000-0003-4080-6466 | - |
crisitem.journal.journalissn | 0004-6256 | - |
crisitem.journal.ance | E016224 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Lew_2020_AJ_159_125.pdf | Pdf editoriale | 4.74 MB | Adobe PDF | View/Open |
Page view(s)
105
checked on May 3, 2024
Download(s)
8
checked on May 3, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.