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Global extinction: Gemini North and South GMOS combined photometry relative to the Gaia catalog, and long-term atmospheric change

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DOITrouver le DOI : https://doi.org/10.1088/1538-3873/acac52
AuteurRechercher : 1Identifiant ORCID : https://orcid.org/0000-0003-1259-0813
Affiliation
  1. Conseil national de recherches Canada. Herzberg en astronomie et en astrophysique
FormatTexte, Article
Sujetastronomical instrumentation; astronomical methods; astronomical site protection
Résumé
Effects of long-term atmospheric change were looked for in photometry employing Gemini North and South twin Multi-Object Spectrograph (GMOS-N and GMOS-S) archival data. The whole GMOS imaging database, beginning from 2003, was compared against the all-sky Gaia object catalog, yielding ∼10⁶ Sloan ᵣᵗ-filter samples, ending in 2021. These were combined with reported sky and meteorological conditions, and versus a simple model of the atmosphere plus cloud together with simulated throughputs. One exceptionally extincted episode in 2009 is seen, as is a trend (similar at both sites) of about 2 mmag worsening attenuation per decade. This is consistent with solar-radiance transmissivity records going back over six decades, aerosol density measurements, and more than 0.2°C/decade rise in air temperature, which has implications for the calibration of historic data sets or future surveys.
Date de publication
Maison d’éditionIOP
Licence
Dans
  • Publications of the Astronomical Society of the Pacific 134, nº 1042, 125003 (décembre 2022).
Langueanglais
Publications évaluées par des pairsOui
Exporter la noticeExporter en format RIS
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Identificateur de l’enregistrement65bb1a0f-6a10-4b01-ba14-86e0bfa9ffb5
Enregistrement créé2023-12-13
Enregistrement modifié2023-12-13

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