skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: AEOLUS: A MARKOV CHAIN MONTE CARLO CODE FOR MAPPING ULTRACOOL ATMOSPHERES. AN APPLICATION ON JUPITER AND BROWN DWARF HST LIGHT CURVES

Abstract

Deducing the cloud cover and its temporal evolution from the observed planetary spectra and phase curves can give us major insight into the atmospheric dynamics. In this paper, we present Aeolus, a Markov chain Monte Carlo code that maps the structure of brown dwarf and other ultracool atmospheres. We validated Aeolus on a set of unique Jupiter Hubble Space Telescope (HST) light curves. Aeolus accurately retrieves the properties of the major features of the Jovian atmosphere, such as the Great Red Spot and a major 5 μm hot spot. Aeolus is the first mapping code validated on actual observations of a giant planet over a full rotational period. For this study, we applied Aeolus to J- and H-band HST light curves of 2MASS J21392676+0220226 and 2MASS J0136565+093347. Aeolus retrieves three spots at the top of the atmosphere (per observational wavelength) of these two brown dwarfs, with a surface coverage of 21% ± 3% and 20.3% ± 1.5%, respectively. The Jupiter HST light curves will be publicly available via ADS/VIZIR.

Authors:
; ; ;  [1]
  1. Steward Observatory, Department of Astronomy, University of Arizona, 933 N. Cherry Avenue, Tucson, AZ 85721 (United States)
Publication Date:
OSTI Identifier:
22521890
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 814; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CLOUD COVER; DIAGRAMS; HOT SPOTS; JUPITER PLANET; MAPPING; MARKOV PROCESS; MONTE CARLO METHOD; PLANETARY ATMOSPHERES; SATELLITES; SPACE; STARS; TELESCOPES; VISIBLE RADIATION

Citation Formats

Karalidi, Theodora, Apai, Dániel, Schneider, Glenn, Hanson, Jake R., and Pasachoff, Jay M., E-mail: tkaralidi@email.arizona.edu. AEOLUS: A MARKOV CHAIN MONTE CARLO CODE FOR MAPPING ULTRACOOL ATMOSPHERES. AN APPLICATION ON JUPITER AND BROWN DWARF HST LIGHT CURVES. United States: N. p., 2015. Web. doi:10.1088/0004-637X/814/1/65.
Karalidi, Theodora, Apai, Dániel, Schneider, Glenn, Hanson, Jake R., & Pasachoff, Jay M., E-mail: tkaralidi@email.arizona.edu. AEOLUS: A MARKOV CHAIN MONTE CARLO CODE FOR MAPPING ULTRACOOL ATMOSPHERES. AN APPLICATION ON JUPITER AND BROWN DWARF HST LIGHT CURVES. United States. doi:10.1088/0004-637X/814/1/65.
Karalidi, Theodora, Apai, Dániel, Schneider, Glenn, Hanson, Jake R., and Pasachoff, Jay M., E-mail: tkaralidi@email.arizona.edu. Fri . "AEOLUS: A MARKOV CHAIN MONTE CARLO CODE FOR MAPPING ULTRACOOL ATMOSPHERES. AN APPLICATION ON JUPITER AND BROWN DWARF HST LIGHT CURVES". United States. doi:10.1088/0004-637X/814/1/65.
@article{osti_22521890,
title = {AEOLUS: A MARKOV CHAIN MONTE CARLO CODE FOR MAPPING ULTRACOOL ATMOSPHERES. AN APPLICATION ON JUPITER AND BROWN DWARF HST LIGHT CURVES},
author = {Karalidi, Theodora and Apai, Dániel and Schneider, Glenn and Hanson, Jake R. and Pasachoff, Jay M., E-mail: tkaralidi@email.arizona.edu},
abstractNote = {Deducing the cloud cover and its temporal evolution from the observed planetary spectra and phase curves can give us major insight into the atmospheric dynamics. In this paper, we present Aeolus, a Markov chain Monte Carlo code that maps the structure of brown dwarf and other ultracool atmospheres. We validated Aeolus on a set of unique Jupiter Hubble Space Telescope (HST) light curves. Aeolus accurately retrieves the properties of the major features of the Jovian atmosphere, such as the Great Red Spot and a major 5 μm hot spot. Aeolus is the first mapping code validated on actual observations of a giant planet over a full rotational period. For this study, we applied Aeolus to J- and H-band HST light curves of 2MASS J21392676+0220226 and 2MASS J0136565+093347. Aeolus retrieves three spots at the top of the atmosphere (per observational wavelength) of these two brown dwarfs, with a surface coverage of 21% ± 3% and 20.3% ± 1.5%, respectively. The Jupiter HST light curves will be publicly available via ADS/VIZIR.},
doi = {10.1088/0004-637X/814/1/65},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 1,
volume = 814,
place = {United States},
year = {2015},
month = {11}
}