J/ApJ/814/65 Jupiter HST light curves (Karalidi+, 2015)
Aeolus: a Markov chain Monte Carlo code for mapping ultracool atmospheres.
An application on Jupiter and brown dwarf HST light curves.
Karalidi T., Apai D., Schneider G., Hanson J.R., Pasachoff J.M.
<Astrophys. J., 814, 65 (2015)>
=2015ApJ...814...65K 2015ApJ...814...65K (SIMBAD/NED BibCode)
ADC_Keywords: Planets ; Photometry
Keywords: methods: statistical - planets and satellites: individual: Jupiter -
stars: individual: 2MASS J21392676+0220226 - techniques: photometric
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 5µm 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.
Description:
We present a unique dataset to validate mapping methods/tools of
ultracool atmospheres. Time resolved, full disk, photometric UVIS
imaging observations of Jupiter, spanning 21.5 hours, were obtained on
UTC 19-20 September 2012 with the HST WFC3 in HST GO program 13067
(PI: G. Schneider). We present the F275W, U-band and F763M, R-band
disk-integrated light curves of Jupiter, normalized to the median
counts. Additionally, we present spatially resolved images of Jupiter
at different phases/times across the light curves. These images can be
used as "ground truth" maps for the validation of mapping
methods/tools.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
jupiterr.dat 68 51 Jupiter disk-integrated F763M R-band light curve
jupiteru.dat 68 51 Jupiter disk-integrated F275W U-band light curve
fits/* . 21 Individual fits images
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Byte-by-byte Description of file (#): jupiterr.dat jupiteru.dat
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Bytes Format Units Label Explanations
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2- 16 F15.13 --- NFlux Normalized flux
19- 25 F7.5 --- e_NFlux rms uncertainty on NFlux
29- 43 F15.13 --- Phase Phase (=time/rotational period)
54 A1 --- Fits [Y/N] Fits Image Provided (Y/N)
56- 68 A13 --- FileName Name of the fits image in subdirectory fits
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Acknowledgements:
Theodora Karalidi, tkaralidi(at)email.arizona.edu
(End) Patricia Vannier [CDS] 12-Jan-2016