J/AJ/162/271 HST/Spitzer transit and eclipse spectroscopy WASP-74b (Fu+, 2021)
The Hubble PanCET program: transit and eclipse spectroscopy of the hot-Jupiter
WASP-74b.
Fu G., Deming D., May E., Stevenson K., Sing D.K., Lothringer J.D.,
Wakeford H.R., Nikolov N., Mikal-evans T., Bourrier V., Dos Santos L.A.,
Alam M.K., Henry G.W., Munoz A.G., Lopez-morales M.
<Astron. J., 162, 271-271 (2021)>
=2021AJ....162..271F 2021AJ....162..271F (SIMBAD/NED BibCode)
ADC_Keywords: Exoplanets; Spectra, infrared; Occultations
Keywords: Exoplanet atmospheres; Exoplanet atmospheric composition
Abstract:
Planets are like children with each one being unique and special. A
better understanding of their collective properties requires a deeper
understanding of each planet. Here we add the transit and eclipse
spectra of hot-Jupiter WASP-74b into the ever growing data set of
exoplanet atmosphere spectral library. With six transits and three
eclipses using the Hubble Space Telescope and Spitzer Space Telescope
(Spitzer), we present the most complete and precise atmospheric
spectra of WASP-74b. We found no evidence for TiO/VO nor
super-Rayleigh scattering reported in previous studies. The transit
shows a muted water feature with strong Rayleigh scattering extending
into the infrared. The eclipse shows a featureless blackbody-like
WFC3/G141 spectrum and a weak methane absorption feature in the
Spitzer 3.6µm band. Future James Webb Space Telescope follow-up
observations are needed to confirm these results.
Description:
We present an uniformly analyzed transmission and emission spectrum of
hot-Jupiter WASP-74b ranging from 0.3 to 4.5µm using multiple
instruments on the Hubble Space Telescope telescope (HST) and Spitzer
Space Telescope (Spitzer).
Objects:
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RA (2000) DE Designation(s) (Period)
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20 18 09.32 -01 04 32.6 WASP-74b = WASP-74b (P=2.1377445d)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table8.dat 28 65 WASP-74b transit spectrum
table9.dat 36 65 Transit spectrum LD coefficients
table10.dat 21 30 WASP-74b eclipse spectrum
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See also:
J/AJ/142/39 : Sample of 114 γ Doradus candidates (Henry+, 2011)
J/ApJ/727/125 : Two secondary eclipses of WASP-12b with Spitzer (Campo+, 2011)
J/ApJ/754/136 : Light curves of HD 149026b in 3.6-16um (Stevenson+, 2012)
J/A+A/573/A90 : STAGGER-grid of 3D stellar models. IV. (Magic+, 2015)
J/MNRAS/446/2428 : WASP-31b:HST/Spitzer transmission spectra (Sing+, 2015)
J/A+A/625/A136 : WASP-18b HST/WFC3 spectro. phase curves (Arcangeli+, 2019)
J/MNRAS/485/5168 : Light curves of WASP-74 (Mancini+, 2019)
J/A+A/642/A50 : WASP-74 grizs light curves (Luque+, 2020)
J/AJ/161/51 : HST spectral light curve of HAT-P-41 (Sheppard+, 2021)
Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
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1- 5 F5.3 um lambda [0.33/4.5] Wavelength midpoint
7- 12 F6.4 um bin [0.001/0.56] Bin width
14- 19 F6.4 --- RpRs [0.09/0.1] Ratio planetary/star radius
21- 28 F8.6 --- e_RpRs [0.0003/0.003] Uncertainty in Rp/Rs
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Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
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1- 5 F5.3 um lambda [0.33/4.5] Wavelength midpoint
7- 12 F6.4 --- C1 [0.27/0.95] Transit spectrum LD coefficient, C1
14- 20 F7.4 --- C2 [-0.84/0.57] Transit spectrum LD coefficient, C2
22- 28 F7.4 --- C3 [-0.07/0.82] Transit spectrum LD coefficient, C3
30- 36 F7.4 --- C4 [-0.39/0.03] Transit spectrum LD coefficient, C4
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Byte-by-byte Description of file: table10.dat
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Bytes Format Units Label Explanations
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1- 6 F6.4 um lambda [1.11/4.5] Wavelength midpoint
8- 13 F6.4 um bin [0.009/0.56] Bin width
15- 18 I4 ppm Depth [224/1820] Occultation Depth
20- 21 I2 ppm e_Depth [63/87] Uncertainty in Depth
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 07-Mar-2022