Synergies between space telescopes in the photometric characterization of the atmospheres of Hot Jupiters

Abstract

Previous generation of instruments have the opportunity to discover thousands of extra-solar planets and more will come with the current and future planet-search missions. In order to go one step further in the characterization of exoplanets, in this paper we describe a way to compare the photometric observation of Hot Jupiters done with space telescopes such as HST, CHEOPS, TESS, PLATO, and JWST and give the first-hand characterization on their atmospheres. We analyze a set of planetary systems hosting a Hot Jupiter for which an atmospheric template is available in the literature. For each system, we simulate the transit light curves observed by different instruments, convolving the incoming spectrum with the corresponding instrumental throughput. For each instrument, we thus measure the expected transit depth and estimate the associated uncertainty. Finally, we compare the transit depths as seen by the selected instruments and we quantify the effect of the planetary atmosphere on multi-band transit photometry. We also analyze a set of simulated scenarios with different stellar magnitudes, activity levels, transit durations and atmospheric templates to find the best cases for this kind of observational approach. We find in general that current and especially future space telescopes provide enough photometric precision to detect significant differences between the transit depths at different wavelengths. In particular, we find that the chromatic effect due to the atmosphere of the Hot Jupiters is maximized at later spectral types and that the effect of stellar activity is smaller than the measurement uncertainties.

arXiv comment14 pages, 17 figures, Published in MNRAS

References in corpus (21)

• Intrinsic Colors, Temperatures, and Bolometric Corrections of Pre-Main Sequence Stars
• The James Webb Space Telescope
• New evolutionary models for pre-main sequence and main sequence low-mass stars down to the hydrogen-burning limit
• Detection of Planetary Transits Across a Sun-like Star
• The PLATO 2.0 Mission
• A continuum from clear to cloudy hot-Jupiter exoplanets without primordial water depletion
• Transmission Spectra of Three-Dimensional Hot Jupiter Model Atmospheres
• Rotation and winds of exoplanet HD 189733 b measured with high-dispersion transmission spectroscopy
• Detection of H2O and evidence for TiO/VO in an ultra hot exoplanet atmosphere
• HAT-P-26b: A Neptune-Mass Exoplanet with a Well Constrained Heavy Element Abundance
• HST hot Jupiter Transmission Spectral Survey: A detection of Na and strong optical absorption in HAT-P-1b
• HST hot Jupiter transmission spectral survey: evidence for aerosols and lack of TiO in the atmosphere of WASP-12b
• HST hot-Jupiter transmission spectral survey: Haze in the atmosphere of WASP-6b
• Nightside Pollution of Exoplanet Transit Depths
• Broad-band spectrophotometry of the hot Jupiter HAT-P-12b from the near-UV to the near-IR
• The blue sky of GJ3470b: the atmosphere of a low-mass planet unveiled by ground-based photometry
• Signs of strong Na and K absorption in the transmission spectrum of WASP-103b
• Exoplanet Characterization by Multi-Observatory Transit Photometry with TESS and CHEOPS
• Large Binocular Telescope view of the atmosphere of GJ1214b
• Understanding Stellar Contamination in Exoplanet Transmission Spectra as an Essential Step in Small Planet Characterization
• TOSC: an algorithm for the tomography of spotted transit chords

Cited by in corpus (1)

• The PLATO field selection process. II. Characterization of LOPS2, the first long-pointing field