Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Exoplanet atmospheric variability"'
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 13 (2024)
Atmospheric retrievals are widely used to constrain exoplanet properties from observed spectra. We investigate how the common nonphysical retrieval assumptions of vertically constant molecule abundances and cloud-free atmospheres affect our character
Externí odkaz:
https://doaj.org/article/56a905c4a8ee469194f5cfdbf50d5666
Publikováno v:
The Astrophysical Journal, Vol 970, Iss 1, p 62 (2024)
Planetary-mass objects and brown dwarfs at the transition ( T _eff ∼ 1300 K) from relatively red L dwarfs to bluer mid-T dwarfs show enhanced spectrophotometric variability. Multiepoch observations support atmospheric planetary-scale (Kelvin or Ros
Externí odkaz:
https://doaj.org/article/3dda38f4d6004720a5103f408d0e9e1f
Autor:
W. Garrett Levine, Shreyas Vissapragada, Adina D. Feinstein, George W. King, Aleck Hernandez, Lía Corrales, Michael Greklek-McKeon, Heather A. Knutson
Publikováno v:
The Astronomical Journal, Vol 168, Iss 2, p 65 (2024)
Aeronomy, the study of Earth’s upper atmosphere and its interaction with the local space environment, has long traced changes in the thermospheres of Earth and other solar system planets to solar variability in the X-ray and extreme-ultraviolet (co
Externí odkaz:
https://doaj.org/article/1d574615dd3248689cb40a5e5fba837b
Autor:
Canis Li, Avi Shporer
Publikováno v:
The Astronomical Journal, Vol 167, Iss 5, p 245 (2024)
We perform a systematic search for atmospheric variability in short-period gas-giant planets (hot Jupiters) observed by the Kepler mission, by looking for temporal variability of their secondary eclipse depths. This is motivated by a recent detection
Externí odkaz:
https://doaj.org/article/0ccac30de0d0410bba3a9412cc33e193
Autor:
Allison M. McCarthy, Philip S. Muirhead, Patrick Tamburo, Johanna M. Vos, Caroline V. Morley, Jacqueline Faherty, Daniella C. Bardalez Gagliuffi, Eric Agol, Christopher Theissen
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 1, p 83 (2024)
Multiwavelength photometry of brown dwarfs and planetary-mass objects provides insight into their atmospheres and cloud layers. We present near-simultaneous J - and K _s -band multiwavelength observations of the highly variable T2.5 planetary-mass ob
Externí odkaz:
https://doaj.org/article/be1616559631486d84d38df85083e46b
Autor:
Michael Gully-Santiago, Caroline V. Morley, Jessica Luna, Morgan MacLeod, Antonija Oklopčić, Aishwarya Ganesh, Quang H. Tran, Zhoujian Zhang, Brendan P. Bowler, William D. Cochran, Daniel M. Krolikowski, Suvrath Mahadevan, Joe P. Ninan, Guđmundur Stefánsson, Andrew Vanderburg, Joseph A. Zalesky, Gregory R. Zeimann
Publikováno v:
The Astronomical Journal, Vol 167, Iss 4, p 142 (2024)
Atmospheric escape shapes the fate of exoplanets, with statistical evidence for transformative mass loss imprinted across the mass–radius–insolation distribution. Here, we present transit spectroscopy of the highly irradiated, low-gravity, inflat
Externí odkaz:
https://doaj.org/article/33715524ec2e4c0f98d1512d3433a26b
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 1, p 24 (2024)
In this study, we treat Earth as an exoplanet and investigate our home planet by means of a potential future mid-infrared space mission called the Large Interferometer For Exoplanets (LIFE). We combine thermal spectra from an empirical data set of di
Externí odkaz:
https://doaj.org/article/e725737cc29d46a69821644ac2286038
Autor:
Q. Changeat, J. W. Skinner, J. Y-K. Cho, J. Nättilä, I. P. Waldmann, A. F. Al-Refaie, A. Dyrek, B. Edwards, T. Mikal-Evans, M. Joshua, G. Morello, N. Skaf, A. Tsiaras, O. Venot, K. H. Yip
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 270, Iss 2, p 34 (2024)
We present a comprehensive analysis of the Hubble Space Telescope observations of the atmosphere of WASP-121 b, an ultra-hot Jupiter. After reducing the transit, eclipse, and phase-curve observations with a uniform methodology and addressing the bias
Externí odkaz:
https://doaj.org/article/aa2bbff7efdd48029a53c539d27e55ec
Publikováno v:
The Astrophysical Journal Letters, Vol 942, Iss 1, p L4 (2022)
Terrestrial exoplanets such as TRAPPIST-1e will be observed in a new capacity with the JWST/Near Infrared Spectrograph (NIRSpec), which is expected to be able to detect CO _2 , CH _4 , and O _2 signals, if present, with multiple coadded transit obser
Externí odkaz:
https://doaj.org/article/2730bdf116f148b0a0d359f15bb018f2
Publikováno v:
The Astrophysical Journal, Vol 959, Iss 1, p 41 (2023)
Hot Jupiter atmospheres may be subject to a thermoresistive instability where an increase in the electrical conductivity due to ohmic heating results in runaway of the atmospheric temperature. We introduce a simplified one-dimensional model of the eq
Externí odkaz:
https://doaj.org/article/e79194bc5f4b45248550e71826c5e9a7