Results 121 to 130 of about 700,042 (263)

Using near infra-red spectroscopy for characterization of transiting exoplanets

, 2015
We propose a method for observing transiting exoplanets with near-infrared high-resolution spectrometers. We aim to create a robust data analysis method for recovering atmospheric transmission spectra from transiting exoplanets over a wide wavelength ...
Aronson, Erik, Piskunov, Nikolai, Waldén, Pierre   +2 more
core   +1 more source

Multifluid Equations for MHD

Journal of Geophysical Research: Space Physics, Volume 130, Issue 6, June 2025.
Abstract A set of magnetohydrodynamic equations is developed for multiple ion species in the limit of small Larmor radius. The derivation proceeds to explicitly calculate the Lorentz force resulting from the small ion drift velocities. The net effect is that in this limit all the ions move perpendicular to the magnetic field with the same E×B $\mathbf ...
J. G. Lyon, V. G. Merkin, K. A. Sorathia, M. J. Wiltberger   +3 more
wiley   +1 more source

A New Window into Escaping Exoplanet Atmospheres: 10830 Å Line of Helium [PDF]

, 2017
Observational evidence for escaping exoplanet atmospheres has been obtained for a few exoplanets to date. It comes from strong transit signals detected in the ultraviolet, most notably in the wings of the hydrogen Lyα (Lyα) line. However, the core of the
A. Oklopčić, C. Hirata
semanticscholar   +1 more source

Detecting isotopologues in exoplanet atmospheres using ground-based high-dispersion spectroscopy [PDF]

Astronomy & Astrophysics, 2018
Context. The cross-correlation technique is a well-tested method for exoplanet characterization, having lead to the detection of various molecules, to constraints on atmospheric temperature profiles, wind speeds, and planetary spin rates.
P. Mollière, I. Snellen
semanticscholar   +1 more source

Constraining the Thickness of TRAPPIST-1 b’s Atmosphere from Its JWST Secondary Eclipse Observation at 15 μm

The Astrophysical Journal Letters, 2023
Recently, the first JWST measurement of thermal emission from a rocky exoplanet was reported. The inferred dayside brightness temperature of TRAPPIST-1 b at 15 μ m is consistent with the planet having no atmosphere and therefore no mechanism by which to ...
Jegug Ih, Eliza M.-R. Kempton, Emily A. Whittaker, Madeline Lessard   +3 more
doaj   +1 more source

Long‐Lasting Volcanism of the Moon Aided by the Switch in Dominant Mechanisms of Magma Ascent: Role of Localized Radioactive Enrichment in a Numerical Model of Magmatism and Mantle Convection

Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.
Abstract Significant volcanic activity continued for billions of years since 3.5–4 Gyr ago in the Procellarum KREEP Terrane (PKT) of the Moon, but not so significant outside the PKT. To understand this volcanic history, we developed a 2‐D numerical model of magmatism and mantle convection; the effects of the PKT on lunar evolution are considered by ...
Ken'yo U, Masanori Kameyama, Gaku Nishiyama, Takehiro Miyagoshi, Masaki Ogawa   +4 more
wiley   +1 more source

The Thermal Emission Spectrum of the Nearby Rocky Exoplanet LTT 1445A b from JWST MIRI/LRS

The Astronomical Journal
The nearby transiting rocky exoplanet LTT 1445A b presents an ideal target for studying atmospheric retention in terrestrial planets orbiting M dwarfs.
Patcharapol Wachiraphan, Zachory K. Berta-Thompson, Hannah Diamond-Lowe, Jennifer G. Winters, Catriona Murray, Michael Zhang, Qiao Xue, Caroline V. Morley, Marialis Rosario-Franco, Girish M. Duvvuri   +9 more
doaj   +1 more source

On the Stability of Super-Earth Atmospheres

, 2012
We investigate the stability of super Earth atmospheres around M stars using a 7-parameter, analytical framework. We construct stability diagrams in the parameter space of exoplanetary radius versus semi-major axis and elucidate the regions in which the ...
Heng, Kevin, Kopparla, Pushkar
core   +1 more source

The role of boundary‐layer friction in modulating midlatitude heatwaves

Quarterly Journal of the Royal Meteorological Society, Volume 151, Issue 768, April 2025 Part A.
Boundary‐layer friction associated with different surface types plays an important role in modulating heatwaves in the midlatitudes. The main changes in heatwave features occur when locally modifying boundary‐layer friction along the jet‐stream axis. Real‐world differences in the occurrence of heatwaves between different locations in the midlatitudes ...
E. Russo, W. Wicker, D. Folini, D. I. V. Domeisen   +3 more
wiley   +1 more source

Exoplanet Atmosphere Measurements from Transmission Spectroscopy and other Planet-Star Combined Light Observations

, 2018
It is possible to learn a great deal about exoplanet atmospheres even when we cannot spatially resolve the planets from their host stars. In this chapter, we overview the basic techniques used to characterize transiting exoplanets - transmission ...
A Burrows, A Jordán, A Lecavelier Des Etangs, A Lecavelier Des Etangs, AP Showman, AP Showman, B Benneke, B Benneke, BO Demory, BO Demory, C Mordasini, CD Dressing, CM Huitson, CV Morley, CV Morley, CV Morley, CV Morley, D Angerhausen, D Charbonneau, D Deming, D Deming, D Deming, D Dragomir, D Ehrenreich, D Raghavan, DK Sing, DK Sing, DK Sing, DM Kipping, E Anders, E Miller-Ricci Kempton, E Rauscher, F Pont, G Morello, G Tinetti, GR Ricker, H Diamond-Lowe, H Schwarz, HA Knutson, HA Knutson, HA Knutson, HR Wakeford, HR Wakeford, IAG Snellen, IJM Crossfield, J Fraine, J Wit de, JA Dittmann, JA Kammer, JC Schwartz, JG Ingalls, JI Moses, JJ Fortney, JJ Fortney, JJ Fortney, JK Barstow, JL Bean, JL Bean, JL Birkby, JW Chapman, K Haynes, K Heng, KB Stevenson, KB Stevenson, KB Stevenson, KB Stevenson, KB Stevenson, KB Stevenson, KI Öberg, L Kreidberg, L Kreidberg, L Kreidberg, M Ali-Dib, M Brogi, M Gillon, M Oreshenko, MC Cushing, MR Line, MR Swain, N Espinoza, N Madhusudhan, N Madhusudhan, N Madhusudhan, N Madhusudhan, N Nikolov, NP Gibson, O Mousis, PR McCullough, PW Sullivan, RJ Kok de, RM Smith, RP Turco, S Seager, S Seager, TD Robinson, TD Robinson, TG Beatty, TM Evans, TP Greene, V Parmentier, Y Zhou   +100 more
core   +1 more source