high-resolution spectroscopy Archives

log R′HK(Teff) as a function of age for solar twins and solar analogs. Blue squares represent the six new seismic solar analogs listed in Table 1. Orange, dark-gray, and light-gray circles correspond to stellar samples from the literature, as indicated in the legend. The dashed line shows the empirical relation from Lorenzo-Oliveira et al. (2018). The green shaded region represents the 2σ uncertainty envelope around this relation. The Sun is represented by its red symbol. -- astro-ph.SR

Astronomy & Telescopes, Imaging & Spectroscopy, Space Weather & Heliophysics, Status Report, Stellar Cartography

Characterizing Six Seismic Solar Analogs Observed By Kepler, K2, And HERMES

by Keith CowingMay 3, 2026May 3, 2026

Solar analogs, stars that closely match the fundamental properties of the Sun, provide key benchmarks for testing stellar structure and evolution across different ages and activity levels.

Contour plots to approximate vshift for different offsets in ephemeris. The top three panels of the figure use fixed Kp values of 100 km s−1 , 150 km s−1 , and 200 km s−1 , while varying the period and ephemeris offset. The bottom three panels use fixed period values of 1 day, 2 days, and 5 days, while varying the Kp and ephemeris offset. -- astro-ph.EP

Astronomy & Telescopes, Exoplanets, -moons, -comets, Status Report

ExoGemS The Effect of Offsets from True Orbital Parameters on Exoplanet High-Resolution Transmission Spectra

by Keith CowingJuly 31, 2025July 31, 2025

High-resolution spectroscopy (HRS) plays a crucial role in characterizing exoplanet atmospheres, revealing detailed information about their chemical composition, temperatures, and dynamics.

Overview of the chemical elements detected in the transmission spectra of Ultra-Hot Jupiters (UHJ). Planets are ordered by decreasing equilibrium temperature. WASP-33 b is a more challenging target due to the presence of significant stellar pulsations. References: Borsa et al. (2021); Borsato et al. (2023); Hoeijmakers et al. (2018a, 2019, 2020, 2022); Yan & Henning (2018); Cauley et al. (2021); Yan et al. (2019); Prinoth et al. (2024); Prinoth et al. (2023); Stangret et al. (2020, 2022);Bello-Arufe et al. (2022, 2023); Azevedo Silva et al. (2022); Ben-Yami et al. (2020); Merritt et al. (2021); Maguire et al. (2023); Gandhi et al. (2023b); Jiang et al. (2023); Zhang et al. (2022); Casasayas-Barris et al. (2019); Fossati et al. (2023); Nugroho et al. (2020b); Ehrenreich et al. (2020); Tabernero et al. (2021); Deibert et al. (2021); Pelletier et al. (2023). -- astro-ph.EP

Astronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report

Exoplanet Atmospheres At High Spectral Resolution

by Keith CowingMay 15, 2025May 15, 2025

High-resolution spectroscopy (HRS) has grown into one of the main techniques to characterise the atmospheres of extrasolar planets. High spectral resolving power allows for the efficient removal of telluric and […]

Retrieved volume mixing ratios for H2O (top row) and OH (bottom row), performed with the high-resolution data only (left column), low-resolution data only (middle column), and combined datasets (right column). We show the constraints for the dissociation model in blue (for the deep atmosphere/undissociated abundance), and the H2O-dissociation model in red. We also show the median value and ±1𝜎 constraint for the cases where a species was detected, and 2𝜎 upper limits where no clear detection was obtained. The retrieved values and detection significances for each species are given in Table 2. -- astro-ph.E

Astrochemistry, Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report

Revealing H2O Dissociation In WASP-76~b Through Combined High- and Low-resolution Transmission Spectroscopy

by Keith CowingMay 6, 2024

Numerous chemical constraints have been possible for exoplanetary atmospheres thanks to high-resolution spectroscopy (HRS) from ground-based facilities as well as low-resolution spectroscopy (LRS) from space.

Astronomy & Telescopes, Atmospheres, Climate, Weather, Brown Dwarfs, Exoplanets, -moons, -comets, Gas Giants, Imaging & Spectroscopy, Press Release

Fresh View Of The Hot Brown Dwarf HD 984 B Through High-resolution Spectroscopy

by Keith CowingApril 20, 2024

Context. High-resolution spectroscopy has the potential to drive a better understanding of the atmospheric composition, physics, and dynamics of young exoplanets and brown dwarfs, bringing clear insights into the formation […]

SETI & Technosignatures, Status Report

The Breakthrough Listen Search for Intelligent Life: A Laser Search Pipeline for the Automated Planet Finder

by Keith CowingJanuary 17, 2023January 17, 2023

The Search for Extraterrestrial Intelligence (SETI) has traditionally been conducted at radio wavelengths, but optical searches are well-motivated and increasingly feasible due to the growing availability of high-resolution spectroscopy.

high-resolution spectroscopy

Characterizing Six Seismic Solar Analogs Observed By Kepler, K2, And HERMES

ExoGemS The Effect of Offsets from True Orbital Parameters on Exoplanet High-Resolution Transmission Spectra

Exoplanet Atmospheres At High Spectral Resolution

Revealing H2O Dissociation In WASP-76~b Through Combined High- and Low-resolution Transmission Spectroscopy

Fresh View Of The Hot Brown Dwarf HD 984 B Through High-resolution Spectroscopy

The Breakthrough Listen Search for Intelligent Life: A Laser Search Pipeline for the Automated Planet Finder

Sugar Erythrulose Discovered In Interstellar Space

Sample Return: Minimizing Decompression And Warming During Deep Seawater Collection Increases Abundance And Activity Of Autochthonous Bacteria And Archaea

Sample Return From Earth’s Deep Biosphere

NASA Spaceline Current Awareness List #1,207 10 July 2026 (Space Life Science Research Results)

The Sun’s Chemical Peculiarity: Disentangling Galactic Chemical Evolution And Planetary Engulfment In Solar Twins