The fundamental metallicity relation (FMR) – the three-way trend between galaxy stellar masses, star-formation rates (SFRs) and gaseous metallicities – remains amongst the most studied extragalactic relations.
heliophysics
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Space Weather & Heliophysics, Status Report, Stellar Cartography
Flare Frequency In M dwarfs Belonging To Young Moving Groups
Context. M stars are preferred targets for studying terrestrial exoplanets, for which we hope to obtain their atmosphere spectra in the next decade.
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Habitable Zones, Space Weather & Heliophysics, Status Report, Stellar Cartography
Comparing The Sun To Sun-like Stars. On The Importance Of Addressing Faculae/spot Domination
Whether the Sun is an ordinary G-type star is still an open scientific question.
Posted inAstronomy & Telescopes, Habitable Zones, Radiation, Space Weather & Heliophysics, Status Report, Stellar Cartography
Analyzing the Morphology of Late-phase Stellar Flares From G-, K-, and M-type Stars
Stellar flares occasionally present a peak-bump light curve morphology, consisting of an initial impulsive phase followed by a gradual late phase. Analyzing this specific morphology can uncover the underlying physics […]
Posted inAstronomy & Telescopes, Habitable Zones, Imaging & Spectroscopy, Space Weather & Heliophysics, Status Report, Stellar Cartography
A Homogeneous Catalog of Oscillating Solar-Type Stars Observed by the Kepler Mission and a New Amplitude Scaling Relation Including Chromospheric Activity
We present a homogeneous catalog of global asteroseismic parameters and derived stellar parameters for 765 Kepler main-sequence and subgiant stars.
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biophysics, Exoplanets, -moons, -comets, Habitable Zones, Radiation, Space Weather & Heliophysics, Status Report, Stellar Cartography
The Impact Of Stellar Flares On The Atmospheric Escape of Exoplanets Orbiting M stars I: Insights From The AU Mic System
The X-rays and Extreme Ultraviolet (XUV) emission from M stars can drive the atmospheric escape on planets orbiting them. M stars are also known for their frequent emission of stellar […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Space Weather & Heliophysics, Status Report, Stellar Cartography
Exploring Coronal Abundances Of M dwarfs At Moderate Activity Levels
Main sequence stars of spectral types F, G, and K with low to moderate activity levels exhibit a recognizable pattern known as the first ionization potential effect (FIP effect), where […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Proxima Centauri, Radiation, Space Weather & Heliophysics, Status Report, Stellar Cartography, TRAPPIST-1
Identifying Flare Locations Through Exoplanet Transit Occultations
M dwarfs are the most common stars in the galaxy, with long lifespans, a high occurrence rate of rocky planets, and close-in habitable zones.
Posted inAstrochemistry, Astronomy & Telescopes, Imaging & Spectroscopy, Interstellar, Status Report, Stellar Cartography
ALMA Observations of CO Isotopologues Towards Six Obscured post-AGB Stars
Low- and intermediate-mass stars evolve through the asymptotic giant branch (AGB), when an efficient mass-loss process removes a significant fraction of their initial mass.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Habitable Zones, Missions & Hardware, Press Release, Radiation, Space Weather & Heliophysics, TRAPPIST-1
Parker Solar Probe Has Touched The Outer Reaches Of A Star
Editor’s note: The Parker Solar Probe recently conducted a close fly-by of a star – our sun. This is the closest that any human object has ever gotten to any […]