August 2023 – My WordPress Site

The main plot shows the estimated WASP-69 spectrum (black line), which was established from Swift observations and scaling HD 85512’s spectrum (grey line) to solar X-ray/UV flux ratios. Each bandpass-of-interest is shown with background shading. The inset shows the TIMED/SEE data from Solar Cycle 24 from the Fx and Feuv,2 bands along with the best-fit power-law. -- astro-ph.EP

Astrogeology, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, SETI & Technosignatures

Fully Fluorinated Non-carbon Compounds NF3 And SF6 As Ideal Technosignature Gases

by Keith CowingAugust 31, 2023August 30, 2023

Waste gas products from technological civilizations may accumulate in an exoplanet atmosphere to detectable levels. We propose nitrogen trifluoride (NF3) and sulfur hexafluoride (SF6) as ideal technosignature gases.

EANA 2024

Astrogeology, Biogeochemical Cycles & Geobiology, Caves, Craters, Mountains & Lava Tubes, Exoplanets, -moons, -comets, Io

Lava Planets Interior Dynamics Govern The Long-term Evolution Of Their Magma Oceans

by Keith CowingAugust 31, 2023August 30, 2023

Astrogeology, Callisto, Icy Worlds, Imaging & Spectroscopy

Thermal Properties Of The Leading Hemisphere Of Callisto Inferred From ALMA Observations

by Keith CowingAugust 31, 2023August 30, 2023

Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy

An Adaptive Optics Upgrade For The Automated Planet Finder Telescope Using An Adaptive Secondary Mirror

by Keith CowingAugust 31, 2023August 30, 2023

Moment 0 maps of the CH3OH (183,15−182,16, A, Eu=447 K), CH2DOH (42,2−41,3, e0, Eu/=38 K), CHD2OH (41,2−40,1, o1-e0, Eu=32 K), and CH3OD (51−40, E, Eu=49 K) emission. The integrated velocity range is from -0.2 km−1 to 14.5 km s−1 . The systemic velocity is 8.34 km s−1 (Yen et al. 2015). Contour levels are every 3σ from 3σ, where σ is 1.5 mJy beam−1 , 3.0 mJy beam−1 , 3.0 mJy beam−1 , and 2.0 mJy beam−1 , respectively. The spectra are obtained within each rectangle area (0. ′′03×0. ′′05) to calculate the temperature and the column density. The numbers represent the offsets from the continuum peak (0. ′′0). The white cross mark show the continuum peak position (α2000, δ2000) = (19h 37m00s .90, +7◦ 34′ 09.”49). The red ellipse in each map represents the beam size. The red and blue arrows in the panel (a) show the directions of the red- and blue-shifted outflow. -- astro-ph.GA

Astronomy & Telescopes, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy

ATMOSPHERIX: II- Characterising Exoplanet Atmospheres Through Transmission Spectroscopy With SPIRou

by Keith CowingAugust 31, 2023September 18, 2025

Enterprise NX-01 in orbit around Vulcan #408 "Awakening" - Paramount

Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy

ATMOSPHERIX: I- An open source high resolution transmission spectroscopy pipeline for exoplanets atmospheres with SPIRou

by Keith CowingAugust 31, 2023August 30, 2023

Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy

Is There an Earth-like Planet in the Distant Kuiper Belt?

by Keith CowingAugust 30, 2023August 30, 2023

Astrochemistry, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy

CO, H2O, And CH4 In The Dusty Atmosphere Of A ≤5 Myr-old Exoplanet

by Keith CowingAugust 30, 2023August 30, 2023

Astrogeology, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Europa, Icy Worlds, Imaging & Spectroscopy, Water/Hycean Worlds & Oceanography

The Spatial Distribution of the Unidentified 2.07 μm Absorption Feature on Europa and Implications for its Origin

by Keith CowingAugust 30, 2023August 30, 2023

Astrochemistry, Astronomy & Telescopes, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar

Identification Of The Simplest Sugar-like Molecule Glycolaldehyde Towards The Hot Molecular Core G358.93-0.03 MM1

by Keith CowingAugust 30, 2023August 30, 2023