September 2024 – Page 3 – My WordPress Site

Opacities as a function of wavelength for the opacity sources in the current study, computed at a temperature of 1000 K and a pressure of 0.01 bar. The opacities are weighted by their mass mixing ratios corresponding to the best-fit model from the non-isothermal + non-grey cloud retrieval on the NIRISS data. They are shown over the wavelength range covered by the three instruments in this study – NIRISS, WFC3 and STIS. -- astro-ph.EP

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

JWST/NIRISS and HST: Exploring The Improved Ability to Characterise Exoplanet Atmospheres In The JWST Era

by Keith CowingSeptember 26, 2024September 26, 2024

GaiaPMEX constraints on mass and sma of a candidate companion around β Pictoris. Same caption as Fig. 19. The yellow and pink dots show the properties of the known exoplanet companions b & c in this system, with smab=9.8±0.4 au and mb=10–11 MJ , and smac=2.7±0.02 au and Mc=7.8±0.4 MJ (Lagrange et al. 2020). -- astro-ph.SR

Astronomy & Telescopes, Exoplanets, -moons, -comets, Gaia Mission, Imaging & Spectroscopy, Missions & Hardware, Stellar Cartography

Searching For Substellar Companion Candidates With Gaia. I. Introducing The GaiaPMEX Tool

by Keith CowingSeptember 26, 2024November 16, 2024

This color image from NASA Voyager 2 was reconstructed by making a computer composite of three black and white images taken through red, green, and blue filters. Details on Triton surface unfold dramatically in this sequence of approach images. Larger image

Icy Worlds, Neptune, Triton, Water/Hycean Worlds & Oceanography

The Trans- And Post-Capture Orbital Evolution Of Triton

by Keith CowingSeptember 26, 2024September 26, 2024

Key elements in the magma temperature-cloud feedback that drives the oscillations in cloudiness and surface temperature. Changes in the color of the magma ocean surface indicate variations in surface temperature (brighter denotes higher temperature). Changes in the brightness of the clouds represent variations in the shortwave opacity of the cloud (brighter denotes higher optical depth). The thicknesses of downward yellow rays indicate shortwave radiation before and after being attenuated by the clouds. The thicknesses of the blue arrows in the upper-right direction indicate ascending vapor fluxes. -- astro-ph.EP

Astrogeology, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Lava / magma ocean / Volcanic Worlds

Extreme Weather Variability on Hot Rocky Exoplanet 55 Cancri e Explained by Magma Temperature-Cloud Feedback

by Keith CowingSeptember 26, 2024September 26, 2024

Protocell -- PubMed

Astrochemistry, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Origin & Evolution of Life

Protocell Effects on RNA Folding, Function, and Evolution

by Keith CowingSeptember 26, 2024September 26, 2024

Propynal -- Wikipedia

Astrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar

High Spectral Resolution Observations of Propynal (HCCCHO) towards TMC-1 from the GOTHAM Large Program on the Green Bank Telescope

by Keith CowingSeptember 26, 2024September 26, 2024

Upper and lower panels show comparisons of line width (FWHM) and velocity shifts from the systemic velocity (VLSR = 7.5 km s−1 ), respectively. The highlighted region in the lower panel (−0.05 km s−1 ≤ ∆VLSR ≤ +0.05 km s−1 ) shows a velocity resolution of the spectra. Alt text: Two panels. The vertical axes in the upper and lower panels indicate line width in the unit of kilometer per second the velocity shifts from the systemic velocity in the unit of kilometer per second, respectively. In the horizontal axis, the molecular species are listed. -- astro-ph.GA

Astrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar

Q-band Line Survey Observations Toward A Carbon-chain-rich Clump In The Serpens South Region

by Keith CowingSeptember 26, 2024September 26, 2024

This image, taken from a data visualization, shows Arctic sea ice minimum extent on September 11, 2024. The yellow boundary shows the minimum extent averaged over the 30-year period from 1981 to 2010. Download high-resolution video and images from NASA’s Scientific Visualization Studio: hhttps://svsdev.gsfc.nasa.gov/5382 NASA’s Scientific Visualization Studio/Trent L. Schindler

Analog Studies, Arctic / Antarctic / Alpine, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Cryobiology, Europa, Ganymede, Habitable Zones, Icy Worlds, Mapping, Geodesy, Cartography, ROVs/Submersibles/Diving, Water/Hycean Worlds & Oceanography

Ice Planet Update: Arctic Sea Ice Near Historic Low – Antarctic Ice Continues Decline

by Keith CowingSeptember 25, 2024September 25, 2024

Astrobiology tartan

Astrobiology (general), Education and Outreach, People Of Astrobiology, Societal Issues

There Is An Officially Registered Astrobiology Tartan

by Keith CowingSeptember 25, 2024September 25, 2024

Illustration of the general methodology. "Sorg" is for "organosulfur gases," "GC" is for "gas chromatograph," and "SCD" is for "sulfur chemiluminescence detection." -- University of Colorado Boulder

Astrochemistry, Astropharmacy / Biotechnology, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Genomics, Proteomics, Bioinformatics, Nanotechnology & SynBio, Origin & Evolution of Life

Potential Indicators Of Life On Other Planets Can Be Created In A Lab

by Keith CowingSeptember 25, 2024