June 2025 – Page 24 – My WordPress Site

Space Microbial Culture Collection

Biogeochemical Cycles & Geobiology, Microbiology & Virology, Missions & Hardware, Planetary Protection & Biosafety, Sample Return

Space Microbial Culture Collection Selected As The Official Microbial Isolate Repository For Planetary Protection Research

by Keith CowingJune 2, 2025June 2, 2025

Top Panel: Absorption cross sections for a temperature of 650K and pressure of 1 bar used in the retrieval analysis from Hood et al. (2024). Bottom Panel: The complete SED for 2MASS J0415−0935 with an inset showing the 9 - 15 µm region. Prominent absorption features are labeled including a tentative CO2 feature between 14 - 16 µm. -- astro-ph.SR

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

Diversity of Cold Worlds: A Near Complete Spectral Energy Distribution for 2MASS J04151954-0935066 using JWST

by Keith CowingJune 2, 2025June 2, 2025

GJ 357 b NIRISS white light curve fit results. Top panel: Raw GJ 357 b order 1 white light curve, with the best-fitting astrophysical transit + systematics model overplotted in black. The first ∼40% of the transit was missed by our observation. Integrations from ∼0.8 – 1.5 hr post-transit mid-point (shown as faded) were excluded from the fit due to uncorrectable systematics. Second panel: Systematics corrected white light curve, with the best-fitting astrophysical model overplotted in black. Third panel: Residuals to the light curve fit. Some correlated noise remains in the post-transit baseline which is not adequately captured by our systematics model. Bottom panel: Histogram of residuals. -- astro-ph.EP

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

JWST NIRISS Transmission Spectroscopy of the Super-Earth GJ 357b, a Favourable Target for Atmospheric Retention

by Keith CowingJune 2, 2025June 2, 2025

Magnification of Rhinocladiella Simili cells in PDB culture medium, showing pseudohypha behavior --NPJ Microgravity via PubMed

Analog Studies, Biophysics, Biosignatures & Paleobiology, Cryobiology, Extremeophiles and Extreme Environments, Habitable Zones, Icy Worlds, Mars, Microbiology & Virology, Radiation

Survival Strategies Of Rhinocladiella Similis In Perchlorate-rich Mars Like Environments

by Keith CowingJune 2, 2025June 2, 2025

Planning diagram showing variation in latitude range (between heavy black lines) vs. season (solar longitude, LS) for SHARAD standard VLR observations wherein all associated spacecraft maneuvers occur when the MRO spacecraft is in eclipse. Colors and lighter black lines show accessible terrains, keyed to investigations proposed for MRO Extended Mission 7. Polar regions are not accessible under these constraints. -- astro-ph.EP

Astrogeology, Caves, Craters, Mountains & Lava Tubes, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Mars

SHARAD Illuminates Deeper Martian Subsurface Structures with a Boost from Very Large Rolls of the MRO Spacecraft

by Keith CowingJune 1, 2025June 1, 2025

Distribution of simulated EEC yield (solid contours) and underlying planet population (dotted contours) around FGK-type stars within 20 pc. We show the planetary radius over incident flux distribution, where the color shading represents the relative density of planet occurrences in this parameter space. The colored contours enclose 10% to 100% of the total planet counts, with the innermost contour indicating the highest-density regions. Grey dashed lines represent EEC boundaries around a Sun-like star with S/S⊕ ∈ [0.356, 1.107] and R/R⊕ ∈ [0.8 · S 0.25, 1.4] (Kopparapu et al. 2014; Stark et al. 2019; Quanz et al. 2022b). Top and right margin plots show the individual distributions of incident flux and planetary radius of detected and total underlying populations. Underlying synthetic planet populations are based on Kammerer et al. (2022). -- astro-ph.EP

Astronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy

Detecting Atmospheric CO2 Trends as Population-Level Signatures for Long-Term Stable Water Oceans and Biotic Activity on Temperate Terrestrial Exoplanets

by Keith CowingJune 1, 2025June 1, 2025

χ2 maps for the CS RT models. The free parameters f0 and Re are on the x− and y−axes, respectively. The red + sign denotes the best-fit model, and the white contours correspond to the 1σ, 2σ, and 3σ ranges. -- astro-ph.SR

Astrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Interstellar

Charting Circumstellar Chemistry of Carbon-rich Asymptotic Giant Branch Stars. II. Abundances and Spatial Distributions of CS

by Keith CowingJune 1, 2025June 1, 2025

MUSE and NIRCam images of d203-504 environment. Left: MUSE NFM composite image of both d203-506 (bottom left) and d203-504 (top). Red: the [C i](λ8727˚A) map showing disk contributions from both d203-506 and d203-504 objects. Green: the [Fe ii] (λ8617˚A) map corresponding to jets from both objects. Blue: the Hα emission map showing the ionization fronts (only d203-504 appears to have one). The glow on the top right corresponds to the Orion Bar ionization front. Right: JWST NIRCam image of the same system from the F210M filter. -- astro-ph.GA

Astrochemistry, Astrogeology, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Interstellar

Solar C/O Ratio In Planet-forming Gas at 1 au In A Highly Irradiated Disk

by Keith CowingJune 1, 2025June 1, 2025