Interstellar Updates

 

These are items of interest to the interstellar exploration community that we’ve found in our quest for information that will help us advance toward our goals.  If you know of anything we’ve overlooked, or any sources of such information we should monitor, or if you would like to be added to our IRG-updates mailing list and receive these updates in you email every weekday, please send that information to info@irg.space.

You can now search our database of interstellar updates and find items of interest to you.

September 14, 2023 updates

CDSLU: Communicating Discoveries in the Search for Life in the Universe
https://apply.knowinnovation.com/cdslu/

Revisiting planetary systems in the Okayama Planet Search Program: A new long-period planet, RV astrometry joint analysis, and a
multiplicity-metallicity trend around evolved stars
https://academic.oup.com/pasj/advance-article-abstract/doi/10.1093/pasj/psad056/7272944

An Assay on The Hobbesian Trap and Axioms of First Contact
https://www.sciencedirect.com/science/article/pii/S0265964623000486

A sub-Saturn mass-radius desert for planets with equilibrium temperature <600 K
https://www.sciencedirect.com/science/article/abs/pii/S0019103523003767

Atmospheric retrievals with petitRADTRANS
https://arxiv.org/abs/2309.06755

Atmospheric Reconnaissance of TRAPPIST-1 b with JWST/NIRISS: Evidence for Strong Stellar Contamination in the Transmission Spectra
https://arxiv.org/abs/2309.07047

Making Habitable Worlds: Planets Versus Megastructures
https://arxiv.org/abs/2309.06562

Application of the Thermodynamics of Radiation to Dyson Spheres as Work Extractors and Computational Engines, and their Observational Consequences
https://arxiv.org/abs/2309.06564

Percolation of ‘Civilisation’ in a Homogeneous Isotropic Universe
https://arxiv.org/abs/2309.06575

September 13, 2023 updates

Detecting molecules in Ariel low resolution transmission spectra
https://link.springer.com/article/10.1007/s10686-023-09911-x

Exploring Uncertainty and Risk in Contemporary Astrobiology (EURiCA)
https://www.durham.ac.uk/research/institutes-and-centres/humanities-engaging-science-society/research/eurica-project-leverhulme/

The GAPS Programme at TNG – XLVII. A conundrum resolved: HIP 66074b/Gaia-3b characterised as a massive giant planet on a quasi-face-on and extremely elongated orbit
https://www.aanda.org/articles/aa/full_html/2023/09/aa47329-23/aa47329-23.html

The GAPS programme at TNG – XLVI. Deep search for low-mass planets in late-dwarf systems hosting cold Jupiters
https://www.aanda.org/articles/aa/abs/2023/09/aa46476-23/aa46476-23.html

Water Absorption in the Transmission Spectrum of the Water World Candidate GJ 9827 d
https://iopscience.iop.org/article/10.3847/2041-8213/acebf0

New evidence about HW Vir’s circumbinary planets from \textit{Hipparcos-Gaia} astrometry and a reanalysis of the eclipse timing variations using nested sampling
https://arxiv.org/abs/2309.05716

September 12, 2023 updates

Webb Discovers Methane, Carbon Dioxide in Atmosphere of K2-18 b
https://www.nasa.gov/goddard/2023/webb-discovers-methane-carbon-dioxide-in-atmosphere-of-k2-18b

Carbon-bearing Molecules in a Possible Hycean Atmosphere
https://arxiv.org/abs/2309.05566

Stellar obliquity and planetary albedo in HAT-P-32 – Derived from the TESS light curve
https://www.aanda.org/articles/aa/full_html/2023/09/aa47704-23/aa47704-23.html

Induction heating of planetary interiors in white dwarf systems
https://www.aanda.org/articles/aa/full_html/2023/09/aa45225-22/aa45225-22.html

A Nondetection of Iron in the First High-resolution Emission Study of the Lava Planet 55 Cnc e
https://iopscience.iop.org/article/10.3847/1538-3881/acf28e

The Influence of Hydrogen Sulfide on the Optical Properties of Planetary Organic Hazes: Implications for Exoplanet Climate Modeling
https://iopscience.iop.org/article/10.3847/2041-8213/acf1a2

Swarming Proxima Centauri: Optical Communications Over Interstellar Distances
https://www.researchgate.net/publication/373833951_Swarming_Proxima_Centauri_Optical_Communications_Over_Interstellar_Distances

Bioverse: The Habitable Zone Inner Edge Discontinuity as an Imprint of Runaway Greenhouse Climates on Exoplanet Demographics
https://arxiv.org/abs/2309.04518

September 11, 2023 Updates

Do all gaps in protoplanetary discs host planets?
https://www.aanda.org/articles/aa/full_html/2023/09/aa47264-23/aa47264-23.html

Radial distribution of giant exoplanets at Solar System scales
https://www.aanda.org/articles/aa/full_html/2023/09/aa46165-23/aa46165-23.html

Claims of interstellar meteor fragments in the ocean spark controversy
https://www.sciencedirect.com/science/article/abs/pii/S0262407923016688

Gaia22dkvLb: A Microlensing Planet Potentially Accessible to Radial-Velocity Characterization
https://arxiv.org/abs/2309.03944

Methane Throughout the Atmosphere of the Warm Exoplanet WASP-80b
https://arxiv.org/abs/2309.04042

Two mini-Neptunes Transiting the Adolescent K-star HIP 113103 Confirmed with TESS and CHEOPS
https://arxiv.org/abs/2309.04137

September 08, 2023 updates

Trajectory of a Spacecraft When It Passes by a Gravitational Body During Interstellar Travel
https://arc.aiaa.org/doi/10.2514/1.A35684

Planetary biotechnospheres, biotechnosignatures and the search for extraterrestrial intelligence
https://www.cambridge.org/core/journals/international-journal-of-astrobiology/article/planetary-biotechnospheres-biotechnosignatures-and-the-search-for-extraterrestrial-intelligence/089931BD61982779CCA1EDF6861E7472

Giant Impact Events for Protoplanets: Energetics of Atmospheric Erosion by Head-on Collision
https://iopscience.iop.org/article/10.3847/1538-4357/ace9ba

The Tianlin Mission: A 6 m UV/Opt/IR Space Telescope to Explore Habitable Worlds and the Universe
https://iopscience.iop.org/article/10.1088/1674-4527/ace90f

The Aligned Orbit of the Eccentric Proto Hot Jupiter TOI-3362b
https://arxiv.org/abs/2309.03306

A Wolf 359 in sheep’s clothing: Hunting for substellar companions in the fifth-closest system using combined high-contrast imaging and radial velocity analysis
https://arxiv.org/abs/2309.03402