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.

March 24, 2023 updates

The JWST Early-release Science Program for Direct Observations of Exoplanetary Systems II: A 1 to 20 μm Spectrum of the Planetary-mass Companion VHS 1256–1257 b
https://iopscience.iop.org/article/10.3847/2041-8213/acb04a

MOA-2020-BLG-208Lb: Cool Sub-Saturn-mass Planet within Predicted Desert https://iopscience.iop.org/article/10.3847/1538-3881/acbcc8

Dynamical Evolution of Closely Packed Multiple Planetary Systems Subject to Atmospheric Mass Loss
https://iopscience.iop.org/article/10.3847/1538-3881/acc070

Observation and feature measurements of cloud and haze in exoplanet atmosphere based on transmission spectra
https://drpress.org/ojs/index.php/HSET/article/view/5738

A Catalogue of Exoplanet Atmospheric Retrieval Codes
https://arxiv.org/abs/2303.12925

Coronal X-Ray Emission from Nearby, Low-Mass, Exoplanet Host Stars Observed by the MUSCLES and Mega-MUSCLES HST Treasury Survey Projects
https://arxiv.org/abs/2303.12929

Tentative detection of titanium oxide in the atmosphere of WASP-69 b with a 4m ground-based telescope
https://arxiv.org/abs/2303.13202

An extreme test case for planet formation: a close-in Neptune orbiting an ultracool star
https://arxiv.org/abs/2303.13321

March 23, 2023 updates

Acceleration of 1I/‘Oumuamua from radiolytically produced H2 in H2O ice
https://www.nature.com/articles/s41586-022-05687-w

A New Mission Will Search for Habitable Planets at Alpha Centauri
https://www.universetoday.com/160625/a-new-mission-will-search-for-habitable-planets-at-alpha-centauri

The high-albedo, low polarization disk around HD 114082 that harbors a Jupiter-sized transiting planet – Constraints from VLT/SPHERE completed with TESS, Gaia, and radial velocities
https://www.aanda.org/articles/aa/full_html/2023/04/aa44380-22/aa44380-22.html

PySME – Spectroscopy Made Easier
https://www.aanda.org/articles/aa/full_html/2023/03/aa44482-22/aa44482-22.html

The Effect of Metallicity on the Nonequilibrium Abundance of Hydrogen-dominated Exoplanet Atmospheres
https://iopscience.iop.org/article/10.3847/1538-4357/acb54e

Rescue and Recovery as a Theological Principle, and a Key to Morality in Extraterrestrial Species
https://onlinelibrary.wiley.com/doi/10.1111/zygo.12879

Dark Exoplanets
https://arxiv.org/abs/2303.12129

The Masses of a Sample of Radial-Velocity Exoplanets with Astrometric Measurements
https://arxiv.org/abs/2303.12409

March 22, 2023 updates

Dynamical masses of two young transiting sub-Neptunes orbiting HD 63433 https://www.aanda.org/articles/aa/full_html/2023/03/aa45397-22/aa45397-22.html

From exo-Earths to exo-Venuses: Flux and polarization signatures of reflected light
https://www.aanda.org/articles/aa/full_html/2023/03/aa43190-22/aa43190-22.html

Discovery of a massive giant planet with extreme density around a sub-giant star TOI-4603
https://arxiv.org/abs/2303.11841

Forming super-Mercuries: The role of stellar abundances
https://arxiv.org/abs/2303.11948

Comparing Apples with Apples: Robust Detection Limits for Exoplanet High-Contrast Imaging in the Presence of non-Gaussian Noise
https://arxiv.org/abs/2303.12030

March 21, 2023 updates

Astronauts that hibernate on long spaceflights is not just for sci-fi. We could test it in 10 years.
https://www.space.com/astronaut-hibernation-trials-possible-in-decade

Activity of TRAPPIST-1 Analogs
https://link.springer.com/article/10.1134/S1063773722110068

A full transit of v2 Lupi d and the search for an exomoon in its Hill sphere with CHEOPS
https://www.aanda.org/articles/aa/full_html/2023/03/aa44790-22/aa44790-22.html

The Breakthrough Listen Search for Intelligent Life: Nearby Stars’ Close Encounters with the Brightest Earth Transmissions
https://iopscience.iop.org/article/10.1088/1538-3873/acc1a1

TOI-1695 b: A Water World Orbiting an Early-M Dwarf in the Planet Radius Valley
https://iopscience.iop.org/article/10.3847/1538-3881/acbdfd

Direct Imaging Explorations for Companions around Mid–Late M Stars from the Subaru/IRD Strategic Program
https://iopscience.iop.org/article/10.3847/1538-3881/acbf37

Decomposition of Benzene during Impacts in N2-dominated Atmospheres https://iopscience.iop.org/article/10.3847/1538-4357/acbd48

Bio-techno-signature Monitoring and Communication Guideposts for Extraterrestrial Life
https://iopscience.iop.org/article/10.3847/2515-5172/acc4b8

March 17, 2023 updates

Sub-Jovian desert of exoplanets at its boundaries – Parameter dependence along the main sequence
https://www.aanda.org/articles/aa/full_html/2023/03/aa44846-22/aa44846-22.html

Observability of silicates in volatile atmospheres of super-Earths and sub-Neptunes – Exploring the edge of the evaporation desert
https://www.aanda.org/articles/aa/full_html/2023/03/aa45521-22/aa45521-22.html

Removal of Hot Saturns in Mass–Radius Plane by Runaway Mass Loss https://iopscience.iop.org/article/10.3847/2041-8213/acbd35

A Gap-sharing Planet Pair Shaping the Crescent in HD 163296: A Disk Sculpted by a Resonant Chain
https://iopscience.iop.org/article/10.3847/2041-8213/acbea8

A persistent influence of supernovae on biodiversity over the Phanerozoic
https://onlinelibrary.wiley.com/doi/10.1002/ece3.9898

An Origin of Narrow Extended Structure in the Interstellar Medium: An Interstellar Contrail Created by a Fast-moving Massive Object
https://iopscience.iop.org/article/10.3847/1538-4357/acb7ea

Using Machine Learning to determine the most important features in exoplanet verification
https://www.jsr.org/hs/index.php/path/article/view/2821

OGLE-2016-BLG-1195 AO: Lens, Companion to Lens or Source, or None of the Above?
https://arxiv.org/abs/2303.08876

Solar center-to-limb variation in Rossiter-McLaughlin and exoplanet transmission spectroscopy
https://arxiv.org/abs/2303.09169

ExoplANNET: A deep learning algorithm to detect and identify planetary signals in radial velocity data
https://arxiv.org/abs/2303.09335

Detection of a high-velocity sodium feature on the ultra-hot Jupiter WASP-121 b
https://arxiv.org/abs/2303.09376

On the origin of the non-detection of metastable HeI in the upper atmosphere of the hot Jupiter WASP-80b
https://arxiv.org/abs/2303.09501

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