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 1 2 … 263 Next →
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
