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.

February 08, 2023 updates

Updated characterization of long-period single companion by combining radial velocity, relative astrometry, and absolute astrometry
https://www.aanda.org/articles/aa/full_html/2023/02/aa45396-22/aa45396-22.html

The Roasting Marshmallows Program with IGRINS on Gemini South I: Composition and Climate of the Ultrahot Jupiter WASP-18 b
https://iopscience.iop.org/article/10.3847/1538-3881/acaf5c

TOI-561 b: A Low-density Ultra-short-period “Rocky” Planet around a Metal-poor Star
https://iopscience.iop.org/article/10.3847/1538-3881/acad83

The Demographics of Terrestrial Planets in the Venus Zone
https://arxiv.org/abs/2302.03055

When, where, and how many planets end up in first-order resonances?
https://arxiv.org/abs/2302.03070

February 07, 2023 updates

Large Interferometer for Exoplanets: VIII. Where Is the Phosphine? Observing Exoplanetary PH3 with a Space-Based Mid-Infrared Nulling Interferometer
https://liebertpub.com/doi/10.1089/ast.2022.0010

Specular Reflections from Artificial Surfaces as Technosignature
https://liebertpub.com/doi/10.1089/ast.2022.0101

High-Gain Antenna for NASA’s Roman Mission Clears Environmental Tests
https://www.nasa.gov/image-feature/goddard/2023/high-gain-antenna-for-nasas-roman-mission-clears-environmental-tests

The CARMENES search for exoplanets around M dwarfs. Wolf 1069 b: Earth-mass planet in the habitable zone of a nearby, very low-mass star
https://arxiv.org/abs/2301.02477

From exo-Earths to exo-Venuses—Flux and Polarization Signatures of Reflected Light
https://arxiv.org/abs/2301.11314

Simulation of the Earth’s radio-leakage from mobile towers as seen from selected nearby stellar systems
https://academic.oup.com/mnras/advance-article-abstract/doi/10.1093/mnras/stad378/7028804

The Unistellar Exoplanet Campaign: Citizen Science Results and Inherent Education Opportunities
https://iopscience.iop.org/article/10.1088/1538-3873/acaa58

Magnetic activity variability from Hα line intensive monitoring for two F-type stars having a hot-Jupiter, τ Bootis A and υ Andromedae A
https://arxiv.org/abs/2302.02135

Discovering planets with PLATO: a comparison of algorithms for stellar activity filtering https://arxiv.org/abs/2302.02183

February 06, 2023 Updates

Large Interferometer For Exoplanets (LIFE)
VII. Practical implementation of a five-telescope kernel-nulling beam combiner with a discussion on instrumental uncertainties and redundancy benefits
https://www.aanda.org/articles/aa/full_html/2023/02/aa43863-22/aa43863-22.html

Supernovae might be a good cue to hunt for alien signals
https://www.sciencedirect.com/science/article/abs/pii/S0262407923001823

Stable lifetime of compact, evenly-spaced planetary systems with non-equal masses
https://academic.oup.com/mnras/advance-article-abstract/doi/10.1093/mnras/stad393/7025959?redirectedFrom=fulltext

A new dynamical modeling of the WASP-47 system with CHEOPS observations
https://arxiv.org/abs/2302.01352

Absence of extended atmospheres in low-mass star radius-gap planets GJ 9827 b, GJ 9827 d and TOI-1235 b
https://arxiv.org/abs/2302.01479

The low density, hot Jupiter TOI-640 b is on a polar orbit
https://arxiv.org/abs/2302.01702

Searching for the nature of stars with debris disks and planets
https://arxiv.org/abs/2302.01850

A full transit of ν2 Lupi d and the search for an exomoon in its Hill sphere with CHEOPS
https://arxiv.org/abs/2302.01853

February 03, 2023 updates

TESS Hunt for Young and Maturing Exoplanets (THYME). IX. A 27 Myr Extended Population of Lower Centaurus Crux with a Transiting Two-planet System
https://iopscience.iop.org/article/10.3847/1538-3881/aca8fc

Hubble Space Telescope Transmission Spectroscopy for the Temperate Sub-Neptune TOI-270 d: A Possible Hydrogen-rich Atmosphere Containing Water Vapor h
ttps://iopscience.iop.org/article/10.3847/1538-3881/aca90b

An Earth-sized Planet around an M5 Dwarf Star at 22 pc
https://arxiv.org/abs/2302.00699

TESS Asteroseismic Analysis of HD 76920: The Giant Star Hosting An Extremely Eccentric Exoplanet
https://arxiv.org/abs/2302.01102

OGLE-2016-BLG-1195Lb: A Sub-Neptune Beyond the Snow Line of an M-dwarf Confirmed by Keck AO
https://arxiv.org/abs/2302.01168

February 02, 2023 updates

The tidal excitation of r modes in a solar type star orbited by a giant planet companion and the effect on orbital evolution I: The aligned case
https://academic.oup.com/mnras/advance-article-abstract/doi/10.1093/mnras/stad358/7022329

High-eccentricity Migration with Disk-induced Spin–Orbit Misalignment: A Preference for Perpendicular Hot Jupiters
https://iopscience.iop.org/article/10.3847/2041-8213/acaea6

Evidence that Core-Powered Mass-Loss Dominates Over Photoevaporation in Shaping the Kepler Radius Valley
https://arxiv.org/abs/2302.00009

A dynamical mass for GJ 463 b: A massive super-Jupiter companion beyond the snow line of a nearby M dwarf
https://arxiv.org/abs/2302.00413

On the follow-up efforts of long-period transiting planet candidates detected with Gaia astrometry
https://arxiv.org/abs/2302.00420

A Dynamical Systems Approach to the Theory of Circumbinary Orbits in the Circular Restricted Problem h
ttps://arxiv.org/abs/2302.00580

The PEPSI Exoplanet Transit Survey (PETS). II. A Deep Search for Thermal Inversion Agents in KELT-20 b/MASCARA-2 b with Emission and Transmission Spectroscopy
https://arxiv.org/abs/2205.12162