1+ day, 4+ hour ago  (434+ words) Background of the Research The diverse organic molecules present in outer space hold information about the chemical evolution (Note 4 ) that occurred when the solar system was formed, and it is thought that their arrival on early Earth contributed to the…...

1+ week, 3+ day ago  (171+ words) In particular, planets with binary-star hosts have a lower overall occurrence rate compared to their single-star counterparts, as well as a suppressed relative occurrence rate for sub-Neptunes (Rp=24 R) compared to super-Earths (Rp=1. 01. 5 R). These differences are most pronounced in close separation…...

2+ week, 1+ day ago  (198+ words) astrobiology. com Tianwen-2 Target Asteroid (469219) Kamo'oalewa Probably Develops An Itokawa-compositional But Ultra-highly Space-weathered Surface China's Tianwen-2 mission plans to return samples from a small, rapidly spinning Earth quasi-satellite (469219) Kamo'oalewa. Previous studies linked Kamo'oalewa to lunar composition and origin. Here, we…...

3+ week, 6+ day ago  (378+ words) astrobiology. com TOI-4552 b: A New Ultra-short Period Rocky World Revealed By NIRPS And TESS A particularly intriguing subclass of rocky exoplanets are the ultra-short period (USP) worlds that orbit their host stars in less than a day. These planets are…...

1+ mon, 6+ day ago  (184+ words) In the domain of planetary science, novelty detection is gaining attention because of the operational opportunities it offers, including annotated data products and downlink prioritization. Using a variational autoencoder (VAE), this work improves upon state-of-the-art novelty detection performance in the…...

1+ mon, 2+ week ago  (223+ words) We present the deepest systematic search for planets around mid-to-late M dwarfs to date. We have surveyed 8134 mid-to-late M dwarfs observed by TESS with a custom built pipeline and recover 77 vetted transiting planet candidates. We characterize the sensitivity of our…...

1+ mon, 2+ week ago  (659+ words) astrobiology. com Detection Of CO2 Ice In The Planetary Nebula NGC 6302 Using JWST/MIRI observations, we report the detection of CO2 ice in the dusty torus of the planetary nebula NGC 6302, an environment generally considered hostile to fragile molecular species and ices…...

1+ mon, 2+ week ago  (247+ words) astrobiology. com Efficient Reduction Of Stellar Contamination And Noise In Planetary Transmission Spectra Using Neural Networks Context: JWST has enabled transmission spectroscopy at unprecedented precision, but stellar heterogeneities (spots and faculae) remain a dominant contamination source that can bias atmospheric…...

2+ mon, 6+ hour ago  (637+ words) An international scientific team, led by the University of Warwick and involving the Canary Islands Institute of Astrophysics, has used the European Space Agency's Cheops satellite to discover that the planetary system around the star LHS 1903 challenges current planet formation…...

2+ mon, 1+ week ago  (242+ words) In this work, we explore several ways to detect possible exocomet transits in the TESS (The Transiting Exoplanet Survey Satellite) light curves. The first one has been presented in our previous work, a machine learning approach based on the Random…...