[astro-ph.EP] The PLATO Stellar Variability Mitigation Working Group designed a radial-velocity (RV) data challenge to assess the precision and accuracy achievable on RV semi-amplitudes in the context of the future […]
Stellar Cartography
![Schematic diagram of the Fragmented Pupil telescope concept. Left Panel: Bright stars available over ∼degree scale optical fields are condensed into an artificial cluster at sub-arcminute scales (red box). Middle Panel: This is accomplished in a single reflection from a high-stability tessellated optical surface aboard a stable space telescope. Right Panel: Precision astrometric monitoring can then be accomplished by analysis of the resulting well-sampled interferograms in the image plane. Here the central science target is surrounded by a set of 6 reference stars, condensed to lie at arcsecond scales. -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Astrometric-detection.png?resize=1200%2C555&ssl=1)
Posted inExoplanets, -moons, -comets
Astrometric Detection Of Rocky Exoplanets From Inexpensive Space Platforms
[astro-ph.IM] The detection of orbiting exoplanets by way of astrometric monitoring of the host star to reveal gravitationally induced reflex motion requires extreme precision and measurement stability when targeting Earth-mass […]
![CPD continuum flux densities at 345 GHz for different planet masses and separations. The dots mark the solar system gas giants, the directly imaged planets in PDS 70 and WISPIT 2, and candidate protoplanets in disc gaps. For comparison, the distribution of fully formed gas giants is shown (top panel). The white curves display sensitivity limits. -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Planet-formation.png?resize=1200%2C717&ssl=1)
Posted inAstronomy & Telescopes
Planet Formation On Solar System Scales
[astro-ph.IM] Giant planets are often regarded as primordial protoplanetary “architects”. Their formation and interactions with planetesimals and other planets during and after the protoplanetary disc phase are key to setting […]
![Sky positions of the TESS M&M sample (shown in a full-sky Mollweide projection), with number of single-sector TESS light curves through Year 6 as colorbar. -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/The-Occurrence.png?resize=1200%2C717&ssl=1)
Posted inEuropa
The Occurrence of Circumbinary Planets Around TESS M-dwarf Eclipsing Binaries
[astro-ph.EP] We present the first determination of the occurrence of transiting circumbinary planets (CBPs) in TESS data. Since tight binaries represent a constrained environment relative to single stars, CBPs contribute […]
Posted inAstronomy & Telescopes
ALMA Reveals Planetary Formation Structures In Small Disks
[ALMA] Thanks to the extraordinary sharpness of ALMA’s images, a research team has discovered rings, grooves, and cavities in extremely compact disks surrounding young stars.
![Full JWST spectrum of HOPS-68. We indicate the molecular absorption bands of oxygen-bearing molecules as studied in this work (SiO, H2O, CO2 and CO) and of carbon-bearing molecules as studied in paper B, as well as the most notable ice and silicate absorption features. Not indicated are 13CCH2, CS, and CH4 in the 7.3-7.8 µm region, and CH3, C4H2 and C6H2 around ∼ 16 µm, which will all be studied in paper B. Some prominent H2 emission lines are highlighted with a black arrow. HOPS-68 is not detected in continuum at wavelengths lower than 2.2 µm. The inset shows a zoom-in to the 7.8-8.6 µm region, which highlights the detection of SiO. -- [astro-ph.SR]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/A-breath.png?resize=1200%2C558&ssl=1)
Posted inAstrochemistry
A Breath Of Fresh Air: Oxygen Enhancement From Silicate Sublimation During Early Protostellar Evolution
[astro-ph.SR] Recently, an analog to the t = 0 moment of our Solar System’s meteoritic record was identified for the first time around the Class I protostar HOPS-315.
![Activity-age relationship for solar-type stars from Pezzotti et al. (2026). HD 219134 is denoted by the green square. Kepler LEGACY data from Pezzotti et al. (2026) are shown as cyan dots, Booth et al. (2017) data are indicated by salmon pentagons, and the Sun is shown by a black circled dot. The black lines indicate the linear fit from Booth et al. (2017) (dashed line) and Pezzotti et al. (2026) (dotted line). -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Detailed.png?resize=1200%2C718&ssl=1)
Posted inStellar Cartography
Detailed Study of HD 219134: A Benchmark K-dwarf With A Compact Planetary System
[astro-ph.EP] Space missions such as CoRoT, Kepler, and TESS have transformed asteroseismology and its synergies with exoplanet science.
![Architecture and workflow of AstroGenesis. Researchers interact with the system through a chatbot interface and select an appropriate DSRM corresponding to the astrophysical source class under investigation. Within the selected DSRM, a Supervisor Agent coordinates task execution through a Planner/Replanner and a set of specialized agents responsible for literature analysis, observational data retrieval, theoretical modeling, and research ideation. These agents operate using external tools which include, astrophysical tools, data-analysis modules, and pre-trained models to perform modeling of the data, etc. -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/AstroGenesis.png?resize=1200%2C722&ssl=1)
Posted inAI - Data - Apps - Cybernetics
AstroGenesis: A Domain-Specific Multi-Agent AI for Astrophysical Research
[astro-ph.IM] Modern astrophysical research requires the integration of rapidly expanding scientific literature, heterogeneous observational data, and increasingly complex physical models.
Posted inExoplanets, -moons, -comets
SOPHIE And TESS Characterization Of Fourteen TESS Objects Of Interest: Nine Planetary Systems And Five Low-mass Stellar Companions
[astro-ph.EP] We present fourteen TESS Objects of Interest (TOIs) from the SOPHIE-TESS follow-up program. Combining TESS photometry, SOPHIE radial velocities (RVs), ground-based photometry, and high-resolution imaging, we establish the nature […]
Posted inExoplanets, -moons, -comets
More Than One Thousand TESS Planets
[NASA Exoplanet Archive] This week’s 70 new planets have unlocked a new exoplanet milestone: 1,000 planets have been discovered with data from NASA’s Transiting Exoplanet Survey Satellite (TESS)! The new […]