Tootfinder

Searching for GEMS: TOI-5916 b & TOI-6158 b are two Saturn-density planets orbiting M2 dwarfs
Shane O'Brien, Amber Wong, Te Han, Paul Robertson, Shubham Kanodia, Caleb I. Ca\~nas, Arvind F. Gupta, Tera Swaby, Henry A. Kobulnicky, Nidia Morrell, Michael Rodruck, Andrea S. J. Lin, Andrew Monson, William D. Cochran, Chad F. Bender, Scott A. Diddams, Samuel Halverson, Daniel M. Krolikowski, Jessica E. Libby-Roberts, Joe P. Ninan, Arpita Roy, Christian Schwab, Gudmundur Stefansson

Searching for GEMS: TOI-5916 b & TOI-6158 b are two Saturn-density planets orbiting M2 dwarfs
We confirm the planetary nature of (1) TOI-5916 b and (2) TOI-6158 b, two Exoplanets Transiting M-dwarf Stars (GEMS), both discovered by the Transiting Exoplanet Survey Satellite (TESS). Both systems were confirmed with ground-based photometry (Red Buttes Observatory and Swope, respectively) and radial velocity data from the Habitable-zone Planet Finder. Their radii are $R_{1}=11.8^{+0.52}_{-0.51}\text{ }R_{\oplus}$ and $R_{2}=10.4^{+2.70}_{-1.11}\text{ }R_{\oplus}$ and masses are $M_{1}=219\pm…

Orbital statistics of multiple systems formed from small-$N$ subclusters
Hannah Ambrose, Anthony Whitworth
https://arxiv.org/abs/2507.18701 https://arxiv.o…

Orbital statistics of multiple systems formed from small-$N$ subclusters
We use numerical $N$-body experiments to explore the statistics of multiple systems formed in small-$N$ subclusters, i.e. the distributions of orbital semi-major axis, $a$, orbital eccentricity, $e$, mass ratio, $q$, mutual orbital inclination, $θ$, and ejection velocity, $\upsilon_{\rm ej}$. The stars in a subcluster are evolved as if they are the fragmentation products of a single isolated prestellar core from which most of the natal gas has already been dispersed, and there are no correlati…