We confirm the planetary nature of TOI-532b, using a combination precise near-infrared radial velocities with Habitable-zone Planet Finder, TESS light curves, ground based photometric follow-up, and high-contrast imaging. TOI-532 is faint (J$\sim 11.5$) metal-rich M dwarf Teff = $3957\pm69$ K [Fe/H] $0.38\pm0.04$; it hosts transiting gaseous planet period $\sim 2.3$ days. Joint fitting ground-b...

We report the discovery of a multi-planetary system transiting M0 V dwarf HD 260655 (GJ 239, TOI-4599). The consists at least two planets, namely b, with period 2.77 d, radius R$_b$ = 1.240$\pm$0.023 R$_\oplus$, mass M$_b$ 2.14$\pm$0.34 M$_\oplus$, and bulk density $\rho_b$ 6.2$\pm$1.0 g cm$^{-3}$, c, 5.71 R$_c$ 1.533$^{+0.051}_{-0.046}$ M$_c$ 3.09$\pm$0.48 $\rho_c$ 4.7$^{+0.9}_{-0.8}$ cm$^{-3}...

We model substructure in the protoplanetary disks around DoAr 44 and HD 163296 order to better understand conditions under which planets may form. match archival millimeter-wavelength thermal emission against models of disks' structure that are radiation balance with starlight heating vertical hydrostatic equilibrium, then compare polarized scattered near-infrared images disks. The millimeter a...

Abstract We consider the dynamics of a quantum particle mass m on n -edges star-graph with Hamiltonian $$H_K=-(2m)^{-1}\hbar ^2 \Delta $$ H K = - ( 2 m ) </mm...

We report the discovery and validation of two TESS exoplanets orbiting faint M dwarfs: TOI-4479b TOI-2081b. have jointly analyzed space (TESS mission) ground based (MuSCAT2, MuSCAT3 SINISTRO instruments) lightcurves using our multi-color photometry transit analysis pipeline. This allowed us to compute contamination limits for both candidates validate them as planet-sized companions. found be a ...

[Abridged] We exploit the extreme radial velocity (RV) precision of ultra-stable echelle spectrograph ESPRESSO on VLT to unveil physical properties transiting sub-Neptune TOI-130 b, uncovered by TESS orbiting nearby, bright, late F-type star HD 5278 (TOI-130) with a period $P_{\rm b}=14.3$. use 43 high-resolution spectra and broad-band photometry information derive accurate stellar atmospheric ...

The dynamical history of stars influences the formation and evolution planets significantly. To explore influence on planet from observations, we assume that who experienced significantly different histories tend to have relative velocities. Utilizing accurate Gaia-Kepler Stellar Properties Catalog, select single main-sequence divide these into three groups according their velocities, i.e. high...

ABSTRACT Very little is known about the young planet population because detection of small planets orbiting stars obscured by effects stellar activity and fast rotation, which mask within radial velocity transit data sets. The few that have been discovered in clusters generally orbit too faint for any detailed follow-up analysis. Here, we present characterization a new mini-Neptune bright (V = ...

We report the analysis of planetary microlensing event OGLE-2018-BLG-1185, which was observed by a large number ground-based telescopes and $Spitzer$ Space Telescope. The light curve indicates low planet-host star mass ratio $q = (6.9 \pm 0.2) \times 10^{-5}$, is near peak wide-orbit exoplanet mass-ratio distribution. estimate host planet masses with Bayesian using measured angular Einstein rad...