Gas giant planets with periods $20~\lt ~P~\lt ~300~\rm d$ orbiting Sun-like stars are a relatively uncommon outcome of planetary formation, and key questions about the nature and formation of this subpopulation remain unanswered. Theoretical models for the location of their formation (in situ or ex situ) and for their subsequent migration predict

We report the discovery and characterization of the multiplanetary system around TOI-4311, a K dwarf kinematically between the Galactic thick disc and Hercules stream. TOI-4311 hosts an ultra-short-period super-Earth (P $\sim$0.99 d, $1.376^{+0.077}_{-0.080}$ R $_{\oplus }$) and a longer period sub-Neptune (P $\sim$15 d, $2.47^{+0.12}_{-0.11}$ R $_

Context. The origin of the highly ionized iron emission (Fe XXV at 6.7 keV) characterizing Galactic ridge X-ray emission (GRXE) remains a fundamental piece of the puzzle in high-energy astrophysics. Although the GRXE continuum was largely resolved into discrete populations of cataclysmic variables and coronally active stars, subsequent measurements

We present the TESS-based discoveries of planetary systems orbiting the late G dwarfs TOI-2494 and TOI-5143, each of which harbors a hot giant planet and a smaller interior planet. TOI-2494 hosts a transiting mini-Neptune (P = 2.41 days, R P = 2.3 5 − 0.15 + 0.16 R ⊕) and a hot Saturn (P = 8.38 days) with grazing transits, while TOI-5143 hosts a

We present a catalog of 500 galaxy cluster candidates in the SPT-Deep field: a 100 deg 2 field that combines data from the SPT-3G and SPTpol surveys to reach noise levels of 3.0, 2.2, and 9.0 μK-arcmin at 95, 150, and 220 GHz, respectively. Candidates are selected via the thermal Sunyaev─Zel'dovich (SZ) effect with a minimum significance of ξ = 4.0

Near-ultraviolet (NUV) measurements of exoplanet transits offer a means to probe atmospheric escape, cloud formation, and planetary magnetic fields. We examine a 2024 XMM-Newton Optical Monitor NUV observation of the transit of XO-3 b, a massive hot Jupiter on an eccentric orbit with a previously observed abnormally large NUV-absorbing atmosphere