Phosphorus is difficult to study in the optical because useful P lines are scarce or absent in many cool stars. WINERED spectra in the Y and J bands provide access to multiple P I lines, allowing internally checked abund...
Recent observational studies have suggested that the Sun may be chemically peculiar relative to the majority of solar twins. Here, we re-analyse high-resolution, high signal-to-noise spectra of 79 nearby, non-co-natal so...
Solar activity cycles (e.g., the 11-year cycle) are well established, and similar cycles are observed in many active stars. The time baseline of TESS photometry enables the search for shorter, multi-year stellar activity...
TOI-2155b is a massive transiting companion discovered using observations from NASA's TESS mission and confirmed with radial velocity measurements from the TRES spectrograph. Additional photometric observations were obta...
Highlights: Mo doping increases oxygen vacancies and improves CO2 surface activation.MICROSCAFS ପ୍ପ support enhances charge separation and light harvesting. Mo-CeO 2 shows the highest CO 2 photoreduction efficiency amon...
Published June 3, 2026 | Version v1 Poster Open Magnetic activity of KIC 2852961–Revisiting the superflaring red giant in the Kepler field Authors/Creators Kővári, Zsolt1, 2 Seli, Bálint1, 2 Oláh, Katalin1, 2 ...
We present results from quasi-simultaneous, broadband (1 through 50 GHz), full-polarization, multi-epoch JVLA observations of the fast-rotating ultracool dwarf (UCD) LSR J1835+3259 (=LSRJ; P_rot = 2.84 hr), aimed at clar...
