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Possible chromospheric activity cycles in AD Leo
Andrea P. Buccino, Romina Petrucci, Emiliano Jofré +1
AD Leo (GJ 388) is an active dM3 flare star extensively observed both in the quiescent and flaring states. Since this active star is near the fully-convective boundary, to study in…
No Transit Timing Variations in WASP-4
R. Petrucci, E. Jofré, M. Schwartz +5
We present 6 new transits of the system WASP-4. Together with 28 light curves published in the literature, we perform an homogeneous study of its parameters and search for variatio…
High Stellar FUV/NUV Ratio and Oxygen Contents in the Atmospheres of Potentially Habitable Planets
Feng Tian, Kevin France, Jeffrey L. Linsky +2
Recent observations of several planet-hosting M dwarfs show that most have FUV/NUV flux ratios 1000 times greater than that of the Sun. Here we show that the atmospheric oxygen con…