activity
20002026
most citedThe Origin of T Tauri X-ray Emission: New Insights from the Chandra Orion Ultradeep Project

534 citations · 3.9k across the 80 of their papers we have counts for

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Showing 2020Show all

7 papers · 1 filter

astro-ph.EP2020★ 10 cited

GJ 357 b: A Super-Earth Orbiting an Extremely Inactive Host Star

D. Modirrousta-Galian, B. Stelzer, E. Magaudda +5

In this paper we present a deep X-ray observation of the nearby M dwarf GJ 357 and use it to put constraints on the atmospheric evolution of its planet, GJ 357 b. We also analyse t…

astro-ph.SR2020★ 5 cited

ISO-ChaI 52: a weakly-accreting young stellar object with a dipper light curve

A. Frasca, C. F. Manara, J. M. Alcalá +6

We report on the discovery of periodic dips in the multiband lightcurve of ISO-ChaI 52, a young stellar object in the Chamaeleon I dark cloud. This is one among the peculiar object…

astro-ph.SR2020★ 91 cited

Relation of X-ray activity and rotation in M dwarfs and predicted time-evolution of the X-ray luminosity

E. Magaudda, B. Stelzer, K. R. Covey +3

We present a sample of 14 M dwarf stars observed with XMM-Newton and Chandra, for which we also computed rotational periods from Kepler Two-Wheel (K2) Mission light curves. We comp…

astro-ph.SR2020★ 12 cited

Discovery of new members of the nearby young stellar association in Cepheus

A. Klutsch, A. Frasca, P. Guillout +4

Young field stars are hardly distinguishable from older ones because their space motion rapidly mixes them with the stellar population of the Galactic plane. Nevertheless, a carefu…

astro-ph.SR2020★ 50 cited

Rotation-activity relations and flares of M dwarfs with K2 long- and short-cadence data

St. Raetz, B. Stelzer, M. Damasso +1

Using light curves obtained by the K2 mission, we study the relation between stellar rotation and magnetic activity with special focus on stellar flares. Our sample comprises 56 br…

astro-ph.SR2020★ 54 cited

An X-ray activity cycle on the young solar-like star

M. Coffaro, B. Stelzer, S. Orlando +7

In 2015 we started the XMM-Newton monitoring of the young solar-like star Epsilon Eridani (440 Myr), one of the youngest solar-like stars with a known chromospheric CaII cycle. By…