# Hunting for Stellar Coronal Mass Ejections

@article{Korhonen2016HuntingFS,
title={Hunting for Stellar Coronal Mass Ejections},
author={Heidi Korhonen and Kriszti{\'a}n Vida and Martin Leitzinger and Petra Odert and Orsolya Eszter Kov{\'a}cs},
journal={Proceedings of the International Astronomical Union},
year={2016},
volume={12},
pages={198 - 203}
}
• Published 1 October 2016
• Physics
• Proceedings of the International Astronomical Union
Abstract Coronal mass ejections (CMEs) are explosive events that occur basically daily on the Sun. It is thought that these events play a crucial role in the angular momentum and mass loss of late-type stars, and also shape the environment in which planets form and live. Stellar CMEs can be detected in optical spectra in the Balmer lines, especially in Hα, as blue-shifted extra emission/absorption. To increase the detection probability one can monitor young open clusters, in which the stars are…
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## References

SHOWING 1-10 OF 13 REFERENCES
A search for flares and mass ejections on young late-type stars in the open cluster Blanco-1
• Physics
• 2014
We present a search for stellar activity (flares and mass ejections) in a sample of 28 stars in the young open cluster Blanco-1. We use optical spectra obtained with ESO's VIMOS multi-object
Connecting Flares and Transient Mass Loss Events in Magnetically Active Stars
• Physics, Geology
• 2015
We explore the ramification of associating the energetics of extreme mag- netic reconnection events with transient mass loss in a stellar analogy with solar eruptive events. We establish energy
Search for indications of stellar mass ejections using FUV spectra
• Physics
• 2011
Aims. We search for highly energetic activity phenomena in a small sample of late-type main-sequence stars in the far ultraviolet (FUV) using data from the Far Ultraviolet Spectroscopic Explorer
Stellar flares and the dark energy of CMEs
• Physics
Proceedings of the International Astronomical Union
• 2015
Abstract Flares we observe on stars in white light, UV or soft X-rays are probably harbingers of coronal mass ejections (CMEs). If we use the Sun as a guide, large stellar flares will dissipate two
Implications of mass and energy loss due to coronal mass ejections on magnetically-active stars
• Physics
• 2013
Analysis of a database of solar coronal mass ejections (CMEs) and associated flares over the period 1996-2007 finds well-behaved power law relationships between the 1-8 AA flare X-ray fluence and CME
MASS LOSS IN PRE-MAIN-SEQUENCE STARS VIA CORONAL MASS EJECTIONS AND IMPLICATIONS FOR ANGULAR MOMENTUM LOSS
• Physics
• 2012
We develop an empirical model to estimate mass-loss rates via coronal mass ejections (CMEs) for solar-type pre-main-sequence (PMS) stars. Our method estimates the CME mass-loss rate from the observed
Coronal mass ejection (CME) activity of low mass M stars as an important factor for the habitability of terrestrial exoplanets. II. CME-induced ion pick up of Earth-like exoplanets in close-in habitable zones.
• Physics, Geology
Astrobiology
• 2007
It is suggested that larger and more massive terrestrial-type exoplanets may better protect their atmospheres against CMEs, because the larger cores of such exoplanet would generate stronger magnetic moments and their higher gravitational acceleration would constrain the expansion of their thermosphere-exosphere regions and reduce atmospheric escape.
Multiwavelength Signatures of Magnetic Activity from Young Stellar Objects in the LkHα 101 Cluster
• Physics
• 2009
We describe the results of our multiwavelength observing campaign on the young stellar objects in the LkHα 101 cluster. Our simultaneous X-ray and multifrequency radio observations are unique in
Investigating magnetic activity in very stable stellar magnetic fields: long-term photometric and spectroscopic study of the fully convective M4 dwarf V374 Peg
• Physics
• 2016
The ultrafast-rotating ($P_\mathrm{rot}\approx0.44 d$) fully convective single M4 dwarf V374 Peg is a well-known laboratory for studying intense stellar activity in a stable magnetic topology. As an
Different Power-law Indices in the Frequency Distributions of Flares with and without Coronal Mass Ejections
• Physics
• 2006
We investigated the frequency distributions of flares with and without coronal mass ejections (CMEs) as a function of flare parameters (peak flux, fluence, and duration of soft X-ray flares). We used