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http://hdl.handle.net/20.500.12386/34947
Titolo: | Analysis of the chromosphere and corona of low-activity early-M dwarfs | Autori: | SCANDARIATO, GAETANO González Álvarez, E. MALDONADO PRADO, Jesus Suárez Mascareño, A. Perger, M. |
Data pubblicazione: | 2020 | Curatore/i del volume in cui è pubblicato il contributo: | Kosovichev, A., Strassmeier, K., Jardine, M. | Serie: | PROCEEDINGS OF THE INTERNATIONAL ASTRONOMICAL UNION | Numero: | 354 | Da pagina:: | 355 | Abstract: | While most of the exoplanets have been found orbiting around solar-type stars, low-mass stars have recently been recognized as ideal exo-life laboratory. Currently, stellar activity is one of the limiting factors for the characterization of Earth-twins and for assessing their habitability: understanding the activity of M dwarfs is thus crucial. In this contribution I present the spectroscopic analysis of the quiet early-M dwarfs monitored within the HADES (HArps-n red Dwarf Exoplanet Survey) radial velocity survey. The spectra allow us to analyze simultaneously the Ca ii H&K doublet and the Hydrogen Balmer series, while the intensive follow up gives us a large number of spectra ( 100) for each target. We complement this dataset with ground-based follow-up photometry and archival X-ray data. I present our results on the activity-rotation-stellar parameters and flux-flux relationships, and discuss the correlation of emission fluxes at low activity levels and the evolution timescales of active regions. | Titolo del convegno: | Solar and Stellar Magnetic Fields: Origins and Manifestations | Luogo del convegno: | Copiapo, Chile | Periodo del convegno: | 30 June-6 July, 2019 | URI: | http://hdl.handle.net/20.500.12386/34947 | URL: | https://www.cambridge.org/core/journals/proceedings-of-the-international-astronomical-union/article/analysis-of-the-chromosphere-and-corona-of-lowactivity-earlym-dwarfs/3AB913B612E555CE96EDCFAD11A8B2A0 https://api.elsevier.com/content/abstract/scopus_id/85092733698 |
ISSN: | 1743-9213 | DOI: | 10.1017/S1743921319009931 | Bibcode ADS: | 2020IAUS..354..355S | Fulltext: | open |
È visualizzato nelle collezioni: | 3.01 Contributi in Atti di convegno |
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