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chromospheric activity (464) 464
astronomy & astrophysics (461) 461
astrophysics (197) 197
astrophysics - solar and stellar astrophysics (179) 179
stars: activity (176) 176
physics - solar and stellar astrophysics (159) 159
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techniques: radial velocities (24) 24
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search (23) 23
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active stars (18) 18
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Astronomy and Astrophysics, ISSN 0004-6361, 08/2018, Volume 616
Context. Chromospheric activity monitoring of a wide range of cool stars can provide valuable information on stellar magnetic activity and its dependence on... 
Effective temperatures | Cool stars | Chromospheric activity | Dependence | Main sequence stars | Stellar rotation | Rotation
Journal Article
Astronomy and Astrophysics, ISSN 0004-6361, 2009, Volume 501, Issue 3, pp. L27 - L30
Aims. During the solar minimum of 2008, the value of total solar irradiance at 1 AU (TSI) was more than 0.2Wm(-2) lower than during the last minimum in 1996,... 
Sun: photosphere | Sun: activity | Sun: UV radiation | Sun: faculae, plages | Sunspots | Sun: magnetic fields | CHROMOSPHERIC ACTIVITY | RECONSTRUCTION | CYCLES 21-23 | ATMOSPHERE | VARIABILITY | FACULAE | ASTRONOMY & ASTROPHYSICS | MAUNDER MINIMUM | STARS | MAGNETIC-FIELD | sunspots | CLIMATE
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 10/2010, Volume 407, Issue 4, pp. 2269 - 2286
Journal Article
ASTRONOMICAL JOURNAL, ISSN 0004-6256, 06/2019, Volume 157, Issue 6, p. 234
Young, low-mass stars in the solar neighborhood are vital for completing the mass function for nearby, young coeval groups, establishing a more complete census... 
CHROMOSPHERIC ACTIVITY | M-DWARFS | COOL NEIGHBORS | BROWN DWARFS | ASTRONOMY & ASTROPHYSICS | LITHIUM DEPLETION | stars: low-mass | T-TAURI STARS | BETA-PICTORIS | SKY SURVEY | SPECTROSCOPIC SURVEY | ETA-CHAMAELEONTIS
Journal Article
by Reiners, A and Zechmeister, M and Caballero, J.A and Ribas, I and Morales, J.C and Jeffers, S.V and Schöfer, P and Tal-Or, L and Quirrenbach, A and Amado, P.J and Kaminski, A and Seifert, W and Abril, M and Aceituno, J and Alonso-Floriano, F.J and Ammler-Von Eiff, M and Antona, R and Anglada-Escudé, G and Anwand-Heerwart, H and Arroyo-Torres, B and Azzaro, M and Baroch, D and Barrado, D and Bauer, F.F and Becerril, S and Béjar, V.J.S and Benítez, D and Berdinas, Z.M and Bergond, G and Blümcke, M and Brinkmöller, M and Del Burgo, C and Cano, J and Cárdenas Vázquez, M.C and Casal, E and Cifuentes, C and Claret, A and Colomé, J and Cortés-Contreras, M and Czesla, S and Díez-Alonso, E and Dreizler, S and Feiz, C and Fernández, M and Ferro, I.M and Fuhrmeister, B and Galadí-Enríquez, D and Garcia-Piquer, A and García Vargas, M.L and Gesa, L and Galera, V. Gómez and González Hernández, J.I and González-Peinado, R and Grözinger, U and Grohnert, S and Guàrdia, J and Guenther, E.W and Guijarro, A and Guindos, E. De and Gutiérrez-Soto, J and Hagen, H.-J and Hatzes, A.P and Hauschildt, P.H and Hedrosa, R.P and Helmling, J and Henning, Th and Hermelo, I and Hernández Arabí, R and Hernández Castaño, L and Hernández Hernando, F and Herrero, E and Huber, A and Huke, P and Johnson, E.N and Juan, E. De and Kim, M and Klein, R and Klüter, J and Klutsch, A and Kürster, M and Lafarga, M and Lamert, A and Lampón, M and Lara, L.M and Laun, W and Lemke, U and Lenzen, R and Launhardt, R and López Del Fresno, M and López-González, J and López-Puertas, M and López Salas, J.F and López-Santiago, J and Luque, R and Magán Madinabeitia, H and Mall, U and Mancini, L and Mandel, H and Marfil, E and Marín Molina, J.A and ...
Astronomy and Astrophysics, ISSN 0004-6361, 04/2018, Volume 612, p. A49
The CARMENES radial velocity (RV) survey is observing 324 M dwarfs to search for any orbiting planets. In this paper, we present the survey sample by... 
Stars: late-type | Infrared: stars | Catalogs | Stars: low-mass | Atlases | Stars: rotation | ROTATION | PLANETS | CHROMOSPHERIC ACTIVITY | LOW-MASS STARS | infrared: stars | NOISE | METALLICITY | PRECISION | COINCIDENT | stars: late-type | ASAS PHOTOMETRY | catalogs | ASTRONOMY & ASTROPHYSICS | atlases | SEQUENCE | stars: low-mass | stars: rotation
Journal Article
Astronomy and Astrophysics, ISSN 0004-6361, 12/2018, Volume 620
Context. The detection of chromospheric activity cycles in solar-analogue and twin stars can be used to place the solar cycle in a wider context. However,... 
Balmer lines | Analogue | H alpha line | Iron | Fluxes | Periodicities | Velocity | Chromospheric activity | Radial velocity | K lines | Line spectra | Solar cycle | Stellar activity
Journal Article
Astronomy and Astrophysics, ISSN 0004-6361, 04/2018, Volume 612
We aim to investigate the presence of signatures of magnetic cycles and rotation on a sample of 71 early M-dwarfs from the HADES RV programme using... 
Spectroscopy | Correlation | Amplitudes | Stars | Rotation | Velocity | Planets | Chromospheric activity | Spectrum analysis | Cross correlation | Emission measurements | Correlation function | Stellar rotation | Radial velocity | Photometry
Journal Article
Astronomy and Astrophysics, ISSN 0004-6361, 04/2018, Volume 612
We report the discovery of a system of two super-Earths orbiting the moderately active K-dwarf HD 176986. This work is part of the RoPES RV program of G- and... 
Terrestrial planets | Extrasolar planets | Terrestrial environments | Orbits | Rotation | Planets | Spectrographs | Planet detection | Chromospheric activity | Stellar rotation | Stellar activity | Earth orbits | Planetary rotation
Journal Article
ASTRONOMY & ASTROPHYSICS, ISSN 1432-0746, 08/2019, Volume 628, p. A125
Context. The effect of stellar activity on radial velocity (RV) measurements appears to be a limiting factor in detecting Earth-mass planets in the habitable... 
ROTATION | CHROMOSPHERIC ACTIVITY | techniques: radial velocities | Sun: granulation | COOL STARS | MAIN-SEQUENCE | convection | MAGNETIC ACTIVITY | stars: magnetic field | stars: solar-type | CALIFORNIA | ASTRONOMY & ASTROPHYSICS | stars: activity | OSCILLATIONS
Journal Article