Suchergebnisse

Zeitschriftenartikel (15)

1.
Zeitschriftenartikel
Kochukhov, O.; Hackman, T.; Lehtinen, J.; Wehrhahn, A.: Hidden magnetic fields of young suns. Astronomy and Astrophysics 635, A142 (2020)
2.
Zeitschriftenartikel
Lehtinen, J.; Käpylä, M. J.; Olspert,, N.; Spada, F.: A Knee-Point in the Rotation-Activity Scaling of Late-type Stars with a Connection to Dynamo Transitions. (eingereicht)
3.
Zeitschriftenartikel
Lehtinen, J.; Spada, F.; Käpylä, M. J.; Olspert, N.; Käpylä, P. J.: Common dynamo scaling in slowly rotating young and evolved stars. Nature astronomy 4, S. 658 - 662 (2020)
4.
Zeitschriftenartikel
Willamo, T.; Hackman, T.; Lehtinen, J.; Käpylä, M. J.; Olspert, N.; Viviani, M.; Warnecke, J.: Shapes of stellar activity cycles. Astrophysics & Astronomy 638, A69 (2020)
5.
Zeitschriftenartikel
Cole-Kodikara, E. M.; Käpylä, M. J.; Lehtinen, J.; Hackman, T.; Ilyin, I. V.; Piskunov, N.; Kochukhov, O.: Spot evolution on LQ Hya from 2006–2017: temperature maps based on SOFIN and FIES data. Astronomy and Astrophysics 629, A120 (2019)
6.
Zeitschriftenartikel
Hackman, T.; Ilyin, I.; Lehtinen, J.; Kochukhov, O.; Käpylä, M. J.; Piskunov, N.; Willamo, T.: Starspot activity of HD199178: Doppler images from 1994-2017. Astronomy and Astrophysics 625, A79 (2019)
7.
Zeitschriftenartikel
Hackman, T.; Ilyin, I.; Lehtinen, J.; Kochukhov, O.; Käpylä, M. J.; Piskunov, N.; Willamo, T.: Starspot activity of HD 199178: Doppler images from 1994-2017. Astronomy and Astrophysics 625, A79 (2019)
8.
Zeitschriftenartikel
Willamo, T.; Hackman, T.; Lehtinen, J.; Käpylä, M. J.; Ilyin, I.; Henry, G. W.; Jetsu, L.; Kochukhov, O.; Piskunov, N.: Long-term spot monitoring of the young solar analogue V889 Herculis. Astronomy and Astrophysics 622, A170 (2019)
9.
Zeitschriftenartikel
Olspert, N.; Lehtinen, J.; Käpylä, M. J.; Pelt, J.; Grigorievskiy, A.: Estimating activity cycles with probabilistic methods: II. The Mount Wilson Ca H&K data. Astronomy and Astrophysics 619, A6 (2018)
10.
Zeitschriftenartikel
Olspert, N.; Pelt, J.; Käpylä, M. J.; Lehtinen, J.: Estimating activity cycles with probabilistic methods: I. Bayesian generalised Lomb-Scargle periodogram with trend. Astronomy and Astrophysics 615, A111 (2018)
11.
Zeitschriftenartikel
Porceddu, S.; Jetsu, L.; Markkanen, T.; Lyytinen, J.; Kajatkari, P.; Lehtinen, J.; Toivari-Viitala, J.: Algol as Horus in the Cairo Calendar: The Possible Means and the Motives of the Observations. Open Astronomy 27 (1), S. 232 - 263 (2018)
12.
Zeitschriftenartikel
Viviani, M.; Warnecke, J.; Käpylä, M. J.; Käpylä, P. J.; Olspert, N.; Cole-Kodikara, E. M.; Lehtinen, J.; Brandenburg, A.: Transition from axi- to nonaxisymmetric dynamo modes in spherical convection models of solar-like stars. Astronomy and Astrophysics 616, A 160 (2018)
13.
Zeitschriftenartikel
Fabbian, D.; Simoniello, R.; Collet, R.; Criscuoli, S.; Korhonen, H.; Krivova, N. A.; Olah, K.; Jouve, L.; Solanki, S. K.; Alvarado-Gomez, J. D. et al.; Booth, R.; Garcia, R. A.; Lehtinen, J.; See, V.: The variability of magnetic activity in solar-type stars. Astron. Nachrichten 338 (7), S. 753 - 772 (2017)
14.
Zeitschriftenartikel
Jetsu, L.; Henry, G. W.; Lehtinen, J.: General Model for Light Curves of Chromospherically Active Binary Stars. Astrophysical Journal 838, 122 (2017)
15.
Zeitschriftenartikel
Pedersen, M. G.; Antoci, V.; Korhonen, H.; White, T. R.; Jessen-Hansen, J.; Lehtinen, J.; Nikbakhsh, S.; Viuho, J.: Do A-type stars flare? Mon. Not. Roy. Astron. Soc. 466, S. 3060 - 3076 (2017)

Vortrag (1)

16.
Vortrag
Lehtinen, J.: Active Longitudes And What Do We Really Know About Them. Cool Stars 20, Boston, Cambridge, USA (2018)

Poster (2)

17.
Poster
Lehtinen, J.: Active longitudes and what do we really know about them. Cool Stars 20, Boston, Cambridge, USA (2018)
18.
Poster
Lehtinen, J.: Doppler imaging active longitudes at the Nordic Optical Telescope. IAU Symposia 340: Long-term datasets for the understanding of solar and stellar magnetic cycles, Jaipur, India (2018)
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