Phytoplankton Community Responses to Interactions Between Light Intensity, Light Variations, and Phosphorus Supply

Autor: Vanessa Marzetz, Elly Spijkerman, Maren Striebel, Alexander Wacker

Publikováno v: Frontiers in Environmental Science, Vol 8 (2020)

In a changing world, phytoplankton communities face a large variety of challenges including altered light regimes. These alterations are caused by more pronounced stratification due to rising temperatures, enhanced eutrophication, and browning of lak

Externí odkaz: https://doaj.org/article/e953bb68086f488c9298cef9b141d012

HD 60431, the CP2 star with the shortest rotational period

Autor: Mikulasek, Z., Semenko, E., Paunzen, E., Huemmerich, S., North, P. L., Bernhard, K., Krticka, J., Janik, J.

Publikováno v: Astronomy & Astrophysics. 668:A159

CP2 stars show periodic photometric, spectroscopic, and magnetic variations with the rotational period. They are generally slow rotators, with rotational periods exceeding half a day, except for the late B-type star HD 60431, which has an unusually s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c52e0f8a0317da3ce9bc6c48f71c6a1d
https://doi.org/10.1051/0004-6361/202243622

A new study of time variability of the Be star LQ And

Autor: Lipták, Jozef

We contradict binary nature of LQ And. Radial velocities of Hα emision are bound to changes less than 2 km/s. We were not able to detect any periodic variability in radial velocities of core and wings of Hα emision nor of line He I 6678 Å. We disc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2186::913182b45bbe7582d771e938f6ddf23f
http://www.nusl.cz/ntk/nusl-434104

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MOBSTER - II. Identification of rotationally variable A stars observed with TESS in sectors 1-4

Autor: Ernst Paunzen, James Sikora, Oleh Kobzar, Coralie Neiner, Alexandre David-Uraz, Gregg A. Wade, S. Chowdhury, Oleg Kochukhov, Viktor Khalack, Dominic M. Bowman

Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2019, 487 (4), pp.4695-4710. ⟨10.1093/mnras/stz1581⟩

Recently, high-precision optical 2~min cadence light curves obtained with \emph{TESS} for targets located in the mission's defined first four sectors have been released. The majority of these high-cadence and high-precision measurements currently spa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c676349e41175cd48ef2a63484cc6846
https://lirias.kuleuven.be/handle/123456789/641285