Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Lehmann Holger"'
Autor:
Karjalainen, Marie, Karjalainen, Raine, Hatzes, Artie P., Lehmann, Holger, Kervella, Pierre, Hekker, Saskia, Van Winckel, Hans, Überlauer, Jakub, Vítková, Michaela, Skarka, Marek, Kabáth, Petr, Prins, Saskia, Tkachenko, Andrew, Cochran, William D., Jorissen, Alain
Publikováno v:
A&A 668, A26 (2022)
Context. Our knowledge of populations and occurrence of planets orbiting evolved intermediate-mass stars is still incomplete. In 2010 we started a planet-search program among 95 giant stars observed by the Kepler mission to increase the sample of gia
Externí odkaz:
http://arxiv.org/abs/2209.11096
Autor:
Holdsworth Daniel L., Kurtz Donald W., Smalley Barry, Saio Hideyuki, Handler Gerald, Murphy Simon J., Lehmann Holger
Publikováno v:
EPJ Web of Conferences, Vol 160, p 03004 (2017)
We present an analysis of the first K2 observations of a rapidly oscillating Ap (roAp) star, HD 24355. The star was discovered to be a roAp star by [1], with a frequency of 224.31 d-1 (2596.18 μHz; P = 6.4 min) and an amplitude of 1.51 mmag in Super
Externí odkaz:
https://doaj.org/article/41fb5e04e449404580ffe663d07d2978
The analysis of the wavelength-dependent albedo of exoplanets represents a direct way to provide insight of their atmospheric composition and to constrain theoretical planetary atmosphere modelling. Wavelength-dependent albedo can be inferred from th
Externí odkaz:
http://arxiv.org/abs/1908.10605
Autor:
Holdsworth, Daniel L., Kurtz, Donald W., Smalley, Barry, Saio, Hideyuki, Handler, Gerald, Murphy, Simon J., Lehmann, Holger
We present an analysis of the first Kepler K2 mission observations of a rapidly oscillating Ap (roAp) star, HD 24355 ($V=9.65$). The star was discovered in SuperWASP broadband photometry with a frequency of 224.31 d$^{-1}$, (2596.18 $\mu$Hz; $P = 6.4
Externí odkaz:
http://arxiv.org/abs/1607.03853
Eclipsing binary systems with pulsating components allow the determination of several physical parameters of the stars, such as mass and radius, that, when combined with the pulsation properties, can be used to constrain the modeling of stellar inter
Externí odkaz:
http://arxiv.org/abs/1403.3003
Ground-based spectroscopic follow-up observations of the pulsating stars observed by the Kepler satellite mission are needed for their asteroseismic modelling. We aim to derive the fundamental parameters for a sample of 26 Gamma Doradus candidate sta
Externí odkaz:
http://arxiv.org/abs/1202.1116
Autor:
Uttenthaler, Stefan, Van Stiphout, Koen, Voet, Kevin, Van Winckel, Hans, Van Eck, Sophie, Jorissen, Alain, Kerschbaum, Franz, Raskin, Gert, Prins, Saskia, Pessemier, Wim, Waelkens, Christoffel, Frémat, Yves, Hensberge, Herman, Dumortier, Louis, Lehmann, Holger
Context: Miras are long-period variables thought to be in the asymptotic giant branch (AGB) phase of evolution. In about one percent of known Miras, the pulsation period is changing. It has been speculated that this changing period is the consequence
Externí odkaz:
http://arxiv.org/abs/1105.2198
Autor:
Wright, Duncan, Chené, André-Nicolas, De Cat, Peter, Marois, Christian, Mathias, Philippe, Macintosh, Bruce, Isaacs, Josh, Lehmann, Holger, Hartmann, Michael
Direct imaging of the HR8799 system was a major achievement in the study of exoplanets. HR8799 is a $\gamma$\,Doradus variable and asteroseismology can provide an independent constraint on the inclination. Using 650 high signal-to-noise, high resolut
Externí odkaz:
http://arxiv.org/abs/1101.1590
Autor:
Raskin, Gert, Van Winckel, Hans, Hensberge, Herman, Jorissen, Alain, Lehmann, Holger, Waelkens, Christoffel, Avila, Gerardo, De Cuyper, Jean-Pierre, Degroote, Pieter, Dubosson, Rene, Dumortier, Louis, Fremat, Yves, Laux, Uwe, Michaud, Bernard, Morren, Johan, Padilla, Jesus Perez, Pessemier, Wim, Prins, Saskia, Smolders, Kristof, Van Eck, Sophie, Winkler, Johannes
The HERMES high-resolution spectrograph project aims at exploiting the specific potential of small but flexible telescopes in observational astrophysics. The optimised optical design of the spectrograph is based on the well-proven concept of white-pu
Externí odkaz:
http://arxiv.org/abs/1011.0258
Autor:
Lehmann, Holger, Gossrau, Felix
Südasien, Bd. 26 Nr. 1 (2006): Großer Sprung nach vorn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68d9b964a242b6a4adce2501529f8041