Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Jan Bernkopf"'
Autor:
Holger Drass, Roland Lemke, Klaus Fuhrmann, T. Dembsky, Rolf Chini, Leif-Sören Buda, Jan Bernkopf
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 425:1308-1311
We present a consistent model atmosphere analysis and evolutionary tracks for the very nearby G-type star 82 Eri that was most recently announced by Pepe et al. to harbour two or three super-Earth companions with orbital periods of 18, 40 and 90 d. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0817842331fea92af5ceac45688b27ad
https://doi.org/10.1111/j.1365-2966.2012.21534.x
https://doi.org/10.1111/j.1365-2966.2012.21534.x
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 420:1423-1428
The stars of the solar neighbourhood essentially originate from two stellar populations: Population I (the thin disc) and Population II (the thick disc). Recently, we completed an unbiased sample of long-lived solar-type stars and demonstrated that t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2d9e4862be35fdd4ecd24e69630fd2b
https://doi.org/10.1111/j.1365-2966.2011.20127.x
https://doi.org/10.1111/j.1365-2966.2011.20127.x
Autor:
Ritesh Tipnis, Jan Bernkopf, Shijun Jia, John Krieg, Sergey Li, Darin W. Laird, Mark L. Storch
Publikováno v:
Solar Energy Materials and Solar Cells. 93:442-446
Here we describe the fabrication of the largest (233 cm 2 total area) organic photovoltaic (OPV) module (polymer:fullerene) to be certified by the National Renewable Energy Laboratory (NREL). OPV solar cells were fabricated at Plextronics by spin coa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7937d201e9a2ee3f336aaf35607323c3
https://doi.org/10.1016/j.solmat.2008.11.018
https://doi.org/10.1016/j.solmat.2008.11.018
Autor:
Klaus Fuhrmann, Jan Bernkopf
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 384:1563-1566
The nearby subgiant HD 155358 has very recently been announced by Cochran et al. to harbour two Jovian-mass planetary companions and to be the lowest metallicity exoplanet host star yet found. Here, we present a model atmosphere analysis and stellar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5deedf1bb96b07f8b304495232a02a35
https://doi.org/10.1111/j.1365-2966.2007.12806.x
https://doi.org/10.1111/j.1365-2966.2007.12806.x
Autor:
Jan Bernkopf, Klaus Fuhrmann
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 369:673-676
Detailed evolutionary tracks and basic stellar parameters for the nearby subgiants 104 Tau and HD 168443 are presented and discussed. Both serve as invaluable key stars for accurate age-datings, especially as they possess the chemical signatures inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf722d48d4235e3248436d75f2166192
https://doi.org/10.1111/j.1365-2966.2006.10326.x
https://doi.org/10.1111/j.1365-2966.2006.10326.x
Autor:
Shijun Jia, John Krieg, Sergey Li, Shawn P. Williams, Darin W. Laird, Jan Bernkopf, Jessica Benson-Smith
Publikováno v:
SPIE Proceedings.
Large area organic photovoltaic modules have been fabricated with 232.8 cm 2 of total area with 108 cm 2 of photoactive area. Efficiencies up to 2.3% by active area (1.1% by total area) demonstrate operation of a multicell module with configurable vo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a7fc01c4da9537dead027415738b181
https://doi.org/10.1117/12.799602
https://doi.org/10.1117/12.799602
Publikováno v:
SCORe ’96: Solar Convection and Oscillations and their Relationship ISBN: 9789401061728
The Garching stellar evolution code has been modified to allow the calculation of an up-to-date solar model. The modifications are of numerical and physical nature. Concerning the first aspect, the spatial as well as the temporal discretization of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f17313fdf7edc3004014477c1f33f2b8
https://doi.org/10.1007/978-94-011-5167-2_6
https://doi.org/10.1007/978-94-011-5167-2_6
Publikováno v:
The Astrophysical Journal. 761:159
We report on the bright and late F-type star HR 3138, which, with respect to its chemistry in the [Mg/H]-[Fe/Mg] abundance plane, we identify as an old Population II member. Evolutionary tracks are, however, in conflict with this finding and instead
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2030b303ca7779e2963bf7bc9289de0
https://doi.org/10.1088/0004-637x/761/2/159
https://doi.org/10.1088/0004-637x/761/2/159
Autor:
Patrick Mullen, Jan Bernkopf
This document presents the results of the development of a low voltage, high resistivity, dyed Polymer Dispersed Liquid Crystal (PDLC) for use in direct view displays. Several methods for improving various PDLC characteristics are described. The opti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2a215dda19022397bf335fb154be263
https://doi.org/10.21236/ada291946
https://doi.org/10.21236/ada291946
Autor:
Ritesh Tipnis, John Krieg, Shijun Jia, Sergey Li, Mark L. Storch, Jan Bernkopf, Darin W. Laird
Publikováno v:
Solar Energy Materials and Solar Cells. 93:1457
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b49008c415b2b4736446465ad5419f6
https://doi.org/10.1016/j.solmat.2009.03.017
https://doi.org/10.1016/j.solmat.2009.03.017