Zobrazeno 1 - 10
of 69
pro vyhledávání: '"L. Crause"'
Autor:
P. De Cat, L. A. Balona, Giovanni Catanzaro, K. Uytterhoeven, L. Crause, Davide Gandolfi, Petr Kabath, Margarida S. Cunha, A. P. Hatzes
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 432:2808-2817
KIC 8677585 is a roAp star in the Kepler field which is unique in that there are four lowfrequency variations of unknown origin in addition to more than twenty high-frequency roAp modes. We analysed all available spectroscopy and conclude that the st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::779a4274d7cfb6d49f8cb93265758baf
https://doi.org/10.1093/mnras/stt636
https://doi.org/10.1093/mnras/stt636
Autor:
T. B. Williams, Helge Todt, Guy S. Stringfellow, Eva K. Grebel, Amanda A. S. Gulbis, A. Kniazev, J. B. Haislip, Donal O'Donoghue, Petri Väisänen, T. O. Husser, Norbert Langer, Eric J. Hooper, Kenneth H. Nordsieck, Daniel E. Reichart, D. A. H. Buckley, Marsha J. Wolf, Melissa C. Nysewander, P. Kotze, E. Romero Colmenero, K. M. Ivarsen, Christian Hettlage, L. N. Berdnikov, Steven M. Crawford, Vasilii V. Gvaramadze, S. B. Potter, T. E. Pickering, Wolf-Rainer Hamann, Aaron P. LaCluyze, N. S. Loaring, L. Crause, Anatoly S. Miroshnichenko
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 421:3325-3337
We report the discovery of two new Galactic candidate luminous blue variable (LBV) stars via detection of circular shells (typical of confirmed and candidate LBVs) and follow-up spectroscopy of their central stars. The shells were detected at 22 µm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa404b3665db8e3d368a4e96a5397ff1
https://doi.org/10.1111/j.1365-2966.2012.20556.x
https://doi.org/10.1111/j.1365-2966.2012.20556.x
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 397:453-457
We report the discovery of pulsations in two DB stars found in the Edinburgh–Cape blue object survey. The light curve of EC 04207−4748 appears to be dominated by a strong variation at 2235 μHz (447 s) and its first overtone near 4475 μHz (223 s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cac327f959726c5fd6422a7d85557007
https://doi.org/10.1111/j.1365-2966.2009.14966.x
https://doi.org/10.1111/j.1365-2966.2009.14966.x
Autor:
H. T. MacGillivray, Donal O'Donoghue, David Kilkenny, Nigel Hambly, C. A. Engelbrecht, L. Crause
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 396:548-552
We report the discovery of very rapid pulsations in two hot subdwarf stars from the Edinburgh-Cape blue object survey. The short periods, small amplitudes and multiperiodicity establish these stars as members of the class of rapidly-pulsating sdB sta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5765080ea2c7f02db33ddca02ecd199
https://doi.org/10.1111/j.1365-2966.2009.14724.x
https://doi.org/10.1111/j.1365-2966.2009.14724.x
Autor:
Gilles Fontaine, P.-O. Quirion, Suzanna K. Randall, B. Q. For, Pierre Chayer, Donald M. Terndrup, Elizabeth M. Green, L. Crause, Timothy R. Bedding, A. P. Jacob, Pierre Brassard, László L. Kiss, D. Kilkenny, Abigail R. Daane
Publikováno v:
The Astrophysical Journal. 643:1198-1218
We present the results of an extensive multisite campaign on the long-period variable subdwarf B star PG 1627+017. We gathered 300 hr of useful R-band and ~50 hr of simultaneous U/R differential photometry. From the R-band data we were able to extrac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f76e327b76c6bf35c96625d3cda4eab
https://doi.org/10.1086/502964
https://doi.org/10.1086/502964
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 361:559-564
Thirty-four new timings of maxima of the radially pulsating extreme helium (EHe) star V652 Her (=BD+13° 3224) obtained during 1996-2004 are reported. The quartic ephemeris (for the pulsation period decrease) is extended and the higher-order terms ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eacfc5a0804be2faf86bdacee10d1383
https://doi.org/10.1111/j.1365-2966.2005.09188.x
https://doi.org/10.1111/j.1365-2966.2005.09188.x
Autor:
T. E. Pickering, T. O. Husser, Vasilii V. Gvaramadze, Amanda A. S. Gulbis, Encarni Romero-Colmenero, Eric J. Hooper, S. B. Potter, Marsha J. Wolf, D. A. H. Buckley, P. Kotze, Christian Hettlage, N. S. Loaring, Petri Väisänen, Kenneth H. Nordsieck, Helge Todt, L. Crause, A. Y. Kniazev, T. B. Williams, S. Crawford, Wolf-Rainer Hamann, Donal O'Donoghue
A considerable fraction of the central stars of planetary nebulae (CSPNe) are hydrogen-deficient. Almost all of these H-deficient central stars (CSs) display spectra with strong carbon and helium lines. Most of them exhibit emission line spectra rese
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e7bd277350c40ef996e1b3baa52b820
Akademický článek
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Autor:
O. W. Butters, James O'Conner, L. Crause, M. Still, Piet Fourie, Andrew Norton, Craig Sass, David A. H. Buckley, Geoff Evans, S. B. Potter, Darragh O'Donoghue, Koji Mukai
Publikováno v:
SPIE Proceedings.
We report on the completion of a new 2 channel, HIgh speed Photo-POlarimeter (HIPPO) for the 1.9m optical telescope of the South African Astronomical Observatory. The instrument makes use of rapidly counter-rotating (10Hz), super-achromatic half- and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e9f90cbbdd37c446e5aca59c0a4fbe2
https://doi.org/10.1117/12.789716
https://doi.org/10.1117/12.789716
Akademický článek
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