Zobrazeno 1 - 10 of 123 pro vyhledávání: '"R. E. Nather"'
1
The pulsations of PG 1351+489
Autor: Carl J. Hansen, Judith L. Provencal, D. A. H. Buckley, Waldemar Ogloza, Michael D. Reed, M. M. Brewer, Hari Om Vats, Mary E. Oksala, Jian-Ning Fu, R. E. Nather, Denis J. Sullivan, Luciano Fraga, Ramotholo Sefako, Ivan Bruni, J. E. S. Costa, Matt A. Wood, Wen Ping Chen, W. Strickland, Fergal Mullally, Roberto Silvotti, B. N. Ashoka, B. Walter, Timothy M. Brown, S. Hemar, R. Rosen, E. G. Meištas, P. Henrique, M. Andreev, X. Zhang, T. K. Watson, Kiran S. Baliyan, P. Ibbetson, Chuck Claver, Rimvydas Janulis, Harry L. Shipman, Michael H. Montgomery, Gerald Handler, J. C. Clemens, Antonio Kanaan, M. Chevreton, J. Dalessio, J.-E. Solheim, Thorsten Nagel, S. L. Kim, B. Pfeiffer, A. V. Chernyshev, Susan E. Thompson, Martin A. Barstow, S. Seetha, M. Redaelli, Donald E Winget, Atsuko Nitta, T. M. K. Marar, G. Vauclair, Michal Siwak, M. Yang, Xiao-Jun Jiang, Orlagh Creevey, Pawel Moskalik, Elia M. Leibowitz, A. V. Sergeev, J. R. Fremy, G. Pajdosz, M. Winiarski, S. J. Kleinman, D. Chandler, Andrzej S. Baran, Souza Oliveira Kepler, B. G. Castanheira, Chia-You Shih, Staszek Zola, O. Giovannini, D. Childers, Agnès Bischoff-Kim, Zs. Bognár, Donal O'Donoghue, N. Dolez, Steven D. Kawaler
Publikováno v: Monthly Notices of the Royal Astronomical Society. 415:1220-1227
PG 1351+489 is one of the 20 DBVs ― pulsating helium-atmosphere white dwarf stars ― known and has the simplest power spectrum for this class of star, making it a good candidate to study cooling rates. We report accurate period determinations for
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eff6ec6cd934d00a13956828bfc01a0b
https://doi.org/10.1111/j.1365-2966.2011.18743.x
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2
Whole Earth telescope observations of the ZZ Ceti star HL Tau 76
Autor: Waldemar Ogloza, P. Ibbetson, S. Zola, Matt A. Wood, M. S. O'Brien, Nicole M. Silvestri, R. E. Nather, Antonio Kanaan, E. W. Klumpe, Travis S. Metcalfe, S. Bernabei, G. Vauclair, Dong Xu, E. G. Meištas, Luciano Fraga, B. N. Ashoka, R. Kalytis, Ana Ulla, J. Krzesinski, N. Dolez, Michael D. Reed, Denis J. Sullivan, T. J. Ahrens, T. Sullivan, Rimvydas Janulis, Divas Sanwal, S. J. Kleinman, M. Chevreton, J. E. Solheim, Steven D. Kawaler, Pawel Moskalik, Roberto Silvotti, J. M. Gonzalez Perez, J. N. Fu, Xiao-Jun Jiang, Eran O. Ofek, Elia M. Leibowitz, D. Ališauskas, Anjum S. Mukadam, Gerald Handler, D. Kilkenny
Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2006, 446, pp.237-257. ⟨10.1051/0004-6361:20053149⟩
Astronomy and Astrophysics-A&A, 2006, 446, pp.237-257. ⟨10.1051/0004-6361:20053149⟩
International audience; This paper analyses the Whole Earth Telescope observations of HL Tau 76, the first discovered pulsating DA white dwarf. The star was observed during two Whole Earth Telescope campaigns. It was a second priority target during t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::672c9461ff9b74dfbe6d17278d3417b6
https://doi.org/10.1051/0004-6361:20053149
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3
DQ Herculis in Profile: Whole Earth Telescope Observations and Smoothed Particle Hydrodynamics Simulations of an Edge‐on Cataclysmic Variable System
Autor: M. A. Wood, J. R. Robertson, J. C. Simpson, S. D. Kawaler, M. S. O’Brien, R. E. Nather, D. E. Winget, M. H. Montgomery, T. S. Metcalfe, X. J. Jiang, E. M. Leibowitz, P. Ibbetson, D. O’Donoghue, S. Zola, J. Krzesinski, G. Pajdosz, G. Vauclair, N. Dolez, M. Chevreton, D. J. Sullivan, A. Kanaan, A. Nitta
Publikováno v: The Astrophysical Journal
The Astrophysical Journal, 2005, 634, pp.570-584. ⟨10.1086/496957⟩
International audience; The old nova DQ Herculis was the Whole Earth Telescope Northern Hemisphere target for the 1997 July campaign and was observed on four nights with the SARA 0.9 m telescope during 2003 June. We present updated ephemerides for th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8c46cdeeaf0caa6b47b6cecc81cccd7
https://doi.org/10.1086/496957
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4
Argos: An optimized time-series photometer
Autor: R. E. Nather, Anjum S. Mukadam
Publikováno v: Journal of Astrophysics and Astronomy. 26:321-330
We designed a prime focus CCD photometer, Argos, optimized for high speed time-series measurements of blue variables (Nather & Mukadam 2004) for the 2.1 m telescope at McDonald Observatory. Lack of any intervening optics between the primary mirror an
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::68b738c3983b0f60a78e24cade2c91de
https://doi.org/10.1007/bf02702340
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5
Whole Earth Telescope observations of the pulsating hot white dwarf PG 1707+427
Autor: Chuck Claver, E. M. Potter, Timothy R. Bedding, M. Chevreton, Don Winget, Pawel Moskalik, S. J. Kleinman, Anne E. Sansom, Albert D. Grauer, Simon J. O'Toole, J. S. Dixson, Martin A. Barstow, Souza Oliveira Kepler, G. Vauclair, R. E. Nather, F. Wesemael, Z. E. Dind, M. Vuckovic, T. K. Watson, Gilles Fontaine, Paul A. Bradley, M. S. O'Brien, J. C. Clemens, Antonio Kanaan, Pierre Bergeron, J. L. Provencal, Steven D. Kawaler, N. Dolez
Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2004, 428, pp.969-981. ⟨10.1051/0004-6361:20041475⟩
International audience; We report on the analysis of multisite time-series photometry of the pulsating pre-white dwarf (GW Vir star) PG 1707+427, obtained by the Whole Earth Telescope collaboration. This is the last of the known GW Vir stars without
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a656b9ea7fb9857f78986ad52dd18ffb
https://doi.org/10.1051/0004-6361:20041475
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6
Thirty‐Five New Pulsating DA White Dwarf Stars
Autor: Atsuko Nitta, Detlev Koester, Antonio Kanaan, Ted von Hippel, Anjum S. Mukadam, D. Homeier, Souza Oliveira Kepler, Denis J. Sullivan, Fergal Mullally, D. Reaves, Jurek Krzesinski, Don Winget, S. J. Kleinman, C. Cotter, J. Brinkmann, Susan E. Thompson, D. Slaughter, R. E. Nather
Publikováno v: The Astrophysical Journal. 607:982-998
We present 35 new pulsating DA (hydrogen atmosphere) white dwarf stars discovered from the Sloan Digital Sky Survey (SDSS) and the Hamburg Quasar Survey (HQS). We have acquired high-speed time series photometry of preselected DA white dwarfs with a p
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f68b2fa562ac4cad71c842c48a34f9b4
https://doi.org/10.1086/383083
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7
A CCD Time‐Series Photometer
Autor: Anjum S. Mukadam, R. E. Nather
Publikováno v: The Astrophysical Journal. 605:846-853
We describe a high speed time-series CCD photometer for the prime focus of the 82-in (2.1 m) telescope at McDonald Observatory, and summarize the observational results we have obtained since it was placed into regular use in February, 2002. We compar
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f81574027f6faa35fb9b18f4d1f132d
https://doi.org/10.1086/382676
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8
Constraining the Evolution of ZZ Ceti
Autor: N. Dolez, Pawel Moskalik, R. L. Riddle, Minia Manteiga, Gerald Handler, O. Suárez, Antonio Kanaan, W. Ogloza, J. E. Solheim, D. Kilkenny, B. N. Ashoka, Jaymie M. Matthews, Jian-Ning Fu, R. E. Nather, J. Krzesinski, M. S. O’Brien, T. J. Ahrens, Luciano Fraga, R. R. Shobbrook, Mukremin Kilic, Paul A. Bradley, Joyce A. Guzik, Eran O. Ofek, S. J. Kleinman, A. F. M. Costa, M. Müller, Nicole M. Silvestri, Elia M. Leibowitz, Margarida S. Cunha, T. K. Watson, R. Kalytis, Souza Oliveira Kepler, M. Chevreton, Fergal Mullally, O. Giovannini, Pierre Bergeron, Santosh Joshi, K. Sekiguchi, D. Ališauskas, Gilles Fontaine, E. G. Meištas, Atsuko Nitta, T. von Hippel, Divas Sanwal, Staszek Zola, D. J. Sullivan, R. Janulis, Anjum S. Mukadam, Donald E Winget, Xiao-Jun Jiang, D. W. Kurtz, Donal O'Donoghue, Roberto Silvotti, P. V. Birch, E. W. Klumpe, F. Johannessen, G. Vauclair, D. W. Xu, T. Sullivan, Matt A. Wood, P. Ibbetson, Ana Ulla, Michael D. Reed, T. S. Metcalfe, J. M. Gonzalez-Perez, S. Bernabei, Steven D. Kawaler
Publikováno v: ResearcherID
Scopus-Elsevier
The Astrophysical Journal
The Astrophysical Journal, 2003, 594, pp.961-970. ⟨10.1086/377044⟩
Baltic Astronomy
Baltic Astronomy, 2003, 12, pp.71-103
CIÊNCIAVITAE
Repositório Institucional da UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
NASA Astrophysics Data System
We report our analysis of the stability of pulsation periods in the DAV star (pulsating hydrogen atmosphere white dwarf) ZZ Ceti, also called R548. On the basis of observations that span 31 years, we conclude that the period 213.13 s observed in ZZ C
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fec0fe35bd8b0a44ba7cfeedb8296f55
https://doi.org/10.1086/377044
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9
Genetic‐Algorithm–based Asteroseismological Analysis of the DBV White Dwarf GD 358
Autor: Travis S. Metcalfe, R. E. Nather, Donald E Winget
Publikováno v: The Astrophysical Journal. 545:974-981
White dwarf asteroseismology offers the opportunity to probe the structure and composition of stellar objects governed by relatively simple physical principles. The observational requirements of asteroseismology have been addressed by the development
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87ea6cb6db7c0b5c51793e9403212b6c
https://doi.org/10.1086/317862
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10
Mode Identification of Pulsating White Dwarfs Using theHubble Space Telescope
Autor: J. C. Clemens, Souza Oliveira Kepler, R. E. Nather, Detlev Koester, Xiao-Jun Jiang, Edward L. Robinson
Publikováno v: The Astrophysical Journal. 539:379-391
We have obtained time-resolved ultraviolet spectroscopy for the pulsating DAV stars G226-29 and G185-32, and for the pulsating DBV star PG1351+489 with the Hubble Space Telescope Faint Object Spectrograph, to compare the ultraviolet to the optical pu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ea56cd1df4c6d77d4cd1a73c8660a162
https://doi.org/10.1086/309226
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