Zobrazeno 1 - 10
of 189
pro vyhledávání: '"Giovannini, O."'
Autor:
Giovannini, O.1 (AUTHOR), Roman, T.2 (AUTHOR), Nesler, A.3 (AUTHOR), Pertot, I.1,4 (AUTHOR), Perazzolli, M.1,4 (AUTHOR)
Publikováno v:
Australian Journal of Grape & Wine Research. 12/29/2022, p1-15. 15p.
Autor:
Costa, J. E. S., Kepler, S. O., Winget, D. E., O'Brien, M. S., Kawaler, S. D., Costa, A. F. M., Giovannini, O., Kanaan, A., Mukadam, A. S., Mullally, F., Nitta, A., Provençal, J. L., Shipman, H., Wood, M. A., Ahrens, T. J., Grauer, A., Kilic, M., Bradley, P. A., Sekiguchi, K., Crowe, R., Jiang, X. J., Sullivan, D., Sullivan, T., Rosen, R., Clemens, J. C., Janulis, R., O'Donoghue, D., Ogloza, W., Baran, A., Silvotti, R., Marinoni, S., Vauclair, G., Dolez, N., Chevreton, M., Dreizler, S., Schuh, S., Deetjen, J., Nagel, T., Solheim, J. -E., Perez, J. M. Gonzalez, Ulla, A., Barstow, Martin, Burleigh, M., Good, S., Metcalfe, T. S., Kim, S. -L., Lee, H., Sergeev, A., Akan, M. C., Çakirli, Ö., Paparo, M., Viraghalmy, G., Ashoka, B. N., Handler, G., Hürkal, Özlem, Johannessen, F., Kleinman, S. J., Kalytis, R., Krzesinski, J., Klumpe, E., Larrison, J., Lawrence, T., Meištas, E., Martinez, P., Nather, R. E., Fu, J. -N., Pakštienė, E., Romero-Colmenero, E., Riddle, R., Seetha, S., Silvestri, N. M., Vučković, M., Warner, B., Zola, S., Althaus, L. G., Córsico, A. H., Montgomery, M. H.
Publikováno v:
2008A&A...477..627
PG 1159-035, a pre-white dwarf with T_eff=140,000 K, is the prototype of both two classes: the PG1159 spectroscopic class and the DOV pulsating class. Previous studies of PG 1159-035 photometric data obtained with the Whole Earth Telescope (WET) show
Externí odkaz:
http://arxiv.org/abs/0711.2244
Autor:
Kepler, S. O., Kleinman, S. J., Nitta, A., Koester, D., Castanheira, B. G., Giovannini, O., Costa, A. F. M., Althaus, L.
Publikováno v:
Mon.Not.Roy.Astron.Soc.375:1315-1324,2007
We determined masses for the 7167 DA and 507 DB white dwarf stars classified as single and non-magnetic in data release four of the Sloan Digital Sky Survey (SDSS). We obtained revised Teff and log g determinations for the most massive stars by fitti
Externí odkaz:
http://arxiv.org/abs/astro-ph/0612277
Autor:
Castanheira, B. G., Kepler, S. O., Costa, A. F. M., Giovannini, O., Robinson, E. L., Winget, D. E., Kleinman, S. J., Nitta, A., Eisenstein, D., Koester, D., Santos, M. G.
We have observed again two stars inside the ZZ Ceti instability strip that were previously classified as not-observed-to-vary (NOV) by Mukadam et al. (2004) and found them to be low-amplitude variables. Some evidence points to a pure ZZ Ceti instabil
Externí odkaz:
http://arxiv.org/abs/astro-ph/0611332
Autor:
Kleinman, S. J., Nather, R. E., Winget, D. E., Clemens, J. C., Bradley, P. A., Kanaan, A., Provencal, J. L., Claver, C. F., Watson, T. K., Yanagida, K., Nitta, A., Dixson, J. S., Wood, M. A., Grauer, A. D., Hine, B. P., Fontaine, G., Liebert, James, Sullivan, D. J., Wickramasinghe, D. T., Marar, N. Achilleos. T. M. K., Seetha, S., Ashoka, B. N., Meistas, E., Leibowitz, E. M., Moskalik, P., Krzesinski, J., Solheim, J. -E., Bruvold, A., Kurtz, D. W., Warner, B., Martinez, Peter, Vauclair, G., Dolez, N., Chevreton, M., Barstow, M. A., Kepler, S. O., Giovannini, O., Augusteijn, T., Hansen, C. J., Kawaler, S. D.
Publikováno v:
Astrophys.J.495:424-434,1998
The white dwarfs are promising laboratories for the study of cosmochronology and stellar evolution. Through observations of the pulsating white dwarfs, we can measure their internal structures and compositions, critical to understanding post main seq
Externí odkaz:
http://arxiv.org/abs/astro-ph/9711123
Akademický článek
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Autor:
Schuh S. L., Heber U., Dreizler S., O’Toole S., Jeffery C. S., Falter S., Woolf V.M., Riddle R. L., Handler G., Hürkal Ö., Pakštiene E., Klumpe E.W., Laurance T., Vuckovic M., Zoła S., Kawaler S. D., Kanaan A., Monteiro H., Giovannini O., Kepler S. O., Mukadam A., Provencal J.L., Nitta A., Shipman H., Mullally F., Grauer A., Wood M.A., Bradley P.A., Kilic M., Sekiguchi K., Crowe R., Sullivan D. J., Rosen R., Clemens C., Xiaojun J., Janulis R., O’Donoghue D., Ogloza W., Baran A., Silvotti R., Marinoni S., Vauclair G., Dolez N., Chevreton M., Deetjen J. L., Nagel T., Pérez J.M. González, Solheim J.-E., Østensen R., Ulla A., Burleigh M., Good S., Metcalfe T. S., Costa A. F.M. da, Costa J. E. S., O’Brien M.S., Kim S.-L., Lee H., Sergeev A., Akan C., Cakirli Ö., Paparo M., Viraghalmy G.
Publikováno v:
Open Astronomy, Vol 12, Iss 1, Pp 55-70 (2003)
The Multi-site spectroscopic telescope is a virtual instrument and the name of a collaboration that opens up a new observational window by combining continuous observations of spectroscopic variations and simultaneous photometric monitoring. This con
Externí odkaz:
https://doaj.org/article/28840730d2594961b2a462a88830d5a9
Autor:
Mukadam A. S., Kepler S. O., Winget D. E., Nather R. E., Kilic M., Mullally F., Hippel T. von, Kleinman S. J., Nitta A., Guzik J. A., Bradley P. A., Matthews J., Sekiguchi K., Sullivan D. J., Shobbrook R. R., Birch P., Jiang X. J., Xu D. W., Joshi S., Ashoka B.N., Ibbetson P., Leibowitz E., Ofek E. O., Meištas E. G., Janulis R., Ališauskas D., Kalytis R., Handler G., Kilkenny D., O’Donoghue D., Kurtz D. W., Müller M., Moskalik P., Ogłoza W., Zoła S., Krzesiński J., Johannessen F., Gonzalez-Perez J. M., Solheim J-E., Silvotti R., Bernabei S., Vauclair G., Dolez N., Fu J. N., Chevreton M., Manteiga M., Súarez O., Ulla A., Cunha M. S., Metcalfe T. S., Kanaan A., Fraga L., Costa A. F. M., Giovannini O., Fontaine G., Bergeron P., O’Brien M. S., Sanwal D., Wood M. A., Ahrens T. J., Silvestri N., Klumpe E. W., Kawaler S. D., Riddle R., Reed M. D., Watson T. K.
Publikováno v:
Open Astronomy, Vol 12, Iss 1, Pp 71-103 (2003)
We report our analysis of the stability of pulsation periods in the DAV star (pulsating hydrogen atmosphere white dwarf) ZZ Ceti, also called R548. Based on observations that span 31 years, we conclude that the period 213.132605 s observed in ZZ Ceti
Externí odkaz:
https://doaj.org/article/2f43468678c44bc7b5f349f3b424d8fd