BONA FIDE, STRONG-VARIABLE GALACTIC LUMINOUS BLUE VARIABLE STARS ARE FAST ROTATORS: DETECTION OF A HIGH ROTATIONAL VELOCITY IN HR CARINAE

Autor: Roberto Claudio Gamen, D. J. Hillier, G. R. Solivella, E. Fernández-Lajús, Rodolfo H. Barbá, M. Teodoro, Augusto Damineli, A. P. Moisés, Jose H. Groh

Publikováno v: SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

We report optical observations of the luminous blue variable (LBV) HR Carinae which show that the star has reached a visual minimum phase in 2009. More importantly, we detected absorptions due to SiIV λλ4088-4116. To match their observed line profi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d9c05a448c0c063caf06dbf1aec155a5
https://doi.org/10.1088/0004-637x/705/1/l25

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

Asteroseismology of the Beta Cephei star 12 (DD) Lacertae: photometric observations, pulsational frequency analysis and mode identification

Autor: Gerald Handler, Bram Acke, L. Parrao, T. N. Dorokhova, Jadwiga Daszyńska-Daszkiewicz, A. I. Movchan, R. Garrido, M. Paparo, B. Berkey, N. I. Dorokhov, D. Lorenz, K. Uytterhoeven, D. Terry, Pedro J. Amado, J. P. Sareyan, Conny Aerts, S. N. Udovichenko, P.-O. Bourge, E. Poretti, M. Jerzykiewicz, Tijl Verhoelst, D. Zsuffa, Victoria Antoci, S. Stewart, J. De Ridder, K. Csorba, E. Rodríguez, David Mkrtichian, R. Drummond, R. Crowe, Timur Şahin

Publikováno v: Monthly Notices of the Royal Astronomical Society, 365, 327-338
Monthly Notices of the Royal Astronomical Society, 365, 1, pp. 327-338

We report a multisite photometric campaign for the Beta Cephei star 12 Lacertae. 750 hours of high-quality differential photoelectric Stromgren, Johnson and Geneva time-series photometry were obtained with 9 telescopes during 190 nights. Our frequenc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e9554b5f1967919f741900a90a8a66d
http://arxiv.org/abs/astro-ph/0510326

Identification of Variable Stars in COROT's First Main Observing Field (LRc1)

Autor: Holger Voss, Magali Deleuil, C. Moutou, Christoffer Karoff, T. Wiese, Petr Kabath, Heike Rauer, Hans J. Deeg, J. C. Meunier, Anders Erikson

Publikováno v: Karoff, C, Rauer, H, Erikson, A, Voss, H, Kabath, P, Wiese, T, Deleuil, M, Moutou, C, Meunier, J C & Deeg, H 2007, ' Identification of variable stars in COROT'S first main observing field (LRc1) ', Astronomical Journal, vol. 134, no. 2, pp. 766-777 . https://doi.org/10.1086/519524
Aarhus University

The COROT mission will monitor several target fields for up to 150 days to perform asteroseismology and to search for extrasolar planets by photometric transits. Variable stars in the target fields are important objects for additional scientific stud

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a537315b41241bdefaad0fbc2b560d2
http://arxiv.org/abs/0909.4797

Seismology of β Cephei Stars: Differentially Rotating Models for Interpreting the Oscillation Spectrum of ν Eridani

Autor: Pedro J. Amado, R. Garrido, Susana Martín-Ruiz, Cristina Rodríguez-López, Andrés Moya, Juan Carlos Suárez

Publikováno v: The Astrophysical Journal
The Astrophysical Journal, American Astronomical Society, 2009, 690, pp.1401-1411. ⟨10.1088/0004-637X/690/2/1401⟩
Digital.CSIC. Repositorio Institucional del CSIC
instname

35 pages, 8 figures, 3 tables.-- Pre-print archive.
A method for the asteroseismic analysis of beta Cephei stars is presented and applied to the star nu Eridani. The method is based on the analysis of rotational splittings, and their asymmetries

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0e6de3718de923a0c629cc20d80b956
https://hal.archives-ouvertes.fr/hal-00392013