Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Leadbeater, R."'
Autor:
Murphy-Glaysher, F. J., Darnley, M. J., Harvey, É. J., Newsam, A. M., Page, K. L., Starrfield, S., Wagner, R. M., Woodward, C. E., Terndrup, D. M., Kafka, S., Heras, T. Arranz, Berardi, P., Bertrand, E., Biernikowicz, R., Boussin, C., Boyd, D., Buchet, Y., Bundas, M., Coulter, D., Dejean, D., Diepvens, A., Dvorak, S., Edlin, J., Eenmae, T., Eggenstein, H., Fournier, R., Garde, O., Gout, J., Janzen, D., Jordanov, P., Kiiskinen, H., Lane, D., Larochelle, R., Leadbeater, R., Mankel, D., Martineau, G., Miller, I., Modic, R., Montier, J., Aimar, M. Morales, Muyllaert, E., Nogues, R. Naves, O'Keeffe, D., Oksanen, A., Pyatnytskyy, M., Rast, R., Rodgers, B., Perez, D. Rodriguez, Schorr, F., Schwendeman, E., Shadick, S., Sharpe, S., Alfaro, F. Soldán, Sove, T., Stone, G., Tordai, T., Venne, R., Vollmann, W., Vrastak, M., Wenzel, K.
V392 Persei is a known dwarf nova (DN) that underwent a classical nova eruption in 2018. Here we report ground-based optical, Swift UV and X-ray, and Fermi-LAT \gamma-ray observations following the eruption for almost three years. V392 Per is one of
Externí odkaz:
http://arxiv.org/abs/2206.03443
Autor:
St-Louis, N., Piaulet, C., Richardson, N. D., Shenar, T., Moffat, A. F. J., Eversberg, T., Hill, G. M., Gauza, B., Knapen, J. H., Kubat, J., Kubatova, B., Sablowski, D. P., Simon-Diaz, S., Bolduan, F., Dias, F. M., Dubreuil, P., Fuchs, D., Garrel, T., Grutzeck, G., Hunger, T., Kusters, D., Langenbrink, M., Leadbeater, R., Li, D., Lopez, A., Mauclaire, B., Moldenhawer, T., Potter, M., Santos, E. M. dos, Schanne, L., Schmidt, J., Sieske, H., Strachan, J., Stinner, E., Stinner, P., Stober, B., Strandbaek, K., Syder, T., Verilhac, D., Waldschlager, U., Weiss, D., Wendt, A.
We present the results of a four-month, spectroscopic campaign of the Wolf-Rayet dust-making binary, WR137. We detect only small-amplitude, random variability in the CIII5696 emission line and its integrated quantities (radial velocity, equivalent wi
Externí odkaz:
http://arxiv.org/abs/2007.09239
Autor:
Aldoretta, E. J., St-Louis, N., Richardson, N. D., Moffat, A. F. J., Eversberg, T., Hill, G. M., Shenar, T., Artigau, É., Gauza, B., Knapen, J. H., Kubát, J., Kubátová, B., Maltais-Tariant, R., Muñoz, M., Pablo, H., Ramiaramanantsoa, T., Richard-Laferrière, A., Sablowski, D. P., Simón-Díaz, S., St-Jean, L., Bolduan, F., Dias, F. M., Dubreuil, P., Fuchs, D., Garrel, T., Grutzeck, G., Hunger, T., Küsters, D., Langenbrink, M., Leadbeater, R., Li, D., Lopez, A., Mauclaire, B., Moldenhawer, T., Potter, M., Santos, E. M. dos, Schanne, L., Schmidt, J., Sieske, H., Strachan, J., Stinner, E., Stinner, P., Stober, B., Strandbaek, K., Syder, T., Verilhac, D., Waldschläger, U., Weiss, D., Wendt, A.
During the summer of 2013, a 4-month spectroscopic campaign took place to observe the variabilities in three Wolf-Rayet stars. The spectroscopic data have been analyzed for WR 134 (WN6b), to better understand its behaviour and long-term periodicity,
Externí odkaz:
http://arxiv.org/abs/1605.04868
Autor:
Rauw, G., Morel, T., Naze, Y., Eversberg, T., Alves, F., Arnold, W., Bergmann, T., Viegas, N. G. Correia, Fahed, R., Fernando, A., Gonzalez-Perez, J. N., Carreira, L. F. Gouveia, Hempelmann, A., Hunger, T., Knapen, J. H., Leadbeater, R., Dias, F. Marques, Mittag, M., Moffat, A. F. J., Reinecke, N., Ribeiro, J., Romeo, N., Gallego, J. Sanchez, Santos, E. M. Dos, Schanne, L., Schmitt, J. H. M. M., Schroeder, K. -P., Stahl, O., Stober, Ba., Stober, Be., Vollmann, K.
Publikováno v:
A&A, 575, A99 (11p, 2015)
The Oe stars HD45314 and HD60848 have recently been found to exhibit very different X-ray properties: whilst HD60848 has an X-ray spectrum and emission level typical of most OB stars, HD45314 features a much harder and brighter X-ray emission, making
Externí odkaz:
http://arxiv.org/abs/1501.01377
Autor:
Muthumariappan, C., Parthasarathy, M., Leadbeater, R., Potravnov, I. S., Appakutty, M., Jayakumar, K.
We report high-resolution (R = 30\ 000, 45\ 000 and 75\ 000) echelle and medium-resolution (R = 22\ 000 and 10\ 000) spectroscopic observations of the long-period, eclipsing binary $\epsilon$ Aurigae during the 2009 - 2011 eclipse. Low-excitation she
Externí odkaz:
http://arxiv.org/abs/1409.5493
We present and analyze epsilon Aurigae data concerning the evolution of the H$\alpha$ line on the occasion of the 2009 International observation campaign launched to cover the eclipse of this object. About 250 high resolution spectra of the H$\alpha$
Externí odkaz:
http://arxiv.org/abs/1207.0795
Autor:
Leadbeater, R., Buil, C., Garrel, T., Gorodenski, S., Hansen, T., Schanne, L., Stencel, R., Stober, B., Thizy, O.
Publikováno v:
2012, J. Amer. Assoc. Var. Star Obs., 40, 729
The results of a spectroscopic survey of epsilon Aurigae during eclipse using a network of small telescopes are presented. The spectra have a resolution of 0.35 to 0.65{\AA} and cover the period 2008 to 2012 with a typical interval of 4 days during e
Externí odkaz:
http://arxiv.org/abs/1206.6754
Autor:
Fahed, R., Moffat, A. F. J., Zorec, J., Eversberg, T., Chené, A. N., Alves, F., Arnold, W., Bergmann, T., Carreira, L. F. Gouveia, Dias, F. Marques, Fernando, A., Gallego, J. Sanchez, Hunger, T., Knapen, J. H., Leadbeater, R., Morel, T., Rauw, G., Reinecke, N., Ribeiro, J., Romeo, N., Santos, E. M. dos, Schanne, L., Stahl, O., Stober, Ba., Stober, Be., Viegas, N. G. Correia, Vollmann, K., Corcoran, M. F., Dougherty, S. M., Pittard, J. M., Pollock, A. M. T., Williams, P. M.
We present the results from the spectroscopic follow-up of WR140 (WC7 + O4-5) during its last periastron passage in January 2009. This object is known as the archetype of colliding wind binaries and has a relatively large period (~ 8 years) and eccen
Externí odkaz:
http://arxiv.org/abs/1101.1430
Autor:
Morel, T., Rauw, G., Eversberg, T., Alves, F., Arnold, W., Bergmann, T., Viegas, N. G. Correia, Fahed, R., Fernando, A., Carreira, L. F. Gouveia, Hunger, T., Knapen, J. H., Leadbeater, R., Dias, F. Marques, Moffat, A. F. J., Reinecke, N., Ribeiro, J., Romeo, N., Gallego, J. Sanchez, Santos, E. M. dos, Schanne, L., Stahl, O., Stober, Ba., Stober, Be., Vollmann, K., Corcoran, M. F., Dougherty, S. M., Hamaguchi, K., Pittard, J. M., Pollock, A. M. T., Williams, P. M.
We present preliminary results of a 3-month campaign carried out in the framework of the Mons project, where time-resolved Halpha observations are used to study the wind and circumstellar properties of a number of OB stars.
Comment: 2 pages, 1 f
Comment: 2 pages, 1 f
Externí odkaz:
http://arxiv.org/abs/1009.4627
Autor:
Price, A., Bissinger, R., Laughlin, G., Gary, B., Vanmunster, T., Henden, A., Starkey, D., Kaiser, D., Holtzman, J., Marschall, L., Michalik, T., Wellington, T., Paakonen, P., Kereszty, Z. S., Durkee, R., Richardson, K., Leadbeater, R., Castellano, T.
Observations of TRES-1b transits made during the late summer and fall 2004 observing season reveal a statistically significant but low amplitude brightening event during egress.
Comment: Accepted for publication in JAAVSO Vol. 34 No. 1. Data ava
Comment: Accepted for publication in JAAVSO Vol. 34 No. 1. Data ava
Externí odkaz:
http://arxiv.org/abs/astro-ph/0412463