Zobrazeno 41 - 50
of 1 991
pro vyhledávání: '"Richardson N"'
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:
Shenar, T., Hainich, R., Todt, H., Sander, A., Hamann, W. -R., Moffat, A. F. J., Eldridge, J. J., Pablo, H., Oskinova, L. M., Richardson, N. D.
Massive WR stars are evolved massive stars characterized by strong mass-loss. Hypothetically, they can form either as single stars or as mass donors in close binaries. About 40% of the known WR stars are confirmed binaries, raising the question as to
Externí odkaz:
http://arxiv.org/abs/1604.01022
Autor:
Teodoro, M., Damineli, A., Heathcote, B., Richardson, N. D., Moffat, A. F. J., St-Jean, L., Russell, C., Gull, T. R., Madura, T. I., Pollard, K. R., Walter, F., Coimbra, A., Prates, R., Fernández-Lajús, E., Gamen, R. C., Hickel, G., Henrique, W., Navarete, F., Andrade, T., Jablonski, F., Luckas, P., Locke, M., Powles, J., Bohlsen, T., Chini, R., Corcoran, M. F., Hamaguchi, K., Groh, J. H., Hillier, D. J., Weigelt, G.
{\eta} Carinae is an extremely massive binary system in which rapid spectrum variations occur near periastron. Most notably, near periastron the He II $\lambda 4686$ line increases rapidly in strength, drops to a minimum value, then increases briefly
Externí odkaz:
http://arxiv.org/abs/1601.03396
Autor:
Wisniewski, J. P., Chojnowski, S. D., Davenport, J. R. A., Bartz, J., Pepper, J., Whelan, D. G., Eikenberry, S. S., Lomax, J. R., Majewski, S. R., Richardson, N. D., Skrutskie, M.
The SDSS III APOGEE survey recently identified two new $\sigma$ Ori E type candidates, HD 345439 and HD 23478, which are a rare subset of rapidly rotating massive stars whose large (kGauss) magnetic fields confine circumstellar material around these
Externí odkaz:
http://arxiv.org/abs/1509.00128
Autor:
Corcoran, M. F., Hamaguchi, K., Liburd, J. K., Morris, D., Gull, T. R., Madura, T. I., Teodoro, M., Moffat, A. F. J., Richardson, N. D., Russell, C. M. P., Pollock, A. M. T., Owocki, S. P.
Eta Carinae is the nearest example of a supermassive, superluminous, unstable star. Mass loss from the system is critical in shaping its circumstellar medium and in determining its ultimate fate. Eta Car currently loses mass via a dense, slow stellar
Externí odkaz:
http://arxiv.org/abs/1507.07961
Autor:
Corcoran, M. F., Nichols, J. S., Pablo, H., Shenar, T., Pollock, A. M. T., Waldron, W. L., Moffat, A. F. J., Richardson, N. D., Russell, C. M. P., Hamaguchi, K., Huenemoerder, D. P., Oskinova, L., Hamann, W. -R., Naze, Y., Ignace, R., Evans, N. R., Lomax, J. R., Hoffman, J. L., Gayley, K., Owocki, S. P., Leutenegger, M., Gull, T. R., Hole, K. T., Lauer, J., Iping, R. C.
Publikováno v:
ApJ, 809, 132 (15p,2015)
We present an overview of four phase-constrained Chandra HETGS X-ray observations of Delta Ori A. Delta Ori A is actually a triple system which includes the nearest massive eclipsing spectroscopic binary, Delta Ori Aa, the only such object which can
Externí odkaz:
http://arxiv.org/abs/1507.05101
Autor:
Nichols, J. S., Huenemoerder, D. P., Corcoran, M. F., Waldron, W., Nazé, Y., Pollock, A. M. T., Moffat, A. F. J., Lauer, J., Shenar, T., Russell, C. M. P., Richardson, N. D., Pablo, H., Evans, N R., Hamaguchi, K., Gull, T., Hamann, W. R., Oskinova, L., Ignace, R., Hoffman, Jennifer L., Hole, K. T., Lomax, J. R.
Publikováno v:
ApJ, 809, 133 (21p,2015)
We present time-resolved and phase-resolved variability studies of an extensive X-ray high-resolution spectral dataset of the $\delta$ Orionis Aa binary system. The four observations, obtained with Chandra ACIS HETGS, have a total exposure time of ~4
Externí odkaz:
http://arxiv.org/abs/1507.04972
Autor:
Schaefer, G. H., Brummelaar, T. ten, Gies, D. R., Farrington, C. D., Kloppenborg, B., Chesneau, O., Monnier, J. D., Ridgway, S. T., Scott, N., Tallon-Bosc, I., McAlister, H. A., Boyajian, T., Maestro, V., Mourard, D., Meilland, A., Nardetto, N., Stee, P., Sturmann, J., Vargas, N., Baron, F., Ireland, M., Baines, E. K., Che, X., Jones, J., Richardson, N. D., Roettenbacher, R. M., Sturmann, L., Turner, N. H., Tuthill, P., van Belle, G., von Braun, K., Zavala, R. T., Banerjee, D. P. K., Ashok, N. M., Joshi, V., Becker, J., Muirhead, P. S.
Publikováno v:
Nature, 515, 234-236 (13 November 2014)
A classical nova occurs when material accreting onto the surface of a white dwarf in a close binary system ignites in a thermonuclear runaway. Complex structures observed in the ejecta at late stages could result from interactions with the companion
Externí odkaz:
http://arxiv.org/abs/1505.04852
Autor:
Shenar, T., Oskinova, L., Hamann, W. -R., Corcoran, M. F., Moffat, A. F. J., Pablo, H., Richardson, N. D., Waldron, W. L., Huenemoerder, D. P., Apellániz, J. Maíz, Nichols, J. S., Todt, H., Nazé, Y., Hoffman, J. L., Pollock, A. M. T., Negueruela, I.
Publikováno v:
ApJ, 809, 135 (20p,2015)
Eclipsing systems of massive stars allow one to explore the properties of their components in great detail. We perform a multi-wavelength, non-LTE analysis of the three components of the massive multiple system $\delta$ Ori A, focusing on the fundame
Externí odkaz:
http://arxiv.org/abs/1503.03476
Autor:
Aldoretta, E. J., Caballero-Nieves, S. M., Gies, D. R., Nelan, E. P., Wallace, D. J., Hartkopf, W. I., Henry, T. J., Jao, W. -C., Apellániz, J. Maíz, Mason, B. D., Moffat, A. F. J., Norris, R. P., Richardson, N. D., Williams, S. J.
We present the results of an all-sky survey made with the Fine Guidance Sensor on Hubble Space Telescope to search for angularly resolved binary systems among the massive stars. The sample of 224 stars is comprised mainly of Galactic O- and B-type st
Externí odkaz:
http://arxiv.org/abs/1410.0021