Zobrazeno 1 - 10
of 2 346
pro vyhledávání: '"Hamaguchi K"'
Autor:
Damineli, A., Hillier, D. J., Navarete, F., Moffat, A. F. J., Weigelt, G., Corcoran, M. F., Gull, T. R., Richardson, N. D., Ho, T. P., Madura, T. I., Espinoza-Galeas, D., Hartman, H., Morris, P., Pickett, C. S., Stevens, I. R., Russell, C. M. P., Hamaguchi, K., Jablonski, F. J., Teodoro, M., McGee, P., Cacella, P., Heathcote, B., Harrison, K., Johnston, M., Bohlsen, T., Di Scala, G.
Eta Carinae ($\eta$\,Car) exhibits a unique set of P Cygni profiles with both broad and narrow components. Over many decades, the spectrum has changed -- there has been an increase in observed continuum fluxes and a decrease in FeII and HI emission l
Externí odkaz:
http://arxiv.org/abs/2211.01445
Autor:
Endo, M., Hamaguchi, K., Ibe, M., Ishibashi, T., Ishikawa, A., Ishino, M., Ishitsuka, M., Kanemura, S., Kuriki, M., Mori, T., Moriyama, S., Nanjo, H., Ootani, W., Sato, Y.
The current strategy for future projects of the Japanese high energy physics community, Japan Association of High Energy Physicists (JAHEP), remains as described in the Final Report of the Committee on Future Projects in High Energy Physics, publishe
Externí odkaz:
http://arxiv.org/abs/2203.13979
Autor:
Pollock, A. M. T., Corcoran, M. F., Stevens, I. R., Russell, C. M. P., Hamaguchi, K., Williams, P. M., Moffat, A. F. J., Weigelt, G., Shenavrin, V., Richardson, N. D., Espinoza, D., Drake, S. A.
WR 140 is a long-period, highly eccentric Wolf-Rayet star binary system with exceptionally well-determined orbital and stellar parameters. Bright, variable X-ray emission is generated in shocks produced by the collision of the winds of the WC7pd+O5.5
Externí odkaz:
http://arxiv.org/abs/2109.10350
Autor:
del Palacio, S., García, F., Altamirano, D., Barbá, R. H., Bosch-Ramon, V., Corcoran, M., De Becker, M., Hamaguchi, K., Apellániz, J. Maíz, Adrover, P. Munar, Paredes, J. M., Romero, G. E., Sana, H., Tavani, M., ud-Doula, A.
We conducted an observational campaign towards one of the most massive and luminous colliding wind binaries in the Galaxy, HD~93129A, close to its periastron passage in 2018. During this time the source was predicted to be in its maximum of high-ener
Externí odkaz:
http://arxiv.org/abs/2004.10032
Autor:
Hamaguchi, K., Oskinova, L., Russell, C. M. P., Petre, R., Enoto, T., Morihana, K., Ishida, M.
Gamma Cassiopeiae is an enigmatic Be star with unusually strong hard X-ray emission. The Suzaku observatory detected six rapid X-ray spectral hardening events called "softness dips" in a ~100 ksec duration observation in 2011. All the softness dip ev
Externí odkaz:
http://arxiv.org/abs/1608.01374
Autor:
Hornbeck, Jeremy, Swearingen, Jeremy, Grady, Carol, Williger, G., Broan, A., Sitko, M., Wisniewski, J., Perrin, M., Lauroesch, J., Schneider, G., Apai, D., Brittain, S., Brown, J., Champnew, E., Hamaguchi, K., Henning, T., Lynch, D., Petre, R., Russell, R., Walter, F., Woodgate, B.
We have imaged GM Aur with HST, detected its disk in scattered light at 1400A and 1650A, and compared these with observations at 3300A, 5550A, 1.1 microns, and 1.6 microns. The scattered light increases at shorter wavelengths. The radial surface brig
Externí odkaz:
http://arxiv.org/abs/1607.03520
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:
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