Zobrazeno 1 - 10
of 126
pro vyhledávání: '"Richardson, N. D."'
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:
Jones, C. E., Labadie-Bartz, J., Cotton, D. V., Nazé, Y., Peters, G. J., Hillier, D. J., Neiner, C., Richardson, N. D., Hoffman, J. L., Carciofi, A. C., Wisniewski, J. P., Gayley, K. G., Suffak, M. W., Ignace, R., Scowen, P. A.
Publikováno v:
Astrophysics and Space Science, Volume 367, Issue 12, article id.124, December 2022
UV spectroscopy and spectropolarimetry hold the key to understanding certain aspects of massive stars that are largely inaccessible with optical or longer wavelength observations. This is especially true for the rapidly-rotating Be and Bn stars, owin
Externí odkaz:
http://arxiv.org/abs/2111.07926
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:
Damineli, A., Navarete, F., Hillier, D. J., Moffat, A. F. J., Corcoran, M. F., Gull, T. R., Richardson, N. D., Weigelt, G., Morris, P. W., Stevens, I.
Eta Carinae is a massive interacting binary system shrouded in a complex circumstellar environment whose evolution is the source of the long-term brightening observed during the last 80 years. An occulter, acting as a natural coronagraph, impacts obs
Externí odkaz:
http://arxiv.org/abs/2105.00590
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:
Klement, Robert, Carciofi, A. C., Rivinius, T., Ignace, R., Matthews, L. D., Torstensson, K., Gies, D., Vieira, R. G., Richardson, N. D., de Souza, A. Domiciano, Bjorkman, J. E., Hallinan, G., Faes, D. M., Mota, B., Gullingsrud, A. D., de Breuck, C., Kervella, P., Curé, M., Gunawan, D.
Publikováno v:
2019ApJ...885..147K
Rapid rotation is a fundamental characteristic of classical Be stars and a crucial property allowing for the formation of their circumstellar disks. Past evolution in a mass and angular momentum transferring binary system offers a plausible solution
Externí odkaz:
http://arxiv.org/abs/1909.12413
Autor:
Chené, A. -N., St-Louis, N., Moffat, A. F. J., Schnurr, O., Crowther, P. A., Wade, G. A., Richardson, N. D., Baranec, C., Ziegler, C. A., Law, N. M., Riddle, R., Rate, G. A., Artigau, É., Alecian, E., collaboration, BinaMIcS
Publikováno v:
MNRAS, 484, 5834 (2019)
The hot WN star WR2 (HD6327) has been claimed to have many singular characteristics. To explain its unusually rounded and relatively weak emission line profiles, it has been proposed that WR2 is rotating close to break-up with a magnetically confined
Externí odkaz:
http://arxiv.org/abs/1905.05815
Autor:
Aydi, E., Chomiuk, L., Strader, J., Swihart, S. J., Bahramian, A., Harvey, E. J., Britt, C. T., Buckley, D. A. H., Chen, P., Dage, K., Darnley, M. J., Dong, S., Hambsch, F-J., Holoien, T. W. -S., Jha, S. W., Kochanek, C. S., Kuin, N. P. M., Li, K. L., Monard, L. A. G., Mukai, K., Page, K. L., Prieto, J. L., Richardson, N. D., Shappee, B. J., Shishkovsky, L., Sokolovsky, K. V., Stanek, K. Z., Thompson, T.
We present a detailed study of the 2017 eruption of the classical nova ASASSN-17pf (LMCN 2017-11a), which is located in the Large Magellanic Cloud, including data from AAVSO, ASAS-SN, SALT, SMARTS, SOAR, and the Neil Gehrels \textit{Swift} Observator
Externí odkaz:
http://arxiv.org/abs/1903.09232
Autor:
Buysschaert, B., Neiner, C., Richardson, N. D., Ramiaramanantsoa, T., David-Uraz, A., Pablo, H., Oksala, M. E., Moffat, A. F. J., Mennickent, R. E., Legeza, S., Aerts, C., Kuschnig, R., Whittaker, G. N., Popowicz, A., Handler, G., Wade, G. A., Weiss, W. W.
Publikováno v:
A&A 602, A91 (2017)
Massive stars play a significant role in the chemical and dynamical evolution of galaxies. However, much of their variability, particularly during their evolved supergiant stage, is poorly understood. To understand the variability of evolved massive
Externí odkaz:
http://arxiv.org/abs/1704.00576
Autor:
Pablo, Herbert, Richardson, N. D., Fuller, J., Rowe, J., Moffat, A. F. J., Kuschnig, R., Popowicz, A., Handler, G., Neiner, C., Pigulski, A., Wade, G. A., Weiss, W., Buysschaert, B., Ramiaramanantsoa, T., Bratcher, A. D., Gerhartz, C. J., Greco, J. J., Hardegree-Ullman, K., Lembryk, L., Oswald, W. L.
{\iota} Ori is a well studied massive binary consisting of an O9 III + B1 III/IV star. Due to its high eccentricity (e = 0.764) and short orbital period (P orb = 29.13376 d), it has been considered to be a good candidate to show evidence of tidal eff
Externí odkaz:
http://arxiv.org/abs/1703.02086