Zobrazeno 1 - 10
of 916
pro vyhledávání: '"WILLIAMS, R. E."'
The recurrent nova T Pyxidis has erupted six times since 1890, with its last outburst in 2011, and the relatively short recurrence time between classical nova explosions indicates that T Pyx must have a massive white dwarf accreting at a high rate. I
Externí odkaz:
http://arxiv.org/abs/2409.02090
Autor:
Aydi, E., Chomiuk, L., Strader, J., Sokolovsky, K. V., Williams, R. E., Buckley, D. A. H., Ederoclite, A., Izzo, L., Kyer, R., Linford, J. D., Kniazev, A., Metzger, B. D., Mikolajewska, J., Molaro, P., Mollina, I., Mukai, K., Munari, U., Orio, M., Panurach, T., Shappee, B. J., Shen, K. J., Sokoloski, J. L., Urquhart, R., Walter, F. M.
The optical spectra of novae are characterized by emission lines from the hydrogen Balmer series and either Fe II or He/N, leading to their traditional classification into two spectral classes: "Fe II" and "He/N". For decades, the origins of these sp
Externí odkaz:
http://arxiv.org/abs/2309.07097
Autor:
Aydi, E., Chomiuk, L., Mikołajewska, J., Brink, J., Metzger, B. D., Strader, J., Buckley, D. A. H., Harvey, E. J., Holoien, T. W. -S., Izzo, L., Kawash, A., Linford, J. D., Molaro, P., Mollina, B., Mróz, P., Mukai, K., Orio, M., Panurach, T., Senchyna, P., Shappee, B. J., Shen, K. J., Sokoloski, J. L., Sokolovsky, K. V., Urquhart, R., Williams, R. E.
We present early spectral observations of the very slow Galactic nova Gaia22alz, over its gradual rise to peak brightness that lasted 180 days. During the first 50 days, when the nova was only 3--4 magnitudes above its normal brightness, the spectra
Externí odkaz:
http://arxiv.org/abs/2304.04306
Autor:
Munari, U., Masetti, N., Walter, F. M., Williams, R. E., Hambsch, F. -J., Frigo, A., Valisa, P.
Publikováno v:
A&A 667, A7 (2022)
We report on the fast Nova Sgr 2016 N.4 being surprisingly trapped in a long-lasting and bright plateau (Delta I >= 10 mag above quiescence) six years past the nova eruption. Very few other novae experience a similar occurrence. We carried out an int
Externí odkaz:
http://arxiv.org/abs/2208.09630
Autor:
Orio, M., Ness, J. -U., Dobrotka, A., Gatuzz, E., Ospina, N., Aydi, E., Behar, E., Buckley, D. A. H., Ciroi, S., Della Valle, M., Hernanz, M., Henze, M., Osborne, J. P., Page, K. L., Rauch, T., Sala, G., Starrfield, S., Williams, R. E., Woodward, C. E., Zemko, P.
Nova SMC 2016 has been the most luminous nova known in the direction of the Magellanic Clouds. It turned into a very luminous supersoft X-ray source between day 16 and 28 after the optical maximum. We observed it with Chandra, the HRC-S camera and th
Externí odkaz:
http://arxiv.org/abs/1806.08249
Autor:
Aydi, E., Page, K. L., Kuin, N. P. M., Darnley, M. J., Walter, F. M., Mróz, P., Buckley, D., Mohamed, S., Whitelock, P., Woudt, P., Williams, S. C., Orio, M., Williams, R. E., Beardmore, A. P., Osborne, J. P., Kniazev, A., Ribeiro, V. A. R. M., Udalski, A., Strader, J., Chomiuk, L.
We report on multiwavelength observations of nova SMCN 2016-10a. The present observational set is one of the most comprehensive for any nova in the Small Magellanic Cloud, including: low, medium, and high resolution optical spectroscopy and spectropo
Externí odkaz:
http://arxiv.org/abs/1710.03716
Autor:
Aydi, E., Mróz, P., Whitelock, P. A., Mohamed, S., Wyrzykowski, Ł., Udalski, A., Vaisanen, P., Nagayama, T., Dominik, M., Scholz, A., Onozato, H., Williams, R. E., Hodgkin, S. T., Nishiyama, S., Yamagishi, M., Smith, A. M. S., Ryu, T., Iwamatsu, A., Kawamata, I.
We report spectroscopic and photometric follow-up of the peculiar nova V5852~Sgr (discovered as OGLE-2015-NOVA-01), which exhibits a combination of features from different nova classes. The photometry shows a flat-topped light curve with quasi-period
Externí odkaz:
http://arxiv.org/abs/1606.02755
Autor:
Shore, S. N., Mason, E., Schwarz, G. J., Teyssier, F. M., Buil, C., Aquino, I. De Gennaro, Page, K. L., Osborne, J. P., Scaringi, S., Starrfield, S., van Winckel, H., Williams, R. E., Woodward, C. E.
Publikováno v:
2016 A&A, 590, 123
Classical novae are the product of thermonuclear runaway-initiated explosions occurring on accreting white dwarfs. V339 Del (Nova Delphinus 2013) was one of the brightest classical novae of the last hundred years. Spectroscopy and photometry are avai
Externí odkaz:
http://arxiv.org/abs/1606.01777
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Autor:
Godon, P., Sion, E. M., Starrfield, S., Livio, M., Williams, R. E., Woodward, C. E., Kuin, P., Page, K. L.
With six recorded nova outbursts, the prototypical recurrent nova T Pyxidis is the ideal cataclysmic variable system to assess the net change of the white dwarf mass within a nova cycle. Recent estimates of the mass ejected in the 2011 outburst range
Externí odkaz:
http://arxiv.org/abs/1402.0128