Zobrazeno 1 - 10
of 931
pro vyhledávání: '"Williams, S. C."'
Observations of type Ia supernova SN 2020nlb up to 600 days after explosion, and the distance to M85
Autor:
Williams, S. C., Kotak, R., Lundqvist, P., Mattila, S., Mazzali, P. A., Pastorello, A., Reguitti, A., Stritzinger, M. D., Fiore, A., Hook, I. M., Moran, S., Salmaso, I.
The type Ia supernova (SN Ia) SN 2020nlb was discovered in the Virgo Cluster galaxy M85 shortly after explosion. Here we present observations that include one of the earliest high-quality spectra and some of the earliest multi-colour photometry of a
Externí odkaz:
http://arxiv.org/abs/2401.08759
Autor:
Dumayne, J., Hook, I. M., Williams, S. C., Lowes, G. A., Head, D., Fritz, A., Graur, O., Holwerda, B., Humphrey, A., Milligan, A., Nicholl, M., Roukema, B. F., Wiseman, P.
The Rubin Observatory's 10-year Legacy Survey of Space and Time will observe near to 20 billion galaxies. For each galaxy the properties can be inferred. Approximately $10^5$ galaxies observed per year will contain Type Ia supernovae (SNe), allowing
Externí odkaz:
http://arxiv.org/abs/2308.04863
Autor:
Pastorello, A., Valerin, G., Fraser, M., Reguitti, A., Elias-Rosa, N., Filippenko, A. V., Rojas-Bravo, C., Tartaglia, L., Reynolds, T. M., Valenti, S., Andrews, J. E., Ashall, C., Bostroem, K. A., Brink, T. G., Burke, J., Cai, Y. -Z., Cappellaro, E., Coulter, D. A., Dastidar, R., Davis, K. W., Dimitriadis, G., Fiore, A., Foley, R. J., Fugazza, D., Galbany, L., Gangopadhyay, A., Geier, S., Gutierrez, C. P., Haislip, J., Hiramatsu, D., Holmbo, S., Howell, D. A., Hsiao, E. Y., Hung, T., Jha, S. W., Kankare, E., Karamehmetoglu, E., Kilpatrick, C. D., Kotak, R., Kouprianov, V., Kravtsov, T., Kumar, S., Li, Z. -T., Lundquist, M. J., Lundqvist, P., Matilainen, K., Mazzali, P. A., McCully, C., Misra, K., Morales-Garoffolo, A., Moran, S., Morrell, N., Newsome, M., Gonzalez, E. Padilla, Pan, Y. -C., Pellegrino, C., Phillips, M. M., Pignata, G., Piro, A. L., Reichart, D. E., Rest, A., Salmaso, I., Sand, D. J., Siebert, M. R., Smartt, S. J., Smith, K. W., Srivastav, S., Stritzinger, M. D., Taggart, K., Tinyanont, S., Yan, S. -Y., Wang, L., Wang, X. -F., Williams, S. C., Wyatt, S., Zhang, T. -M., de Boer, T., Chambers, K., Gao, H., Magnier, E.
Publikováno v:
A&A 671, A158 (2023)
We present photometric and spectroscopic data on three extragalactic luminous red novae (LRNe): AT2018bwo, AT2021afy, and AT2021blu. AT2018bwo was discovered in NGC45 (at 6.8 Mpc) a few weeks after the outburst onset. During the monitoring period, th
Externí odkaz:
http://arxiv.org/abs/2208.02782
Autor:
Valerin, G., Pumo, M. L., Pastorello, A., Reguitti, A., Elias-Rosa, N., Gútierrez, C. P., Kankare, E., Fraser, M., Mazzali, P. A., Howell, D. A., Kotak, R., Galbany, L., Williams, S. C., Cai, Y. -Z., Salmaso, I., Pinter, V., Müller-Bravo, T. E., Burke, J., Gonzalez, E. Padilla, Hiramatsu, D., McCully, C., Newsome, M., Pellegrino, C.
Photometric and spectroscopic data for two Low Luminosity Type IIP Supernovae (LL SNe IIP) are presented. SN 2020cxd reaches a peak absolute magnitude $M_{r}$ = -13.90 $\pm$ 0.05 mag two days after explosion, subsequently settling on a plateau for $\
Externí odkaz:
http://arxiv.org/abs/2203.03988
Autor:
Killestein, T. L., Lyman, J., Steeghs, D., Ackley, K., Dyer, M. J., Ulaczyk, K., Cutter, R., Mong, Y. -L., Galloway, D. K., Dhillon, V., O'Brien, P., Ramsay, G., Poshyachinda, S., Kotak, R., Breton, R. P., Nuttall, L. K., Pallé, E., Pollacco, D., Thrane, E., Aukkaravittayapun, S., Awiphan, S., Burhanudin, U., Chote, P., Chrimes, A., Daw, E., Duffy, C., Eyles-Ferris, R., Gompertz, B., Heikkilä, T., Irawati, P., Kennedy, M. R., Levan, A., Littlefair, S., Makrygianni, L., Sánchez, D. Mata, Mattila, S., Maund, J., McCormac, J., Mkrtichian, D., Mullaney, J., Rol, E., Sawangwit, U., Stanway, E., Starling, R., Strøm, P. A., Tooke, S., Wiersema, K., Williams, S. C.
Large-scale sky surveys have played a transformative role in our understanding of astrophysical transients, only made possible by increasingly powerful machine learning-based filtering to accurately sift through the vast quantities of incoming data g
Externí odkaz:
http://arxiv.org/abs/2102.09892
Autor:
Pastorello, A., Valerin, G., Fraser, M., Elias-Rosa, N., Valenti, S., Reguitti, A., Mazzali, P. A., Amaro, R. C., Andrews, J. E., Dong, Y., Jencson, J., Lundquist, M., Reichart, D. E., Sand, D. J., Wyatt, S., Smartt, S. J., Smith, K. W., Srivastav, S., Cai, Y. -Z., Cappellaro, E., Holmbo, S., Fiore, A., Jones, D., Kankare, E., Karamehmetoglu, E., Lundqvist, P., Morales-Garoffolo, A., Reynolds, T. M., Stritzinger, M. D., Williams, S. C., Chambers, K. C., de Boer, T. J. L., Huber, M. E., Rest, A., Wainscoat, R.
Publikováno v:
A&A 647, A93 (2021)
We present the results of our monitoring campaigns of the luminous red novae (LRNe) AT 2020hat in NGC 5068 and AT 2020kog in NGC 6106. The two objects were imaged (and detected) before their discovery by routine survey operations. They show a general
Externí odkaz:
http://arxiv.org/abs/2011.10590
Autor:
Pastorello, A., Fraser, M., Valerin, G., Reguitti, A., Itagaki, K., Ochner, P., Williams, S. C., Jones, D., Munday, J., Smartt, S. J., Smith, K. W., Srivastav, S., Elias-Rosa, N., Kankare, E., Karamehmetoglu, E., Lundqvist, P., Mazzali, P. A., Munari, U., Stritzinger, M. D., Tomasella, L., Anderson, J. P., Chambers, K. C., Rest, A.
Publikováno v:
A&A 646, A119 (2021)
We present the follow-up campaign of the luminous red nova (LRN) AT~2019zhd, the third event of this class observed in M 31. The object was followed by several sky surveys for about five months before the outburst, during which it showed a slow lumin
Externí odkaz:
http://arxiv.org/abs/2011.10588
Autor:
Harvey, E. J., Redman, M. P., Boumis, P., Akras, S., Fitzgerald, K., Dulaimi, S., Williams, S. C., Darnley, M. J., Lam, M. C., Kopsacheilli, 1 M., Derlopa, S.
A classical nova is an eruption on the surface of a white dwarf in an accreting binary system. The material ejected from the white dwarf surface generally forms an axisymmetric shell. The shaping mechanisms of nova shells are probes of the processes
Externí odkaz:
http://arxiv.org/abs/2009.08272
Autor:
Williams, S. C., Hook, I. M., Hayden, B., Nordin, J., Aldering, G., Boone, K., Goobar, A., Lidman, C. E., Perlmutter, S., Rubin, D., Ruiz-Lapuente, P., Saunders, C.
The Supernova Cosmology Project has conducted the `See Change' programme, aimed at discovering and observing high-redshift (1.13 $\leq$ z $\leq$ 1.75) Type Ia supernovae (SNe Ia). We used multi-filter Hubble Space Telescope (HST) observations of mass
Externí odkaz:
http://arxiv.org/abs/2005.07112
Autor:
Darnley, M. J., Newsam, A. M., Chinetti, K., Hawkins, I. D. W., Jannetta, A. L., Kasliwal, M. M., McGarry, J. C., Shara, M. M., Sitaram, M., Williams, S. C.
AT2016dah and AT2017fyp are fairly typical Andromeda Galaxy (M31) classical novae. AT2016dah is an almost text book example of a 'very fast' declining, yet uncommon, Fe II'b' (broad-lined) nova, discovered during the rise to peak optical luminosity,
Externí odkaz:
http://arxiv.org/abs/2004.09431