Zobrazeno 1 - 10
of 186
pro vyhledávání: '"Dallaporta, S."'
Nova Cas 2021 erupted on 18 March 2021, reaching naked-eye brightness when passing through photometric maximum 53 days later. We describe our ~daily monitoring of its evolution, covering the first 660 days since discovery. In all we obtained 574 high
Externí odkaz:
http://arxiv.org/abs/2302.04656
Autor:
Zasche, P., Borkovits, T., Jayaraman, R., Rappaport, S. A., Brož, M., Vokrouhlický, D., Bíró, I. B., Hegedüs, T., Kiss, Z. T., Uhlař, R., Schwengeler, H. M., Pál, A., Mašek, M., Howell, S. B., Dallaporta, S., Munari, U., Gagliano, R., Jacobs, T., Kristiansen, M. H., LaCourse, D., Omohundro, M., Terentev, I., Vanderburg, A., Henzl, Z., Powell, B. P., Kostov, V. B.
We report the discovery with $TESS$ of a third set of eclipses from V994 Herculis (TIC 424508303), previously only known as a doubly-eclipsing system. The key implication of this discovery and our analyses is that V994 Her is the second fully-charact
Externí odkaz:
http://arxiv.org/abs/2301.13521
Our photometric and spectroscopic monitoring shows that starting with 2020 June 4, day +217 from optical maximum and well into its advanced nebular stage, Nova Sct 2019 began displaying a series of nine large amplitude flares (up to Delta(m)~1.7 mag)
Externí odkaz:
http://arxiv.org/abs/2208.14733
We present and discuss the results of our photometric and spectroscopic monitoring of 2SXPS J173508.4-292958 carried out from April to August 2020. This X-ray source, in the foreground with respect to the Galactic center, brightened in X-rays during
Externí odkaz:
http://arxiv.org/abs/2012.11511
Autor:
Skopal, A., Shugarov, S. Yu., Munari, U., Masetti, N., Marchesini, E., Komzik, R. M., Kundra, E., Shagatova, N., Tarasova, T. N., Buil, C., Boussin, C., Shenavrin, V. I., Hambsch, F. -J., Dallaporta, S., Frigo, A., Garde, O., Zubareva, A., Dubovský, P. A., Kroll, P.
Publikováno v:
A&A 636, A77 (2020)
The star V426 Sge (HBHA~1704-05), originally classified as an emission-line object and a semi-regular variable, brightened at the beginning of August 2018, showing signatures of a symbiotic star outburst. We aim to confirm the nature of V426 Sge as a
Externí odkaz:
http://arxiv.org/abs/2003.10135
Autor:
Evans, A., Pavlenko, Ya. V., Banerjee, D. P. K., Munari, U., Gehrz, R. D., Woodward, C. E., Starrfield, S., Helton, L. A., Shahbandeh, M., Davis, S., Dallaporta, S., Cherini, G.
We report the discovery of the diatomic molecule SiO in the gas phase in the environment of the recurrent nova T Coronae Borealis. While some of the SiO is photospheric, a substantial portion must arise in the wind from the red giant component of T C
Externí odkaz:
http://arxiv.org/abs/1904.04731
Autor:
Giannini, T., Munari, U., Antoniucci, S., Lorenzetti, D., Arkharov, A. A., Dallaporta, S., Rossi, A., Traven, G.
V2492 Cyg is a young pre-main sequence star presenting repetitive brightness variations of significant amplitude (Delta R > 5 mag) whose physical origin has been ascribed to both extinction (UXor-type) and accretion (EXor-type) variability, although
Externí odkaz:
http://arxiv.org/abs/1710.08151
Autor:
Giannini, T., Antoniucci, S., Lorenzetti, D., Munari, U., Causi, G. Li, Manara, C. F., Nisini, B., Arkharov, A. A., Dallaporta, S., Di Paola, A., Giunta, A., Harutyunyan, A., Klimanov, S. A., Marchetti, A., Righetti, G. L., Rossi, A., Strafella, F., Testa, V.
After a quiescence period of about 10 years, the classical EXor source V1118 Ori has undergone an accretion outburst in 2015 September. The maximum brightness (DV > 4 mag) was reached in 2015 December and was maintained for several months. Since 2016
Externí odkaz:
http://arxiv.org/abs/1704.05777
Autor:
Munari, U., Dallaporta, S., Castellani, F., Baldinelli, L., Righetti, G. L., Graziani, M., Cherini, G., Maitan, A., Moretti, S., Tomaselli, S., Frigo, A.
After 26 years from the major event of 1990, in early 2016 the puzzling symbiotic binary MWC 560 has gone into a new and even brighter outburst. We present our tight BVRI photometric monitoring of MWC 560 (451 independent runs distributed over 357 di
Externí odkaz:
http://arxiv.org/abs/1607.06309
The recurrent nova T CrB has entered in 2015 a phase of unprecedented high activity. To trace something equivalent, it is necessary to go back to 1938, before the last nova eruption in 1946. The 2015 super-active state is characterized by: a large in
Externí odkaz:
http://arxiv.org/abs/1602.07470