Results 31 to 40 of about 85,351 (144)

On the nova-like eruptions of symbiotic binaries [PDF]

Monthly Notices of the Royal Astronomical Society, 1992
Three popular explanations for the nova-like eruptions observed in symbiotic binary stars are discussed and model predictions compared with recent observations. Most outbursts occur when unstable hydrogen shell burning causes a hot white dwarf to expand to a radius of 1-100 R ⊙ .
Joanna Mikołajewska, Scott J. Kenyon
openaire   +1 more source

Characterizing the Photometric Response of the ANS Collaboration Monitoring Program

Open Astronomy, 2012
the ANS Collaboration uses the UBV RCIC filters from various commercial manufacturers (Omega Optical, Custom Scientific, Schuler, Optec, Astrodon) for its ongoing photometric monitoring of symbiotic stars.
Munari U., Moretti S.
doaj   +1 more source

A spectrum of the symbiotic Nova RT Serpentis [PDF]

Publications of the Astronomical Society of the Pacific, 1985
The spectrum of RT Ser (Nova Serpentis 1909) was observed in 1979 in the range 6300 A to 6750 A, at a resolution of 0.6 A. In addition to the dominant Hα line, weak emission lines of [O I] λ6363 and He I λ6678 were detected. These lines have radial velocities of 64, 82, and 77 km s-1, respectively.
S. W. Mochnacki, G. Starkman
openaire   +1 more source

Filming the evolution of symbiotic novae with VLBI: the 2021 explosion of RS Oph

Proceedings of 15th European VLBI Network Mini-Symposium and Users' Meeting — PoS(EVN2022), 2023
Fifteen years after its previous outburst, the symbiotic recurrent nova RS Oph exploded again on 2021 Aug 8th, its first outburst during the Fermi era. In symbiotic novae, the material ejected from the surface of the white dwarf (WD) after the thermonuclear runaway drives a strong shock through the dense circumstellar gas produced by the red giant (RG)
Giroletti, M., Munari, U., Marcote, B., O'Brien, T.; id_orcid 0000-0001-7687-3543, Veres, P., Yang, J., Williams, D. R. A.; id_orcid 0000-0001-7361-0246, Woudt, P. A.   +7 more
openaire   +1 more source

PTF 11kx: A Type Ia Supernova with a Symbiotic Nova Progenitor [PDF]

Science, 2012
Stellar Explosions Stars that are born with masses greater than eight times that of the Sun end their lives in luminous explosions known as supernovae. Over the past decade, access to improved sky surveys has revealed rare types of supernovae that are much more luminous than any of those that were known before.
Dilday, B., Howell, D., Cenko, S., Silverman, J., Nugent, P., Sullivan, M., Ben-Ami, S., Bildsten, L., Bolte, M., Endl, M., Filippenko, A., Gnat, O., Horesh, A., Hsiao, E., Kasliwal, M., Kirkman, D., Maguire, K., Marcy, G., Moore, K., Pan, Y., Parrent, J., Podsiadlowski, P., Quimby, R., Sternberg, A., Suzuki, N., Tytler, D., Xu, D., Bloom, J., Gal-Yam, A., Hook, I., Kulkarni, S., Law, N., Ofek, E., Polishook, D., Poznanski, D.   +34 more
openaire   +5 more sources

Classical novae at radio wavelengths

, 2021
We present radio observations (1-40 GHz) for 36 classical novae, representing data from over five decades compiled from the literature, telescope archives, and our own programs.
Chomiuk, Laura, Mioduszewski, Amy J., Bannister, Keith W., Ribeiro, Valerio A., Aydi, Elias, Filipovic, Miroslav (R7673), Ryder, Stuart D., Kawash, Adam, Filipović, Miroslav D., Linford, Justin D., Ribeiro, Valério A. R. M., Kool, Erik C., Finzell, Tom, Strader, Jay, Sokoloski, Jennifer L., Rupen, Michael P., Urquhart, Ryan, Krauss, Miriam, Metzger, Brian D., Roy, Nirupam, Mukai, Koji, Kool, Erik C.,, Weston, Jennifer, Krauss, Miriam I., Sokolovsky, Kirill, Sokolovsky, Kirill V., Nyamai, Miriam M., Nelson, Thomas J., Koji Mukai, Michael P. Rupen, Keith W. Bannister, Erik C. Kool, Nirupam Roy, Ryan Urquhart, Brian D. Metzger, Elias Aydi, Amy J. Mioduszewski, Miriam M. Nyamai, Kirill V. Sokolovsky, Stuart D. Ryder, Laura Chomiuk, Adam Kawash, Jennifer Weston, Justin D. Linford, Thomas J. Nelson, Miroslav D. Filipović, Valério A. R. M. Ribeiro, Jay Strader, Miriam I. Krauss, Tom Finzell, Jennifer L. Sokoloski   +50 more
core   +1 more source

Optical observations of ‘hot’ novae returning to quiescence [PDF]

, 2018
We have monitored the return to quiescence of novae previously observed in outburst as supersoft X-ray sources, using optical photometry of the intermediate polar (IP) V4743 Sgr and the candidate IP V2491 Cyg, and optical spectroscopy of these two and ...
Zemko, P, Cracco, V, Odendaal, A, Ciroi, S, Barsukova, E, Tofflemire, B, Gabdeev, M, Shugarov, S, Valeev, A F, Katysheva, N, Orio, M, Bianchini, A, Goranskij, V   +12 more
core   +2 more sources

Correction of UBV Photometry for Emission Lines

Open Astronomy, 2003
We investigate the effect on U,B,V magnitudes of the removal of emission lines from the spectra of some symbiotic stars and novae during their nebular phases.
Skopal A.
doaj   +1 more source

The UBV Color Evolution of Classical and Symbiotic Novae

Acta Polytechnica CTU Proceedings, 2015
We identified a general course of classical nova outbursts in the B − V vs. U − B diagram. It has been reported that novae show spectra similar to A–F supergiants near optical light maximum.
I. Hachisu, M. Kato
doaj   +1 more source

The ANS Collaboration Monitoring Program

Open Astronomy, 2012
ANS Collaboration is a growing Italian network of small and medium size telescopes performing spectroscopy (low and medium resolution single dispersion, and Echelle high resolution modes) and UBV RCIC CCD photometry of symbiotic stars and novae mainly ...
Munari U., Bacci S., Baldinelli L., Castellani F., Cetrulo G., Cherini G., Dallaporta S., Dallavia G., Englaro A., Frigo A., Graziani M., Luppi V., Maitan A., Marangoni C., Milani A., Moretti S., Moschini F., Ochner P., Siviero A., Righetti G. L., Tomaselli S., Tomasoni S., Vagnozzi A., Valisa P.   +23 more
doaj   +1 more source