Results 11 to 20 of about 85,351 (144)

Energy distributions of symbiotic novae [PDF]

open access: yesThe Astrophysical Journal, 1991
The IRAS low-resolution spectra of three recent symbiotic novae (HM Sge, V1016 Cyg and RR Tel) are fitted with a dust continuum radiative transfer model. It is found that the dust shells are detached from the photosphere and that sizes of the inner radii are correlated with times since outburst.
Bryan, GL, Kwok, S
openaire   +5 more sources

Recurrent and symbiotic novae in the OGLE data [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2014
We analyse long-term optical photometry for two Galactic recurrent novae (V745 Sco and V3890 Sgr) and one Large Magellanic Cloud object (Nova LMC 1990b) observed over several years by the Optical Gravitational Lensing Experiment (OGLE) sky survey. We do not find variability with the previously claimed orbital period of V745 Sco.
Mroz, P.   +11 more
core   +5 more sources

Long-Term Photometry of Very Slow Novae

open access: yesOpen Astronomy, 2003
Long-term photographic, photoelectric and recent CCD photometry of the classical nova V723 Cas and symbiotic novae V1329 Cyg, PU Vul, V1016 Cyg and HM Sge were used to find their orbital periods.
Chochol D.   +3 more
doaj   +3 more sources

Evolution of the symbiotic nova RX Puppis [PDF]

open access: yesAIP Conference Proceedings, 2002
To appear in in M. Hernanz, J.
Mikołajewska, Joana   +5 more
openaire   +6 more sources

Symbiotic novae [PDF]

open access: yesContributions of the Astronomical Observatory Skalnaté Pleso
(Invited Review) According to modern definition, a symbiotic nova is an otherwise normal nova (i.e. powered by explosive thermonuclear burning) that erupts within a symbiotic star, which is a binary where a WD accretes from a cool giant companion. Guided primarily by the very well observed eruptions of RS Oph in 2006 and 2021, and that of V407 Cyg in ...
Munari, Ulisse
core   +4 more sources

Recurrent Novae — A Review [PDF]

open access: yesActa Polytechnica CTU Proceedings, 2015
In recent years, recurrent nova eruptions are often observed very intensely in wide range of wavelengths from radio to optical to X-rays. Here I present selected highlights from recent multi-wavelength observations. The enigma of T Pyx is at the heart of
K. Mukai
doaj   +4 more sources

Analysis of the suitability for ecotourism in Beira Baixa region using a spatial decision support system based on a geographical information system

open access: yesRegional Science Policy &Practice, EarlyView., 2022
Abstract Ecotourism can contribute to the conservation of environmental values, as well as to the development of positive synergies between agents in the tourism sector, tourists and the local population. The growing interest in tourism offers with low environmental impact, which support the local economy, translates into a competitive advantage for ...
Luís Quinta‐Nova, Dora Ferreira
wiley   +1 more source

Evidence for Multiple Shocks from the γ-Ray Emission of RS Ophiuchi

open access: yesThe Astrophysical Journal, 2023
In 2021 August, the Fermi Large Area Telescope, H.E.S.S., and MAGIC detected GeV and TeV γ -ray emission from an outburst of recurrent nova RS Ophiuchi. This detection represents the first very high-energy γ -rays observed from a nova, and it opens a new
Rebecca Diesing   +6 more
doaj   +1 more source

Lepto-hadronic Interpretation of 2021 RS Ophiuchi Nova Outburst

open access: yesThe Astrophysical Journal, 2023
Very-high-energy (VHE; 100 GeV < E ≤ 100 TeV) and high-energy (HE; 100 MeV < E ≤ 100 GeV) gamma rays were observed from the symbiotic recurrent nova RS Ophiuchi (RS Oph) during its outburst in 2021 August by various observatories, such as the High Energy
Agnibha De Sarkar   +4 more
doaj   +1 more source

Symbiotic Star T CrB as an Extreme SU UMa–type Dwarf Nova

open access: yesThe Astrophysical Journal Letters, 2023
T CrB is a symbiotic recurrent nova that exhibits quiescent and active phases between its classical nova eruptions. The statistical properties of these active phases have been poorly studied thus far. Because of that their nature remained unknown.
Krystian Iłkiewicz   +2 more
doaj   +1 more source

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