Results 41 to 50 of about 838,554 (289)

The nova KT Eri Is a recurrent nova with a recurrence time-scale of 40–50 yr

open access: yesMonthly Notices of the Royal Astronomical Society, 2022
ABSTRACT KT Eridani was a very fast nova in 2009 peaking at V  = 5.42 mag. We marshal large data sets of photometry to finally work out the nature of KT Eri. From the TESS light curve, as confirmed with our radial velocity curve, we find an orbital period of 2.61595 d.
Bradley E Schaefer   +3 more
openaire   +2 more sources

Difference between the optical flickering colours of cataclysmic variables and symbiotic recurrent novae [PDF]

open access: yes, 2015
Institute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, 72 Tsarigradsko shose,BG-1784, Sofia, BulgariaReceived 2 September 2014, accepted 2014 Dec 04Published online 2015 Mar 01Key words Stars: binaries – novae ...
R. Zamanov   +4 more
semanticscholar   +1 more source

Insights into the evolution of symbiotic recurrent novae from radio synchrotron emission: V745 Scorpii and RS Ophiuchi [PDF]

open access: yes, 2015
We present observations at 610 and 235 MHz using the Giant Metrewave Radio Telescope (GMRT) of the recurrent nova V745 Scorpii which recorded its last outburst on 2014 February 6.
N. Kantharia   +8 more
semanticscholar   +1 more source

Snowflakes in a Furnace: Formation of CO and Dust in a Recurrent Nova Eruption

open access: yesThe Astrophysical Journal Letters, 2023
We report the detection of carbon monoxide (CO) and dust, formed under hostile conditions, in recurrent nova V745 Sco about 8.7 days after its 2014 outburst. The formation of molecules or dust has not been recorded previously in the ejecta of a recurrent
D. P. K. Banerjee   +9 more
doaj   +1 more source

Neon Novae, Recurrent Novae, and Type I Supernovae [PDF]

open access: yes, 1991
Over the past few years, we have been investigating the effects of accretion onto massive white dwarfs and its implications for their growth in mass toward the Chandrasekhar limit, in attempts to identify a possible relationship between SN I and novae.
S. Starrfield   +3 more
openaire   +1 more source

V2487 Oph 1998: a post nova in an intermediate polar

open access: yesEPJ Web of Conferences, 2014
V2487 Oph (Nova Oph 1998) is a classical nova that exploded in 1998. XMM-Newton observations performed between 2 and 9 years after the explosion showed emission related to restablished accretion, and indicative of a magnetic white dwarf.
Hernanz Margarita
doaj   +1 more source

THE NOVA SHELL AND EVOLUTION OF THE RECURRENT NOVA T PYXIDIS [PDF]

open access: yesThe Astrophysical Journal, 2009
T Pyxidis is the prototypical recurrent nova (RN) with a mysterious nova shell. We report new observations of the shell with HST. The knots in the shell are expanding with velocities 500-715 km/s, for a distance of 3500 pc. The fractional expansion of the knots is constant, and this implies no significant deceleration.
Schaefer, Bradley E.   +2 more
openaire   +2 more sources

The RS Oph Outburst of 2021 Monitored in X-Rays with NICER

open access: yesThe Astrophysical Journal, 2023
The 2021 outburst of the symbiotic recurrent nova RS Oph was monitored with the Neutron Star Interior Composition Explorer Mission (NICER) in the 0.2–12 keV range from day one after the optical maximum, until day 88, producing an unprecedented, detailed ...
Marina Orio   +21 more
doaj   +1 more source

The Hot Components in the Recurrent Novae T Pyxidis, IM Norma, CI Aquilae and in the Dwarf Nova U Geminorum

open access: yesProceedings of The Golden Age of Cataclysmic Variables and Related Objects IV — PoS(GOLDEN 2017), 2017
We report on the latest results from Hubble Space Telescope (HST) far ultraviolet spectroscopy with the Cosmic Object Spectrograph (COS), of the short orbital period recurrent novae (RNe) T Pyxidis, IM Norma (the first ever FUV spectrum of this RN) and
E. Sion, P. Godon
semanticscholar   +1 more source

Targeting TNBC: core–shell polycationic polyurea dendrimers with inherent anticancer activity

open access: yesFEBS Open Bio, EarlyView.
Core–shell polycationic PURE dendrimers were tested in TNBC‐derived tumor models. Both formulations selectively targeted TNBC and effectively reduced tumor volume. PUREG4‐OEI48 suppressed tumor growth without detectable toxicity, whereas PUREG4‐OCEI24, despite showing efficacy, induced hepatic toxicity.
Adriana Cruz   +9 more
wiley   +1 more source

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