Results 1 to 10 of about 141,416 (254)

Fundamental Properties of Novae in M31

The Astrophysical Journal Supplement Series
The peak luminosities and rates of decline for a large sample of novae recently published by Clark et al. have been analyzed using the Yaron et al. nova models to estimate fundamental properties of the M31 nova population.
Allen W. Shafter, Kamil Hornoch
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X-Ray Flashes on Helium Novae

The Astrophysical Journal
A helium nova occurs on a white dwarf (WD) accreting hydrogen-deficient matter from a helium star companion. When the mass of a helium envelope on the WD reaches a critical value, unstable helium burning ignites to trigger a nova outburst.
Mariko Kato, Izumi Hachisu
doaj   +1 more source

ASASSN-16dv: Superhumps in a Long-period X-Ray-luminous Dwarf Nova

The Astronomical Journal
Combining a long-term light curve, four-color rapid photometry, and spectroscopic and X-ray observations with a 27-day time base TESS light curve, we present the first dedicated study of ASASSN-16dv, detected as a transient in the All-Sky Automated ...
Albert Bruch, Raimundo Lopes de Oliveira, Amanda Silva de Araujo, Romualdo Eleutério, Angela Cristina Krabbe, Koji Mukai   +5 more
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Mapping edaphic soils' conditions to identify conservation targets for pine barren and sandplain ecosystems in New York State. [PDF]

Ecol Evol, 2022
Corbin JD, Flatland EL.
europepmc   +1 more source

Binary Parameters for the Recurrent Nova T Coronae Borealis

The Astrophysical Journal
T CrB is among the brightest novae. It is recurrent with outbursts happening approximately every 80 yr. The next outburst is imminent, expected in 2025. The T CrB binary consists of an M4 III red giant (RG) secondary and a white dwarf (WD) primary.
Kenneth H. Hinkle, Pranav Nagarajan, Francis C. Fekel, Joanna Mikołajewska, Oscar Straniero, Matthew W. Muterspaugh   +5 more
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A TESS view of post-eruption variability in novae V1405 Cas, V1716 Sco, and V1674 Her

Astronomy & Astrophysics
We analyzed TESS archival data of three novae after recent outbursts, searching for the orbital and white dwarf (WD) rotation period and possible variations in these periods.
Luna G. J. M., Dobrotka A., Orio M.
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Upper Bound of Ejecta Mass in a Nova Outburst

The Astrophysical Journal
We present the maximum ejecta mass ${({M}_{{\rm{ej}}})}_{{\rm{\max }}}$ and the maximum ratio of ejecta mass and accreted mass ${({M}_{{\rm{ej}}}/{M}_{{\rm{acc}}})}_{{\rm{\max }}}$ of a nova for various white dwarf (WD) masses ( M _WD  = 0.6–1.38 M _ ...
Izumi Hachisu, Mariko Kato
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Phosphorus-rich stars with unusual abundances are challenging theoretical predictions. [PDF]

Nat Commun, 2020
Masseron T, García-Hernández DA, Santoveña R, Manchado A, Zamora O, Manteiga M, Dafonte C.   +6 more
europepmc   +1 more source

Synergies of THESEUS with the large facilities of the 2030s and guest observer opportunities. [PDF]

Exp Astron (Dordr), 2021
Rosati P, Basa S, Blain AW, Bozzo E, Branchesi M, Christensen L, Ferrara A, Gomboc A, O'Brien PT, Osborne JP, Rossi A, Schüssler F, Spurio M, Stergioulas N, Stratta G, Amati L, Casewell S, Ciolfi R, Ghirlanda G, Grimm S, Guetta D, Harms J, Le Floc'h E, Longo F, Maggiore M, Mereghetti S, Oganesyan G, Salvaterra R, Tanvir NR, Turriziani S, Vergani SD, Balman S, Caruana J, Erkut MH, Guidorzi G, Frontera F, Martin-Carrillo A, Paltani S, Porquet D, Sergijenko O.   +39 more
europepmc   +1 more source

The Long-term Activity of the Postnovae Q Cygni and BK Lyncis

The Astronomical Journal
We show the postnova activity of Q Cyg (Nova Cyg 1876) and BK Lyn (probable Nova Lyn 101). We use both CCD and photographic photometric observations.
Vojtěch Šimon
doaj   +1 more source