Results 131 to 140 of about 141,416 (254)
OUTBURST CYCLICITY OF DWARF NOVA VZ AQUARII
Odessa Astronomical Publications, 2017 New linear elements for outbursts of VZ Aqr from 1904 to 1987 were obtained with P0 = 50.4053d. Two states of outburst activity are distinguished with cycle lengths 47.128d and 55.041d, replacing each other during Π = 13.2yr and accompanied by a maximum ...
L. I. Shakun
doaj +1 more source
Hubble Space Telescope STIS Spectroscopy of Long-Period Dwarf Novae in Quiescence [PDF]
, 2008 We present the results of a synthetic spectral analysis of HST STIS spectra of five long-period dwarf novae obtained during their quiescence to determine the properties of their white dwarfs, which are little known for systems above the CV period gap ...
E. Sion +7 more
semanticscholar +1 more source
EVIDENCE OF A BROWN DWARF IN THE ECLIPSING DWARF NOVA Z CHAMAELEONIS
The Astrophysical Journal, 2009 We presented three new CCD observations of light minima of Z Chamaeleonis. All 187 available times of light minimum including 37 photographic data are compiled, and a new orbital period analysis is made by means of the standard O - C technique. The O - C diagram of Z Chamaeleonis presents a cyclical periodic change of similar to 32.57 yr with a high ...
Dai, Zhibin +2 more
openaire +3 more sources
A Trypsin‐Like Serine Protease ZmNAL1a Fine‐Tunes Maize Floral Transition and Flowering Time
Advanced Science, Volume 13, Issue 10, 18 February 2026.This study identifies a trypsin‐like serine protease, ZmNAL1a, that moves from leaves to the shoot apical meristem. ZmNAL1a promotes the floral transition by degrading TOPLESS‐like corepressor REL2, which thereby enhances the expression of key flowering genes through elevating histone acetylation and relieving REL2–ZmEREBP147‐mediated transcriptional ...
Nan Li +15 more
wiley +1 more source
Low-metallicity Nova Explosions: A Site for Weak rp-process Nucleosynthesis
The Astrophysical JournalClassical novae are common cataclysmic events involving a binary system of a white dwarf and a main-sequence or red giant companion star. In metal-poor environments, these explosions produce ejecta differently from their solar counterparts due to the ...
Athanasios Psaltis +3 more
doaj +1 more source
Crop Science, Volume 66, Issue 1, January/February 2026.Abstract Elderberries (Sambucus spp.) have been valued as food and medicine around the world for millennia. Elderberry products are experiencing an increase in demand as ongoing research substantiates their putative health benefits. European elderberries (Sambucus nigra subsp. nigra) are an established industry in Europe and are often imported into the
Elizabeth Prenger +2 more
wiley +1 more source
Nuclear Thermometers for Classical Novae [PDF]
, 2012 Classical novae are stellar explosions occurring in binary systems, consisting of a white dwarf and a main sequence companion. Thermonuclear runaways on the surface of massive white dwarfs, consisting of oxygen and neon, are believed to reach peak ...
Downen, Lori N. +3 more
core +3 more sources
Late Superhumps in WZ Sge-Type Dwarf Novae [PDF]
, 2008 We report on the detection of very stable modulations with periods unexpectedly (~0.5%) longer than superhump periods during the slowly fading stage of WZ Sge-type superoutbursts in three systems, GW Lib, V455 And and WZ Sge.
T. Kato, H. Maehara, B. Monard
semanticscholar +1 more source
Ecology and Evolution, Volume 16, Issue 1, January 2026.Delineation of Important Shark and Ray Areas (ISRAs) In the Western Indian Ocean was enhanced by the verification and incorporation of unpublished records. Even with this expanded dataset, ~99% of ISRA coverage fell outside of fully protected, no‐take MPAs.
Jesse E. M. Cochran +132 more
wiley +1 more source
Conservation challenges and opportunities for native apple (Malus) species in Canada
PLANTS, PEOPLE, PLANET, Volume 8, Issue 1, Page 134-156, January 2026.Apple, one of the world's most widely cultivated and economically important fruit crops, has two wild relatives native to Canada. In this review, we describe the importance of these native apple species to Indigenous heritage and the current threats the species faces due to pests, diseases, and habitat loss.
Terrell T. Roulston +13 more
wiley +1 more source