Results 91 to 100 of about 141,416 (254)

An orbital period analysis of the dwarf novae OY Carinae

, 2015
By using our twelve new CCD times of light minimum of OY Carinae COY Car) together with those collected from the literature, it is found that the O-C curve of OY Car shows a downward parabola with an amplitude of 27.8 s and a cyclic change of a period 14.
Z.-T. Han, S. Qian, E. Lajús, W. Liao, Jian-Na Zhang   +4 more
semanticscholar   +1 more source

Systematics of Dwarf Novae [PDF]

Astrophysics and Space Science, 1987
AbstractFrom about 30 Dwarf Novae with the best determined distances the following relationships are found.(i)a tight correlation between absolute magnitude at maximum light, Mv (max), and orbital period, P.(ii)a correlation between Mv (min) and P showing wide scatter.(iii)a correlation between Mv (mean), the mean absolute magnitude averaged over ...
openaire   +1 more source

Planting date and seeding rate effect on winter malting barley grain yield and quality in northwest Ohio

Crop, Forage &Turfgrass Management, Volume 12, Issue 1, June 2026.
Abstract With the growth in the craft brewing industry, farmers are interested in producing winter malting barley (Hordeum vulgare L.). Timely barley planting is important; however, wet weather often results in delays. The objective of this experiment was to identify the agronomic optimum seeding rate (the seeding rate at which yield is maximized) for ...
Laura E. Lindsey, Gregory J. McGlinch, Eric Richer   +2 more
wiley   +1 more source

A SPOT STRUCTURE OF ACCRETION DISK OF U GEMINORUM

Odessa Astronomical Publications, 2017
On the basis of modelling of emission lines of dwarf novae U Gem, conclusion is made, that the observed orbital phase change of model parameters of a accretion disk can not be explained in frameworks of Keplerian velocity field in a disk.
N. V. Borisov, V. V. Neustroev
doaj   +1 more source

Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae

, 2009
We systematically surveyed period variations of superhumps in SU UMa-type dwarf novae based on newly obtained data and past publications. In many systems, the evolution of superhump period are found to be composed of three distinct stages: early ...
Aggleton, Matt, Aho, Mika, Andreev, Maksim, Arai, Akira, Baba, Hajime, Baklanov, Alexander, Beaulieu, Kevin, Bedient, James, Billings, Gary, Bolt, Greg, Boyd, David, Brady, Steve, Buczynski, Denis, Butterworth, Neil D., Chochol, Drahomír, Cook, Lewis M., Crabtree, Dustin, Crawford, Tim, Cárdenas, A. A., Dančíková, Radka, Davis, Stacey, Davis, Tracy, De Ponthiere, Pierre, Douzu, Ken-ichi, Dubovský, Pavol A., Fiaschi, Marco, Garradd, Gordon, Gazeas, Kosmas D., Geary, Keith, Gomez, Tomas L., Good, Gerry A., Gualdoni, Carlo, Hambsch, Franz-Josef, Heathcote, Bernard, Henden, Arne, Hynek, Tomáš, Imada, Akira, Imamura, Kazuyoshi, Ishioka, Ryoko, Itoh, Hiroshi, Iwamatsu, Hidetoshi, James, Nick, Jensen, Lasse-Teist, Julian, Wm Mack, II, Kato, Taichi, Katysheva, Natalia, Kedzierski, Piotr, Kehusmaa, Petri, Kern, Jim, Khramtsova, Maria, Kida, Mayumi, Kinnunen, Timo, Kiyota, Seiichiro, Kocián, Radek, Koizumi, Mitsuo, Kolasa, Marek, Koppelman, Michael D., Krajci, Thomas, Kriebel, Wolfgang, Král, Lukáš, Kubota, Kaori, Kudzej, Igor, Kunihiro, Kenji, Kunitomi, Nanae, Kučáková, Hana, Liller, William, Maehara, Hiroyuki, Mallia, Franco, Martin, Brian, Maruoka, Koichi, Masi, Gianluca, Matsumoto, Katsura, Michel, Raul, Miller, Ian, Miyashita, Atsushi, Moilanen, Marko, Monard, Berto, Morelle, Etienne, Morikawa, Koichi, Moritani, Yuuki, Mularczyk, Krzysztof, Muyllaert, Eddy, Nakajima, Kazuhiro, Nelson, Peter, Niarchos, Panos G., Nishi, Yuichi, Nogami, Daisaku, Novák, Rudolf, Ohashi, Hiroyuki, Ohshima, Tomohito, Oksanen, Arto, Olech, Arkadiusz, Omodaka, Toshihiro, Pavlenko, Elena P., Pickard, Roger D., Pietz, Jochen, Pojmański, Grzegorz, Poyner, Gary, Reszelski, Maciej, Retter, Alon, Richards, Tom, Richmond, Michael, Ripero, Jose, Rosenbush, Alexander E., Sakai, Nobuyuki, Sano, Yasuo, Santallo, Roland, Sasada, Mahito, Schmeer, Patrick, Shears, Jeremy, Shugarov, Sergey Yu., Simonsen, Mike, Soejima, Yuichi, Staels, Bart, Starkey, Donn R., Stockdale, Chris, Stubbings, Rod, Sugiyasu, Kei, Taguchi, Hiroki, Tanabe, Kenji, Tanaka, Junpei, Tanaka, Sawa, Tikkanen, Petri, Torii, Ken'ichi, Uemura, Makoto, Ueoka, Rie, Urbančok, Ľubomír, Vanmunster, Tonny, Virtanen, Jani, Volkov, Igor, Voloshina, Irina, Walker, Stan, Yamada, Norimi, Yasui, Hideki, Yushchenko, Alexander V., Zloczewski, Kamil, Ögmen, Yenal, Šťastný, Petr   +137 more
core   +1 more source

Parasitic Plant–Host Interactions: Molecular Mechanisms and Agricultural Resistance Strategies

Advanced Science, Volume 13, Issue 16, 18 March 2026.
Parasitic plants devastate global agriculture through sophisticated molecular interactions with host crops. This review synthesizes current understanding of parasitic plant‐host interactions, from strigolactone‐mediated germination and haustorium formation to host defense mechanisms.
Jiayang Shi, Qi Xie, Feifei Yu
wiley   +1 more source

A Deep Precursor Dip–Main Superoutburst Sequence in VW Hydri Observed with TESS: High-cadence Constraints on the Thermal–Tidal Instability Model

The Astrophysical Journal
We present 120 s cadence TESS observations of three superoutbursts of the SU UMa-type dwarf nova VW Hydri. Two events (SO2 in Sectors 87+88 and SO3 in Sector 93) exhibit a temporally pronounced precursor dip followed by a rapid rise into the main ...
Bisi Bernard Ogunwale, Michael Shara, Avi Shporer, Dafne Guetta, Lev Tal-Or   +4 more
doaj   +1 more source

Nucleosynthesis in ONeMg Novae: Models versus Observations to Constrain the Masses of ONeMg White Dwarfs and Their Envelopes [PDF]

, 1999
Nucleosynthesis in ONeMg novae has been investigated with the wide ranges of three parameters, i.e., the white dwarf mass, the envelope mass at ignition, and the initial composition.
Andrea J., Boffin H. M. J., Chochol D., Coc A., D'Antona F., Diehl R., Forestini M., Hatano K., Iyudin A. F., Ken'ichi Nomoto, Kercek A., Kolb U., Kubono S., Masa‐aki Hashimoto, Matteucci F., Meynet G., Paresce F., Prantzos N., Retter A., Saizar P., Shinya Wanajo, Snijders M. A. J., Sugimoto D., Taylor A. R., Vanlandingham K. M., Vanlandingham K. M., Wagner R. M., Walter R., Weiss A., Wiescher M., Williams R. E.   +30 more
core   +2 more sources

Distances and absolute magnitudes of dwarf novae: murmurs of period bounce [PDF]

, 2009
We redetermine the relationship between absolute magnitude and orbital period for dwarf novae, based on 46 stars with good distance estimates. This improves upon Warner's previous relation, building upon today's improved estimates of distance and binary ...
J. Patterson
semanticscholar   +1 more source

Radiation from dwarf nova discs

Physics Reports, 1999
We use the Shaviv and Wehrse (1991) code to model the vertical structure and the emission properties of quiescent dwarf nova discs. We find that in the case of HT Cas the quiescent disc must be optically thin, in contradiction with the requirements of the standard disc instability model. We find a viscosity parameter alpha > 1. Although this is much
Idan, Irit, Lasota, Jean-Pierre, Hameury, Jean-Marie, Shaviv, Giora   +3 more
openaire   +2 more sources