Results 81 to 90 of about 10,468 (212)

Spectroscopic Follow-up on Potential Magnetic Cataclysmic Variables

The Astronomical Journal
Spectroscopic observations of nine cataclysmic variables that have been postulated to contain magnetic white dwarfs were obtained to further characterize their classifications, orbital parameters, inclinations, and/or accretion properties.
Paula Szkody, Jan van Roestel, Paul A. Mason, Colin Littlefield, R. Michael Rich, Eric C. Bellm, Filipp D. Romanov, Brian F. Healy, Theophile Jegou du Laz, Russ R. Laher, Ben Rusholme   +10 more
doaj   +1 more source

Variable stars with the Kepler space telescope [PDF]

, 2016
The Kepler space telescope has revolutionised our knowledge about exoplanets and stars and is continuing to do so in the K2 mission. The exquisite photometric precision, together with the long, uninterrupted observations opened up a new way to ...
Molnár, László, Plachy, Emese, Szabó, Róbert   +2 more
core   +1 more source

Idling Magnetic White Dwarf in the Synchronizing Polar BY Cam. The Noah-2 Project

, 2008
Results of a multi-color study of the variability of the magnetic cataclysmic variable BY Cam are presented. The observations were obtained at the Korean 1.8m and Ukrainian 2.6m, 1.2m and 38-cm telescopes in 2003-2005, 56 observational runs cover 189 ...
A. Bianchini, A.A. Henden, A.D. Silber, A.J. Norton, A.R. King, B. Warner, C. Hellier, E.P. Pavlenko, E.P. Pavlenko, E.P. Pavlenko, E.T. Whittaker, G.A. Wynn, H. Ritter, H.R. Richman, H.S. Stockman, I.L. Andronov, I.L. Andronov, I.L. Andronov, I.L. Andronov, I.L. Andronov, I.L. Andronov, I.L. Andronov, I.L. Andronov, I.L. Andronov, I.L. Andronov, I.L. Andronov, I.L. Andronov, J. Patterson, J. Tremko, M. Cropper, M. Livio, M.M. Basko, P. Szkody, P.A. Mason, P.A. Mason, P.A. Mason, P.A. Mason, R. Hudec, R. Schwarz, R.A. Remillard, R.D. Geckeler, R.K. Honeycutt, S. Kafka, T. Neckel, T.A. Somova, V.V. Breus, W. Forman, Y.G. Kim, Y.G. Kim, Y.G. Kim   +49 more
core   +1 more source

Eastern United States: Potential Range for Ecologically Based Coastal Defenses in 2100

Global Change Biology Communications, Volume 1, Issue 1, March 2026.
These maps show where black mangroves can potentially thrive along the US east coast by the end of the 21st century under several climate scenarios. Similar work was done for oyster reefs and saltmarshes. ABSTRACT Eco‐defenses (mangroves, oyster reefs, and saltmarshes) are ecosystems that can help to mitigate the effects of natural hazards and erosion ...
Henry Fox Hausmann, Deb A. Niemeier, Allison Coffey Reilly, Tori Tomiczek   +3 more
wiley   +1 more source

TESS Light Curves of Cataclysmic Variables. V. Improved or Corrected Orbital Periods of 53 Systems

The Astronomical Journal
The long and continuous high-time-resolution coverage of many stars by the Kepler and TESS space missions permit to explore periodic phenomena with a much higher precision than is possible with terrestrial observations.
Albert Bruch
doaj   +1 more source

Outbursts on normal stars. FH Leo misclassified as a novalike variable

, 2005
We present high resolution spectroscopy of the common proper motion system FH Leo (components HD 96273 and BD+07 2411B), which has been classified as a novalike variable due to an outburst observed by Hipparcos, and we present and review the available ...
Boesgaard, Bruntt, Bruntt, Downes, G. Israelian, Girardi, Gonzalez, Grevesse, Halbwachs, Israelian, Israelian, Jeffries, Kazarovets, Kovtyukh, Kupka, L. Schmidtobreick, Martín, Mayor, Morel, N. C. Santos, Naef, Negueruela, Pasquini, Piskunov, Pont, Retter, Rubenstein, Saar, Sandquist, Santos, Santos, Sbordone, Shkolnik, Siess, Steinhauer, T. H. Dall, Thorburn, Valenti   +37 more
core   +1 more source

Late Carboniferous Geomagnetic Field Events Recorded in Post‐Collisional Altenberg–Teplice Caldera, Variscan Belt

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 3, March 2026.
Abstract Characteristic remanent magnetizations isolated from the late Variscan Altenberg–Teplice Caldera exhibit paleomagnetic directions, ranging from those consistent with the expected primary Late Carboniferous geomagnetic field to intermediate directions that significantly diverge from the dipole states.
P. Vitouš, M. S. Petronis, M. S. Foucher, F. Tomek   +3 more
wiley   +1 more source

Optical Spectroscopy of the Most Compact Accreting Binary Harboring a Magnetic White Dwarf and a Hydrogen-rich Donor

The Astrophysical Journal Letters
Accreting white dwarfs (WDs) in close binary systems, commonly known as cataclysmic variables (CVs), with orbital periods below the canonical period minimum (≈80 minutes) are rare.
Ilkham Galiullin, Antonio C. Rodriguez, Kareem El-Badry, Ilaria Caiazzo, Paula Szkody, Pranav Nagarajan, Samuel Whitebook   +6 more
doaj   +1 more source

Phantasmic Encounters in the Arctic: Haunting Materialities Beyond the Ghosts of War

Anthropology of Consciousness, Volume 37, Issue 1, Spring 2026.
ABSTRACT In the vast north, ghostly experiences are common for locals and outsiders alike. Here, we explore how cultural‐natural attributes, like remoteness and extreme seasonal variation, compound experiences of the haunting in visceral ways. This provides the Arctic region with an unusually pronounced baseline of other‐than‐human agency, which in the
Aki Hakonen, Oula Seitsonen
wiley   +1 more source

Studies and observations of ultraviolet and X-ray sources [PDF]

The status of research undertaken with the IUE satellite for programs on strong binary X-ray stars and X-ray globular clusters is summarized.
Fabbiano, G., Geller, M., Gursky, H.
core   +1 more source