Results 11 to 20 of about 31,725 (205)

QU Carinae: a SNeIa progenitor? [PDF]

, 2008
Optical spectra obtained in 2006-07 of the nova-like cataclysmic variable QU Car are studied for radial velocities, line profiles, and line identifications.
Hachisu, Kafka, Kafka, Kenyon, Knigge, Langer, Linnell, R. Anderson, R. K. Honeycutt, Ringwald, S. Kafka, Stephenson, Wallace, Warner   +13 more
core   +2 more sources

CCD-PHOTOMETRY OF CATACLYSMIC VARIABLE ES DRA IN 2001

Odessa Astronomical Publications, 2017
On the base of our 34-day photometry of ES Dra we found its ∼ 20 d light variations with amplitude of 1m.6 and suggest this star could belong to the nova-like subclass of cataclysmic variable stars.
A. V. Baklanov, E. P. Pavlenko, O. I. Dudka   +2 more
doaj   +1 more source

Ground-based variability surveys towards Centaurus A: worthwhile or not? [PDF]

, 2007
Context: Difference imaging has proven to be a powerful technique for detecting and monitoring the variability of unresolved stellar sources in M 31.
Alard, Alard, Alcock, Baade, Baltz, Baltz, Baltz, Bertin, Buzzoni, Calchi Novati, Ciardullo, de Jong, Ferrarese, Gondolo, Gould, Hui, J. T. A. de Jong, K. H. Kuijken, Lomb, P. Héraudeau, Peng, Rejkuba, Riffeser, Riffeser, Schwarzenberg-Czerny, Tisserand, Tomaney, Tonry   +27 more
core   +2 more sources

USING CONSUMER-GRADE DSLR CAMERA AND SMALL TELESCOPE TO FIND NEW VARIABLE STARS

Odessa Astronomical Publications, 2019
Twenty-seven new variable stars were found in DSLR images captured from October 2017 to June 2019. All images were taken using unmod- i?ed Canon EOS 600D DSLR attached to a Sky- watcher 150/750 Newtonian on a motorized equato- rial mount.
M. Yu. Pyatnytskyy
doaj   +1 more source

"INTER-LONGITUDE ASTRONOMY" (ILA) PROJECT: CURRENT HIGHLIGHTS AND PERSPECTIVES. I. MAGNETIC VS. NON-MAGNETIC INTERACTING BINARY STARS

Odessa Astronomical Publications, 2010
We present a review of highlights of our photometric and photo-polarimetric monitoring and mathematical modeling of interacting binary stars of different types classical, asynchronous, intermedi ate polars with 25 timescales corresponding to differ ent ...
I. L. Andronov, K. A. Antoniuk, A. V. Baklanov, V. V. Breus, V. Burwitz, L. L. Chinarova, D. Chochol, P. A. Dubovsky, W. Han, T. Hegedus, A. Henden, L. Hric, Chun-Hwey Kim, Yonggi Kim, S. V. Kolesnikov, I. Kudzej, A. Liakos, P. G. Niarchos, A. Oksanen, L. Patkos, K. Petrik, N. V. Pit', N. M. Shakhovskoy, N. A. Virnina, J. Yoon, S. Zola   +25 more
doaj   +1 more source

The Photometric Period and Variability of the Cataclysmic Variable V849 Herculis (PG 1633+115)

, 2012
We report time-resolved photometry of the cataclysmic variable V849 Her, and measure a period of 0.1414 \pm 0.0030 days (3.394 \pm 0.072 hours). We also present photometry taken over several weeks in 2010 and 2011, as well as light curves from 1995 to ...
Ak, Aungwerojwit, Beers, Berry, F.A. Ringwald, Fleming, Gerald D. Rude, Green, Hellier, Honeycutt, Honeycutt, Jonathan J. Roveto, Kazarovets, Kelly S. Khamvongsa, Lomb, Luppino, Misselt, Munari, Press, Robinson, Rodríguez-Gil, Scargle, Stellingwerf, Thorstensen, Warner   +24 more
core   +1 more source

High speed photometry of faint cataclysmic variables - VI. Car2, V1040 Cen, Ha 075648, IL Nor (Nova Nor 1893), HS Pup (Nova Pup 1963), SDSS J2048-06, CSS 081419-005022 and CSS 112634-100210

, 2009
We have observed 8 faint cataclysmic variable stars photometrically. The nova-like Car2 was extensively sampled but showed little variability. V1040 Cen was observed near the end of a dwarf nova outburst and possessed dwarf nova and quasi-periodic ...
Brian Warner, Downes, Drake, Duerbeck, Duerbeck, Eggen, Gill, Hoard, Hoard, Kato, Kawka, Motch, O'Donoghue, Patrick A. Woudt, Patterson, Pretorius, Strohmeier, Szkody, Szkody, Warner, Warner, Warner, Wickramasinghe, Woudt, Woudt, Woudt, Woudt, Woudt, Zwitter   +28 more
core   +1 more source

Remarkable changes in the near-infrared spectrum of the nova-like variable V4332 Sgr

, 2003
We report on recent near-IR observations of V4332 Sgr - the nova-like variable that erupted in 1994. Its rapid, post-outburst evolution to a cool M type giant/supergiant, soon after its outburst, had showed that it was an unusual object differing from ...
Barnbaum C., Dipankar P. K. Banerjee, Koornneef J., Nagarhalli M. Ashok, Olli Launila, Tsuji T., Watson P. Varricatt   +6 more
core   +1 more source

The 2011 Eruption of the Recurrent Nova T Pyxidis; the Discovery, the Pre-eruption Rise, the Pre-eruption Orbital Period, and the Reason for the Long Delay [PDF]

, 2013
We report the discovery by M. Linnolt on JD 2455665.7931 (UT 2011 April 14.29) of the sixth eruption of the recurrent nova T Pyxidis. This discovery was made just as the initial fast rise was starting, so with fast notification and response by observers ...
Carstens, Rolf, Dillon, William G., Kerr, Stephen, Landolt, Arlo U., Linnolt, Michael, Myers, Gordon, Nelson, Peter, Plummer, Alan, Pojmanski, Grzegorz, Richards, Thomas, Schaefer, Bradley E., Streamer, Margaret, Stubbings, Rod   +12 more
core   +3 more sources

The AH Pictoris Syndrome: Continuous Trains of Stunted Outbursts in Novalike Variables

The Astrophysical Journal
Novalike variables are a subgroup of cataclysmic variables (CVs) that—unlike dwarf novae—do not exhibit strong brightenings in their long-term light curves.
Albert Bruch
doaj   +1 more source