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We report the first result from our survey of rapid variability in symbiotic binaries: the discovery of a persistent oscillation at P=1682.6 +- 0.6 s in the optical emission from the prototype symbiotic, Z Andromedae. The oscillation was…

Astrophysics · Physics 2009-10-31 J. L. Sokoloski , Lars Bildsten

We present new long-term CCD photometry for EP And acquired during the period 2007 to 2012. The light curves display total eclipses at primary minima and season-to-season light variability. Our synthesis for all available light curves…

Solar and Stellar Astrophysics · Physics 2015-06-12 Jae Woo Lee , Tobias Cornelius Hinse , Jang-Ho Park

We have discovered a detached pair of white dwarfs (WDs) with a 12.75 min orbital period and a 1,315 km/s radial velocity amplitude. We measure the full orbital parameters of the system using its light curve, which shows ellipsoidal…

Astrophysics of Galaxies · Physics 2015-05-28 Warren R. Brown , Mukremin Kilic , J. J. Hermes , Carlos Allende Prieto , Scott J. Kenyon , D. E. Winget

We calculated physical and orbital properties for 2M06464003+0109157, a 1.06 day eclipsing double lined spectroscopic binary. We modelled the system's ASAS-SN and TESS light curves, measuring the system's inclination and radii of each…

Solar and Stellar Astrophysics · Physics 2021-03-31 Annaliese Miller , Marina Kounkel , Chase Boggio , Kevin Covey , Adrian M. Price-Whelan

The new multi-color $BVRI$ photometric light curves of the short-period eclipsing binary GSC 3576-0170 were obtained on two consecutive nights (October 5 and 6, 2009). With the 2003 version of Wilson-Devinney program, the precise…

Solar and Stellar Astrophysics · Physics 2011-12-09 Zhang Liyun , Jing Jianghong , Tang Yanke , Zhang Xiliang

We examined light curves of 1138 stars brighter than 18.0 mag in the $I$ band and less than a mean magnitude error of 0.1 mag in the $V$ band from the OGLE-III eclipsing binary catalogue, and found 90 new binary systems exhibiting apsidal…

Solar and Stellar Astrophysics · Physics 2025-03-25 K. Hong , J. W. Lee , S. -L. Kim , J. -R. Koo , C. -U. Lee

We present the binary model and the eclipse timing variations of the eclipsing binary RR Cae, which consists of a white dwarf eclipsed by an M-type dwarf companion. The multi-wavelength optical photometry from the Transiting Exoplanet…

We present results of our spectroscopic observations of nine detached eclipsing binaries (DEBs), selected from the $Kepler$ Eclipsing Binary Catalog, that only show one set of spectral lines. Radial velocities (RVs) were calculated from the…

Solar and Stellar Astrophysics · Physics 2017-02-14 K. G. Hełminiak , N. Ukita , E. Kambe , S. K. Kozłowski , P. Sybilski , M. Ratajczak , H. Maehara , M. Konacki

We present the first results of an asteroid photo--polarimetry program started at Asiago--Cima Ekar Observatory. The aim of our survey is to estimate diversity in polarimetric properties of asteroids belonging to different taxonomic and…

[Abridged] We report Warm Spitzer full-orbit phase observations of WASP-12b at 3.6 and 4.5 micron. We are able to measure the transit depths, eclipse depths, thermal and ellipsoidal phase variations at both wavelengths. The large amplitude…

Earth and Planetary Astrophysics · Physics 2015-06-03 N. B. Cowan , P. Machalek , B. Croll , L. M. Shekhtman , A. Burrows , D. Deming , T. Greene , J. L. Hora

We present the results of observational campaigns of asteroids performed at Asiago Station of Padova Astronomical Observatory and at M.G. Fracastoro Station of Catania Astrophysical Observatory, as part of the large research programme on…

Astrophysics · Physics 2009-11-13 Davide Gandolfi , Massimo Cigna , Daniele Fulvio , Carlo Blanco

The OSIRIS camera onboard Rosetta successfully acquired images of asteroid 2867 Steins through a variety of color filters during the flyby on 5 September 2008. The best images of this 5 km diameter asteroid have a resolution of 78 meters…

Earth and Planetary Astrophysics · Physics 2017-02-02 S. E. Schröder , H. U. Keller , P. Gutierrez , S. F. Hviid , R. Kramm , W. Sabolo , H. Sierks

We report our discovery of an extremely rare, low mass, quadruple-lined spectroscopic binary BD-22 5866 (=NLTT 53279, integrated spectral type = M0 V), found during an ongoing search for the youngest M dwarfs in the solar neighborhood. From…

OGLE-LMC-DPV-065 is an interacting binary whose double-hump long photometric cycle remains hitherto unexplained. We analyze photometric time series available in archive datasets spanning 124 years and present the analysis of new…

Recent work has shown that the correlation between SDSS colors and optical albedo can be used to estimate asteroid sizes from optical data alone. We revisit a correlation between SDSS colors and optical albedo for asteroids, with the albedo…

Earth and Planetary Astrophysics · Physics 2021-01-06 Vedrana Ivezić , Željko Ivezić

Context. Icy dwarf planets are key for studying the chemical and physical states of ices in the outer solar system. The study of secular and rotational variations gives us hints of the processes that contribute to the evolution of their…

Earth and Planetary Astrophysics · Physics 2015-05-13 V. Lorenzi , N. Pinilla-Alonso , J. Licandro

HS0907+1902 was recently discovered to be one of a handful of deeply eclipsing dwarf novae with periods longward of the 2 -- 3 hr `gap'. This paper presents orbit-resolved spectra and time series photometry of an eclipse. The apparent…

Astrophysics · Physics 2009-10-31 John R. Thorstensen

We present new photometric observations in the BVRI bands of the double-lined eclipsing binary BD+05 706 conducted over three observing seasons, as well as new X-ray observations obtained with the ROSAT satellite covering a full orbital…

Context. TW Draconis is one of the best studied Algol-type eclipsing binaries. There is significant evidence for miscellaneous physical processes between interacting binary components manifesting themselves by period and light curve…

Solar and Stellar Astrophysics · Physics 2011-03-31 M. Zejda , M. Wolf , M. Slechta , Z. Mikulasek , J. Zverko , P. Svoboda , J. Krticka , J. Janik , H. Bozic

WW Aurigae is a detached eclipsing binary composed of two metallic-lined A-type stars orbiting each other every 2.5 days. We have determined the masses and radii of both components to accuracies of 0.4 and 0.6 percent, respectively. From a…

Astrophysics · Physics 2010-12-02 John Southworth , B Smalley , P F L Maxted , A Claret , P B Etzel