output
19962026
most citedDesign Concepts for the Cherenkov Telescope Array

902 citations

Showing 2004Show all

8 papers · 1 filter

astro-ph2004★ 26 cited

The History of the Mysterious Eclipses of KH 15D II. Asiago, Kiso, Kitt Peak, Mt. Wilson, Palomar, Tautenburg and Rozhen Observatories, 1954-97

John Asher Johnson, Joshua N. Winn, Francesca Rampazzi +6

The unusual pre-main-sequence binary star named KH 15D undergoes remarkably deep and long-lasting periodic eclipses. Some clues about the reason for these eclipses have come from t…

astro-ph2004★ 1 cited

Calibrated Tully-Fisher relations for edge-on galaxies in the BVRI system

O. Stanchev, P. Nedialkov, Ts. Georgiev

Calibrated Tully-Fisher relations ''absolute magnitude - HI line width'' for spiral galaxies oriented edge-on are derived from published data. The slope of the linear fits, especia…

astro-ph2004★ 34 cited

Short-term optical variability of high-redshift QSO's

R. Bachev, A. Strigachev, E. Semkov

This paper presents results of a search for short-term variability in the optical band of selected high-luminosity, high-redshift radio-quiet quasars. Each quasar has been monitore…

astro-ph2004★ 6 cited

Archival light curves from the Bamberg Sky Patrol - CFOctantis, 1964-1976

J. L. Innis, A. P. Borisova, D. W. Coates +1

We use the archive of the Bamberg Sky Patrol to obtain light curves of the active K subgiant CF Octantis for the interval 1964-1976. Digitised images of the field near CF Oct were…

astro-ph2004★ 119 cited

Average UV Quasar Spectra in the Context of Eigenvector 1: A Baldwin Effect Governed by Eddington Ratio?

R. Bachev, P. Marziani, J. W. Sulentic +3

We present composite UV spectra for low redshift Type 1 AGN binned to exploit the information content of the Eigenvector 1 (E1) parameter space. Composite spectra allow a decomposi…

astro-ph2004

BVR photometry of the resolved dwarf galaxy Ho IX

Tsvetan B. Georgiev, Dominik J. Bomans

We present BVR CCD photometry down to limiting magnitude B=23.5 mag for 232 starlike objects and 11 diffuse objects in a 5.4' x 5.4' field of Ho IX. The galaxy is a gas-rich irregu…

astro-ph2004★ 23 cited

Accretion Disc Evolution in DW Ursae Majoris: A Photometric Study

V. Stanishev, Z. Kraicheva, H. M. J. Boffin +3

We present an analysis of CCD photometric observations of the eclipsing novalike cataclysmic variable DW UMa obtained in two different luminosity states: high and intermediate. The…

astro-ph2004★ 19 cited

Flickering variability of T Coronae Borealis

R. Zamanov, M. F. Bode, V. Stanishev +1

We present electro-photometric UBV and high-speed U-band flickering observations of the recurrent nova T CrB during a period when its U brightness varies by more than 2 mag. The V…