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The Dancing Sky: 6 years of night sky observations at Cerro Paranal
F. Patat
The present work provides the results of the first six years of operation of the systematic night-sky monitoring at ESO-Paranal (Chile). The UBVRI night-sky brightness was estimate…
Reflections on Reflexions: II. Effects of Light Echoes on the luminosity and spectra of Type Ia Supernovae
F. Patat, S. Benetti, E. Cappellaro +1
In this paper we present and discuss the effects of scattered light echoes (LE) on the luminosity and spectral appearance of Type Ia Supernovae (SNe). After introducing the basic c…
The star cluster Collinder 232 in the Carina complex and its relation to Trumpler 14/16
Giovanni Carraro, Martino Romaniello, Paolo Ventura +1
In this paper we present and analyze new CCD photometry down to 21 in the region of the young open cluster Collinder 232, located in the Carina spiral arm, and…
A robust algorithm for sky background computation in CCD images
F. Patat
In this paper we present a non-interactive algorithm to estimate a representative value for the sky background on CCD images. The method we have devised uses the mode as a robust e…
NGC 3628: Ejection Activity Associated with Quasars
H. Arp, E. M. Burbidge, Y. Chu +3
NGC3628 is a well-studied starburst/low level AGN galaxy in the Leo Triplet noted for its extensive outgassed plumes of neutral hydrogen. QSOs are shown to be concentrated around N…
Star clusterings in the Carina complex: UBVRI photometry of NGC 3324 and Loden 165
G. Carraro, F. Patat, H. Baumgardt
We report on UBVRI photometry of two fields in the region of the young open cluster NGC 3324. One of our fields covers the core region, while the oth…