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11 papers
De mora luminis: Roemer's discovery 350 years later
Fabio Falchi, Riccardo Furgoni, Paolo Gattillo +1
350 years from the 1676 announcement of the Roemer's discovery that light propagates with finite speed, we present our observations using eyes with telescopes having similar resolu…
Light pollution in USA and Europe: The good, the bad and the ugly
Fabio Falchi, Riccardo Furgoni, Terrel A. Gallaway +5
Light pollution is a worldwide problem that has a range of adverse effects on human health and natural ecosystems. Using data from the New World Atlas of Artificial Night Sky Brigh…
Fast Fourier-transform calculation of artificial night sky brightness maps
Salvador Bará, Fabio Falchi, Riccardo Furgoni +1
Light pollution poses a growing threat to optical astronomy, in addition to its detrimental impacts on the natural environment, the intangible heritage of humankind related to the…
Evidence for High Eccentricity and Apsidal Motion in the Detached Eclipsing Binary GSC 04052-01378
Riccardo Furgoni, Gary Billings
We observed the recently discovered eccentric eclipsing binary GSC 04052-01378 in order to improve the light curve parameters and to find further evidence of its probable high ecce…
The new world atlas of artificial night sky brightness
Fabio Falchi, Pierantonio Cinzano, Dan Duriscoe +6
Artificial lights raise night sky luminance, creating the most visible effect of light pollution-artificial skyglow. Despite the increasing interest among scientists in fields such…
Analysis of the Petersen Diagram of Double-Mode High-Amplitude δ Scuti Stars
Riccardo Furgoni
I created the Petersen diagram relative to all the Double Mode High Amplitude δ Scuti stars listed in the AAVSO's International Variable Star Index up to date December 29, 2015. Fo…
Seventeen New Variable Stars Detected in Vulpecula and Perseus
Riccardo Furgoni
I report the discovery of seventeen new variable stars in the Northern Sky: three eclipsing (GSC 02129-00759; GSC 02129-00947; GSC 02869-02559), one eruptive (GSC 02856-02521), ten…
Twenty-Two New Variable Stars in the Northern Sky and Light Elements Improvement for PT Lyr, [WM2007] 1157, and [WM2007] 1160
Riccardo Furgoni
I report the discovery of twenty-two new variable stars in the Northern Sky: eleven eclipsing, seven pulsating (one of which is suspected), three rotating, and one of unspecified t…
Variability Type Determination and High Precision Ephemeris for NSVS 7606408
Riccardo Furgoni
A photometric campaign analysis of the star NSVS 7606408 has been conducted in order to determine the type of variability and high accuracy ephemeris. By combining the obtained dat…
Nine New Variable Stars in Cygnus and Variability Type Determination of [Wm2007] 1176
Riccardo Furgoni
I report the discovery of nine new variable stars in Cygnus: five pulsating (VSX J192319.8+280832, VSX J192405.8+280352, VSX J192220.7+275518, VSX J192304.4+280231, VSX J192255.1+2…
Eighteen New Variable Stars in Cassiopeia and Variability Checking for NSV 364
Riccardo Furgoni
I report the discovery of eighteen new variable stars in Cassiopeia: eight pulsating (2MASS J00584964+5909260; GSC 03680-00667; GSC 03680-01320; GSC 03680-01488; 2MASS J02472793+61…