1k citations · 2.6k across the 37 of their papers we have counts for
37 papers
The elusive chase for the first RR Lyr star in a binary system: the case of KIC 2831097
Ennio Poretti, Jean-Francois Le Borgne, Mercedes Correa +9
The lack of RR Lyr stars in binary systems is an atypical fact when we compared it to other classes of variables. Therefore, it has become a challenge for observers to detect an RR…
Observations of the suspected RR Lyr stars NSV 14172 and NSV 14264
Jean-François Le Borgne
NSV 14264 and NSV 14172 are suspected to be variable stars of RR Lyr type (Brun, 1964). They were observed during three nights in October 2018 with a 25cm diameter telescope. These…
CCD and DSLR maxima of RR Lyrae stars in 2016 and 2017
K. Hirosawa, J. F. Le Borgne
We present here maximum timings of RR Lyrae stars observed in 2016 and 2017 by VSOLJ member Kenji Hirosawa. The calculation of the time of maximum from the measurements provided by…
The WIRCam Ultra Deep Survey (WUDS) I. Survey overview and UV luminosity functions at z~5 and z~6
R. Pello, P. Hudelot, N. Laporte +17
The aim of this paper is to introduce the WIRCam Ultra Deep Survey (WUDS), a near-IR photometric public survey carried out at the CFH Telescope in the field of the CFHTLS-D3 field…
Cyclic variations in the periods of RR Lyr stars
Ennio Poretti, Jean-Francois Le Borgne, Alain Klotz +2
We report here on two types of cyclic variations that can be observed in the periods of RR Lyr stars, i.e., the Blazhko and the light-time effects. The former has been investigated…
zCOSMOS 20k: Satellite galaxies are the main drivers of environmental effects in the galaxy population at least to z~0.7
K. Kovac, S. J. Lilly, C. Knobel +41
We explore the role of environment in the evolution of galaxies over 0.1<z<0.7 using the final zCOSMOS-bright data set. Using the red fraction of galaxies as a proxy for the quench…