109 citations · 143 across the 6 of their papers we have counts for
6 papers
Testing connections between exo-atmospheres and their host stars. GEMINI-N/GMOS ground-based transmission spectrum of Qatar-1b
C. von Essen, S. Cellone, M. Mallonn +3
Till date, only a handful exo-atmospheres have been well characterized, mostly by means of the transit method. Data show exoplanet atmospheres to be diverse. However, this is based…
Discovery of a deep Seyfert-2 galaxy at z = 0.222 behind NGC 300
J. A. Combi, F. Garcia, M. J. Rodriguez +2
We report on the unveiling of the nature of the unidentified X-ray source 3XMM J005450.3-373849 as a Seyfert-2 galaxy located behind the spiral galaxy NGC 300 using Hubble Space Te…
Dwarf galaxies in the Antlia Cluster: First results
A. V. Smith Castelli, L. P. Bassino, S. A. Cellone +5
We present the first results of a project aimed to study the galaxy population of the Antlia cluster, the third nearest galaxy cluster after Virgo and Fornax. The observations for…
Optical microvariability of EGRET blazars
G. E. Romero, S. A. Cellone, J. A. Combi +1
We present results of a photometric CCD study of the incidence of microvariability in the optical emission of a sample of 20 blazars detected at gamma-ray energies by the EGRET ins…
Cometary activity in 2060 Chiron at minimum brightness
Adrian M. Silva, Sergio A. Cellone
We present two-colour CCD imaging of 2060 Chiron obtained between 1996 and 1998 with the 2.15 m telescope at CASLEO (San Juan, Argentina). These post-perihelion observations show t…
Extreme intranight variability in the BL Lacertae object AO 0235+164
G. E. Romero, S. A. Cellone, J. A. Combi
We present results of two-colour photometry with high time resolution of the violently variable BL Lac object AO 0235+164. We have found extreme intranight variability with amplitu…