A5001873975- Astronomy and Astrophysical Research
- Astrophysics and Cosmic Phenomena
- Astronomical Observations and Instrumentation
- Dark Matter and Cosmic Phenomena
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Radio Astronomy Observations and Technology
- Solar and Space Plasma Dynamics
- Remote Sensing in Agriculture
- Galaxies: Formation, Evolution, Phenomena
- Adaptive optics and wavefront sensing
Instituto de Ciencias Astronómicas, de la Tierra y del Espacio
2024
Consejo Nacional de Investigaciones Científicas y Técnicas
2018-2024
Instituto de Astronomía Teórica y Experimental
2018-2019
Context. The ESO public survey VISTA Variables in the Vía Láctea (VVV) surveyed inner Galactic bulge and adjacent southern disk from 2009–2015. Upon its conclusion, complementary VVV extended (VVVX) has expanded both temporal as well spatial coverage of original area, widening it 562 to 1700 sq. deg., providing additional epochs JHK s filters 2016–2023. Aims. With completion VVVX observations during first semester 2023, we present here observing strategy, a description data quality access,...
The ESO public survey VISTA Variables in the V\'ia L\'actea (VVV) surveyed inner Galactic bulge and adjacent southern disk from $2009-2015$. Upon its conclusion, complementary VVV eXtended (VVVX) has expanded both temporal as well spatial coverage of original area, widening it $562$ to $1700$ sq. deg., providing additional epochs $JHK_{\rm s}$ filters $2016-2023$. With completion VVVX observations during first semester 2023, we present here observing strategy, a description data quality...
ABSTRACT There is a lack of blazar detections in the galactic plane area, even most recent catalogues, mainly due to incompleteness resulting from interstellar dust and stellar contamination our Galaxy. The VISTA Variables Vía Láctea survey (VVV) aims map variable sources towards near-infrared (IR). are three catalogued one candidate blazars VVV which also detected by Fermi-LAT gamma-ray band Wide-field Infrared Survey Explorer (WISE) at mid-IR wavelengths. We study physical properties these...
We identified Active Galactic Nuclei (AGN) candidates as counterparts to unidentified gamma-ray sources (UGS) from the Fermi-LAT Fourth Source Catalogue at lower latitudes. Our methodology is based on use of near- and mid-infrared photometric data VISTA Variables in V\'ia L\'actea (VVV) Wide-field Infrared Survey Explorer (WISE) surveys. The AGN associated with UGS occupy very different regions stars extragalactic colour space defined by VVV WISE infrared colours. found 27 near-infrared...
ABSTRACT We identified Active Galactic Nuclei (AGN) candidates as counterparts to unidentified gamma-ray sources (UGS) from the Fermi-LAT Fourth Source Catalogue at lower latitudes. Our methodology is based on use of near- and mid-infrared photometric data VISTA Variables in Vía Láctea (VVV) Wide-field Infrared Survey Explorer (WISE) surveys. The AGN associated with UGS occupy very different regions stars extragalactic colour space defined by VVV WISE infrared colours. found 27 near-infrared...
The main goal of this study was to determine the effects on equivalent widths (EWs) some spectral lines produced in quasars by presence surrounding galaxies. To carry out, a sample 4663 (QSOs) redshift range 0.20 0.40 from Sloan Digital Sky Survey--Data Release 7 analyzed. Three QSO sub-samples were defined, taking into account projected separations and radial velocity differences with neighboring In way, we utilized two QSOs strong weak galaxy interactions, smaller than 70 kpc, between 140...