Daniela Galdeano
A5079211750- Astronomy and Astrophysical Research
- Galaxies: Formation, Evolution, Phenomena
- Astronomical Observations and Instrumentation
- Astrophysical Phenomena and Observations
- Stellar, planetary, and galactic studies
- Remote Sensing in Agriculture
- Adaptive optics and wavefront sensing
- Dark Matter and Cosmic Phenomena
- Impact of Light on Environment and Health
- CCD and CMOS Imaging Sensors
- Gamma-ray bursts and supernovae
- Cosmology and Gravitation Theories
- History and Developments in Astronomy
- Plant Water Relations and Carbon Dynamics
- Diet, Metabolism, and Disease
National University of San Juan
2020-2022
Consejo Nacional de Investigaciones Científicas y Técnicas
2020-2022
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 main goal of this work is to investigate the influence environment at different scales on properties galaxies in systems with a low number members. To end we used catalogue small galaxy comprising compact and locally isolated pairs, triplets groups four up six galaxies. We consider fixed aperture estimators found that lower than 5 Mpc pairs are associated density environments groups. Moreover nearest neighbour approach highlights prefer denser slightly less dense When considering...
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...
We studied a region of 1.636 square degrees corresponding to the VVV tile $b204$. Using SExtractor, we analysed photometric data generating catalogue extended sources in this area. In order confirm these as galaxy candidates visually inspected RGB images looking for typical features. 2MASX and GCMW catalogued tested completeness contamination our define suitable colour cuts select galaxies. also compared observational results with those obtained from two semi-analytical models on Dark Matter...
Context. The Ophiuchus cluster of galaxies, located at low latitudes in the direction Galactic bulge, has been relatively poorly studied comparison with other rich galaxy clusters, such as Coma, Virgo, and Fornax, despite being second brightest X-ray sky. Aims. Our aim is perform a study hidden population massive Zone Avoidance. Methods. Deep near-infrared images photometry from VISTA Variables Vía Láctea eXtended (VVVX) survey were used to detect member candidates up 2 Mpc cD 2MASX...
Context. The ZOA does not allow clear optical observations of extragalactic sources behind the Milky Way due to meaningful extinction emission these objects. in NIR wavelengths represent a potential source astronomical discoveries supporting detection new galaxies, completing picture large scale structure this still little explored area sky. Aims. Our aim is decipher nature overdensity located Way, tile b204 VVV survey. Methods. We studied an six arcmin around galaxy concentration at l =...
Context . The location of the Solar System complicates detection extragalactic sources beyond Milky Way plane. optical observations are hampered in so-called zone avoidance (ZOA), where stellar crowding and Galactic absorption severe. Observations at longer wavelengths needed order to discover new background galaxies complete census ZOA. Aims goal this work is identify behind bulge using near-infrared (NIR) data from VISTA Variables Vía Láctea (VVV) survey. Methods To end, we made use...
Context. The location of the Solar System constrains detection extragalactic sources beyond Milky Way(MW) plane. optical observations are hampered in so--called Zone Avoidance (ZOA) where stellar crowding and Galactic absorption severe. Observations at longer wavelengths needed to discover new background galaxies complete census ZOA. Aims. goal this work is identify behind MW Bulge using near-infrared (NIR) data from VISTA Variables V\'ia L\'actea (VVV) survey. Methods. To end we made use...
Context. The ZOA does not allow clear optical observations of extragalactic sources behind the Milky Way due to meaningful extinction emission these objects. in NIR wavelengths represent a potential source astronomical discoveries supporting detection new galaxies, completing picture large scale structure this still little explored area sky. Aims. Our aim is decipher nature overdensity located Way, tile b204 VVV survey. Methods. We studied an six arcmin around galaxy concentration at l =...