The Rubin Observatory Legacy Survey of Space and Time (LSST) will observe 20,000 square degrees repeatedly throughout 10 years in 6 photometric bands (ugrizy), allowing us to study the variable universe with unprecedented detail, as well as obtaining an unprecedented combination of area and depth once all the observations are stacked. The survey will start …
Optimization of AGN photometric redshifts for LSST Read More »
The Rubin Observatory Legacy Survey of Space and Time (LSST) will observe 20,000 square degrees repeatedly throughout 10 years in 6 photometric bands (ugrizy), allowing us to study the variable universe with unprecedented detail, as well as obtaining an unprecedented combination of area and depth once all the observations are stacked. The survey will start …
Hot Dust Obscured Galaxies, or Hot DOGs, are some of the most luminous obscured quasars known in the Universe. Quasars and mergers, in general, are expected to play a major role in the evolution of massive galaxies. The idea is that mergers are able to drive gas down from the ISM into the central supermassive …
Hot Dust Obscured Galaxies represent a significant fraction of the most luminous heavily obscured quasars known in the Universe. A small subset of them, referred to as BHDs, show excess blue emission, thought to arise from scattered light from the highly obscured quasar. Detailed studies of three of these objects (Assef et al. 2016, 2020) …
Imaging Polarimetry of Blue Excess Hot Dust Obscured Galaxies Read More »
In this project, we focus on a sample of radio-loud quasars at z>3.5 with deep VLT/MUSE data. We study the properties of their circumgalactic medium and closest environments, by inspecting for the presence of Lyman Alpha Halos and close-by Lyman Alpha Emitters. We will compare such results with what is observed in quasars with no …
In this project, we compile a catalog of high-redshift (z>5.5) quasars candidates to be followed up by 4MOST as part of the Chilean survey “ChANGES” (Chilean AGN/Galaxy Extragalactic Survey). We use a selection based on available optical/NIR large-area sky surveys, and on a custom-made spectral energy distribution routine. Type of project: Research, actively recruiting new …
Selecting high-redshift quasars candidates for the 4MOST survey “ChANGES” Read More »
This project focuses on understanding several physical properties of powerful quasars showing strong radio emission (radio-loud) in the Epoch of Reionization (z~6). We are interested in studying their large-scale environments where these objects are found, predicted to be very rich. In order to do this, as a start, we will inspect the fields of three …
The Properties of high-redshift Radio-Loud Quasars in the Epoch of Reionization Read More »
Supernovae are among the most energetic explosions in the Universe, they are extremely important for studying high energy physics, stellar evolution and mass-loss processes, compact objects, cosmology, nucleosynthesis, and galaxy evolution. Optical transient surveys such as ZTF, ATLAS, ASAS-SN now find thousands of supernovae and other explosive transients per year, and these numbers will increase …
We are characterizing the massive and IR bright protoclusters discovered by the SPT SMG survey of the southern sky. We are studying the cold ISM through deep ALMA band-1 observations of CO(2-1) in the iconic SPT2349-56 protocluster at z=4.3, and the environment and CGM around three other protoclusters at z>4 through VLT/MUSE observations of the …
Characterization of IR bright protoclusters at z>4 Read More »
The ALMA CRISTAL large program (PI: R. Herrera-Camus; co-PIs: M. Aravena, J. González-López et al.) is designed to provide unique constraints on the morphologies, kinematics, existence of outflows, and ISM properties of galaxies at z=4-6. Our group is focused on the study of the interplay between the ISM and CGM of galaxies by characterizing the …