R. M. González Delgado
A5065395010- Astronomy and Astrophysical Research
- Galaxies: Formation, Evolution, Phenomena
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Astrophysics and Star Formation Studies
- Astronomical Observations and Instrumentation
- Astrophysical Phenomena and Observations
- Adaptive optics and wavefront sensing
- Astrophysics and Cosmic Phenomena
- Scientific Research and Discoveries
- Advanced Vision and Imaging
- Spectroscopy and Laser Applications
- Remote Sensing in Agriculture
- Radio Astronomy Observations and Technology
- CCD and CMOS Imaging Sensors
- Astro and Planetary Science
- Plant Water Relations and Carbon Dynamics
- Cosmology and Gravitation Theories
- Impact of Light on Environment and Health
- Calibration and Measurement Techniques
- Atmospheric Ozone and Climate
- Geophysics and Gravity Measurements
- Advanced Image Processing Techniques
- Photocathodes and Microchannel Plates
- Spectroscopy and Chemometric Analyses
Instituto de Astrofísica de Andalucía
2015-2024
University of Vienna
2024
Royal Observatory
2023
UK Astronomy Technology Centre
2023
Consejo Superior de Investigaciones Científicas
2001-2018
Unidades Centrales Científico-Técnicas
2010
Galaxies, Etoiles, Physique et Instrumentation
2008-2009
Université Paris Cité
2008
Délégation Paris 7
2008
Secretaría Nacional de Ciencia, Tecnología e Innovación
2008
Starburst99 is a comprehensive set of model predictions for spectrophotometric and related properties galaxies with active star formation. The models are an improved extended version the data previously published by Leitherer & Heckman. We have upgraded our code implementing latest stellar evolution Geneva group atmosphere grid compiled Lejeune et al. Several which were not included in previous publication shown here first time. presented homogeneous way five metallicities between Z = 0.040...
We present here the Calar Alto Legacy Integral Field Area (CALIFA) survey, which has been designed to provide a first step in this direction.We summarize survey goals and design, including sample selection observational strategy.We also showcase data taken during observing runs (June/July 2010) outline reduction pipeline, quality control schemes general characteristics of reduced data. This is obtaining spatially resolved spectroscopic information diameter selected $\sim600$ galaxies Local...
The use of integral field spectroscopy is since recently allowing to measure the emission line fluxes an increasingly large number star-forming galaxies, both locally and at high redshift. Many studies have used these derive gas-phase metallicity galaxies by applying so-called strong-line methods. However, indicators that datasets were empirically calibrated using few direct abundance data points (Te-based measurements). Furthermore, a precise determination prediction intervals commonly...
We present the largest and most homogeneous catalog of HII regions associations compiled so far. The comprises more than 7000 ionized regions, extracted from 306 galaxies observed by CALIFA survey. describe procedures used to detect, select, analyse spectroscopic properties these regions. In current study we focus on characterization radial gradient oxygen abundance in gas, based deprojected distribution found that all without clear evidence an interaction a common abundance, with...
We present the results on study of global and local M-Z relation based first data available from CALIFA survey (150 galaxies). This provides integral field spectroscopy complete optical extent each galaxy (up to 2-3 effective radii), with enough resolution separate individual HII regions and/or aggregations. Nearly $\sim$3000 have been detected. The spectra cover wavelength range between [OII]3727 [SII]6731, a sufficient signal-to-noise derive oxygen abundance star-formation rate associated...
This paper characterizes the radial structure of stellar population properties galaxies in nearby universe, based on 300 from CALIFA survey. The sample covers a wide range Hubble types, and galaxy mass. We apply spectral synthesis techniques to recover mass surface density, extinction, light mass-weighted ages, metallicity, for each spatial resolution element our target galaxies. To study mean trends with overall properties, individual profiles are stacked seven bins morphology. confirm that...
We present the first public data release of CALIFA survey. It consists science-grade optical datacubes for 100 eventually 600 nearby (0.005<z<0.03) galaxies, obtained with integral-field spectrograph PMAS/PPak mounted on 3.5m telescope at Calar Alto observatory. The galaxies in DR1 already cover a wide range properties color-magnitude space, morphological type, stellar mass, and gas ionization conditions. This offers potential to tackle variety open questions galaxy evolution using spatially...
The growth of galaxies is one the key problems in understanding structure and evolution universe its constituents. Galaxies can grow their stellar mass by accretion halo or intergalactic gas clouds, merging with smaller similar galaxies. available translates into a rate star formation, which controls generation metals universe. spatially resolved history assembly has not been obtained so far for any given galaxy beyond Local Group. Here we demonstrate how massive inside-out. We report...
This paper describes the third public data release (DR3) of Calar Alto Legacy Integral Field Area (CALIFA) survey. Science-grade quality for 667 galaxies are made public, including 200 second (DR2). Data were obtained with integral-field spectrograph PMAS/PPak mounted on 3.5 m telescope at Observatory. Three different spectral setups available: i) a low-resolution V500 setup covering wavelength range 3745–7500 Å (4240–7140 unvignetted) resolution 6.0 (FWHM) 646 galaxies, ii)...
This paper describes the Second Public Data Release (DR2) of Calar Alto Legacy Integral Field Area (CALIFA) survey. The data for 200 objects are made public, including 100 galaxies First (DR1). were obtained with integral-field spectrograph PMAS/PPak mounted on 3.5 m telescope at observatory. Two different spectral setups available each galaxy, (i) a low-resolution V500 setup covering wavelength range 3745-7500 \AA\ resolution 6.0 (FWHM), and (ii) medium-resolution V1200 3650-4840 2.3...
We present the single stellar population (SSP) synthesis Results of our new synthetic atmosphere models library with a spectral sampling 0.3 Å, covering wavelength range from 3000 to 7000 Å for wide metallicities (twice solar, half solar and 1/10 solar). The is composed 1650 spectra computed latest improvements in atmospheres. In particular, it incorporates non-local thermodynamic equilibrium (LTE) line-blanketed hot (Teff≥ 27 500 K), LTE (Phoenix) cool (3000 ≤Teff≤ 4500 K) stars. Because...
There have been many suggestions that starbursts may play an important role in Seyfert galaxies. Recent analyses of the UV, optical, and near-IR "featureless continuum" (FC) type 2 nuclei provided indirect evidence FC be produced by a compact starburst this provide power source for pronounced far-IR excess In present paper, we discuss Hubble Space Telescope (HST) images UV spectrum plus new ground-based near-UV through spectra Mrk 477 (=I Zw 92). This object is arguably most powerful nucleus...
We have studied the radial structure of stellar mass surface density (μ∗) and population age as a function total morphology for sample 107 galaxies from CALIFA survey. applied fossil record method based on spectral synthesis techniques to recover star formation history (SFH), resolved in space time, spheroidal disk dominated with masses 109 1012 M⊙. derived half-mass radius, we found that are average 15% more compact than light. The ratio radius half-light (HLR) shows dual dependence galaxy...
We describe and discuss the selection procedure statistical properties of galaxy sample used by Calar Alto Legacy Integral Field Area Survey (CALIFA), a public legacy survey 600 galaxies using integral field spectroscopy. The CALIFA "mother sample" was selected from Sloan Digital Sky (SDSS) DR7 photometric catalogue to include all with an r-band isophotal major axis between 45" 79.2" redshift 0.005 < z 0.03. mother contains 939 objects, which will be observed in course survey. targets for...
Fossil record methods based on spectral synthesis techniques have matured over the past decade, and their application to integrated galaxy spectra fostered substantial advances understanding of galaxies evolution. Yet, because lack spatial resolution, these studies are limited a global view, providing no information about internal physics galaxies. Motivated by CALIFA survey, which is gathering Integral Field Spectroscopy full optical extent 600 galaxies, we developed an end-to-end pipeline...
In this work we analyze the spectroscopic properties of a large number H ii regions, \sim2600, located in 38 galaxies. The sample galaxies has been assembled from face-on spirals PINGS survey and described M\'armol-Queralt\'o (2011, henceforth Paper I). All were observed using Integral Field Spectroscopy with similar setup, covering their optical extension up to \sim2.4 effective radii within wavelength range \sim3700 \sim6900{\AA}. We develop new automatic procedure detect based on contrast...
The spatially resolved stellar population content of today's galaxies holds important information for understanding the different processes that contribute to star formation and mass assembly histories galaxies. aim this paper is characterize radial structure rate (SFR) in nearby Universe as represented by a uniquely rich diverse data set drawn from CALIFA survey. sample under study contains 416 observed with integral field spectroscopy, covering wide range Hubble types masses ranging M⋆ ~...
Here we describe the first results of Advanced Large Homogeneous Area Medium-Band Redshift Astronomical (ALHAMBRA) survey, which provides cosmic tomography evolution contents universe over most history. Our novel approach employs 20 contiguous, equal-width, medium-band filters covering from 3500 Å to 9700 Å, plus standard JHKs near-infrared (NIR) bands, observe a total area 4 deg2 on sky. The optical photometric system has been designed maximize number objects with accurate classification by...
We present the stellar kinematic maps of a large sample galaxies from integral-field spectroscopic survey CALIFA. The comprises 300 displaying wide range morphologies across Hubble sequence, ellipticals to late-type spirals. This dataset allows us homogeneously extract kinematics up several effective radii. In this paper, we describe level completeness subset with respect full CALIFA sample, as well virtues and limitations extraction compared other well-known surveys. addition, provide...
We use spatially and temporally resolved maps of stellar population properties 300 galaxies from the CALIFA integral field survey to investigate how metallicity (Z⋆) relates total mass (M⋆) local surface density (μ⋆) in both spheroidal- disk-dominated galaxies. The are shown follow a clear mass–metallicity relation (MZR) over whole 109–1012 M☉ range. This is steeper than one derived nebular abundances, which similar flatter MZR when we consider only young stars. also find strong between...
While studies of gas-phase metallicity gradients in disc galaxies are common, very little has been done towards the acquisition stellar abundance same regions. We present here a comparative study and age distributions sample 62 nearly face-on, spiral with without bars, using data from CALIFA survey. measure slopes their relation other properties galaxies. find that mean shallow negative. Furthermore, when normalized to effective radius disc, slope population does not correlate mass or...