J. Masegosa
A5048608289- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Astronomical Observations and Instrumentation
- Gamma-ray bursts and supernovae
- Astrophysical Phenomena and Observations
- Astrophysics and Star Formation Studies
- Astrophysics and Cosmic Phenomena
- Adaptive optics and wavefront sensing
- History and Developments in Astronomy
- Calibration and Measurement Techniques
- CCD and CMOS Imaging Sensors
- Remote Sensing in Agriculture
- Archaeological and Historical Studies
- Spectroscopy and Laser Applications
- Solar and Space Plasma Dynamics
- Advanced Vision and Imaging
- Plant Water Relations and Carbon Dynamics
- Scientific Research and Discoveries
- Cultural and Mythological Studies
- Astro and Planetary Science
- Scientific Measurement and Uncertainty Evaluation
- Geophysics and Gravity Measurements
- Advanced Measurement and Metrology Techniques
- Impact of Light on Environment and Health
Instituto de Astrofísica de Andalucía
2014-2023
Consejo Superior de Investigaciones Científicas
1987-2013
Organismo Autónomo Parques Nacionales
2013
Unidades Centrales Científico-Técnicas
2010
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...
Galaxies, which often contain ionised gas, sometimes also exhibit a so-called low-ionisation nuclear emission line region (LINER). For 30 years this was attributed to central mass-accreting supermassive black hole (AGN) of low luminosity, making LINER galaxies the largest AGN-sub-population, dominating in numbers over higher luminosity Seyfert and quasars. This, however, poses serious problem. While inferred energy balance is plausible, many LINERs clearly do not any other independent...
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...
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 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...
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...
The morphological, spectroscopic and kinematical properties of the warm interstellar medium (wim) in early-type galaxies (ETGs) hold key observational constraints to nuclear activity buildup history these massive, quiescent systems. High-quality integral field spectroscopy (IFS) data with a wide spectral spatial coverage, such as those from CALIFA survey, offer an unprecedented opportunity for advancing our understanding wim ETGs. This article centers on 2D investigation component 32 nearby...
We present spatially resolved stellar and/or ionized gas kinematic properties for a sample of 103 interacting galaxies, tracing all merger stages: close companions, pairs with morphological signatures interaction, and coalesced remnants. compare our 80 non-interacting galaxies. measure the components major (projected) position angles (PA$_{\mathrm{kin}}$, approaching receding) directly from velocity fields no assumptions on internal motions. This method allow us to derive deviations PAs...
We measured the gas abundance profiles in a sample of 122 face-on spiral galaxies observed by CALIFA survey and included all spaxels whose line emission was consistent with star formation. This type analysis allowed us to improve statistics respect previous studies, properly estimate oxygen distribution across entire disc distance up 3-4 effective radii (r$_e$). confirm results obtained from classical HII region analysis. In addition general negative gradient, an outer flattening can be...
The Advance Large Homogeneous Area Medium-Band Redshift Astronomical (ALHAMBRA) survey has observed eight different regions of the sky, including sections Cosmic Evolution Survey (COSMOS), DEEP2, European Large-Area Infrared Space Observatory (ELAIS), Great Observatories Origins Deep North (GOODS-N), Sloan Digital Sky (SDSS) and Groth fields using a new photometric system with 20 optical, contiguous ∼300-Å filters plus JHKs bands. filter is designed to optimize effective redshift depth...
We describe the European Large Area ISO Survey (ELAIS). ELAIS was largest single Open Time project conducted by ISO, mapping an area of 12 deg2 at 15 μm with ISOCAM and 90 ISOPHOT. Secondary surveys in other bands were undertaken team within fields primary survey, 6 being covered 6.7 1 175 μm. This paper discusses goals techniques employed its construction, as well presenting details observations carried out, data from which are now public domain. outline 'preliminary analysis' led to...
Context.The dominating reionization source in the young universe has not yet been identified. Possible candidates include metal poor dwarf galaxies with starburst properties.Aims.We selected an extreme dwarf, Blue Compact Galaxy Haro 11, aim of determining Lyman continuum escape fraction from UV spectroscopy.Methods.Spectra 11 were obtained Far Ultraviolet Spectroscopic Explorer (FUSE). A weak signal shortwards break is identified as (LyC) emission escaping ongoing starburst. From profile...
We present the final band-merged European Large-Area ISO Survey (ELAIS) Catalogue at 6.7, 15, 90 and 175 μm, associated data U, g′, r′, i′, Z, J, H, K 20 cm. The origin of survey, infrared radio observations, data-reduction optical identifications are briefly reviewed, a summary area covered completeness limit for each band is given. A detailed discussion band-merging association strategy total consists 3762 sources. 23 per cent 15-μm sources 75 6.7-μm stars. For extragalactic observed in...
The optical afterglow spectrum of GRB050401 (at z=2.8992+/-0.0004) shows the presence a DLA, with log(nHI)=22.6+/-0.3. This is highest column density ever observed in and about five times larger than strongest DLA detected so far any QSO spectrum. From spectrum, we also find very large Zn density, allowing us to infer an abundance [Zn/H]=-1.0+/-0.4. These columns are supported by X-ray from Swift-XRT which (in excess Galactic) log(nH)=22.21^{+0.06}_{-0.08} assuming solar abundances z=2.9)....
We present the results of an homogeneous X-ray analysis for 82 nearby LINERs selected from catalogue Carrillo et al. (1999). All sources have available Chandra (68 sources) and/or XMM-Newton (55 observations. This is largest sample with spectral data (60 out objects) and significantly improves our previous based on 51 (Gonzalez-Martin 2006). It increases both size adds data. New models permit inclusion double absorbers in fits. Nuclear morphology inferred compactness detected nuclear hard...
We report the results from a homogeneous analysis of X-ray (Chandra ACIS) data available for sample 51 LINER galaxies selected catalogue by Carrillo et al. (1999, Rev. Mex. Astron. Astrofis., 35, 187) and representative population bright sources. The nuclear morphology has been classified their compactness in hard band (4.5–8.0 keV) into 2 categories: active galactic nuclei (AGN) candidates (with clearly identified unresolved source) starburst (SB) (without clear source). Sixty percent total...
As part of the CALIFA survey, we conducted a thorough 2D analysis ionized gas in two E/S0 galaxies, NGC6762 and NGC5966, aiming to shed light on nature their warm ISM. We present optical IFS obtained with PMAS/PPAK spectrophotometer. To recover nebular lines, subtracted underlying stellar continuum from observed spectra using STARLIGHT code. In NGC6762, emission display similar morphologies, while line morphology is elongated spanning ~6 kpc, oriented roughly orthogonal major axis ellipsoid....