A5101500774- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Spectroscopy and Laser Applications
- Astrophysics and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Astrophysical Phenomena and Observations
- Astronomical Observations and Instrumentation
- Gamma-ray bursts and supernovae
- Scientific Research and Discoveries
- Astro and Planetary Science
- Scientific Measurement and Uncertainty Evaluation
- Superconducting and THz Device Technology
- Impact of Light on Environment and Health
- Plant biochemistry and biosynthesis
- Particle Detector Development and Performance
- Phytochemicals and Antioxidant Activities
- Plant Pathogens and Fungal Diseases
- Pulsars and Gravitational Waves Research
- Particle Accelerators and Free-Electron Lasers
- Plant-Microbe Interactions and Immunity
- Essential Oils and Antimicrobial Activity
- Molecular Spectroscopy and Structure
- Fecal contamination and water quality
Instituto Politécnico Nacional
2016-2024
University of Zulia
2024
Autonomous University of Tamaulipas
2022
Atacama Large Millimeter Submillimeter Array
2010-2021
Centro de Ingeniería Genética y Biotecnología
2021
Instituto de Astrofísica de Andalucía
1997-2016
European Southern Observatory
2015
Instituto de Radioastronomía Milimétrica
2006-2012
Lourdes University
2007
Consejo Superior de Investigaciones Científicas
2003-2005
We present Atacama Large Millimeter/submillimeter Array (ALMA) observations from the 2014 Long Baseline Campaign in dust continuum and spectral line emission HL Tau region. The images at wavelengths of 2.9, 1.3, 0.87 mm have unprecedented angular resolutions 0 075 (10 AU) to 025 (3.5 AU), revealing an astonishing level detail circumstellar disk surrounding young solar analog Tau, with a pattern bright dark rings observed all wavelengths. By fitting ellipses most distinct rings, we measure...
A major goal of the Atacama Large Millimeter/submillimeter Array (ALMA) is to make accurate images with resolutions tens milliarcseconds, which at submillimeter (submm) wavelengths requires baselines up ~15 km. To develop and test this capability, a Long Baseline Campaign (LBC) was carried out from September late November 2014, culminating in end-to-end observations, calibrations, imaging selected Science Verification (SV) targets. This paper presents an overview campaign its main results,...
We present initial results of very high resolution Atacama Large Millimeter/submillimeter Array (ALMA) observations the z = 3.042 gravitationally lensed submillimeter galaxy HATLAS J090311.6+003906 (SDP.81). These were carried out using a extended configuration as part Science Verification for 2014 ALMA Long Baseline Campaign, with baselines up to ∼15 km. continuum imaging at 151, 236, and 290 GHz unprecedented angular resolutions fine 23 mas, corresponding an unmagnified spatial scale ∼180...
We present CO(1–0) and CO(2–1) maps of the starburst/Seyfert 1 galaxy NGC 2782 obtained with IRAM interferometer, at 2115 0706 resolution respectively. The CO emission is aligned along stellar nuclear bar radius ~1 kpc, configured in an elongated structure two spiral arms high pitch angle ~90°. At extremity bar, changes direction to trace more extended features a lower angle. These are beginning straight dust lanes, which parallel oval distortion, reminiscent primary almost perpendicular...
Aims: We characterize the molecular gas content using CO emission of a redshift-limited subsample isolated galaxies from AMIGA (Analysis interstellar Medium Isolated GAlaxies) project. Methods: present 12CO(1-0) data for 273 galaxies. constructed sample containing with 1500\kms
We present new stellar kinematical profiles of four galaxy hosts active galactic nuclei, using the 12CO bandhead around 2.3 μm with ISAAC/VLT spectrograph. find that nuclear bars or discs, embedded in large-scale primary bars, have all a decoupled kinematics, sense maximum rotational velocity occurs region. In three cases (NGC 1097, NGC 1808 and 5728), dispersion displays significant drop at nucleus, rarely observed phenomenon. also detect asymmetries ( mode) along bar major-axis 5728,...
The AMIGA project (Analysis of the Interstellar Medium Isolated Galaxies) is compiling a multiwavelength database isolated galaxies that includes optical (B and Hα), infrared (FIR NIR) radio (continuum plus HI CO lines) properties. It involves refinement pioneering Catalog Galaxies. This paper first in series begins with analysis global properties nearly redshift-complete CIG emphasis on Optical Luminosity Function (OLF) which we compare other recent estimates OLF for variety environments....
We investigate the process of galaxy formation as can be observed in only currently forming galaxies -the so-called Tidal Dwarf Galaxies, hereafter TDGs -through observations molecular gas detected via its CO (Carbon Monoxide) emission. These objects are formed material torn off outer parts a spiral disk due to tidal forces collision between two massive galaxies. Molecular is key element process, providing link cloud and bona fide galaxy. have 8 (two them already been published Braine et al....
We present new high-resolution observations of the nucleus counter-rotating LINER NGC 4826, made in –0 and –1 lines 12CO with IRAM Plateau de Bure mm-interferometer(PdBI).The CO maps, which achieve 0.8″(16 pc) resolution 2–1 line, fully resolve an inner molecular gas disk is truncated at outer radius 700 pc. The total mass () distributed a lopsided nuclear 40 pc radius, containing 15% mass, two one-arm spirals, develop different radii disk. distribution kinematics 1 kpc 4826 show prevalence...
Context.The AMIGA project aims to build a well defined and statistically significant reference sample of isolated galaxies in order estimate the environmental effects on formation evolution galaxies.
Powerful radio-AGN are hosted by massive elliptical galaxies which usually very poor in molecular gas. Nevertheless gas is needed the center to feed nuclear activity. We aim study properties (mass, kinematics, distribution, origin) such objects, and compare them with results of other known samples. have performed at IRAM-30m telescope a survey CO(1-0) CO(2-1) emission most powerful radio Local Universe, selected only on basis their continuum fluxes. The main result our low content compared...
Context. The construction of catalogues galaxies and the a posteriori study galaxy properties in relation to their environment have been hampered by scarce redshift information. new 3-dimensional (3D) surveys permit small, faint, physically bound satellites be distinguished from background-projected population, giving more comprehensive 3D picture surroundings.
We report CO detections in 17 out of 19 infrared ultraluminous QSO (IR QSO) hosts observed with the IRAM 30m telescope. The cold molecular gas reservoir these objects is a range 0.2--2.1$\times 10^{10}M_\odot$ (adopting CO-to-${\rm H_2}$ conversion factor $\alpha_{\rm CO}=0.8 M_\odot {\rm (K km s^{-1} pc^2)^{-1}}$). find that properties IR QSOs, such as mass, star formation efficiency ($L_{\rm FIR}/L^\prime_{\rm CO}$) and (1-0) line widths, are indistinguishable from those local galaxies...
Aims.We describe the mid- (MIR) and far- (FIR) infrared properties of a large (~1000) sample most isolated galaxies in local Universe. This is intended as "nurture-free" zero point against which more environmentally influenced samples can be compared.
We present a refinement of the optical morphologies for galaxies in Catalog Isolated Galaxies that forms basis AMIGA (Analysis interstellar Medium GAlaxies) project. Uniform reclassification using digitized POSS II data benefited from high resolution and dynamic range sky survey. Comparison with independent classifications made an SDSS overlap sample more than 200 confirms reliability early vs. late-type discrimination accuracy spiral subtypes within 1–2. CCD images taken at Observatorio de...
Context.Star formation depends strongly on both the local environment of galaxies and internal dynamics interstellar medium. To disentangle two effects, we obtained, in framework AMIGA project, Hα Gunn r photometric data for more than 200 spiral lying very low-density regions Universe.
We present high angular resolution radio snap-shot observations of seven nearby low-luminosity active galaxies (LLAGN) from the NUclei GAlaxies (NUGA) survey. The were conducted with MERLIN and EVN/VLBI at 18cm 6cm. At all observed resolutions frequencies, we find indications for extended emission in about ~40% sources, consistent decrease flux increasing resolution. components resemble jet a majority cases, optically thin synchrotron implied by their steep spectra. consider compact 6cm our...