Loreto Barcos-Muñoz
A5112531119- Galaxies: Formation, Evolution, Phenomena
- Astrophysics and Star Formation Studies
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Astrophysical Phenomena and Observations
- Gamma-ray bursts and supernovae
- Radio Astronomy Observations and Technology
- Astrophysics and Cosmic Phenomena
- Astronomical Observations and Instrumentation
- Spectroscopy and Laser Applications
- Scientific Research and Discoveries
- Atmospheric Ozone and Climate
- Superconducting and THz Device Technology
- Adaptive optics and wavefront sensing
- Scientific Measurement and Uncertainty Evaluation
- Calibration and Measurement Techniques
- GNSS positioning and interference
- Planetary Science and Exploration
- Geological Modeling and Analysis
- Gait Recognition and Analysis
- Laser Design and Applications
- Speech and Audio Processing
- Atmospheric and Environmental Gas Dynamics
- Radiation Dose and Imaging
- Pulsars and Gravitational Waves Research
University of Virginia
2015-2024
National Radio Astronomy Observatory
2017-2024
McCormick (United States)
2015-2024
Atacama Large Millimeter Submillimeter Array
2017-2020
Max Planck Institute for Astronomy
2019
Max Planck Society
2019
Abstract We present an analysis of <?CDATA ${[{\rm{O}}{\rm{I}}]}_{63}$?> , [O iii ] 88 [N ii 122 and ${[{\rm{C}}{\rm{II}}]}_{158}$?> far-infrared (FIR) fine-structure line observations obtained with Herschel /PACS, for ∼240 local luminous infrared galaxies (LIRGs) in the Great Observatories All-sky LIRG Survey. find pronounced declines (“deficits”) line-to-FIR continuum emission as a function FIR color luminosity surface density, ${{\rm{\Sigma }}}_{\mathrm{IR}}$?> . The median electron...
Abstract We present James Webb Space Telescope (JWST) Mid-Infrared Instrument (MIRI) integral-field spectroscopy of the nearby merging, luminous infrared galaxy, NGC 7469. This galaxy hosts a Seyfert type-1.5 nucleus, highly ionized outflow, and bright, circumnuclear star-forming ring, making it an ideal target to study active galactic nucleus (AGN) feedback in local universe. take advantage high spatial/spectral resolution JWST/MIRI isolate regions surrounding central properties dust warm...
Abstract We present mid-infrared spectroscopic observations of the nucleus nearby Seyfert galaxy NGC 7469 taken with MIRI instrument on James Webb Space Telescope (JWST) as part Directors Discretionary Time Early Release Science program 1328. The high-resolution nuclear spectrum contains 19 emission lines covering a wide range ionization. high-ionization show broad, blueshifted reaching velocities up to 1700 km s −1 and FWHM ranging from ∼500 1100 . width broad broad-to-narrow line flux...
Abstract We present James Webb Space Telescope (JWST) Near Infrared Spectrograph (NIRSpec) integral field spectroscopy of the nearby luminous infrared galaxy NGC 7469. take advantage high spatial/spectral resolution and wavelength coverage JWST/NIRSpec to study 3.3 μ m neutral polycyclic aromatic hydrocarbon (PAH) grain emission on ∼200 pc scales. A clear change in average properties between star-forming ring central AGN is found. Regions vicinity AGN, with [Ne iii ]/[Ne ii ] > 0.25, tend...
Abstract We present new JWST NIRSpec integral field spectroscopy (IFS) data for the luminous infrared galaxy NGC 7469, a nearby (70.6 Mpc) active with Seyfert 1.5 nucleus that drives highly ionized gas outflow and prominent nuclear star-forming ring. Using superb sensitivity high spatial resolution of instrument IFS, we investigate role in excitation dynamics circumnuclear gas. Our analysis focuses on [Fe ii ], H 2 , hydrogen recombination lines trace radiation/shocked-excited molecular...
The merger of two or more galaxies can enhance the inflow material from galactic scales into close environments Active Galactic Nuclei (AGN), obscuring and feeding supermassive black hole (SMBH). Both recent simulations observations AGN in mergers have confirmed that are related to strong nuclear obscuration. However, it is still unclear how obscuration evolves last phases process. We study a sample 60 Luminous Ultra-luminous IR (U/LIRGs) GOALS observed by NuSTAR. find fraction Compton-thick...
Abstract We present multiwavelength high-spatial resolution (∼0.″1, 70 pc) observations of UGC 4211 at z = 0.03474, a late-stage major galaxy merger the closest nuclear separation yet found in near-IR imaging (0.″32, ∼230 pc projected separation). Using Hubble Space Telescope/Space Telescope Imaging Spectrograph, Very Large Telescope/MUSE+AO, Keck/OSIRIS+AO spectroscopy, and Atacama Millimeter/submillimeter Array (ALMA) observations, we show that spatial distribution, optical near-infrared...
We present results from the James Webb Space Telescope (JWST) Director's Discretionary Time Early Release Science (ERS) program 1328 targeting nearby, Luminous Infrared Galaxy (LIRG), VV 114. use MIRI and NIRSpec instruments to obtain integral-field spectroscopy of heavily obscured Eastern nucleus (V114E) surrounding regions. The spatially resolved, high-resolution, spectra reveal physical conditions in gas dust over a projected area 2-3 kpc that includes two brightest IR sources, NE SW...
Abstract The enormous increase in mid-IR sensitivity and spatial spectral resolution provided by the JWST spectrographs enables, for first time, detailed extragalactic studies of molecular vibrational bands. This opens an entirely new window study interstellar medium luminous infrared galaxies (LIRGs). We present a analysis rovibrational bands gas-phase CO, H 2 O, C , HCN toward heavily obscured eastern nucleus LIRG VV 114, as observed NIRSpec spectrograph on Mid-InfraRed Instrument (MIRI...
Massive star-forming galaxies in the high-redshift universe host large reservoirs of cold gas their circumgalactic medium (CGM). Traditionally, these have been linked to diffuse H I Lyman- α (Ly ) emission extending beyond ≈10 kpc scales. In recent years, millimeter and submillimeter observations started identify even colder CGM through molecular and/or atomic tracers such as [C II ] 158 μm transition. this context, we studied well-known J1000+0234 system at z = 4.54 that hosts a massive...
We present new Karl G. Jansky Very Large Array radio continuum images of the nuclei Arp 220, nearest ultra-luminous infrared galaxy. These have both angular resolution to study detailed morphologies two that power system and sensitivity a wide range spatial scales. At 33 GHz, with 0".081 x 0".063 (29.9 23.3 pc), we resolve emission surrounding conclude is mostly synchrotron in nature. The distributions are well described by exponential profiles. deconvolved half-light radii 51 35 pc for...
We analyse new observations with the International Low Frequency Array (LOFAR) telescope, and archival data from Multi-Element Radio Linked Interferometer Network (MERLIN) Karl G. Jansky Very Large (VLA). model spatially resolved radio spectrum of Arp 220 150 MHz to 33 GHz. present an image at resolution $0.65''\times0.35''$, sensitivity 0.15 mJy beam$^{-1}$, integrated flux density $394\pm59$ mJy. More than 80% detected comes extended ($6''\approx$2.2 kpc) steep ($\alpha=-0.7$) emission,...
Abstract The nearby, luminous infrared galaxy NGC 7469 hosts a Seyfert nucleus with circumnuclear star-forming ring and is thus the ideal local laboratory for investigating starburst–AGN (active galactic nucleus) connection in detail. We present integral-field observations of central 1.3 kpc region obtained JWST Mid-InfraRed Instrument. Molecular ionized gas distributions kinematics at resolution ∼100 pc over 4.9–7.6 μ m are examined to study dynamics influenced by AGN. low-ionization [Fe ii...
James Webb Space Telescope (JWST) Mid-InfraRed Instrument (MIRI) images of the luminous infrared (IR) galaxy VV 114 are presented. This redshift ~ 0.020 merger has a western component (VV 114W) rich in optical star clusters and an eastern 114E) hosting mid-IR nucleus hidden at UV wavelengths by dust lanes. With MIRI, 114E resolves primarily into bright NE SW cores separated 630 pc. comprises 45% 15um light 114, with having IR luminosities, L_ (8-1000um) 8+/-0.8x10^10 L_sun 5+/-0.5x10^10...
Abstract We present the results of a James Webb Space Telescope NIRCam investigation into young massive star cluster (YMC) population in luminous infrared galaxy VV 114. identify 374 compact YMC candidates with signal-to-noise ratios ≥ 3, 5, and 5 at F150W, F200W, F356W, respectively. A direct comparison our HST catalog reveals that ∼20% these sources are undetected optical wavelengths. Based on yggdrasil stellar models, we 17 JWST imaging alone F150W – F200W F356W colors suggesting they all...
ABSTRACT We present new Institut de Radioastronomie Millimétrique (IRAM) 30 m spectroscopic observations of the ∼88 GHz band, including emission from <?CDATA $\mathrm{CCH}(N=1\to 0)$?> <?MML <mml:math> <mml:mi>CCH</mml:mi> <mml:mspace width="0.50em"/> <mml:mo stretchy="true">(</mml:mo> <mml:mi>N</mml:mi> <mml:mo>=</mml:mo> <mml:mn>1</mml:mn> <mml:mo>→</mml:mo> <mml:mn>0</mml:mn> stretchy="true">)</mml:mo> </mml:math>?> multiplet, HCN ( $J=1\to <mml:mi>J</mml:mi> ,...
We present IRAM-30m Telescope $^{12}$CO and $^{13}$CO observations of a sample 55 luminous ultraluminous infrared galaxies (LIRGs ULIRGs) in the local universe. This is subset Great Observatory All-Sky LIRG Survey (GOALS), for which we use ancillary multi-wavelength data to better understand their interstellar medium star formation properties. Fifty-three (96%) are detected $^{12}$CO, 29 (52%) also above 3$\sigma$ level. The median full width at zero intensity (FWZI) velocity CO line...
Using ALMA, we report high angular-resolution observations of the redshift z=3.63 galaxy, G09v1.97, one most luminous strongly lensed galaxies discovered by H-ATLAS survey. We present 0"2-0"4 resolution images rest-frame 188 and 419$\mu$m dust continuum CO(6-5), H2O(211-202) J=2 H2O+ line emission. also detection H$_2^{18}$O in this source. The molecular gas emission are resolved into a nearly complete ~1"5 diameter Einstein ring plus weaker image center, which is caused special dual...
Abstract We present HST narrowband near-infrared imaging of Pa α and β emission 48 local luminous infrared galaxies (LIRGs) from the Great Observatories All-Sky LIRG Survey. These data allow us to measure properties 810 spatially resolved star-forming regions (59 nuclei 751 extranuclear clumps) directly compare their those found in both high-redshift galaxies. find that LIRGs clumps have radii ranging ∼90 900 pc star formation rates (SFRs) ∼1 × 10 −3 M ⊙ yr −1 , with median values for 170...
We present the morphological parameters and global properties of dust-obscured star formation in typical star-forming galaxies at z = 4–6. Among 26 composed 20 observed by Cycle-8 ALMA Large Program, CRISTAL, 6 from archival data, we individually detect rest-frame 158 μm dust continuum emission 19 galaxies, 9 which are reported for first time. The derived far-infrared luminosities range log 10 L IR [ ⊙ ] 10.9 − 12.4, an order magnitude lower than previously detected massive dusty (DSFGs)....
We present the first spatially and spectrally resolved image of molecular outflow in western nucleus Arp\,220. The outflow, seen HCN~(1--0) by ALMA, is compact collimated, with extension $\lesssim$ 120\,pc. Bipolar morphology emerges along minor axis disk, redshifted blueshifted components reaching maximum inclination-corrected velocity $\sim\,\pm$\,840\,km\,s$^{-1}$. also CO continuum emission, latter implying that it carries significant dust. estimate a total mass...
The role of feedback in triggering or quenching star formation and hence driving galaxy evolution can be directly studied with high resolution integral field observations. manifestation shocks is particularly important to examine mergers, where violent interactions gas takes place the interstellar medium during course galactic collision. As part our effort systematically study local population luminous infrared galaxies within Great Observatories All-Sky LIRG Survey, we undertook Keck OSIRIS...
Abstract Nuclear rings are excellent laboratories for studying intense star formation. We present results from a study of nuclear star-forming in five nearby normal galaxies the Star Formation Radio Survey (SFRS) and four local LIRGs Great Observatories All-sky LIRG at sub-kiloparsec resolutions using Very Large Array high-frequency radio continuum observations. find that ring formation (NRSF) contributes 49%–60% total LIRGs, compared to 7%–40% galaxies. characterize 57 individual regions...
We present the analysis of $\sim 100$pc-scale compact radio continuum sources detected in 63 local (Ultra) Luminous Infrared Galaxies (U/LIRGs; $L_{\rm IR} \ge 10^{11} L_\odot$), using FWHM $\lesssim 0''.1 - 0''.2$ resolution 15 and 33 GHz observations with Karl G. Jansky Very Large Array. identify a total 133 effective radii 8 170pc, which are classified into four main categories -- "AGN" (AGN), "AGN/SBnuc" (AGN-starburst composite nucleus), "SBnuc" (starburst nucleus) "SF" (star-forming...