A5026390621- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Molecular Spectroscopy and Structure
- Atmospheric Ozone and Climate
- Astro and Planetary Science
- Galaxies: Formation, Evolution, Phenomena
- Spectroscopy and Laser Applications
- Astronomy and Astrophysical Research
- Astrophysical Phenomena and Observations
- Advanced Chemical Physics Studies
- Astronomical Observations and Instrumentation
- Atomic and Molecular Physics
- Atmospheric chemistry and aerosols
- Spacecraft and Cryogenic Technologies
- Ionosphere and magnetosphere dynamics
- SAS software applications and methods
- Planetary Science and Exploration
- Astrophysics and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Advanced Combustion Engine Technologies
- Methane Hydrates and Related Phenomena
- Geophysics and Gravity Measurements
- Scientific Research and Discoveries
- Medical Imaging Techniques and Applications
- Superconducting and THz Device Technology
Spanish National Observatory
2015-2024
Centro de Astrobiología
2023-2024
Instituto Nacional de Técnica Aeroespacial
2024
Consejo Superior de Investigaciones Científicas
2024
RIKEN
2024
Pioneer (Japan)
2024
Instituto Geográfico Nacional
1997-2022
Institut de Planétologie et d'Astrophysique de Grenoble
2010-2017
Centre National de la Recherche Scientifique
2016
University of Cologne
2008-2011
Aims. We investigate the fueling and feedback of star formation nuclear activity in NGC 1068, a nearby (D = 14 Mpc) Seyfert 2 barred galaxy, by analyzing distribution kinematics molecular gas disk. aim to understand if how accretion can self-regulate.
`Water In Star-forming regions with Herschel' (WISH) is a key program on the Herschel Space Observatory designed to probe physical and chemical structure of young stellar objects using water related molecules follow abundance from collapsing clouds planet-forming disks. About 80 sources are targeted covering wide range luminosities evolutionary stages, cold pre-stellar cores warm protostellar envelopes outflows disks around stars. Both HIFI PACS instruments used observe variety lines H2O,...
We have used the Atacama Large Millimeter Array (ALMA) to map emission of CO(6-5) molecular line and 432 {\mu}m continuum from 300 pc-sized circumnuclear disk (CND) nearby Seyfert 2 galaxy NGC 1068 with a spatial resolution ~4 pc. These observations spatially resolve CND and, for first time, image dust emission, gas distribution, kinematics 7-10 pc-diameter that represents submillimeter counterpart putative torus 1068. fitted nuclear spectral energy distribution using ALMA near mid-infrared...
Context . JWST has taken the sharpest and most sensitive infrared (IR) spectral imaging observations ever of Orion Bar photodis-sociation region (PDR), which is part nearest massive star-forming Nebula, often considered to be ‘prototypical’ strongly illuminated PDR. Aims We investigate impact radiative feedback from stars on their natal cloud focus transition H II atomic PDR – crossing ionisation front (IF) –, subsequent molecular dissociation (DF). Given prevalence PDRs in interstellar...
We investigate the fueling and feedback of nuclear activity in Seyfert 2 galaxy NGC1068, by studying distribution kinematics molecular gas torus its connections. use ALMA to image emission a set tracers circumnuclear disk (CND) using CO(2-1), CO(3-2) HCO+(4-3) lines with spatial resolutions ~0.03"-0.09"(2-6pc). resolves CND as an asymmetric ringed D~400pc-size mass ~1.4x10^8 Msun. The inner edge ring is associated edge-brightened arcs NIR polarized identified working surface AGN ionized...
Aims. We present a detailed analysis of Atacama Large Millimeter/submillimeter Array (ALMA) Bands 7 and 9 data CO, HCO+, HCN, CS, augmented with Plateau de Bure Interferometer (PdBI) the ~200 pc circumnuclear disc (CND) ~1.3 kpc starburst ring (SB ring) NGC 1068, nearby (D = 14 Mpc) Seyfert 2 barred galaxy. aim to determine physical characteristics dense gas in CND, establish whether different line intensity ratios we find within as well between CND SB ring, are due excitation effects (gas...
We present the first ~7.5'×11.5' velocity-resolved (~0.2 km s-1) map of [C ii] 158 μm line toward Orion molecular cloud 1 (OMC 1) taken with Herschel/HIFI instrument. In combination far-infrared (FIR) photometric images and maps H41α hydrogen recombination CO J=2-1 lines, this data set provides an unprecedented view intricate small-scale kinematics ionized/PDR/molecular gas interfaces radiative feedback from massive stars. The main contribution to luminosity (~85 %) is extended,...
Evidence is mounting that the small bodies of our Solar System, such as comets and asteroids, have at least partially inherited their chemical composition from first phases System formation. It then appears molecular complexity these most likely related to earliest stages star therefore important characterize understand how evolution changes with solar-type protostellar evolution. We present here Large Program "Astrochemical Surveys At IRAM" (ASAI). Its goal carry out unbiased millimeter...
In order to study the fragmentation of massive dense cores, which constitute cluster cradles, we observed with PdBI in most extended configuration continuum at 1.3 mm and CO(2-1) emission four cores. We detect dust condensations down ~0.3 Msun separate millimeter sources 0.4" or ~1000 AU, comparable sensitivities separations reached optical/infrared studies clusters. The high angular resolution images reveal high-velocity knots usually aligned previously known outflow directions. This,...
GEMS is an IRAM 30m Large Program whose aim determining the elemental depletions and ionization fraction in a set of prototypical star-forming regions. This paper presents first results from dark cloud TMC 1. Extensive millimeter observations have been carried out with telescope (3 mm 2 mm) 40m Yebes (1.3 cm 7 to determine fractional abundances CO, HCO
High-mass stars and star clusters commonly form within hub-filament systems. Monoceros R2 (hereafter Mon R2), at a distance of 830 pc, harbors one the closest such systems, making it an excellent target for case studies.We investigate morphology, stability dynamical properties system.We employ observations 13CO C18O 1→0 2→1 lines obtained with IRAM-30m telescope. We also use H2 column density maps derived from Herschel dust emission observations.We identified filamentary network in DisPerSE...
Context. In the past few years, there has been a rise in detection of streamers, asymmetric flows material directed toward protostellar disk with from outside star's natal core. It is unclear how they affect process mass accretion, particular beyond Class 0 phase. Aims. We investigate gas kinematics around Per-emb-50, I source crowded star-forming region NGC 1333. Our goal to study infall proceeds envelope scales this source. Results. discover streamer delivering Per-emb-50 H$_2$CO and...
Abstract Massive stars disrupt their natal molecular cloud material through radiative and mechanical feedback processes. These processes have profound effects on the evolution of interstellar matter in our Galaxy throughout universe, from era vigorous star formation at redshifts 1–3 to present day. The dominant can be probed by observations Photo-Dissociation Regions (PDRs) where far-ultraviolet photons massive create warm regions gas dust neutral atomic gas. PDR emission provides a unique...
Most low-mass stars form in stellar clusters that also contain massive stars, which are sources of far-ultraviolet (FUV) radiation. Theoretical models predict this FUV radiation produces photodissociation regions (PDRs) on the surfaces protoplanetary disks around affects planet formation within disks. We report James Webb Space Telescope and Atacama Large Millimeter Array observations a FUV-irradiated disk Orion Nebula. Emission lines detected from PDR; modeling their kinematics excitation...
There is observational evidence that nuclear winds and X-rays can heavily influence the physical conditions chemical abundances of molecular gas in circumnuclear disks (CND) Active Galactic Nuclei (AGN). In this paper we probe status CND NGC 1068, a prototypical Seyfert 2 galaxy. Precedent claims chemistry nucleus 1068 abnormal by galactic standards were based on high HCN/CO luminosity ratio measured CND. Results from new observations obtained survey have served to derive species such as...
We have carried out a survey of reactive ions (CO+, HOC+, HC18O+, SO+) and cyclopropenylidene (C3H2) in three prototypical photodissociation regions (PDRs), the reflection nebula NGC 7023, Orion Bar planetary (PN) 7027. The ion CO+ has been detected all targets with fractional abundances ranging from ~10-11 to ~a few 10-9. Its spatial distribution 7023 show that arises innermost part (Av < 2 mag) PDR. In 7027, lines shows an expansion velocity higher than CO lines. This high is consistent...