151 citations · 1.4k across the 27 of their papers we have counts for
28 papers
Water enhances the formation of refractory sulfur in interstellar ices
Carlos del Burgo Olivares, Hector Carrascosa, Guillermo M. Muñoz Caro +3
Sulfur is the tenth most abundant element in space, yet it is strongly depleted in the gas phase of dense interstellar regions, suggesting sequestration in dust grain components th…
Modeling the UV-photon irradiation of CS-bearing ices in the laboratory with the pyRate gas-grain astrochemical code. New insights into the missing sulfur problem
O. Sipilä, R. Martín-Doménech, W. Riedel +4
Observations indicate that the total abundance of S-bearing species in dense clouds is orders of magnitude lower than the cosmic sulfur abundance. Addressing this "missing sulfur p…
The sulfur plume in the Horsehead nebula: New detections of SH, SH, and CO
Asunción Fuente, Gisela Esplugues, Pablo Rivière-Marichalar +13
Sulfur is essential for life, but its abundance and distribution in the interstellar medium remain uncertain, with over 90% of sulfur undetected in cold molecular clouds. Sulfur al…
Formation and desorption of sulfur chains (HS and S) in cometary ice: effects of ice composition and temperature
H. Carrascosa, G. M. Muñoz Caro, R. Martín-Doménech +3
The reservoir of sulfur accounting for sulfur depletion in the gas of dense clouds and circumstellar regions is still unclear. One possibility is the formation of sulfur chains, wh…
Characterization of carbon dioxide on Ganymede and Europa supported by experiments: Effects of temperature, porosity, and mixing with water
L. Schiltz, B. Escribano, G. M. Muñoz Caro +8
The surfaces of icy moons are primarily composed of water ice that can be mixed with other compounds, such as carbon dioxide. The carbon dioxide (CO stretching fundamental ban…
UV-photoprocessing of acetic acid (CH3COOH)-bearing interstellar ice analogs
C. del Burgo Olivares, H. Carrascosa, B. Escribano +2
Acetic acid (CH3COOH) was detected in the gas toward interstellar clouds, hot cores, protostars and comets. Its formation in ice mantles was proposed and acetic acid awaits detecti…
Physical properties of methanol (CHOH) ice as a function of temperature: Density, infrared band strengths, and crystallization
H. Carrascosa, M. Á. Satorre, B. Escribano +2
The presence of methanol among the common ice components in interstellar clouds and protostellar envelopes has been confirmed by the James Webb Space Telescope. Methanol is often d…
Gas phase Elemental abundances in Molecular cloudS (GEMS) VII. Sulfur elemental abundance
A. Fuente, P. Rivière-Marichalar, L. Beitia-Antero +18
Gas phase Elemental abundances in molecular CloudS (GEMS) is an IRAM 30m large program aimed at determining the elemental abundances of carbon (C), oxygen (O), nitrogen (N), and su…
Gas phase Elemental abundances in Molecular cloudS (GEMS) VI. A sulphur journey across star-forming regions: study of thioformaldehyde emission
G. Esplugues, A. Fuente, D. Navarro-Almaida +10
In the context of the IRAM 30m Large Program GEMS, we present a study of thioformaldehyde in several starless cores located in star-forming filaments of Taurus, Perseus, and Orion.…
Thermal Conductivity measurements of macroscopic frozen Salt Ice analogs of Jovian Icy moons in support of the planned JUICE mission
Cristóbal González Díaz, Sofia Aparicio Secanellas, Guillermo M. Muñoz Caro +9
The study of thermal properties of frozen salt solutions representative of ice layers in Jovian moons is crucial to support the JUpiter ICy moons Explorer (JUICE) (ESA) and Europa…
Photoprocessing of H2S on dust grains: building S chains in translucent clouds and comets
S. Cazaux, H. Carrascosa, G. M. Munoz Caro +4
Context. Sulfur is used as a tracer of the evolution from interstellar clouds to stellar systems. However, most of the expected sulfur in molecular clouds remains undetected. Sulfu…
Gas phase Elemental abundances in Molecular cloudS (GEMS). IV. Observational results and statistical trends
M. Rodríguez-Baras, A. Fuente, P. Riviére-Marichalar +33
Gas phase Elemental abundances in Molecular CloudS (GEMS) is an IRAM 30m Large Program designed to estimate the S, C, N, and O depletions and gas ionization degree, X(e-), in a set…
Gas-phase Elemental abundances in Molecular cloudS (GEMS) III. Unlocking the CS chemistry: the CS+O reaction
N. Bulut, O. Roncero, A. Aguado +36
CS is among the most abundant gas-phase S-bearing molecules in cold dark molecular clouds. It is easily observable with several transitions in the millimeter wavelength range, and…
Gas phase Elemental abundances in Molecular cloudS (GEMS) I. The prototypical dark cloud TMC 1
A. Fuente, D. Navarro, P. Caselli +30
GEMS is an IRAM 30m Large Program whose aim is determining the elemental depletions and the ionization fraction in a set of prototypical star-forming regions. This paper presents t…
Soft X-ray Irradiation of Silicates: Implications on Dust Evolution in Protoplanetary Disks
A. Ciaravella, C. Cecchi-Pestellini, Y. -J. Chen +4
The processing of energetic photons on bare silicate grains was simulated experimentally on silicate films submitted to soft X-rays of energies up to 1.25 keV. The silicate materia…
The negligible photodesorption of methanol ice and the active photon-induced desorption of its irradiation products
Gustavo A. Cruz-Diaz, Rafael Martín-Doménech, Guillermo M. Muñoz Caro +1
Methanol is a common component of interstellar and circumstellar ice mantles and is often used as an evolution indicator in star-forming regions. The observations of gas-phase meth…
The sulfur depletion problem: upper limits on the H2S2, HS2, and S2 gas-phase abundances toward the low-mass warm core IRAS16293-2422
R. Martín-Doménech, I. Jiménez-Serra, G. M. Muñoz Caro +5
A fraction of the missing sulfur in dense clouds and circumstellar regions could be in the form of three species not yet de- tected in the interstellar medium: H2S2, HS2, and S2 ac…
UV photoprocessing of CO2 ice: a complete quantification of photochemistry and photon-induced desorption processes
R. Martín-Doménech, J. Manzano-Santamaría, G. M. Muñoz Caro +4
Ice mantles that formed on top of dust grains are photoprocessed by the secondary ultraviolet (UV) field in cold and dense molecular clouds. UV photons induce photochemistry and de…
Investigation of HNCO isomers formation in ice mantles by UV and thermal processing: an experimental approach
A. Jiménez-Escobar, B. M. Giuliano, G. M. Muñoz Caro +2
Current gas phase models do not account for the abundances of HNCO isomers detected in various environments, suggesting a formation in icy grain mantles. We attempted to study a fo…
Interstellar ice analogs: band strengths of HO, CO, CHOH, and NH in the far-infrared region
B. M. Giuliano, R. M. Escribano, R. Martín-Doménech +2
We measure the band strengths in the far-infrared region of interstellar ice analogs of astrophysically relevant species, such as HO, CO, CHOH, and NH, deposited at…
Thermal desorption of circumstellar and cometary ice analogs
Rafael Martín-Doménech, Guillermo M. Muñoz Caro, Juan Bueno +1
Thermal annealing of interstellar ices takes place in several stages of star formation. Knowledge of this process comes from a combination of astronomical observations and laborato…
Vacuum-UV absorption spectroscopy of interstellar ice analogues. III. Isotopic effects
G. A. Cruz-Diaz, G. M. Muñoz Caro, Y. -J. Chen
This paper reports the first measurements of solid-phase vacuum-ultraviolet (VUV) absorption cross-sections of heavy isotopologues present in icy dust grain mantles of dense inters…
Vacuum-UV spectroscopy of interstellar ice analogs. II. Absorption cross-sections of nonpolar ice molecules
G. A. Cruz-Diaz, G. M. Muñoz Caro, Y. -J. Chen +1
Dust grains in cold circumstellar regions and dark-cloud interiors at 10-20 K are covered by ice mantles. A nonthermal desorption mechanism is invoked to explain the presence of ga…
Vacuum-UV spectroscopy of interstellar ice analogs. I. Absorption cross-sections of polar-ice molecules
G. A. Cruz-Diaz, G. M. Munoz Caro, Y. -J. Chen +1
The VUV absorption cross sections of most molecular solids present in interstellar ice mantles with the exception of H2O, NH3, and CO2 have not been reported yet. Models of ice pho…