41 citations · 145 across the 12 of their papers we have counts for
14 papers
MorphingNet: Symbolic Regression Where the Network Is the Formula
Jincheng Gao, Jiahe Yi, Shuo Sun
We introduce MorphingNet, a network for symbolic regression (SR) whose units change their function continuously. Instead of searching over expressions built from a fixed operator l…
Thioacetaldehyde (CH3CHS) on interstellar ices: a key molecule to unravel two chemical dichotomies in the ISM
María Mallo, Miguel Sanz-Novo, Marcelino Agúndez +6
Thioacetaldehyde (CH3CHS), recently detected in TMC-1, has an abundance approximately 36 times lower than its oxygen analog, acetaldehyde (CH3CHO). This makes the CH3CHS/CH3CHO pai…
Laboratory spectroscopy, theoretical characterization, and astronomical search for syn-propenethial (CH2CHCHS)
Germán Molpeceres, Carlos Cabezas, Marcelino Agúndez +5
We report the laboratory characterization of the higher-energy isomer of propenethial, syn-CH2CHCHS. While the lower-energy isomer, anti-CH2CHCHS, was detected in the interstellar…
Discovery of linear propadienone: Study of the chemistry of linear and cyclic HCO and HCS in TMC-1
G. Esplugues, J. C. Loison, M. Agúndez +4
We report the first detection in space of propadienone, the linear isomer (l-HCO) of cyclopropenone (c-HCO). We also report the first detection of the isotopologue…
Ion-molecule routes towards cycles in TMC-1. An automated study of the C2H4 + CH2CCH+ reaction
María Mallo, Marcelino Agúndez, Carlos Cabezas +3
Cyclopentadiene (c-C5H6) is considered a key molecule in the formation of polycyclic aromatic hydrocarbons (PAHs) in the interstellar medium (ISM). The synthesis of PAHs from simpl…
Piecing together formic acid isomerism in dark clouds. Detection of cis-formic acid in TMC-1 and astrochemical modeling
G. Molpeceres, M. Agúndez, M. Mallo +6
The presence of molecular isomers in interstellar environments has become a topic of growing interest within the astrochemical community. Contrary to predictions based on thermodyn…
Discovery of interstellar phenalene (-CH): A new piece for the chemical puzzle of PAHs in space
Carlos Cabezas, Marcelino Agúndez, Cristóbal Pérez +10
We present the discovery of the unsubstituted polycyclic aromatic hydrocarbon (PAH) phenalene (-CH) in TMC-1 as part of the QUIJOTE line survey. In spite of the lo…
First detection of HS2 in a cold dark cloud
G. Esplugues, M. Agúndez, G. Molpeceres +5
We report the first detection of HS2 towards the cold dark cloud TMC-1. This is the first observation of a chemical species containing more than one sulphur atom in this type of so…
Conformational isomerism of methyl formate: new detections of the higher-energy trans conformer and theoretical insights
Miguel Sanz-Novo, Germán Molpeceres, Víctor M. Rivilla +1
In recent astrochemical studies it has become crucial to study all the complete conformational panorama of the molecule, some of which are potentially detectable in the interstella…
Detection of thioacetaldehyde (CH3CHS) in TMC-1: sulfur-oxygen differentiation along the hydrogenation sequence
M. Agundez, G. Molpeceres, C. Cabezas +5
In recent years the chemistry of sulfur in the interstellar medium has experienced a renewed interest due to the detection of a large variety of molecules containing sulfur. Here w…
The rich interstellar reservoir of dinitriles: Detection of malononitrile and maleonitrile in TMC-1
M. Agundez, C. Bermudez, C. Cabezas +7
While the nitrile group is by far the most prevalent one among interstellar molecules, the existence of interstellar dinitriles (molecules containing two -CN groups) has recently b…
A sequential acid-base (SAB) mechanism in the interstellar medium: The emergence of cis formic acid in dark molecular clouds
Juan García de la Concepción, Izaskun Jiménez-Serra, José Carlos Corchado +5
The abundance ratios between isomers of a COM observed in the ISM provides valuable information about the chemistry and physics of the gas and eventually, the history of molecular…
Radical Addition and H Abstraction Reactions in C2H2, C2H4 and C2H6: A Gateway for Ethyl and Vinyl Bearing Molecules in the Interstellar Medium
German Molpeceres, Victor M. Rivilla
Recent interstellar detections include a significant number of molecules containing vinyl (C2H3) and ethyl (C2H5) groups in their structure. For several of these molecules, there i…
The trans/cis ratio of formic, HCOOH, and thioformic, HC(O)SH, acids in the Interstellar Medium
J. García de la Concepción, L. Colzi, I. Jiménez-Serra +6
We studied theoretically the cis-trans isomerization reactions of two astrophysically relevant acids, formic acid (HCOOH) and thioformic acid (HC(O)SH), where the latter has recent…