Eric Herbst
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View article: Carbon chain diversity in L1544 and IRAS 16293–2422: an astrochemical pathfinder study for the SKAO
Carbon chain diversity in L1544 and IRAS 16293–2422: an astrochemical pathfinder study for the SKAO Open
Astrochemical observations have revealed a surprisingly high level of chemical complexity, including long carbon chains, in the earliest stages of Sun-like star formation. The origin of these species and whether they undergo further growth…
View article: The Robust Detection and Spatial Distribution of Acetaldehyde in Orion KL: Atacama Large Millimeter/submillimeter Array Observations and Chemical Modeling
The Robust Detection and Spatial Distribution of Acetaldehyde in Orion KL: Atacama Large Millimeter/submillimeter Array Observations and Chemical Modeling Open
Despite the organic molecule inventory detected in the Orion Kleinmann–Low Nebula (Orion KL), acetaldehyde (CH 3 CHO)—one of the most ubiquitous interstellar aldehydes—has not been firmly identified with millimeter-wave interferometry. We …
View article: Role of diffusive and nondiffusive grain-surface processes in cold cores: Insights from the PEGASIS three-phase astrochemical model
Role of diffusive and nondiffusive grain-surface processes in cold cores: Insights from the PEGASIS three-phase astrochemical model Open
Context . Cold, dense cores are unique among structures found in the interstellar medium, as they harbor a rich chemical inventory, including complex organic molecules (COMs), which future evolutionary stages, such as protostellar envelope…
View article: Role of Diffusive and Non-Diffusive Grain-Surface Processes in Cold Cores: Insights from the PEGASIS Three-Phase Astrochemical Model
Role of Diffusive and Non-Diffusive Grain-Surface Processes in Cold Cores: Insights from the PEGASIS Three-Phase Astrochemical Model Open
Cold dense cores are unique among the structures found in the interstellar medium (ISM), as they harbor a rich chemical inventory, including complex organic molecules (COMs), which will be inherited by future evolutionary stages. These mol…
View article: FAUST
FAUST Open
Context . While protostellar outflows are important in terms of mass accretion and angular momentum transport in star formation processes, high-resolution observations of outflows in protobinary systems are still sparse. Aims . We aim to r…
View article: Evidence for Jet/Outflow Shocks Heating the Environment around the Class I Protostellar Source Elias 29: FAUST XXI
Evidence for Jet/Outflow Shocks Heating the Environment around the Class I Protostellar Source Elias 29: FAUST XXI Open
We have observed the late Class I protostellar source Elias 29 at a spatial resolution of 70 au with the Atacama Large Millimeter/submillimeter Array as part of the FAUST Large Program. We focus on the line emission of SO, while that of 34…
View article: Detections of interstellar 2-cyanopyrene and 4-cyanopyrene in TMC-1
Detections of interstellar 2-cyanopyrene and 4-cyanopyrene in TMC-1 Open
Polycyclic aromatic hydrocarbons (PAHs) are among the most ubiquitous compounds in the universe, accounting for up to ~25% of all interstellar carbon. Since most unsubstituted PAHs do not possess permanent dipole moments, they are invisibl…
View article: Maser Activity of Organic Molecules toward Sgr B2(N)
Maser Activity of Organic Molecules toward Sgr B2(N) Open
At centimeter wavelengths, single-dish observations have suggested that the Sagittarius (Sgr) B2 molecular cloud at the Galactic Center hosts weak maser emission from several organic molecules, including CH 2 NH, HNCNH, and HCOOCH 3 . Howe…
View article: Multiple chemical tracers finally unveil the intricate NGC 1333 IRAS 4A outflow system. FAUST XVI
Multiple chemical tracers finally unveil the intricate NGC 1333 IRAS 4A outflow system. FAUST XVI Open
The exploration of outflows in protobinary systems presents a challenging yet crucial endeavour, offering valuable insights into the dynamic interplay between protostars and their evolution. In this study, we examine the morphology and dyn…
View article: Multiple chemical tracers finally unveil the intricate NGC\,1333 IRAS\,4A outflow system. FAUST XVI
Multiple chemical tracers finally unveil the intricate NGC\,1333 IRAS\,4A outflow system. FAUST XVI Open
The exploration of outflows in protobinary systems presents a challenging yet crucial endeavour, offering valuable insights into the dynamic interplay between protostars and their evolution. In this study, we examine the morphology and dyn…
View article: PDRs4All
PDRs4All Open
Context. Mid-infrared emission features are important probes of the properties of ionized gas and hot or warm molecular gas, which are difficult to probe at other wavelengths. The Orion Bar photodissociation region (PDR) is a bright, nearb…
View article: Maser Activity of Organic Molecules toward Sgr B2(N)
Maser Activity of Organic Molecules toward Sgr B2(N) Open
At centimeter wavelengths, single-dish observations have suggested that the Sagittarius (Sgr) B2 molecular cloud at the Galactic Center hosts weak maser emission from several organic molecules, including CH$_2$NH, HNCNH, and HCOOCH$_3$. Ho…
View article: PDRs4All VIII: Mid-IR emission line inventory of the Orion Bar
PDRs4All VIII: Mid-IR emission line inventory of the Orion Bar Open
Mid-infrared emission features probe the properties of ionized gas, and hot or warm molecular gas. The Orion Bar is a frequently studied photodissociation region (PDR) containing large amounts of gas under these conditions, and was observe…
View article: FAUST
FAUST Open
Context. The origin of the chemical diversity observed around low-mass protostars probably resides in the earliest history of these systems. Aims. We aim to investigate the impact of protostellar feedback on the chemistry and grain growth …
View article: PDRs4All
PDRs4All Open
Context . JWST has taken the sharpest and most sensitive infrared (IR) spectral imaging observations ever of the Orion Bar photodis-sociation region (PDR), which is part of the nearest massive star-forming region the Orion Nebula, and ofte…
View article: A far-ultraviolet-driven photoevaporation flow observed in a protoplanetary disk
A far-ultraviolet-driven photoevaporation flow observed in a protoplanetary disk Open
Most low-mass stars form in stellar clusters that also contain massive stars, which are sources of far-ultraviolet (FUV) radiation. Theoretical models predict that this FUV radiation produces photo-dissociation regions (PDRs) on the surfac…
View article: A far-ultraviolet–driven photoevaporation flow observed in a protoplanetary disk
A far-ultraviolet–driven photoevaporation flow observed in a protoplanetary disk Open
Most low-mass stars form in stellar clusters that also contain massive stars, which are sources of far-ultraviolet (FUV) radiation. Theoretical models predict that this FUV radiation produces photodissociation regions (PDRs) on the surface…
View article: Explaining the Chemical Inventory of Orion KL through Machine Learning
Explaining the Chemical Inventory of Orion KL through Machine Learning Open
The interplay of the chemistry and physics that exists within astrochemically relevant sources can only be fully appreciated if we can gain a holistic understanding of their chemical inventories. Previous work by Lee et al. demonstrated th…
View article: Formation of sodium-bearing species in the interstellar medium
Formation of sodium-bearing species in the interstellar medium Open
Sodium-bearing species such as NaCl in the gas phase have been observed in an assortment of carbon-rich and oxygen-rich stellar atmospheres and interstellar environments such as the high-mass protostellar disc surrounding Orion Src1 and th…
View article: PDRs4All III: JWST's NIR spectroscopic view of the Orion Bar
PDRs4All III: JWST's NIR spectroscopic view of the Orion Bar Open
(Abridged) We investigate the impact of radiative feedback from massive stars on their natal cloud and focus on the transition from the HII region to the atomic PDR (crossing the ionisation front (IF)), and the subsequent transition to the…
View article: Rotational spectroscopy of the thioformaldehyde isotopologues H <sub>2</sub> CS and H <sub>2</sub> C <sup>34</sup> S in four interacting excited vibrational states and an account on the rotational spectrum of thioketene, H <sub>2</sub> CCS
Rotational spectroscopy of the thioformaldehyde isotopologues H <sub>2</sub> CS and H <sub>2</sub> C <sup>34</sup> S in four interacting excited vibrational states and an account on the rotational spectrum of thioketene, H <sub>2</sub> CCS Open
An investigation of the rotational spectrum of the interstellar molecule\nthioformaldehyde between 110 and 377 GHz through a pyrolysis reaction revealed\na multitude of absorption lines assignable to H$_2$CS and H$_2$C$^{34}$S in\ntheir lo…
View article: Explaining the Chemical Inventory of Orion KL through Machine Learning
Explaining the Chemical Inventory of Orion KL through Machine Learning Open
The interplay of the chemistry and physics that exists within astrochemically relevant sources can only be fully appreciated if we can gain a holistic understanding of their chemical inventories. Previous work by Lee et al. (2021) demonstr…
View article: PDRs4All
PDRs4All Open
Context . The James Webb Space Telescope (JWST) has captured the most detailed and sharpest infrared (IR) images ever taken of the inner region of the Orion Nebula, the nearest massive star formation region, and a prototypical highly irrad…
View article: Molecular Abundance of the Circumnuclear Region Surrounding an Active Galactic Nucleus in NGC 1068 Based on an Imaging Line Survey in the 3 mm Band with ALMA
Molecular Abundance of the Circumnuclear Region Surrounding an Active Galactic Nucleus in NGC 1068 Based on an Imaging Line Survey in the 3 mm Band with ALMA Open
We present an imaging molecular line survey in the 3 mm band (85–114 GHz) focused on one of the nearest galaxies with an active galactic nucleus (AGN), NGC 1068, based on observations taken with the Atacama Large Millimeter/submillimeter A…
View article: PDRs4All IV. An embarrassment of riches: Aromatic infrared bands in the Orion Bar
PDRs4All IV. An embarrassment of riches: Aromatic infrared bands in the Orion Bar Open
(Abridged) Mid-infrared observations of photodissociation regions (PDRs) are dominated by strong emission features called aromatic infrared bands (AIBs). The most prominent AIBs are found at 3.3, 6.2, 7.7, 8.6, and 11.2 $μ$m. The most sens…
View article: PDRs4All II: JWST's NIR and MIR imaging view of the Orion Nebula
PDRs4All II: JWST's NIR and MIR imaging view of the Orion Nebula Open
The JWST has captured the most detailed and sharpest infrared images ever taken of the inner region of the Orion Nebula, the nearest massive star formation region, and a prototypical highly irradiated dense photo-dissociation region (PDR).…
View article: PDRs4All
PDRs4All Open
Context . Mid-infrared observations of photodissociation regions (PDRs) are dominated by strong emission features called aromatic infrared bands (AIBs). The most prominent AIBs are found at 3.3, 6.2, 7.7, 8.6, and 11.2 µm. The most sensiti…
View article: Detection and modelling of CH3NC in TMC-1
Detection and modelling of CH3NC in TMC-1 Open
Two closely related isomeric pairs of cyanides, CH3[CN/NC] and H2C[CN/NC], are studied in cold, dark interstellar cloud conditions. In contrast to the diverse detections of methyl cyanide (CH3CN) in space, methyl isocyanide (CH3NC) has pre…