Astrochem Coffee

Discovery of linear propadienone: Study of the chemistry of linear and cyclic H$_2$C$_3$O and H$_2$C$_3$S in TMC-1 We report the first detection in space of propadienone, the linear isomer (l-H$_2$C$_3$O) of cyclopropenone (c-H$_2$C$_3$O). We also report the first detection of the isotopologue c-H$_2$$^{13}$CCCO,…

Discovery of linear propadienone: Study of the chemistry of linear and cyclic H2C3O and H2C3S in TMC-1

Esplugues et al. arXiv

Chemical evolution in high-mass star-forming regions Growing evidence shows that most stars in the Milky Way, including the Sun, are born in high-mass star-forming regions, but due to both observational and theoretical challenges, our understanding of…

Chemical evolution in high-mass star-forming regions

Fontani et al. arXiv (Frontiers)

arxiv.org/abs/2511.14326

Detection of six isotopologues of CH3CCCCH in TMC-1 with the QUIJOTE line survey

Cabezas et al. A&A

www.aanda.org/articles/aa/...

Observations of sulfuretted species in HL Tau

Rivière-Marichalar in A&A

www.aanda.org/articles/aa/...

Methylamine Formation on Amorphous Solid Water via the Diffusive CH3 + NH2 Reaction as Investigated by the Cs+ Ion Pickup Method

Iguchi et al. ACS Earth & Space Chemistry

pubs.acs.org/doi/10.1021/...

Spectroscopic Detection and Characterization of Cyanooxomethylium, NCCO+

Bast et al. JPCA

pubs.acs.org/doi/10.1021/...

Collisional Dynamics of NC4NH+ with H2 in the Interstellar Medium Abstract. The present work explores the quantum dynamics of protonated dicyanoacetylene (NC4NH+) in collision with both para- and ortho-H2 over the tempera

Collisional Dynamics of NC4NH+ with H2 in the Interstellar Medium

Chahal et al. MNRAS

academic.oup.com/mnras/advanc...

JWST observations of cosmic-ray-excited H$_2$ in Barnard 68: spatial variations and constraints on cosmic-ray attenuation We present James Webb Space Telescope (JWST) NIRSpec observations of the starless dark cloud Barnard 68 that reveal the spatially-resolved signature of cosmic-ray excited molecular hydrogen…

JWST observations of cosmic-ray-excited H2 in Barnard 68: spatial variations and constraints on cosmic-ray attenuation

Neufeld et al., to appear in ApJ

arxiv.org/abs/2511.16003

Postdoctoral Research Scientist in Protoplanetary Disks and Planet Formation available with Jane Huang at Columbia University.

Deadline: 22 December

aas.org/jobregister/...

#academicjobs
#postdocs
#postdocpositions

VUV Photoionization Study of the Gas Formation of the Indene-A Molecular Building Block of Nonplanar PAHs

Li et al JPCA

pubs.acs.org/doi/10.1021/...

Millimeter-wave Spectrum Analysis and Searches for 2-aminopropenenitrile ( ) toward the Galactic Center Sources Sgr B2(N1) and G+0.693–0.027

Luková et al. ApJ

iopscience.iop.org/article/10.3...

Sense and Sensitivity - I. Uncertainty analysis of the gas-phase chemistry in AGB outflows Chemical reaction networks are central to all chemical models. Each rate coefficient has an associated uncertainty, which is generally not taken into account when calculating the chemistry. We…

Sense and Sensitivity - I. Uncertainty analysis of the gas-phase chemistry in AGB outflows

Van de Sande et al. arXiv (MNRAS)

arxiv.org/abs/2511.13638

Unveiling the Chemical Complexity and C/O Ratio of the HD 163296 Protoplanetary Disk: Constraints from Multi-line ALMA Observations of Organics, Nitriles, Sulfur-bearing, and Deuterated Molecules The physical and chemical conditions within a protoplanetary disk play a crucial role in determining its chemical composition, which is subsequently inherited by any forming planets. To probe these…

Unveiling the Chemical Complexity and C/O Ratio of the HD 163296 Protoplanetary Disk: Constraints from Multi-line ALMA Observations of Organics, Nitriles, Sulfur-bearing, and Deuterated Molecules

Kashyap et al. arXiv (ApJS)

arxiv.org/abs/2511.10882

The November AstroCheminar from the ACS Astrochemistry Subdivision is Wed 19 Nov at 2 PM ET feat. Dr. Haley Scolati of the University of British Columbia.

"From Code to Cloud: Machine Learning Approaches to Complex Interstellar Chemistry."

Register (free!) at:

buff.ly/bqkFI0o

Astrochem Coffee Catch our latest episode directly below. Find other ways to listen, get all the papers and info from our episodes and catch up on those you missed, and find links to other useful resources all via t...

Astrochemistry is the study of molecules in space - where they are, how they got there, and what they are doing! If that sounds fun to you, check us out on YouTube or your favorite podcatcher. Monthly interviews with astrochemists, history of the field, journal articles, and more! 🧪

Molecular Observations of the Protoplanetary Nebula Frosty Leo: A Unique Window into Superoxygen Chemistry - IOPscience

Gold & Ziurys ApJ

iopscience.iop.org/article/10.3...

Infrared Spectra of Protonated Phenanthridine (C13H9NH+) and Isomers of Monohydrogenated Phenanthridine (C13H9NH and 1-, 2-, 7-, 9-, and 10-HC13H9N) Isolated in Solid Para-Hydrogen

👉 Implications for the UIR bands are discussed.

Yang et al. JPCA

pubs.acs.org/doi/10.1021/...

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. - YouTube

Check out our interview with Jane Huang, Assistant Professor of Astronomy at Columbia, from our October 2025 episode!

Carbox: an end-to-end differentiable astrochemical simulation framework Since the first observations of interstellar molecules, astrochemical simulations have been employed to model and understand its formation and destruction path- ways. With the advent of…

Carbox: an end-to-end differentiable astrochemical simulation framework.

"a new astrochemical simulation code that leverages the modern high-performance transformation framework Jax ... that can easily utilize GPU acceleration"

Vermariën et al. arXiv

A Submillimeter Survey of CS Excitation in Protoplanetary Disks: Evidence of X-ray-Driven Sulfur Chemistry The sulfur chemistry in protoplanetary disks influences the properties of nascent planets, including potential habitability. Although the inventory of sulfur molecules in disks has gradually…

A Submillimeter Survey of CS Excitation in Protoplanetary Disks: Evidence of X-ray-Driven Sulfur Chemistry

Law et al. arXiv (ApJ)

Alexander Dalgarno and the development of astrochemistry The interdisciplinary field of astrochemistry arose during the 1970s as observations in previously unexplored parts of the electromagnetic spectrum began to reveal the extent of a molecular component…

Alexander Dalgarno and the Development of Astrochemistry

An article prepared by John Black to accompany a talk at a meeting on the History of Astrochemistry in October at Burlington House, London organized by the Historical Group of the Royal Society of Chemistry.

Adsorption and condensation of molecules on astrophysical dust grain surfaces: Ab-initio calculalations and kinetic Monte Carlo simulations The adsorption of volatile molecules onto dust grain surfaces fundamentally influences dust-related processes, including condensation of gas-phase molecules, dust coagulation, and planet formation in…

Adsorption and condensation of molecules on astrophysical dust grain surfaces: Ab-initio calculations and kinetic Monte Carlo simulations

Wang et al. arXiv (submitted to ApJ)

JWST Reveals Carbon-rich Chemistry in a Transitional Disk We present JWST-MIRI Medium Resolution Spectrometer (MRS) observations of the Classical T Tauri stars GM Aur and RX J1615.3-3255 (J1615), both hosting transitional disks. Despite their similar…

JWST Reveals Carbon-rich Chemistry in a Transitional Disk

Volz et al. arXiv (AJ)

Mid‐infrared Spectroscopy of Protonated Benzonitrile, 2‐Cyanonaphthalene, and 9‐Cyanoanthracene for Astrochemical Consideration Experimental infrared absorption spectra of three protonated cyano-substituted PAHs measured by infrared multiple photon dissociation using the free-electron laser Free-Electron Laser for Infrared…

Mid‐infrared Spectroscopy of Protonated Benzonitrile, 2‐Cyanonaphthalene, and 9‐Cyanoanthracene for Astrochemical Consideration

Rasmussen et al. Chem Phys Chem

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. - YouTube

Check out our Interview with Patrick Sheehan, NRAO Scientist, from our October 2025 Episode!

Observational evidence for a possible link between PAH emission and dust trap locations in protoplanetary disks Polycyclic Aromatic Hydrocarbons (PAHs) are commonly detected in protoplanetary disks, but it is unclear what causes the wide range of intensities across the samples. In this work, the measured PAH…

Observational evidence for a possible link between PAH emission and dust trap locations in protoplanetary disks.

van der Marel et al. arXiv (A&A)

Low-Temperature Kinetics of the HCCN + O2 Reaction in an Extended Laval Nozzle with Detection by Chirped-Pulse Fourier-Transform Millimeter-Wave Spectroscopy We report the first low-temperature kinetics measurements of an HCCN radical–radical reaction. We measured the bimolecular rate coefficients for the HCCN + O2 reaction under pseudo-first-order…

Low-Temperature Kinetics of the HCCN + O2 Reaction in an Extended Laval Nozzle with Detection by Chirped-Pulse Fourier-Transform Millimeter-Wave Spectroscopy

Behzadfar et al. ACS E&SC

Astrochem Coffee Catch our latest episode directly below. Find other ways to listen, get all the papers and info from our episodes and catch up on those you missed, and find links to other useful resources all via t...

There is an opening for a PhD student at the University of Valladolid (Spain) to work with Amanda Steber on rotational spectroscopy for astrochemical applications as well as combustion chemistry applications. Deadline to apply is Nov 21st, 2025. Contact Amanda directly - email is on our website.

Colors of Life in the Clouds: Biopigments of Atmospheric Microorganisms as a New Signature to Detect Life on Planets like Earth

Coelho et al. ApJL

Call for Nominations - Laboratory Astrophysics Division The Laboratory Astrophysics Division (LAD) of the American Astronomical Society (AAS) annually invites nominations for the Laboratory Astrophysics Prize, the Early Career Award and the Dissertation…

The AAS Laboratory Astrophysics Division (LAD) has an open call for nominations for its 2026 Dissertation Award. The prize includes a cash award, a citation, and an invited lecture by the recipient at a meeting of the Division. Nominations are due December 31, 2025, at 11:59 PM ET.