#interstellar medium

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12 papers match

astro-ph.GA2026

Galactic HII regions in LAMOST Medium-Resolution Spectroscopic Survey of Nebulae

Yunning Zhao, Wei Zhang, Lin Ma +10

The paper uses LAMOST medium‑resolution spectra to confirm 255 Galactic H II regions in the outer Milky Way and measures their electron temperature, density, and oxygen abundance t…

#galactic h ii regions#spectroscopic surveys#abundance gradients#interstellar medium
astro-ph.GA2026

Exploring the Limits of Spectral Line Stacking in Spectral Line Data and Application Toward the Detection of Bulk C Enrichment of Aromatics in TMC-1

Miya Duffy, Ryan A. Loomis, Martin S. Holdren +9

The paper evaluates spectral line stacking and matched‑filter techniques to detect faint 13C‑substituted aromatic molecules in the cold cloud TMC‑1, demonstrating the method’s abil…

#spectral line stacking#isotopic ratios#polycyclic aromatic hydrocarbons#interstellar medium
astro-ph.GA2026

The evolution of galaxy dust scaling relations in the COLIBRE simulations

Aswin P. Vijayan, James W. Trayford, Joop Schaye +11

The paper uses the COLIBRE cosmological simulations to study how dust mass, composition, and grain sizes in galaxies evolve from the early Universe to the present, comparing predic…

#dust evolution#cosmological simulations#galaxy scaling relations#interstellar medium
astro-ph.GA2026

Space as a spectroscopic laboratory: High-resolution spectroscopy of the [C II] hyperfine structure with SOFIA/upGREAT

S. Kabanovic, V. Ossenkopf-Okada, S. Schlemmer +13

The paper uses high‑resolution SOFIA/upGREAT observations of the 158 µm [13C II] line to directly measure its hyperfine splitting and determine the magnetic‑dipole hyperfine consta…

#interstellar medium#spectroscopy#hyperfine structure#CII line
astro-ph.GA2026

The COLIBRE-SKIRT pipeline: Calibration-free dust radiative transfer postprocessing for cosmological simulations

Andrea Gebek, Maarten Baes, Nick Andreadis +16

The paper introduces the COLIBRE‑SKIRT pipeline, a calibration‑free method that uses the SKIRT radiative transfer code to generate multi‑wavelength mock observations from large‑vol…

#dust radiative transfer#cosmological galaxy simulations#interstellar medium#synthetic spectra
astro-ph.GA2026

The World Cup in space: Finding ionised buckyballs in the ISM with CARMENES

J. Maíz Apellániz

The paper reports the detection of ionised buckminsterfullerene (C₆₀⁺) in the interstellar medium by using multi‑epoch CARMENES spectra to shift diffuse interstellar bands away fro…

#diffuse interstellar bands#ionised buckminsterfullerene#carmenes spectrograph#telluric correction