13 papers
Chemical diversity of dense cores in Orion B: The role of the environment
Helena J. Mazurek, Maryvonne Gerin, Pierre Gratier +26
Prestellar cores are the sites of the earliest stages of star formation. Dust continuum observations are often used to identify and characterize their properties yet only a small f…
First Observation of CO Emission and foreground absorption Toward the Galactic Center with JWST
J. Qiu, A. Ciurlo, M. R. Morris +11
CO is an important, stable, and abundant molecule in the Universe, but it is very difficult to detect because it has no observable pure rotational transitions. The unique sensi…
Spatial distribution of organics in the Horsehead nebula: Signposts of chemistry driven by atomic carbon
Claudio Hernández-Vera, Viviana V. Guzmán, Jérôme Pety +10
(Abridged) Complex organic molecules (COMs) are considered essential precursors to prebiotic species. While COMs were once expected to be efficiently destroyed under UV-irradiated…
Weak, extended water vapor emission in the Horsehead nebula
Dariusz C. Lis, Vincent Maillard, Emeric Bron +4
We analyzed archival Herschel observations of water vapor emission toward the Horsehead photon dominated region (PDR), along with supporting ground-based and airborne observations…
Interstellar medium phases and abundances in the central parsec: A JWST MIRI/MRS view of the Galactic center
P. Vermot, A. Ciurlo, D. Rouan +8
We used newly obtained observations from the Mid-Infrared Instrument (MIRI) equipped with the Medium Resolution Spectrometer (MRS) aboard the James Webb Space Telescope (JWST) to e…
A Tentative Detection of Molecular Hydrogen (H) Emission Lines at Cosmic Dawn
Madisen Johnson, Blakesley Burkhart, Francesco D'Eugenio +11
We present a theoretical framework for interpreting far-ultraviolet (FUV) fluorescent emission from molecular hydrogen (H) in high-redshift galaxies, motivated by the unique ca…