From the 1 of 11 linked papers with an AI index.
11 papers
MIAO-ALMA: Shocks and Protostellar Outflows in 70 m-dark clumps with 1 /
Shuting Lin, Siyi Feng, Junzhi Wang +16
To investigate the initial conditions of high-mass star-forming regions, we use SiO (2-1) emission to trace early shock-related kinematics toward sixteen 70 m-dark and massive c…
A tale of two isotopes: Spatial variation in HCN fractionation toward young cores
Sigurd S. Jensen, Silvia Spezzano, Olli Sipilä +3
The paper maps H13CN and HC15N in several young starless and pre‑stellar cores, finds that their column density ratio varies spatially and correlates with H2 column density, and sh…
Using astrochemical models to simulate reactivity experiments on cold surfaces
Valeriia Sokolova, Basile Husquinet, Stephan Diana +7
The development of molecular complexity during stellar and planetary formation owes much to the interaction of gas and dust. When the first astrochemical models including solid-sta…
Deuterium fractionation and CO depletion in Barnard 5
Igor Petrashkevich, Anna Punanova, Paola Caselli +3
Deuterium fractionation provides a key diagnostic of the physical and chemical evolution of prestellar and protostellar cores, where it is strongly linked to CO depletion in cold,…
New Estimate for the Cosmic Ray-Induced Photodissociation Rate in the Interstellar Medium
O. Sipilä, P. Caselli, M. Padovani +5
In the interstellar medium, cosmic rays (CRs) generate a field of ultraviolet (UV) photons via the excitation and subsequent radiative decay of molecules. This UV field i…
First mapping of prebiotic molecule CH2NH in a pre-stellar core
Yuxin Lin, Silvia Spezzano, Olli Sipilä +2
We present the first spatially resolved map of methanimine CH2NH in the prestellar core L1544 using the IRAM 30m telescope. The 2-1 line at 127 GHz was mapped with…