Modeling C H Emissio2 in Herbig Disks UsingThermochemical Simulations

Authors:

Ifediora Nwakuche, Jenny Calahan, Karin berg

Date Created:

2025-01-01

Course Title:

Professor:

Not specified

About Paper:

Protoplanetary disks are rotating structures of gas and dust Herbig disks. Using a thermochemical model (DALI), we surrounding newly formed stars, from which planets and systematically investigate how variations in disk structure and planetary systems eventually emerge. Understanding the chemical elemental abundances influence the formation, destruction, and composition and physical structure of these disks is crucial observational signatures of C2H. The simulations aim to reproduce for revealing the molecular processes driving solar system distinct radial ring structures of C H2consistent with recent formation. Herbig Ae/Be disks, which orbit intermediate-mass Atacama Large Millimeter/submillimeter Array observations, stars ranging from approximately two to ten solar masses, exhibit offering insights into the underlying photochemical processes complex chemistry driven by intense ultraviolet radiation from and physical conditions driving planet formation. We find that the central star. Carbon-rich molecules, such as the ethynyl introducing radial density gaps displaces the regions of peak 2 H radical (C 2), stand out due to their strong dependence on abundance outward behind the gap, in contrast to smooth disk photochemistry. Previous observations of the photochemistry models where C H2tends to be concentrated in the inner disk near have revealed unexpectedly high quantities of C H i2 several the central star.

Abstract:

Protoplanetary disks are rotating structures of gas and dust Herbig disks. Using a thermochemical model (DALI), we surrounding newly formed stars, from which planets and systematically investigate how variations in disk structure and planetary systems eventually emerge. Understanding the chemical elemental abundances influence the formation, destruction, and composition and physical structure of these disks is crucial observational signatures of C2H. The simulations aim to reproduce for revealing the molecular processes driving solar system distinct radial ring structures of C H2consistent with recent formation. Herbig Ae/Be disks, which orbit intermediate-mass Atacama Large Millimeter/submillimeter Array observations, stars ranging from approximately two to ten solar masses, exhibit offering insights into the underlying photochemical processes complex chemistry driven by intense ultraviolet radiation from and physical conditions driving planet formation. We find that the central star. Carbon-rich molecules, such as the ethynyl introducing radial density gaps displaces the regions of peak 2 H radical (C 2), stand out due to their strong dependence on abundance outward behind the gap, in contrast to smooth disk photochemistry. Previous observations of the photochemistry models where C H2tends to be concentrated in the inner disk near have revealed unexpectedly high quantities of C H i2 several the central star.

Source:

Harvard / Kennedi Munson, Tamarra James-Todd / 2025

Topics:

disk, structure, star, herbig, formation, simulation, model, planet, system, abundance, physical, processe

Co-authors:

@ifedioranwakuche174 , @jennycalahan175 , @karinberg176