High-resolution Observations of H i in the IC 63 Reflection Nebula

Photodissociation regions (PDRs), where the (far-)ultraviolet light from hot young stars interact with the gas in surrounding molecular clouds, provide laboratories for understanding the nature and role of feedback by star formation on the interstellar medium. While the general nature of PDRs is wel...

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Bibliographic Details
Published in:The Astronomical journal 2023-06, Vol.165 (6), p.243
Main Authors: Bonne, Lars, Andersson, B-G, Minchin, Robert, Soam, Archana, Yaldaei, Joshua, Kulas, Kristin, Karoly, Janik, Knee, Lewis B. G., Kumar, Siddharth, Roy, Nirupam
Format: Article
Language:English
Subjects:
Astrochemistry
Astronomy
Hydrogen atoms
Interferometric observation
Interstellar clouds
Interstellar matter
Interstellar medium
Kinematics
Molecular clouds
Morphology
Nebulae
Photodissociation
Photodissociation regions
Reflection
Star & galaxy formation
Star formation
Ultraviolet radiation
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Summary:Photodissociation regions (PDRs), where the (far-)ultraviolet light from hot young stars interact with the gas in surrounding molecular clouds, provide laboratories for understanding the nature and role of feedback by star formation on the interstellar medium. While the general nature of PDRs is well understood—at least under simplified conditions—the detailed dynamics and chemistry of these regions, including gas clumping, evolution over time, etc., can be very complex. We present interferometric observations of the 21 cm atomic hydrogen line, combined with [C ii ] 158 μ m observations, toward the nearby reflection nebula IC 63. We find a clumpy H i structure in the PDR, and a ring morphology for the H i emission at the tip of IC 63. We further unveil kinematic substructure, of the order of 1 km s −1 , in the PDR layers and several legs that will disperse IC 63 in
ISSN:0004-6256
1538-3881
DOI:10.3847/1538-3881/accf85