Mostrar el registro sencillo del ítem

Three-dimensional Projection Effects on Chemistry in a Planck Galactic Cold Clump

dc.contributor.authorGe J.X.
dc.contributor.authorMardones D.
dc.contributor.authorHe J.H.
dc.contributor.authorRawlings J.M.C.
dc.contributor.authorLiu S.-Y.
dc.contributor.authorLee J.-E.
dc.contributor.authorTatematsu K.
dc.contributor.authorLiu T.
dc.contributor.authorZhu L.
dc.contributor.authorChang Q.
dc.contributor.authorInostroza N.
dc.contributor.authorFeng S.
dc.date.accessioned2020-09-02T22:19:20Z
dc.date.available2020-09-02T22:19:20Z
dc.date.issued2020
dc.identifier10.3847/1538-4357/ab7007
dc.identifier.citation891, 1, -
dc.identifier.issn0004637X
dc.identifier.urihttps://hdl.handle.net/20.500.12728/4704
dc.descriptionOffsets of molecular line emission peaks from continuum peaks are very common but frequently difficult to explain with a single spherical cloud chemical model. We propose that the spatial projection effects of an irregular three-dimensional (3D) cloud structure can be a solution. This work shows that the idea can be successfully applied to the Planck cold clump G224.4-0.6 by approximating it with four individual spherically symmetric cloud cores whose chemical patterns overlap with each other to produce observable line maps. With the empirical physical structures inferred from the observation data of this clump and a gas-grain chemical model, the four cores can satisfactorily reproduce its 850 μm continuum map and the diverse peak offsets of CCS, HC3N, and N2H+ simultaneously at chemical ages of about 8 105 ∼ 3 106 yr. The 3D projection effects on chemistry has the potential to explain such asymmetrical distributions of chemicals in many other molecular clouds. © 2020. The American Astronomical Society. All rights reserved.
dc.language.isoen
dc.publisherInstitute of Physics Publishing
dc.titleThree-dimensional Projection Effects on Chemistry in a Planck Galactic Cold Clump
dc.typeArticle


Ficheros en el ítem

Thumbnail
Nombre:
item_2-s2.0-85084674578.pdf
Tamaño:
2.165Kb
Formato:
PDF
Ver/

Este ítem aparece en la(s) siguiente(s) colección(ones)

Mostrar el registro sencillo del ítem