Search: onr:"swepub:oai:DiVA.org:su-215795" >
PHANGS–JWST First R...
PHANGS–JWST First Results : Stellar-feedback-driven Excitation and Dissociation of Molecular Gas in the Starburst Ring of NGC 1365?
- Article/chapterEnglish2023
Publisher, publication year, extent ...
-
2023-02-16
-
American Astronomical Society,2023
-
printrdacarrier
Numbers
-
LIBRIS-ID:oai:DiVA.org:su-215795
-
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-215795URI
-
https://doi.org/10.3847/2041-8213/aca973DOI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:ref swepub-contenttype
-
Subject category:art swepub-publicationtype
Notes
-
We compare embedded young massive star clusters (YMCs) to (sub-)millimeter line observations tracing the excitation and dissociation of molecular gas in the starburst ring of NGC 1365. This galaxy hosts one of the strongest nuclear starbursts and richest populations of YMCs within 20 Mpc. Here we combine near-/mid-IR PHANGS–JWST imaging with new Atacama Large Millimeter/submillimeter Array multi-J CO (1–0, 2–1 and 4–3) and [C ı] (1–0) mapping, which we use to trace CO excitation via R42 = ICO(4−3)/ICO(2−1) and R21 = ICO(2−1)/ICO(1−0) and dissociation via RCICO = I[CI](1−0)/ICO(2−1) at 330 pc resolution. We find that the gas flowing into the starburst ring from northeast to southwest appears strongly affected by stellar feedback, showing decreased excitation (lower R42) and increased signatures of dissociation (higher RCICO) in the downstream regions. There, radiative-transfer modeling suggests that the molecular gas density decreases and temperature and [CI/CO] abundance ratio increase. We compare R42 and RCICO with local conditions across the regions and find that both correlate with near-IR 2 μm emission tracing the YMCs and with both polycyclic aromatic hydrocarbon (11.3 μm) and dust continuum (21 μm) emission. In general, RCICO exhibits ∼0.1 dex tighter correlations than R42, suggesting C ı to be a more sensitive tracer of changing physical conditions in the NGC 1365 starburst than CO (4–3). Our results are consistent with a scenario where gas flows into the two arm regions along the bar, becomes condensed/shocked, forms YMCs, and then these YMCs heat and dissociate the gas.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Schinnerer, Eva
(author)
-
Cao, Yixian
(author)
-
Leroy, Adam
(author)
-
Usero, Antonio
(author)
-
Rosolowsky, Erik
(author)
-
Kruijssen, J. M. Diederik
(author)
-
Chevance, Mélanie
(author)
-
Glover, Simon C. O.
(author)
-
Sormani, Mattia C.
(author)
-
Bolatto, Alberto D.
(author)
-
Sun, Jiayi
(author)
-
Stuber, Sophia K.
(author)
-
Teng, Yu-Hsuan
(author)
-
Bigiel, Frank
(author)
-
Bešlić, Ivana
(author)
-
Grasha, Kathryn
(author)
-
Henshaw, Jonathan D.
(author)
-
Barnes, Ashley T.
(author)
-
den Brok, Jakob S.
(author)
-
Saito, Toshiki
(author)
-
Dale, Daniel A.
(author)
-
Watkins, Elizabeth J.
(author)
-
Pan, Hsi-An
(author)
-
Klessen, Ralf S.
(author)
-
Emsellem, Eric
(author)
-
Anand, Gagandeep S.
(author)
-
Deger, Sinan,1985-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)side0330
(author)
-
Egorov, Oleg V.
(author)
-
Faesi, Christopher M.
(author)
-
Hassani, Hamid
(author)
-
Larson, Kirsten L.
(author)
-
Lee, Janice C.
(author)
-
Lopez, Laura A.
(author)
-
Pety, Jérôme
(author)
-
Sandstrom, Karin
(author)
-
Thilker, David A.
(author)
-
Whitmore, Bradley C.
(author)
-
Williams, Thomas G.
(author)
-
Stockholms universitetFysikum
(creator_code:org_t)
Related titles
-
In:Astrophysical Journal Letters: American Astronomical Society944:22041-82052041-8213
Internet link
Find in a library
To the university's database
- By the author/editor
-
Liu, Daizhong
-
Schinnerer, Eva
-
Cao, Yixian
-
Leroy, Adam
-
Usero, Antonio
-
Rosolowsky, Erik
-
show more...
-
Kruijssen, J. M. ...
-
Chevance, Mélani ...
-
Glover, Simon C. ...
-
Sormani, Mattia ...
-
Bolatto, Alberto ...
-
Sun, Jiayi
-
Stuber, Sophia K ...
-
Teng, Yu-Hsuan
-
Bigiel, Frank
-
Bešlić, Ivana
-
Grasha, Kathryn
-
Henshaw, Jonatha ...
-
Barnes, Ashley T ...
-
den Brok, Jakob ...
-
Saito, Toshiki
-
Dale, Daniel A.
-
Watkins, Elizabe ...
-
Pan, Hsi-An
-
Klessen, Ralf S.
-
Emsellem, Eric
-
Anand, Gagandeep ...
-
Deger, Sinan, 19 ...
-
Egorov, Oleg V.
-
Faesi, Christoph ...
-
Hassani, Hamid
-
Larson, Kirsten ...
-
Lee, Janice C.
-
Lopez, Laura A.
-
Pety, Jérôme
-
Sandstrom, Karin
-
Thilker, David A ...
-
Whitmore, Bradle ...
-
Williams, Thomas ...
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Astronomy Astrop ...
- Articles in the publication
-
Astrophysical Jo ...
- By the university
-
Stockholm University