Search: onr:"swepub:oai:DiVA.org:su-229866" >
Stellar association...
-
Scheuermann, Fabian
(author)
Stellar associations powering H ii regions - I. Defining an evolutionary sequence
- Article/chapterEnglish2023
Publisher, publication year, extent ...
-
2023-03-22
-
Oxford University Press (OUP),2023
-
printrdacarrier
Numbers
-
LIBRIS-ID:oai:DiVA.org:su-229866
-
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-229866URI
-
https://doi.org/10.1093/mnras/stad878DOI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:ref swepub-contenttype
-
Subject category:art swepub-publicationtype
Notes
-
Connecting the gas in H II regions to the underlying source of the ionizing radiation can help us constrain the physical processes of stellar feedback and how H II regions evolve over time. With PHANGS-MUSE, we detect nearly 24 000 H II regions across 19 galaxies and measure the physical properties of the ionized gas (e.g. metallicity, ionization parameter, and density). We use catalogues of multiscale stellar associations from PHANGS-HST to obtain constraints on the age of the ionizing sources. We construct a matched catalogue of 4177 H II regions that are clearly linked to a single ionizing association. A weak anticorrelation is observed between the association ages and the H a equi v alent width EW (H a), the H a/ FUV flux ratio, and the ionization parameter, log q . As all three are expected to decrease as the stellar population ages, this could indicate that we observe an evolutionary sequence. This interpretation is further supported by correlations between all three properties. Interpreting these as evolutionary tracers, we find younger nebulae to be more attenuated by dust and closer to giant molecular clouds, in line with recent models of feedback-regulated star formation. We also observe strong correlations with the local metallicity variations and all three proposed age tracers, suggestive of star formation preferentially occurring in locations of locally enhanced metallicity. Overall, EW (H a) and log q show the most consistent trends and appear to be most reliable tracers for the age of an H II region.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Kreckel, Kathryn
(author)
-
Barnes, Ashley T.
(author)
-
Belfiore, Francesco
(author)
-
Groves, Brent
(author)
-
Hannon, Stephen
(author)
-
Lee, Janice C.
(author)
-
Minsley, Rebecca
(author)
-
Rosolowsky, Erik
(author)
-
Bigiel, Frank
(author)
-
Blanc, Guillermo A.
(author)
-
Boquien, Mederic
(author)
-
Dale, Daniel A.
(author)
-
Deger, Sinan,1985-Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)side0330
(author)
-
Egorov, Oleg
(author)
-
Emsellem, Eric
(author)
-
Glover, Simon C. O.
(author)
-
Grasha, Kathryn
(author)
-
Hassani, Hamid
(author)
-
Jeffreson, Sarah M. R.
(author)
-
Klessen, Ralf S.
(author)
-
Kruijssen, J. M. Diederik
(author)
-
Larson, Kirsten L.
(author)
-
Leroy, Adam K.
(author)
-
Lopez, Laura A.
(author)
-
Pan, Hsi-An
(author)
-
Sanchez-Blazquez, Patricia
(author)
-
Santoro, Francesco
(author)
-
Schinnerer, Eva
(author)
-
Thilker, David A.
(author)
-
Whitmore, Bradley C.
(author)
-
Watkins, Elizabeth J.
(author)
-
Williams, Thomas G.
(author)
-
Stockholms universitetFysikum
(creator_code:org_t)
Related titles
-
In:Monthly notices of the Royal Astronomical Society: Oxford University Press (OUP)522:2, s. 2369-23830035-87111365-2966
Internet link
Find in a library
To the university's database
- By the author/editor
-
Scheuermann, Fab ...
-
Kreckel, Kathryn
-
Barnes, Ashley T ...
-
Belfiore, France ...
-
Groves, Brent
-
Hannon, Stephen
-
show more...
-
Lee, Janice C.
-
Minsley, Rebecca
-
Rosolowsky, Erik
-
Bigiel, Frank
-
Blanc, Guillermo ...
-
Boquien, Mederic
-
Dale, Daniel A.
-
Deger, Sinan, 19 ...
-
Egorov, Oleg
-
Emsellem, Eric
-
Glover, Simon C. ...
-
Grasha, Kathryn
-
Hassani, Hamid
-
Jeffreson, Sarah ...
-
Klessen, Ralf S.
-
Kruijssen, J. M. ...
-
Larson, Kirsten ...
-
Leroy, Adam K.
-
Lopez, Laura A.
-
Pan, Hsi-An
-
Sanchez-Blazquez ...
-
Santoro, Frances ...
-
Schinnerer, Eva
-
Thilker, David A ...
-
Whitmore, Bradle ...
-
Watkins, Elizabe ...
-
Williams, Thomas ...
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Astronomy Astrop ...
- Articles in the publication
-
Monthly notices ...
- By the university
-
Stockholm University