SwePub
Sök i LIBRIS databas

  Extended search

onr:"swepub:oai:DiVA.org:su-229866"
 

Search: onr:"swepub:oai:DiVA.org:su-229866" > Stellar association...

  • 1 of 1
  • Previous record
  • Next record
  •    To hitlist
  • 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

  • 1 of 1
  • Previous record
  • Next record
  •    To hitlist

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Close

Copy and save the link in order to return to this view