onr:"swepub:oai:DiVA.org:su-212435"
Search: onr:"swepub:oai:DiVA.org:su-212435" > On the Triggering o...
- 1 of 1
- Previous record
- Next record
- To hitlist
On the Triggering of Extreme Starburst Events in Low-metallicity Galaxies : A Deep Search for Companions of Green Peas
- Laufman, Lauren (author)
- Scarlata, Claudia (author)
-
- Hayes, Matthew J. (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
- show more...
- Skillman, Evan (author)
- show less...
- (creator_code:org_t)
- 2022-11-17
- 2022
- English.
- In: Astrophysical Journal. - : American Astronomical Society. - 0004-637X .- 1538-4357. ; 940:1
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- Green pea galaxies are starbursting, low-mass galaxies that are good analogues to star-forming galaxies in the early universe. We perform a survey of 23 green peas using the Multi Unit Spectroscopic Explorer (MUSE) Integral Field Unit spectrograph on the Very Large Telescope to search for companion galaxies. The survey reaches an average point-source depth of ∼10−18 erg cm−2 s−1 for emission lines. The MUSE field of view allows us to probe a 1 × 1 arcmin2 field around these galaxies and to search their surroundings for faint companions that could have interacted with them and induced their starburst episodes. We search for companions using a variety of methods including template matching to emission- and absorption-line spectra. When restricting the search to the same physical area (R = 78 kpc) for all galaxies, we find that the fraction of green pea galaxies with companions is 0.11+0.07-0.05 . We define a control sample of star-forming galaxies with the same stellar masses and redshifts as the green peas, but consistent with the star formation main sequence. We find that green pea galaxies are as likely to have companions as the control sample; for which the fraction of objects with companions is 0.08+0.05-0.03 . Given that we do not find statistical evidence for an elevated companion fraction in the green peas in this study, we argue that the "companions" are likely unrelated to the bursts in these galaxies.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Dwarf galaxies
- Galaxy interactions
- Starburst galaxies
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
- Astrophysical Journal (Search for host publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Laufman, Lauren
- Scarlata, Claudi ...
- Hayes, Matthew J ...
- Skillman, Evan
- About the subject
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Physical Science ...
- and Astronomy Astrop ...
- Articles in the publication
- Astrophysical Jo ...
- By the university
- Stockholm University
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
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.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
