Search: onr:"swepub:oai:DiVA.org:su-208361" >
CLASSY III. The Pro...
CLASSY III. The Properties of Starburst-driven Warm Ionized Outflows
-
Xu, Xinfeng (author)
-
Heckman, Timothy (author)
-
Henry, Alaina (author)
-
show more...
-
Berg, Danielle A. (author)
-
Chisholm, John (author)
-
James, Bethan L. (author)
-
Martin, Crystal L. (author)
-
Stark, Daniel P. (author)
-
Aloisi, Alessandra (author)
-
Amorín, Ricardo O. (author)
-
Arellano-Córdova, Karla Z. (author)
-
Bordoloi, Rongmon (author)
-
Charlot, Stéphane (author)
-
Chen, Zuyi (author)
-
- Hayes, Matthew J. (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
-
Mingozzi, Matilde (author)
-
Sugahara, Yuma (author)
-
Kewley, Lisa J. (author)
-
Ouchi, Masami (author)
-
Scarlata, Claudia (author)
-
Steidel, Charles C. (author)
-
show less...
-
(creator_code:org_t)
- 2022-07-15
- 2022
- English.
-
In: Astrophysical Journal. - : American Astronomical Society. - 0004-637X .- 1538-4357. ; 933:2
- Related links:
-
https://doi.org/10.3...
-
show more...
-
https://urn.kb.se/re...
-
https://doi.org/10.3...
-
show less...
Abstract
Subject headings
Close
- We report the results of analyses of galactic outflows in a sample of 45 low-redshift starburst galaxies in the COS Legacy Archive Spectroscopic SurveY (CLASSY), augmented by five additional similar starbursts with Cosmic Origins Spectrograph (COS) data. The outflows are traced by blueshifted absorption lines of metals spanning a wide range of ionization potential. The high quality and broad spectral coverage of CLASSY data enable us to disentangle the absorption due to the static interstellar medium (ISM) from that due to outflows. We further use different line multiplets and doublets to determine the covering fraction, column density, and ionization state as a function of velocity for each outflow. We measure the outflow's mean velocity and velocity width, and find that both correlate in a highly significant way with the star formation rate, galaxy mass, and circular velocity over ranges of four orders of magnitude for the first two properties. We also estimate outflow rates of metals, mass, momentum, and kinetic energy. We find that, at most, only about 20% of silicon created and ejected by supernovae in the starburst is carried out in the warm phase we observe. The outflows' mass-loading factor increases steeply and inversely with both circular and outflow velocity (log–log slope ∼−1.6), and reaches ∼10 for dwarf galaxies. We find that the outflows typically carry about 10%–100% of the momentum injected by massive stars and about 1%–20% of the kinetic energy. We show that these results place interesting constraints on, and new insights into, models and simulations of galactic winds.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Galaxy evolution
- Galaxy kinematics
- Galaxy dynamics
- Starburst galaxies
- Ultraviolet astronomy
- Galaxy spectroscopy
- Galactic winds
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
-
Xu, Xinfeng
-
Heckman, Timothy
-
Henry, Alaina
-
Berg, Danielle A ...
-
Chisholm, John
-
James, Bethan L.
-
show more...
-
Martin, Crystal ...
-
Stark, Daniel P.
-
Aloisi, Alessand ...
-
Amorín, Ricardo ...
-
Arellano-Córdova ...
-
Bordoloi, Rongmo ...
-
Charlot, Stéphan ...
-
Chen, Zuyi
-
Hayes, Matthew J ...
-
Mingozzi, Matild ...
-
Sugahara, Yuma
-
Kewley, Lisa J.
-
Ouchi, Masami
-
Scarlata, Claudi ...
-
Steidel, Charles ...
-
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