2022
DOI: 10.3847/1538-4357/ac6d56
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CLASSY III. The Properties of Starburst-driven Warm Ionized Outflows*

Abstract: 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) fro… Show more

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Cited by 45 publications
(101 citation statements)
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“…The mass loading factors of 𝜂 ≈ 1 − 3 and an escaping wind are quite comparable to those found using UV absorption (Xu et al 2022), and via emission lines such as H𝛼 (McQuinn et al 2019). In the more comparable methodology of Xu et al, the mass flow rate is calculated assuming 𝑟 wind scales with optical size of the starburst.…”
Section: Implications and Comparisonssupporting
confidence: 72%
See 1 more Smart Citation
“…The mass loading factors of 𝜂 ≈ 1 − 3 and an escaping wind are quite comparable to those found using UV absorption (Xu et al 2022), and via emission lines such as H𝛼 (McQuinn et al 2019). In the more comparable methodology of Xu et al, the mass flow rate is calculated assuming 𝑟 wind scales with optical size of the starburst.…”
Section: Implications and Comparisonssupporting
confidence: 72%
“…outflow velocities, massloading factors; 𝜂 ≡ 𝑀 out /SFR) with physical galaxy properties of SFR and stellar mass (e.g. Heckman et al 2015;Chisholm et al 2017;Xu et al 2022).…”
Section: Introductionmentioning
confidence: 99%
“…of the low-ionization gas. Absorption-line fits are presented in CLASSY III (Xu et al 2022). Such detailed absorption-line analysis can then be used to analyze covering fractions, ion column densities, and outflow rates.…”
Section: The Physical Properties Of Outflowsmentioning
confidence: 99%
“…Targets whose spatial or spectral profile had GFWHM < 0 6, with single-peaked profiles, are classified as the CLASSY "compact sources." This classification scheme was further verified by inspecting the half-light radii (r 50 ) measured from the COS acquisition images (Xu et al 2022). All galaxies that were classified as "compact" have r 50 < 0 3, "extended" sources have r 50 > 0 6, and "MC" sources typically have 0 3 < r 50 < 0 6.…”
Section: Data Reductionmentioning
confidence: 89%
“…In both cases we convolve the chosen LSF with a Gaussian profile with a width equal to that measured from the COS acquisition images, thus creating a non-pointsource LSF. Lines were fit using a Gaussian line profile (as detailed in Xu et al 2022) on stellar-continuum-subtracted data (as detailed in J. Chisholm et al and P. Senchyna et al, both in preparation), binned by 15 pixels, using non-point-source LSFs binned by the same amount.…”
Section: Absorption-line Fittingmentioning
confidence: 99%