NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-18 T10:19:34 PDT
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For refcode 2019MNRAS.482.4032L:
Retrieve 17 NED objects in this reference.
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NED Abstract

Copyright by Royal Astronomical Society. 2019MNRAS.482.4032L Systematic study of outflows in the Local Universe using CALIFA: I. Sample selection and main properties Lopez-Coba, Carlos; Sanchez, Sebastian F.; Bland-Hawthorn, Joss; Moiseev, Alexei V.; Cruz-Gonzalez, Irene; Garcia-Benito, Ruben; Barrera-Ballesteros, Jorge K.; Galbany, Lluis Abstract. We present a sample of 17 objects from the CALIFA survey where we find initial evidence of galactic winds based on their off-axis ionization properties. We identify the presence of outflows using various optical diagnostic diagrams [e.g. EW(H {alpha}), [N II]/H {alpha}, [S II]/H {alpha}, [O I]/H {alpha} line-ratio maps]. We find that all 17 candidate outflow galaxies lie along the sequence of active star formation in the M_*_ versus star-formation rate (SFR) diagram, without a clear excess in the integrated SFR. The location of galaxies along the star-formation main sequence does not influence strongly the presence or not of outflows. The analysis of the SFR density (Sigma_SFR_) reveals that the CALIFA sources present higher values when compared with normal star-forming galaxies. The strength of this relation depends on the calibrator used to estimate the SFR. This excess in Sigma_SFR_ is significant within the first effective radius supporting the idea that most outflows are driven by processes in the inner regions of a galaxy. We find that the molecular gas mass density (Sigma_gas_) is a key parameter that plays an important role in the generation of outflows through its association with the local SFR. The canonical threshold reported for the generation of outflows - Sigma_SFR_ > 0.1 M_&sun; yr^{-1} kpc^{-2} - is only marginally exceeded in our sample. Within the Kennicutt-Schmidt diagram we propose a domain for galaxies hosting starburst-driven outflows defined by Sigma_SFR> 10^{-2} M_&sun; yr^{-1} kpc^{-2} and Sigma_gas>10^{1.2} M_&sun; pc^{-2} within a central kiloparsec region. Key words: ISM: jets and outflows, galaxies: ISM, galaxies: star formation, galaxies: structure
Retrieve 17 NED objects in this reference.
Please click here for ADS abstract

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