SDSS IV MaNGA - spatially resolved diagnostic diagrams: a proof that many galaxies are LIERs

Francesco Belfiore; Roberto Maiolino; Claudia Maraston; Eric Emsellem; Matthew A. Bershady; Karen L. Masters; Renbin Yan; Dmitry Bizyaev; Médéric Boquien; Joel R. Brownstein; Kevin Bundy; Niv Drory; Timothy M. Heckman; David R. Law; Alexandre Roman-Lopes; Kaike Pan; Letizia Stanghellini; Daniel Thomas; Anne-Marie Weijmans; Kyle B. Westfall

doi:10.1093/mnras/stw1234

SDSS IV MaNGA - spatially resolved diagnostic diagrams: a proof that many galaxies are LIERs

Francesco Belfiore, Roberto Maiolino, Claudia Maraston, Eric Emsellem, Matthew A. Bershady, Karen L. Masters, Renbin Yan, Dmitry Bizyaev, Médéric Boquien, Joel R. Brownstein, Kevin Bundy, Niv Drory, Timothy M. Heckman, David R. Law, Alexandre Roman-Lopes, Kaike Pan, Letizia Stanghellini, Daniel Thomas, Anne-Marie Weijmans, Kyle B. Westfall

Institute of Cosmology & Gravitation

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Abstract

We study the spatially resolved excitation properties of the ionised gas in a sample of 646 galaxies using integral field spectroscopy data from SDSS-IV MaNGA. Making use of Baldwin-Philips-Terlevich diagnostic diagrams we demonstrate the ubiquitous presence of extended (kpc scale) low ionisation emission-line regions (LIERs) in both star forming and quiescent galaxies. In star forming galaxies LIER emission can be associated with diffuse ionised gas, most evident as extra-planar emission in edge-on systems. In addition, we identify two main classes of galaxies displaying LIER emission: `central LIER' (cLIER) galaxies, where central LIER emission is spatially extended, but accompanied by star formation at larger galactocentric distances, and `extended LIER' (eLIER) galaxies, where LIER emission is extended throughout the whole galaxy. In eLIER and cLIER galaxies, LIER emission is associated with radially flat, low H$\alpha$ equivalent width of line emission ($

Original language	English
Pages (from-to)	3111-3134
Number of pages	26
Journal	Monthly Notices of the Royal Astronomical Society
Volume	461
Issue number	3
Early online date	23 May 2016
DOIs	https://doi.org/10.1093/mnras/stw1234
Publication status	Published - 21 Sep 2016

Keywords

astro-ph.GA
surveys
galaxies: evolution
galaxies: fundamental parameters
galaxies: ISM
RCUK
STFC

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10.1093/mnras/stw1234

SDSS IV MaNGA - spatially resolved diagnostic diagrams
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2016 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
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Belfiore, F., Maiolino, R., Maraston, C., Emsellem, E., Bershady, M. A., Masters, K. L., Yan, R., Bizyaev, D., Boquien, M., Brownstein, J. R., Bundy, K., Drory, N., Heckman, T. M., Law, D. R., Roman-Lopes, A., Pan, K., Stanghellini, L., Thomas, D., Weijmans, A-M., & Westfall, K. B. (2016). SDSS IV MaNGA - spatially resolved diagnostic diagrams: a proof that many galaxies are LIERs. Monthly Notices of the Royal Astronomical Society, 461(3), 3111-3134. https://doi.org/10.1093/mnras/stw1234

@article{2e3887fc1dc0400492daa3d8db5e8dd9,

title = "SDSS IV MaNGA - spatially resolved diagnostic diagrams: a proof that many galaxies are LIERs",

abstract = "We study the spatially resolved excitation properties of the ionised gas in a sample of 646 galaxies using integral field spectroscopy data from SDSS-IV MaNGA. Making use of Baldwin-Philips-Terlevich diagnostic diagrams we demonstrate the ubiquitous presence of extended (kpc scale) low ionisation emission-line regions (LIERs) in both star forming and quiescent galaxies. In star forming galaxies LIER emission can be associated with diffuse ionised gas, most evident as extra-planar emission in edge-on systems. In addition, we identify two main classes of galaxies displaying LIER emission: `central LIER' (cLIER) galaxies, where central LIER emission is spatially extended, but accompanied by star formation at larger galactocentric distances, and `extended LIER' (eLIER) galaxies, where LIER emission is extended throughout the whole galaxy. In eLIER and cLIER galaxies, LIER emission is associated with radially flat, low H$\alpha$ equivalent width of line emission ($",

keywords = "astro-ph.GA, surveys, galaxies: evolution, galaxies: fundamental parameters, galaxies: ISM, RCUK, STFC",

author = "Francesco Belfiore and Roberto Maiolino and Claudia Maraston and Eric Emsellem and Bershady, {Matthew A.} and Masters, {Karen L.} and Renbin Yan and Dmitry Bizyaev and M{\'e}d{\'e}ric Boquien and Brownstein, {Joel R.} and Kevin Bundy and Niv Drory and Heckman, {Timothy M.} and Law, {David R.} and Alexandre Roman-Lopes and Kaike Pan and Letizia Stanghellini and Daniel Thomas and Anne-Marie Weijmans and Westfall, {Kyle B.}",

note = "accepted for publication in MNRAS, 26 pages, 17 figures",

year = "2016",

month = sep,

day = "21",

doi = "10.1093/mnras/stw1234",

language = "English",

volume = "461",

pages = "3111--3134",

journal = "MNRAS",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "3",

}

Belfiore, F, Maiolino, R, Maraston, C, Emsellem, E, Bershady, MA, Masters, KL, Yan, R, Bizyaev, D, Boquien, M, Brownstein, JR, Bundy, K, Drory, N, Heckman, TM, Law, DR, Roman-Lopes, A, Pan, K, Stanghellini, L, Thomas, D, Weijmans, A-M & Westfall, KB 2016, 'SDSS IV MaNGA - spatially resolved diagnostic diagrams: a proof that many galaxies are LIERs', Monthly Notices of the Royal Astronomical Society, vol. 461, no. 3, pp. 3111-3134. https://doi.org/10.1093/mnras/stw1234

TY - JOUR

T1 - SDSS IV MaNGA - spatially resolved diagnostic diagrams

T2 - a proof that many galaxies are LIERs

AU - Belfiore, Francesco

AU - Maiolino, Roberto

AU - Maraston, Claudia

AU - Emsellem, Eric

AU - Bershady, Matthew A.

AU - Masters, Karen L.

AU - Yan, Renbin

AU - Bizyaev, Dmitry

AU - Boquien, Médéric

AU - Brownstein, Joel R.

AU - Bundy, Kevin

AU - Drory, Niv

AU - Heckman, Timothy M.

AU - Law, David R.

AU - Roman-Lopes, Alexandre

AU - Pan, Kaike

AU - Stanghellini, Letizia

AU - Thomas, Daniel

AU - Weijmans, Anne-Marie

AU - Westfall, Kyle B.

N1 - accepted for publication in MNRAS, 26 pages, 17 figures

PY - 2016/9/21

Y1 - 2016/9/21

N2 - We study the spatially resolved excitation properties of the ionised gas in a sample of 646 galaxies using integral field spectroscopy data from SDSS-IV MaNGA. Making use of Baldwin-Philips-Terlevich diagnostic diagrams we demonstrate the ubiquitous presence of extended (kpc scale) low ionisation emission-line regions (LIERs) in both star forming and quiescent galaxies. In star forming galaxies LIER emission can be associated with diffuse ionised gas, most evident as extra-planar emission in edge-on systems. In addition, we identify two main classes of galaxies displaying LIER emission: `central LIER' (cLIER) galaxies, where central LIER emission is spatially extended, but accompanied by star formation at larger galactocentric distances, and `extended LIER' (eLIER) galaxies, where LIER emission is extended throughout the whole galaxy. In eLIER and cLIER galaxies, LIER emission is associated with radially flat, low H$\alpha$ equivalent width of line emission ($

AB - We study the spatially resolved excitation properties of the ionised gas in a sample of 646 galaxies using integral field spectroscopy data from SDSS-IV MaNGA. Making use of Baldwin-Philips-Terlevich diagnostic diagrams we demonstrate the ubiquitous presence of extended (kpc scale) low ionisation emission-line regions (LIERs) in both star forming and quiescent galaxies. In star forming galaxies LIER emission can be associated with diffuse ionised gas, most evident as extra-planar emission in edge-on systems. In addition, we identify two main classes of galaxies displaying LIER emission: `central LIER' (cLIER) galaxies, where central LIER emission is spatially extended, but accompanied by star formation at larger galactocentric distances, and `extended LIER' (eLIER) galaxies, where LIER emission is extended throughout the whole galaxy. In eLIER and cLIER galaxies, LIER emission is associated with radially flat, low H$\alpha$ equivalent width of line emission ($

KW - astro-ph.GA

KW - surveys

KW - galaxies: evolution

KW - galaxies: fundamental parameters

KW - galaxies: ISM

KW - RCUK

KW - STFC

U2 - 10.1093/mnras/stw1234

DO - 10.1093/mnras/stw1234

M3 - Article

VL - 461

SP - 3111

EP - 3134

JO - MNRAS

JF - MNRAS

SN - 0035-8711

IS - 3

ER -

SDSS IV MaNGA - spatially resolved diagnostic diagrams: a proof that many galaxies are LIERs

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Keywords

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