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
SN - 0035-8711
VL - 461
SP - 3111
EP - 3134
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 3
ER -