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SDSS IV MaNGA - sSFR profiles and the slow quenching of discs in green valley galaxies

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SDSS IV MaNGA - sSFR profiles and the slow quenching of discs in green valley galaxies. / Belfiore, Francesco; Maiolino, Roberto; Bundy, Kevin; Masters, Karen; Bershady, Matthew; Oyarzún, Grecco; Lin, Lihwai; Cano-Diaz, Mariana; Wake, David; Spindler, Ashley; Thomas, Daniel; Brownstein, Joel R.; Drory, Niv; Yan, Renbin.

In: Monthly Notices of the Royal Astronomical Society, Vol. 477, No. 3, 01.07.2018, p. 3014-3029.

Research output: Contribution to journalArticlepeer-review

Harvard

Belfiore, F, Maiolino, R, Bundy, K, Masters, K, Bershady, M, Oyarzún, G, Lin, L, Cano-Diaz, M, Wake, D, Spindler, A, Thomas, D, Brownstein, JR, Drory, N & Yan, R 2018, 'SDSS IV MaNGA - sSFR profiles and the slow quenching of discs in green valley galaxies', Monthly Notices of the Royal Astronomical Society, vol. 477, no. 3, pp. 3014-3029. https://doi.org/10.1093/mnras/sty768

APA

Belfiore, F., Maiolino, R., Bundy, K., Masters, K., Bershady, M., Oyarzún, G., Lin, L., Cano-Diaz, M., Wake, D., Spindler, A., Thomas, D., Brownstein, J. R., Drory, N., & Yan, R. (2018). SDSS IV MaNGA - sSFR profiles and the slow quenching of discs in green valley galaxies. Monthly Notices of the Royal Astronomical Society, 477(3), 3014-3029. https://doi.org/10.1093/mnras/sty768

Vancouver

Belfiore F, Maiolino R, Bundy K, Masters K, Bershady M, Oyarzún G et al. SDSS IV MaNGA - sSFR profiles and the slow quenching of discs in green valley galaxies. Monthly Notices of the Royal Astronomical Society. 2018 Jul 1;477(3):3014-3029. https://doi.org/10.1093/mnras/sty768

Author

Belfiore, Francesco ; Maiolino, Roberto ; Bundy, Kevin ; Masters, Karen ; Bershady, Matthew ; Oyarzún, Grecco ; Lin, Lihwai ; Cano-Diaz, Mariana ; Wake, David ; Spindler, Ashley ; Thomas, Daniel ; Brownstein, Joel R. ; Drory, Niv ; Yan, Renbin. / SDSS IV MaNGA - sSFR profiles and the slow quenching of discs in green valley galaxies. In: Monthly Notices of the Royal Astronomical Society. 2018 ; Vol. 477, No. 3. pp. 3014-3029.

Bibtex

@article{d2ee9471d3fb4605bcfcf0ec4bbbcd21,
title = "SDSS IV MaNGA - sSFR profiles and the slow quenching of discs in green valley galaxies",
abstract = "We study radial profiles in H α equivalent width and specific star formation rate (sSFR) derived from spatially resolved SDSS-IV MaNGA spectroscopy to gain insight on the physical mechanisms that suppress star formation and determine a galaxy{\textquoteright}s location in the SFR-M⋆ diagram. Even within the star-forming {\textquoteleft}main sequence{\textquoteright}, the measured sSFR decreases with stellar mass, in both an integrated and spatially resolved sense. Flat sSFR radial profiles are observed for log(M⋆/M⊙) < 10.5, while star-forming galaxies of higher mass show a significant decrease in sSFR in the central regions, a likely consequence of both larger bulges and an inside-out growth history. Our primary focus is the green valley, constituted by galaxies lying below the star formation main sequence, but not fully passive. In the green valley we find sSFR profiles that are suppressed with respect to star-forming galaxies of the same mass at all galactocentric distances out to 2 effective radii. The responsible quenching mechanism therefore appears to affect the entire galaxy, not simply an expanding central region. The majority of green valley galaxies of log(M⋆/M⊙) > 10.0 are classified spectroscopically as central low-ionization emission-line regions (cLIERs). Despite displaying a higher central stellar mass concentration, the sSFR suppression observed in cLIER galaxies is not simply due to the larger mass of the bulge. Drawing a comparison sample of star-forming galaxies with the same M⋆ and Σ1kpc (the mass surface density within 1 kpc), we show that a high Σ1kpc is not a sufficient condition for determining central quiescence.",
keywords = "astro-ph.GA, RCUK, STFC, galaxies: evolution, galaxies: fundamental parameters, galaxies: ISM",
author = "Francesco Belfiore and Roberto Maiolino and Kevin Bundy and Karen Masters and Matthew Bershady and Grecco Oyarz{\'u}n and Lihwai Lin and Mariana Cano-Diaz and David Wake and Ashley Spindler and Daniel Thomas and Brownstein, {Joel R.} and Niv Drory and Renbin Yan",
note = "12 pages, 9 figures, submitted to MNRAS",
year = "2018",
month = jul,
day = "1",
doi = "10.1093/mnras/sty768",
language = "English",
volume = "477",
pages = "3014--3029",
journal = "MNRAS",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "3",

}

RIS

TY - JOUR

T1 - SDSS IV MaNGA - sSFR profiles and the slow quenching of discs in green valley galaxies

AU - Belfiore, Francesco

AU - Maiolino, Roberto

AU - Bundy, Kevin

AU - Masters, Karen

AU - Bershady, Matthew

AU - Oyarzún, Grecco

AU - Lin, Lihwai

AU - Cano-Diaz, Mariana

AU - Wake, David

AU - Spindler, Ashley

AU - Thomas, Daniel

AU - Brownstein, Joel R.

AU - Drory, Niv

AU - Yan, Renbin

N1 - 12 pages, 9 figures, submitted to MNRAS

PY - 2018/7/1

Y1 - 2018/7/1

N2 - We study radial profiles in H α equivalent width and specific star formation rate (sSFR) derived from spatially resolved SDSS-IV MaNGA spectroscopy to gain insight on the physical mechanisms that suppress star formation and determine a galaxy’s location in the SFR-M⋆ diagram. Even within the star-forming ‘main sequence’, the measured sSFR decreases with stellar mass, in both an integrated and spatially resolved sense. Flat sSFR radial profiles are observed for log(M⋆/M⊙) < 10.5, while star-forming galaxies of higher mass show a significant decrease in sSFR in the central regions, a likely consequence of both larger bulges and an inside-out growth history. Our primary focus is the green valley, constituted by galaxies lying below the star formation main sequence, but not fully passive. In the green valley we find sSFR profiles that are suppressed with respect to star-forming galaxies of the same mass at all galactocentric distances out to 2 effective radii. The responsible quenching mechanism therefore appears to affect the entire galaxy, not simply an expanding central region. The majority of green valley galaxies of log(M⋆/M⊙) > 10.0 are classified spectroscopically as central low-ionization emission-line regions (cLIERs). Despite displaying a higher central stellar mass concentration, the sSFR suppression observed in cLIER galaxies is not simply due to the larger mass of the bulge. Drawing a comparison sample of star-forming galaxies with the same M⋆ and Σ1kpc (the mass surface density within 1 kpc), we show that a high Σ1kpc is not a sufficient condition for determining central quiescence.

AB - We study radial profiles in H α equivalent width and specific star formation rate (sSFR) derived from spatially resolved SDSS-IV MaNGA spectroscopy to gain insight on the physical mechanisms that suppress star formation and determine a galaxy’s location in the SFR-M⋆ diagram. Even within the star-forming ‘main sequence’, the measured sSFR decreases with stellar mass, in both an integrated and spatially resolved sense. Flat sSFR radial profiles are observed for log(M⋆/M⊙) < 10.5, while star-forming galaxies of higher mass show a significant decrease in sSFR in the central regions, a likely consequence of both larger bulges and an inside-out growth history. Our primary focus is the green valley, constituted by galaxies lying below the star formation main sequence, but not fully passive. In the green valley we find sSFR profiles that are suppressed with respect to star-forming galaxies of the same mass at all galactocentric distances out to 2 effective radii. The responsible quenching mechanism therefore appears to affect the entire galaxy, not simply an expanding central region. The majority of green valley galaxies of log(M⋆/M⊙) > 10.0 are classified spectroscopically as central low-ionization emission-line regions (cLIERs). Despite displaying a higher central stellar mass concentration, the sSFR suppression observed in cLIER galaxies is not simply due to the larger mass of the bulge. Drawing a comparison sample of star-forming galaxies with the same M⋆ and Σ1kpc (the mass surface density within 1 kpc), we show that a high Σ1kpc is not a sufficient condition for determining central quiescence.

KW - astro-ph.GA

KW - RCUK

KW - STFC

KW - galaxies: evolution

KW - galaxies: fundamental parameters

KW - galaxies: ISM

U2 - 10.1093/mnras/sty768

DO - 10.1093/mnras/sty768

M3 - Article

VL - 477

SP - 3014

EP - 3029

JO - MNRAS

JF - MNRAS

SN - 0035-8711

IS - 3

ER -

ID: 7983059