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SDSS-IV MaNGA-resolved star formation and molecular gas properties of green valley galaxies: a first look with ALMA and MaNGA

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SDSS-IV MaNGA-resolved star formation and molecular gas properties of green valley galaxies: a first look with ALMA and MaNGA. / Lin, Lihwai; Belfiore, Francesco; Pan, Hsi-An; Bothwell, M. S.; Hsieh, Pei-Ying; Huang, Shan; Xiao, Ting; Sánchez, Sebastián F.; Hsieh, Bau-Ching; Masters, Karen; Ramya, S.; Lin, Jing-Hua; Hsu, Chin-Hao; Li, Cheng; Maiolino, Roberto; Bundy, Kevin; Bizyaev, Dmitry; Drory, Niv; Ibarra-Medel, Héctor; Lacerna, Ivan; Haines, Tim; Smethurst, Rebecca; Stark, David V.; Thomas, Daniel.

In: The Astrophysical Journal, Vol. 851, No. 1, 18, 06.12.2017.

Research output: Contribution to journalArticle

Harvard

Lin, L, Belfiore, F, Pan, H-A, Bothwell, MS, Hsieh, P-Y, Huang, S, Xiao, T, Sánchez, SF, Hsieh, B-C, Masters, K, Ramya, S, Lin, J-H, Hsu, C-H, Li, C, Maiolino, R, Bundy, K, Bizyaev, D, Drory, N, Ibarra-Medel, H, Lacerna, I, Haines, T, Smethurst, R, Stark, DV & Thomas, D 2017, 'SDSS-IV MaNGA-resolved star formation and molecular gas properties of green valley galaxies: a first look with ALMA and MaNGA', The Astrophysical Journal, vol. 851, no. 1, 18. https://doi.org/10.3847/1538-4357/aa96ae

APA

Lin, L., Belfiore, F., Pan, H-A., Bothwell, M. S., Hsieh, P-Y., Huang, S., Xiao, T., Sánchez, S. F., Hsieh, B-C., Masters, K., Ramya, S., Lin, J-H., Hsu, C-H., Li, C., Maiolino, R., Bundy, K., Bizyaev, D., Drory, N., Ibarra-Medel, H., ... Thomas, D. (2017). SDSS-IV MaNGA-resolved star formation and molecular gas properties of green valley galaxies: a first look with ALMA and MaNGA. The Astrophysical Journal, 851(1), [18]. https://doi.org/10.3847/1538-4357/aa96ae

Vancouver

Lin L, Belfiore F, Pan H-A, Bothwell MS, Hsieh P-Y, Huang S et al. SDSS-IV MaNGA-resolved star formation and molecular gas properties of green valley galaxies: a first look with ALMA and MaNGA. The Astrophysical Journal. 2017 Dec 6;851(1). 18. https://doi.org/10.3847/1538-4357/aa96ae

Author

Lin, Lihwai ; Belfiore, Francesco ; Pan, Hsi-An ; Bothwell, M. S. ; Hsieh, Pei-Ying ; Huang, Shan ; Xiao, Ting ; Sánchez, Sebastián F. ; Hsieh, Bau-Ching ; Masters, Karen ; Ramya, S. ; Lin, Jing-Hua ; Hsu, Chin-Hao ; Li, Cheng ; Maiolino, Roberto ; Bundy, Kevin ; Bizyaev, Dmitry ; Drory, Niv ; Ibarra-Medel, Héctor ; Lacerna, Ivan ; Haines, Tim ; Smethurst, Rebecca ; Stark, David V. ; Thomas, Daniel. / SDSS-IV MaNGA-resolved star formation and molecular gas properties of green valley galaxies: a first look with ALMA and MaNGA. In: The Astrophysical Journal. 2017 ; Vol. 851, No. 1.

Bibtex

@article{3b9535483d6740048173eb143b8ba448,
title = "SDSS-IV MaNGA-resolved star formation and molecular gas properties of green valley galaxies: a first look with ALMA and MaNGA",
abstract = "We study the role of cold gas in quenching star formation in the green valley by analyzing ALMA 12CO (1–0) observations of three galaxies with resolved optical spectroscopy from the MaNGA survey. We present resolution-matched maps of the star formation rate and molecular gas mass. These data are used to calculate the star formation efficiency (SFE) and gas fraction ƒgas for these galaxies separately in the central {"}bulge{"} regions and outer disks. We find that, for the two galaxies whose global specific star formation rate (sSFR) deviates most from the star formation main sequence, the gas fraction in the bulges is significantly lower than that in their disks, supporting an {"}inside-out{"} model of galaxy quenching. For the two galaxies where SFE can be reliably determined in the central regions, the bulges and disks share similar SFEs. This suggests that a decline in ƒgas is the main driver of lowered sSFR in bulges compared to disks in green valley galaxies. Within the disks, there exist common correlations between the sSFR and SFE and between sSFR and ƒgas on kiloparsec scales—the local SFE or ƒgas in the disks declines with local sSFR. Our results support a picture in which the sSFR in bulges is primarily controlled by ƒgas, whereas both SFE and ƒgas play a role in lowering the sSFR in disks. A larger sample is required to confirm if the trend established in this work is representative of the green valley as a whole.",
keywords = "RCUK, STFC, galaxies: evolution",
author = "Lihwai Lin and Francesco Belfiore and Hsi-An Pan and Bothwell, {M. S.} and Pei-Ying Hsieh and Shan Huang and Ting Xiao and S{\'a}nchez, {Sebasti{\'a}n F.} and Bau-Ching Hsieh and Karen Masters and S. Ramya and Jing-Hua Lin and Chin-Hao Hsu and Cheng Li and Roberto Maiolino and Kevin Bundy and Dmitry Bizyaev and Niv Drory and H{\'e}ctor Ibarra-Medel and Ivan Lacerna and Tim Haines and Rebecca Smethurst and Stark, {David V.} and Daniel Thomas",
year = "2017",
month = dec,
day = "6",
doi = "10.3847/1538-4357/aa96ae",
language = "English",
volume = "851",
journal = "The Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing",
number = "1",

}

RIS

TY - JOUR

T1 - SDSS-IV MaNGA-resolved star formation and molecular gas properties of green valley galaxies: a first look with ALMA and MaNGA

AU - Lin, Lihwai

AU - Belfiore, Francesco

AU - Pan, Hsi-An

AU - Bothwell, M. S.

AU - Hsieh, Pei-Ying

AU - Huang, Shan

AU - Xiao, Ting

AU - Sánchez, Sebastián F.

AU - Hsieh, Bau-Ching

AU - Masters, Karen

AU - Ramya, S.

AU - Lin, Jing-Hua

AU - Hsu, Chin-Hao

AU - Li, Cheng

AU - Maiolino, Roberto

AU - Bundy, Kevin

AU - Bizyaev, Dmitry

AU - Drory, Niv

AU - Ibarra-Medel, Héctor

AU - Lacerna, Ivan

AU - Haines, Tim

AU - Smethurst, Rebecca

AU - Stark, David V.

AU - Thomas, Daniel

PY - 2017/12/6

Y1 - 2017/12/6

N2 - We study the role of cold gas in quenching star formation in the green valley by analyzing ALMA 12CO (1–0) observations of three galaxies with resolved optical spectroscopy from the MaNGA survey. We present resolution-matched maps of the star formation rate and molecular gas mass. These data are used to calculate the star formation efficiency (SFE) and gas fraction ƒgas for these galaxies separately in the central "bulge" regions and outer disks. We find that, for the two galaxies whose global specific star formation rate (sSFR) deviates most from the star formation main sequence, the gas fraction in the bulges is significantly lower than that in their disks, supporting an "inside-out" model of galaxy quenching. For the two galaxies where SFE can be reliably determined in the central regions, the bulges and disks share similar SFEs. This suggests that a decline in ƒgas is the main driver of lowered sSFR in bulges compared to disks in green valley galaxies. Within the disks, there exist common correlations between the sSFR and SFE and between sSFR and ƒgas on kiloparsec scales—the local SFE or ƒgas in the disks declines with local sSFR. Our results support a picture in which the sSFR in bulges is primarily controlled by ƒgas, whereas both SFE and ƒgas play a role in lowering the sSFR in disks. A larger sample is required to confirm if the trend established in this work is representative of the green valley as a whole.

AB - We study the role of cold gas in quenching star formation in the green valley by analyzing ALMA 12CO (1–0) observations of three galaxies with resolved optical spectroscopy from the MaNGA survey. We present resolution-matched maps of the star formation rate and molecular gas mass. These data are used to calculate the star formation efficiency (SFE) and gas fraction ƒgas for these galaxies separately in the central "bulge" regions and outer disks. We find that, for the two galaxies whose global specific star formation rate (sSFR) deviates most from the star formation main sequence, the gas fraction in the bulges is significantly lower than that in their disks, supporting an "inside-out" model of galaxy quenching. For the two galaxies where SFE can be reliably determined in the central regions, the bulges and disks share similar SFEs. This suggests that a decline in ƒgas is the main driver of lowered sSFR in bulges compared to disks in green valley galaxies. Within the disks, there exist common correlations between the sSFR and SFE and between sSFR and ƒgas on kiloparsec scales—the local SFE or ƒgas in the disks declines with local sSFR. Our results support a picture in which the sSFR in bulges is primarily controlled by ƒgas, whereas both SFE and ƒgas play a role in lowering the sSFR in disks. A larger sample is required to confirm if the trend established in this work is representative of the green valley as a whole.

KW - RCUK

KW - STFC

KW - galaxies: evolution

U2 - 10.3847/1538-4357/aa96ae

DO - 10.3847/1538-4357/aa96ae

M3 - Article

VL - 851

JO - The Astrophysical Journal

JF - The Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 18

ER -

ID: 8322124