Galaxy Zoo: the dependence of the star formation-stellar mass relation on spiral disk morphology

Kyle W. Willett; Kevin Schawinski; Brooke D. Simmons; Karen L. Masters; Ramin A. Skibba; Sugata Kaviraj; Thomas Melvin; O. Ivy Wong; Robert C. Nichol; Edmond Cheung; Chris J. Lintott; Lucy Fortson

doi:10.1093/mnras/stv307

Galaxy Zoo: the dependence of the star formation-stellar mass relation on spiral disk morphology

Kyle W. Willett, Kevin Schawinski, Brooke D. Simmons, Karen L. Masters, Ramin A. Skibba, Sugata Kaviraj, Thomas Melvin, O. Ivy Wong, Robert C. Nichol, Edmond Cheung, Chris J. Lintott, Lucy Fortson

Centre for Astrophysics Research (CAR)

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Abstract

We measure the stellar mass-star formation rate relation in star-forming disk galaxies at z1. Of the galaxies lying significantly above the M-SFR relation in the local Universe, more than 50% are mergers. We interpret this as evidence that the spiral arms, which are imperfect reflections of the galaxy's current gravitational potential, are either fully independent of the various quenching mechanisms or are completely overwhelmed by the combination of outflows and feedback. The arrangement of the star formation can be changed, but the system as a whole regulates itself even in the presence of strong dynamical forcing.

Original language	English
Journal	Monthly Notices of the Royal Astronomical Society
DOIs	https://doi.org/10.1093/mnras/stv307
Publication status	Published - 19 Mar 2015

Keywords

astro-ph.GA

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10.1093/mnras/stv307

stv307
© 2015 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.
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title = "Galaxy Zoo: the dependence of the star formation-stellar mass relation on spiral disk morphology",

abstract = "We measure the stellar mass-star formation rate relation in star-forming disk galaxies at z1. Of the galaxies lying significantly above the M-SFR relation in the local Universe, more than 50% are mergers. We interpret this as evidence that the spiral arms, which are imperfect reflections of the galaxy's current gravitational potential, are either fully independent of the various quenching mechanisms or are completely overwhelmed by the combination of outflows and feedback. The arrangement of the star formation can be changed, but the system as a whole regulates itself even in the presence of strong dynamical forcing. ",

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author = "Willett, {Kyle W.} and Kevin Schawinski and Simmons, {Brooke D.} and Masters, {Karen L.} and Skibba, {Ramin A.} and Sugata Kaviraj and Thomas Melvin and Wong, {O. Ivy} and Nichol, {Robert C.} and Edmond Cheung and Lintott, {Chris J.} and Lucy Fortson",

note = "{\textcopyright} 2015 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. Code and data are available at https://github.com/willettk/gzmainsequence",

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month = mar,

day = "19",

doi = "10.1093/mnras/stv307",

language = "English",

journal = "Monthly Notices of the Royal Astronomical Society",

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T1 - Galaxy Zoo

T2 - the dependence of the star formation-stellar mass relation on spiral disk morphology

AU - Willett, Kyle W.

AU - Schawinski, Kevin

AU - Simmons, Brooke D.

AU - Masters, Karen L.

AU - Skibba, Ramin A.

AU - Kaviraj, Sugata

AU - Melvin, Thomas

AU - Wong, O. Ivy

AU - Nichol, Robert C.

AU - Cheung, Edmond

AU - Lintott, Chris J.

AU - Fortson, Lucy

PY - 2015/3/19

Y1 - 2015/3/19

N2 - We measure the stellar mass-star formation rate relation in star-forming disk galaxies at z1. Of the galaxies lying significantly above the M-SFR relation in the local Universe, more than 50% are mergers. We interpret this as evidence that the spiral arms, which are imperfect reflections of the galaxy's current gravitational potential, are either fully independent of the various quenching mechanisms or are completely overwhelmed by the combination of outflows and feedback. The arrangement of the star formation can be changed, but the system as a whole regulates itself even in the presence of strong dynamical forcing.

AB - We measure the stellar mass-star formation rate relation in star-forming disk galaxies at z1. Of the galaxies lying significantly above the M-SFR relation in the local Universe, more than 50% are mergers. We interpret this as evidence that the spiral arms, which are imperfect reflections of the galaxy's current gravitational potential, are either fully independent of the various quenching mechanisms or are completely overwhelmed by the combination of outflows and feedback. The arrangement of the star formation can be changed, but the system as a whole regulates itself even in the presence of strong dynamical forcing.

KW - astro-ph.GA

U2 - 10.1093/mnras/stv307

DO - 10.1093/mnras/stv307

M3 - Article

SN - 0035-8711

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

ER -

Galaxy Zoo: the dependence of the star formation-stellar mass relation on spiral disk morphology

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