SDSS-IV MaNGA: Properties of galaxies with kinematically decoupled stellar and gaseous components

Yifei Jin; Yanmei Chen; Yong Shi; C. A. Tremonti; M. A. Bershady; M. Merrifield; E. Emsellem; Hai Fu; D. Wake; K. Bundy; Lihwai Lin; M. Argudo-Fernandez; Song Huang; D. V. Stark; T. Storchi-Bergmann; D. Bizyaev; J. Brownstein; J. Chisholm; Qi Guo; Lei Hao; Jian Hu; Cheng Li; Ran Li; K. L. Masters; E. Malanushenko; Kaike Pan; R. A. Riffel; A. Roman-Lopes; A. Simmons; D. Thomas; Lan Wang; K. Westfall; Renbin Yan

doi:10.1093/mnras/stw2055

SDSS-IV MaNGA: Properties of galaxies with kinematically decoupled stellar and gaseous components

Yifei Jin, Yanmei Chen, Yong Shi, C. A. Tremonti, M. A. Bershady, M. Merrifield, E. Emsellem, Hai Fu, D. Wake, K. Bundy, Lihwai Lin, M. Argudo-Fernandez, Song Huang, D. V. Stark, T. Storchi-Bergmann, D. Bizyaev, J. Brownstein, J. Chisholm, Qi Guo, Lei HaoJian Hu, Cheng Li, Ran Li, K. L. Masters, E. Malanushenko, Kaike Pan, R. A. Riffel, A. Roman-Lopes, A. Simmons, D. Thomas, Lan Wang, K. Westfall, Renbin Yan

Institute of Cosmology & Gravitation

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Abstract

We study the properties of 66 galaxies with kinematically misaligned gas and stars from MaNGA survey. The fraction of kinematically misaligned galaxies varies with galaxy physical parameters, i.e. M*, SFR and sSFR. According to their sSFR, we further classify these 66 galaxies into three categories, 10 star-forming, 26 "Green Valley" and 30 quiescent ones. The properties of different types of kinematically misaligned galaxies are different in that the star-forming ones have positive gradient in D4000 and higher gas-phase metallicity, while the green valley/quiescent ones have negative D4000 gradients and lower gas-phase metallicity on average. There is evidence that all types of the kinematically misaligned galaxies tend to live in more isolated environment. Based on all these observational results, we propose a scenario for the formation of star forming galaxies with kinematically misaligned gas and stars - the progenitor accretes misaligned gas from a gas-rich dwarf or cosmic web, the cancellation of angular momentum from gas-gas collisions between the pre-existing gas and the accreted gas largely accelerates gas inflow, leading to fast centrally-concentrated star-formation. The higher metallicity is due to enrichment from this star formation. For the kinematically misaligned green valley and quiescent galaxies, they might be formed through gas-poor progenitors accreting kinematically misaligned gas from satellites which are smaller in mass.

Original language	English
Pages (from-to)	913-926
Journal	Monthly Notices of the Royal Astronomical Society
Volume	463
Issue number	1
Early online date	17 Aug 2016
DOIs	https://doi.org/10.1093/mnras/stw2055
Publication status	Published - 21 Nov 2016

Keywords

astro-ph.GA

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10.1093/mnras/stw2055

SDSS-IV MaNGA
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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Jin, Y., Chen, Y., Shi, Y., Tremonti, C. A., Bershady, M. A., Merrifield, M., Emsellem, E., Fu, H., Wake, D., Bundy, K., Lin, L., Argudo-Fernandez, M., Huang, S., Stark, D. V., Storchi-Bergmann, T., Bizyaev, D., Brownstein, J., Chisholm, J., Guo, Q., ... Yan, R. (2016). SDSS-IV MaNGA: Properties of galaxies with kinematically decoupled stellar and gaseous components. Monthly Notices of the Royal Astronomical Society, 463(1), 913-926. https://doi.org/10.1093/mnras/stw2055

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title = "SDSS-IV MaNGA: Properties of galaxies with kinematically decoupled stellar and gaseous components",

abstract = "We study the properties of 66 galaxies with kinematically misaligned gas and stars from MaNGA survey. The fraction of kinematically misaligned galaxies varies with galaxy physical parameters, i.e. M*, SFR and sSFR. According to their sSFR, we further classify these 66 galaxies into three categories, 10 star-forming, 26 {"}Green Valley{"} and 30 quiescent ones. The properties of different types of kinematically misaligned galaxies are different in that the star-forming ones have positive gradient in D4000 and higher gas-phase metallicity, while the green valley/quiescent ones have negative D4000 gradients and lower gas-phase metallicity on average. There is evidence that all types of the kinematically misaligned galaxies tend to live in more isolated environment. Based on all these observational results, we propose a scenario for the formation of star forming galaxies with kinematically misaligned gas and stars - the progenitor accretes misaligned gas from a gas-rich dwarf or cosmic web, the cancellation of angular momentum from gas-gas collisions between the pre-existing gas and the accreted gas largely accelerates gas inflow, leading to fast centrally-concentrated star-formation. The higher metallicity is due to enrichment from this star formation. For the kinematically misaligned green valley and quiescent galaxies, they might be formed through gas-poor progenitors accreting kinematically misaligned gas from satellites which are smaller in mass.",

keywords = "astro-ph.GA",

author = "Yifei Jin and Yanmei Chen and Yong Shi and Tremonti, {C. A.} and Bershady, {M. A.} and M. Merrifield and E. Emsellem and Hai Fu and D. Wake and K. Bundy and Lihwai Lin and M. Argudo-Fernandez and Song Huang and Stark, {D. V.} and T. Storchi-Bergmann and D. Bizyaev and J. Brownstein and J. Chisholm and Qi Guo and Lei Hao and Jian Hu and Cheng Li and Ran Li and Masters, {K. L.} and E. Malanushenko and Kaike Pan and Riffel, {R. A.} and A. Roman-Lopes and A. Simmons and D. Thomas and Lan Wang and K. Westfall and Renbin Yan",

note = "19 pages, 11 figures, published in MNRAS",

year = "2016",

month = nov,

day = "21",

doi = "10.1093/mnras/stw2055",

language = "English",

volume = "463",

pages = "913--926",

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

issn = "0035-8711",

publisher = "Oxford University Press",

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Jin, Y, Chen, Y, Shi, Y, Tremonti, CA, Bershady, MA, Merrifield, M, Emsellem, E, Fu, H, Wake, D, Bundy, K, Lin, L, Argudo-Fernandez, M, Huang, S, Stark, DV, Storchi-Bergmann, T, Bizyaev, D, Brownstein, J, Chisholm, J, Guo, Q, Hao, L, Hu, J, Li, C, Li, R, Masters, KL, Malanushenko, E, Pan, K, Riffel, RA, Roman-Lopes, A, Simmons, A, Thomas, D, Wang, L, Westfall, K & Yan, R 2016, 'SDSS-IV MaNGA: Properties of galaxies with kinematically decoupled stellar and gaseous components', Monthly Notices of the Royal Astronomical Society, vol. 463, no. 1, pp. 913-926. https://doi.org/10.1093/mnras/stw2055

TY - JOUR

T1 - SDSS-IV MaNGA

T2 - Properties of galaxies with kinematically decoupled stellar and gaseous components

AU - Jin, Yifei

AU - Chen, Yanmei

AU - Shi, Yong

AU - Tremonti, C. A.

AU - Bershady, M. A.

AU - Merrifield, M.

AU - Emsellem, E.

AU - Fu, Hai

AU - Wake, D.

AU - Bundy, K.

AU - Lin, Lihwai

AU - Argudo-Fernandez, M.

AU - Huang, Song

AU - Stark, D. V.

AU - Storchi-Bergmann, T.

AU - Bizyaev, D.

AU - Brownstein, J.

AU - Chisholm, J.

AU - Guo, Qi

AU - Hao, Lei

AU - Hu, Jian

AU - Li, Cheng

AU - Li, Ran

AU - Masters, K. L.

AU - Malanushenko, E.

AU - Pan, Kaike

AU - Riffel, R. A.

AU - Roman-Lopes, A.

AU - Simmons, A.

AU - Thomas, D.

AU - Wang, Lan

AU - Westfall, K.

AU - Yan, Renbin

N1 - 19 pages, 11 figures, published in MNRAS

PY - 2016/11/21

Y1 - 2016/11/21

N2 - We study the properties of 66 galaxies with kinematically misaligned gas and stars from MaNGA survey. The fraction of kinematically misaligned galaxies varies with galaxy physical parameters, i.e. M*, SFR and sSFR. According to their sSFR, we further classify these 66 galaxies into three categories, 10 star-forming, 26 "Green Valley" and 30 quiescent ones. The properties of different types of kinematically misaligned galaxies are different in that the star-forming ones have positive gradient in D4000 and higher gas-phase metallicity, while the green valley/quiescent ones have negative D4000 gradients and lower gas-phase metallicity on average. There is evidence that all types of the kinematically misaligned galaxies tend to live in more isolated environment. Based on all these observational results, we propose a scenario for the formation of star forming galaxies with kinematically misaligned gas and stars - the progenitor accretes misaligned gas from a gas-rich dwarf or cosmic web, the cancellation of angular momentum from gas-gas collisions between the pre-existing gas and the accreted gas largely accelerates gas inflow, leading to fast centrally-concentrated star-formation. The higher metallicity is due to enrichment from this star formation. For the kinematically misaligned green valley and quiescent galaxies, they might be formed through gas-poor progenitors accreting kinematically misaligned gas from satellites which are smaller in mass.

AB - We study the properties of 66 galaxies with kinematically misaligned gas and stars from MaNGA survey. The fraction of kinematically misaligned galaxies varies with galaxy physical parameters, i.e. M*, SFR and sSFR. According to their sSFR, we further classify these 66 galaxies into three categories, 10 star-forming, 26 "Green Valley" and 30 quiescent ones. The properties of different types of kinematically misaligned galaxies are different in that the star-forming ones have positive gradient in D4000 and higher gas-phase metallicity, while the green valley/quiescent ones have negative D4000 gradients and lower gas-phase metallicity on average. There is evidence that all types of the kinematically misaligned galaxies tend to live in more isolated environment. Based on all these observational results, we propose a scenario for the formation of star forming galaxies with kinematically misaligned gas and stars - the progenitor accretes misaligned gas from a gas-rich dwarf or cosmic web, the cancellation of angular momentum from gas-gas collisions between the pre-existing gas and the accreted gas largely accelerates gas inflow, leading to fast centrally-concentrated star-formation. The higher metallicity is due to enrichment from this star formation. For the kinematically misaligned green valley and quiescent galaxies, they might be formed through gas-poor progenitors accreting kinematically misaligned gas from satellites which are smaller in mass.

KW - astro-ph.GA

U2 - 10.1093/mnras/stw2055

DO - 10.1093/mnras/stw2055

M3 - Article

SN - 0035-8711

VL - 463

SP - 913

EP - 926

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

SDSS-IV MaNGA: Properties of galaxies with kinematically decoupled stellar and gaseous components

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