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SDSS-IV MaNGA: environmental dependence of the Mgb/⟨Fe⟩-σ* relation for nearby galaxies

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SDSS-IV MaNGA: environmental dependence of the Mgb/⟨Fe⟩-σ* relation for nearby galaxies. / Zheng, Zheng; Li, Cheng; Mao, Shude; Wang, Huiyuan; Liu, Chao; Mo, Houjun; Yuan, Zhen; Maraston, Claudia; Thomas, Daniel; Yan, Renbin; Bundy, Kevin; Long, R. J.; Parikh, Taniya; Oyarzún, Grecco; Bizyaev, Dmitry; Lacerna, Ivan.

In: Astrophysical Journal, Vol. 873, No. 1, 63, 05.03.2019.

Research output: Contribution to journalArticlepeer-review

Harvard

Zheng, Z, Li, C, Mao, S, Wang, H, Liu, C, Mo, H, Yuan, Z, Maraston, C, Thomas, D, Yan, R, Bundy, K, Long, RJ, Parikh, T, Oyarzún, G, Bizyaev, D & Lacerna, I 2019, 'SDSS-IV MaNGA: environmental dependence of the Mgb/⟨Fe⟩-σ* relation for nearby galaxies', Astrophysical Journal, vol. 873, no. 1, 63. https://doi.org/10.3847/1538-4357/ab03d2

APA

Zheng, Z., Li, C., Mao, S., Wang, H., Liu, C., Mo, H., Yuan, Z., Maraston, C., Thomas, D., Yan, R., Bundy, K., Long, R. J., Parikh, T., Oyarzún, G., Bizyaev, D., & Lacerna, I. (2019). SDSS-IV MaNGA: environmental dependence of the Mgb/⟨Fe⟩-σ* relation for nearby galaxies. Astrophysical Journal, 873(1), [63]. https://doi.org/10.3847/1538-4357/ab03d2

Vancouver

Zheng Z, Li C, Mao S, Wang H, Liu C, Mo H et al. SDSS-IV MaNGA: environmental dependence of the Mgb/⟨Fe⟩-σ* relation for nearby galaxies. Astrophysical Journal. 2019 Mar 5;873(1). 63. https://doi.org/10.3847/1538-4357/ab03d2

Author

Zheng, Zheng ; Li, Cheng ; Mao, Shude ; Wang, Huiyuan ; Liu, Chao ; Mo, Houjun ; Yuan, Zhen ; Maraston, Claudia ; Thomas, Daniel ; Yan, Renbin ; Bundy, Kevin ; Long, R. J. ; Parikh, Taniya ; Oyarzún, Grecco ; Bizyaev, Dmitry ; Lacerna, Ivan. / SDSS-IV MaNGA: environmental dependence of the Mgb/⟨Fe⟩-σ* relation for nearby galaxies. In: Astrophysical Journal. 2019 ; Vol. 873, No. 1.

Bibtex

@article{d8b933ac564542349fd982b403f5b85c,
title = "SDSS-IV MaNGA: environmental dependence of the Mgb/⟨Fe⟩-σ* relation for nearby galaxies",
abstract = "We use a sample of ~3000 galaxies from the MaNGA MPL-7 internal data release to study the α abundance distribution within low-redshift galaxies. We use the Lick index ratio Mgb/⟨Fe⟩ as an αabundance indicator to study relationships between the α abundance distribution and galaxy properties such as effective stellar velocity dispersion within 0.3 effective radii (σ*), galaxy environment, and dark matter halo formation time (zf ). We find that (1) all galaxies show a tight correlation between Mgb/⟨Fe⟩ and σ*;(2) {"}old{"} (Hβ < 3) low-σ* galaxies in high local density environment and inner regions within galaxy groups are enhanced in Mgb/⟨Fe⟩, while {"}young{"} (Hβ > 3) galaxies and high-mass galaxies show no or less environmental dependence; (3) {"}old{"} galaxies with high-zf  show enhanced Mgb⟨Fe⟩/ over low- and medium-zf ; and (4) Mgb/⟨Fe⟩ gradients are close to zero and show dependence on σ* but no obvious dependence on the environment or zf . Our study indicates that stellar velocity dispersion or galaxy mass is the main parameter driving the Mgb/⟨Fe⟩ enhancement, although environments appear to have modest effects, particularly for low- and medium-mass galaxies.",
keywords = "galaxies: abundances, galaxies: evolution, galaxies: general, galaxies: statistics, galaxies: stellar content, galaxies: structure, RCUK, STFC, ST/N000668/1",
author = "Zheng Zheng and Cheng Li and Shude Mao and Huiyuan Wang and Chao Liu and Houjun Mo and Zhen Yuan and Claudia Maraston and Daniel Thomas and Renbin Yan and Kevin Bundy and Long, {R. J.} and Taniya Parikh and Grecco Oyarz{\'u}n and Dmitry Bizyaev and Ivan Lacerna",
year = "2019",
month = mar,
day = "5",
doi = "10.3847/1538-4357/ab03d2",
language = "English",
volume = "873",
journal = "The Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing",
number = "1",

}

RIS

TY - JOUR

T1 - SDSS-IV MaNGA: environmental dependence of the Mgb/⟨Fe⟩-σ* relation for nearby galaxies

AU - Zheng, Zheng

AU - Li, Cheng

AU - Mao, Shude

AU - Wang, Huiyuan

AU - Liu, Chao

AU - Mo, Houjun

AU - Yuan, Zhen

AU - Maraston, Claudia

AU - Thomas, Daniel

AU - Yan, Renbin

AU - Bundy, Kevin

AU - Long, R. J.

AU - Parikh, Taniya

AU - Oyarzún, Grecco

AU - Bizyaev, Dmitry

AU - Lacerna, Ivan

PY - 2019/3/5

Y1 - 2019/3/5

N2 - We use a sample of ~3000 galaxies from the MaNGA MPL-7 internal data release to study the α abundance distribution within low-redshift galaxies. We use the Lick index ratio Mgb/⟨Fe⟩ as an αabundance indicator to study relationships between the α abundance distribution and galaxy properties such as effective stellar velocity dispersion within 0.3 effective radii (σ*), galaxy environment, and dark matter halo formation time (zf ). We find that (1) all galaxies show a tight correlation between Mgb/⟨Fe⟩ and σ*;(2) "old" (Hβ < 3) low-σ* galaxies in high local density environment and inner regions within galaxy groups are enhanced in Mgb/⟨Fe⟩, while "young" (Hβ > 3) galaxies and high-mass galaxies show no or less environmental dependence; (3) "old" galaxies with high-zf  show enhanced Mgb⟨Fe⟩/ over low- and medium-zf ; and (4) Mgb/⟨Fe⟩ gradients are close to zero and show dependence on σ* but no obvious dependence on the environment or zf . Our study indicates that stellar velocity dispersion or galaxy mass is the main parameter driving the Mgb/⟨Fe⟩ enhancement, although environments appear to have modest effects, particularly for low- and medium-mass galaxies.

AB - We use a sample of ~3000 galaxies from the MaNGA MPL-7 internal data release to study the α abundance distribution within low-redshift galaxies. We use the Lick index ratio Mgb/⟨Fe⟩ as an αabundance indicator to study relationships between the α abundance distribution and galaxy properties such as effective stellar velocity dispersion within 0.3 effective radii (σ*), galaxy environment, and dark matter halo formation time (zf ). We find that (1) all galaxies show a tight correlation between Mgb/⟨Fe⟩ and σ*;(2) "old" (Hβ < 3) low-σ* galaxies in high local density environment and inner regions within galaxy groups are enhanced in Mgb/⟨Fe⟩, while "young" (Hβ > 3) galaxies and high-mass galaxies show no or less environmental dependence; (3) "old" galaxies with high-zf  show enhanced Mgb⟨Fe⟩/ over low- and medium-zf ; and (4) Mgb/⟨Fe⟩ gradients are close to zero and show dependence on σ* but no obvious dependence on the environment or zf . Our study indicates that stellar velocity dispersion or galaxy mass is the main parameter driving the Mgb/⟨Fe⟩ enhancement, although environments appear to have modest effects, particularly for low- and medium-mass galaxies.

KW - galaxies: abundances

KW - galaxies: evolution

KW - galaxies: general

KW - galaxies: statistics

KW - galaxies: stellar content

KW - galaxies: structure

KW - RCUK

KW - STFC

KW - ST/N000668/1

UR - http://www.scopus.com/inward/record.url?scp=85063571257&partnerID=8YFLogxK

U2 - 10.3847/1538-4357/ab03d2

DO - 10.3847/1538-4357/ab03d2

M3 - Article

AN - SCOPUS:85063571257

VL - 873

JO - The Astrophysical Journal

JF - The Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 63

ER -

ID: 14003491