Galaxy And Mass Assembly (GAMA): the connection between metals, specific SFR and H I gas in galaxies: the Z-SSFR relation

M. A. Lara-Lopez; A. M. Hopkins; A. R. Lopez-Sanchez; S. Brough; M. Colless; J. Bland-Hawthorn; S. Driver; C. Foster; J. Liske; J. Loveday; A. S. G. Robotham; R. G. Sharp; O. Steele; E. N. Taylor

doi:10.1093/mnrasl/slt054

Galaxy And Mass Assembly (GAMA): the connection between metals, specific SFR and H I gas in galaxies: the Z-SSFR relation

M. A. Lara-Lopez^*, A. M. Hopkins, A. R. Lopez-Sanchez, S. Brough, M. Colless, J. Bland-Hawthorn, S. Driver, C. Foster, J. Liske, J. Loveday, A. S. G. Robotham, R. G. Sharp, O. Steele, E. N. Taylor

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We study the interplay between gas phase metallicity (Z), specific star formation rate (SSFR) and neutral hydrogen gas (H i) for galaxies of different stellar masses. Our study uses spectroscopic data from Galaxy and Mass Assembly and Sloan Digital Sky Survey (SDSS) star-forming galaxies, as well as H i detection from the Arecibo Legacy Fast Arecibo L-band Feed Array (ALFALFA) and Galex Arecibo SDSS Survey (GASS) public catalogues. We present a model based on the Z-SSFR relation that shows that at a given stellar mass, depending on the amount of gas, galaxies will follow opposite behaviours. Low-mass galaxies with a large amount of gas will show high SSFR and low metallicities, while low-mass galaxies with small amounts of gas will show lower SSFR and high metallicities. In contrast, massive galaxies with a large amount of gas will show moderate SSFR and high metallicities, while massive galaxies with small amounts of gas will show low SSFR and low metallicities. Using ALFALFA and GASS counterparts, we find that the amount of gas is related to those drastic differences in Z and SSFR for galaxies of a similar stellar mass.

Original language	English
Pages (from-to)	L35-L39
Number of pages	5
Journal	Monthly Notices of the Royal Astronomical Society
Volume	433
Issue number	1
DOIs	https://doi.org/10.1093/mnrasl/slt054
Publication status	Published - Jun 2013

Keywords

galaxies: abundances
galaxies: fundamental parameters
galaxies: star formation
galaxies: statistics
STAR-FORMING GALAXIES
DIGITAL SKY SURVEY
METALLICITY RELATION
STELLAR MASS
DATA RELEASE
EVOLUTION
REDSHIFT
SDSS
PARAMETERS
UNIVERSE

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Lara-Lopez, M. A., Hopkins, A. M., Lopez-Sanchez, A. R., Brough, S., Colless, M., Bland-Hawthorn, J., Driver, S., Foster, C., Liske, J., Loveday, J., Robotham, A. S. G., Sharp, R. G., Steele, O., & Taylor, E. N. (2013). Galaxy And Mass Assembly (GAMA): the connection between metals, specific SFR and H I gas in galaxies: the Z-SSFR relation. Monthly Notices of the Royal Astronomical Society, 433(1), L35-L39. https://doi.org/10.1093/mnrasl/slt054

@article{04d115e6f0334bb7a52f0ab02deb7b22,

title = "Galaxy And Mass Assembly (GAMA): the connection between metals, specific SFR and H I gas in galaxies: the Z-SSFR relation",

abstract = "We study the interplay between gas phase metallicity (Z), specific star formation rate (SSFR) and neutral hydrogen gas (H i) for galaxies of different stellar masses. Our study uses spectroscopic data from Galaxy and Mass Assembly and Sloan Digital Sky Survey (SDSS) star-forming galaxies, as well as H i detection from the Arecibo Legacy Fast Arecibo L-band Feed Array (ALFALFA) and Galex Arecibo SDSS Survey (GASS) public catalogues. We present a model based on the Z-SSFR relation that shows that at a given stellar mass, depending on the amount of gas, galaxies will follow opposite behaviours. Low-mass galaxies with a large amount of gas will show high SSFR and low metallicities, while low-mass galaxies with small amounts of gas will show lower SSFR and high metallicities. In contrast, massive galaxies with a large amount of gas will show moderate SSFR and high metallicities, while massive galaxies with small amounts of gas will show low SSFR and low metallicities. Using ALFALFA and GASS counterparts, we find that the amount of gas is related to those drastic differences in Z and SSFR for galaxies of a similar stellar mass.",

keywords = "galaxies: abundances, galaxies: fundamental parameters, galaxies: star formation, galaxies: statistics, STAR-FORMING GALAXIES, DIGITAL SKY SURVEY, METALLICITY RELATION, STELLAR MASS, DATA RELEASE, EVOLUTION, REDSHIFT, SDSS, PARAMETERS, UNIVERSE",

author = "Lara-Lopez, {M. A.} and Hopkins, {A. M.} and Lopez-Sanchez, {A. R.} and S. Brough and M. Colless and J. Bland-Hawthorn and S. Driver and C. Foster and J. Liske and J. Loveday and Robotham, {A. S. G.} and Sharp, {R. G.} and O. Steele and Taylor, {E. N.}",

year = "2013",

month = jun,

doi = "10.1093/mnrasl/slt054",

language = "English",

volume = "433",

pages = "L35--L39",

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

issn = "0035-8711",

publisher = "Oxford University Press",

number = "1",

}

Lara-Lopez, MA, Hopkins, AM, Lopez-Sanchez, AR, Brough, S, Colless, M, Bland-Hawthorn, J, Driver, S, Foster, C, Liske, J, Loveday, J, Robotham, ASG, Sharp, RG, Steele, O & Taylor, EN 2013, 'Galaxy And Mass Assembly (GAMA): the connection between metals, specific SFR and H I gas in galaxies: the Z-SSFR relation', Monthly Notices of the Royal Astronomical Society, vol. 433, no. 1, pp. L35-L39. https://doi.org/10.1093/mnrasl/slt054

TY - JOUR

T1 - Galaxy And Mass Assembly (GAMA)

T2 - the connection between metals, specific SFR and H I gas in galaxies: the Z-SSFR relation

AU - Lara-Lopez, M. A.

AU - Hopkins, A. M.

AU - Lopez-Sanchez, A. R.

AU - Brough, S.

AU - Colless, M.

AU - Bland-Hawthorn, J.

AU - Driver, S.

AU - Foster, C.

AU - Liske, J.

AU - Loveday, J.

AU - Robotham, A. S. G.

AU - Sharp, R. G.

AU - Steele, O.

AU - Taylor, E. N.

PY - 2013/6

Y1 - 2013/6

N2 - We study the interplay between gas phase metallicity (Z), specific star formation rate (SSFR) and neutral hydrogen gas (H i) for galaxies of different stellar masses. Our study uses spectroscopic data from Galaxy and Mass Assembly and Sloan Digital Sky Survey (SDSS) star-forming galaxies, as well as H i detection from the Arecibo Legacy Fast Arecibo L-band Feed Array (ALFALFA) and Galex Arecibo SDSS Survey (GASS) public catalogues. We present a model based on the Z-SSFR relation that shows that at a given stellar mass, depending on the amount of gas, galaxies will follow opposite behaviours. Low-mass galaxies with a large amount of gas will show high SSFR and low metallicities, while low-mass galaxies with small amounts of gas will show lower SSFR and high metallicities. In contrast, massive galaxies with a large amount of gas will show moderate SSFR and high metallicities, while massive galaxies with small amounts of gas will show low SSFR and low metallicities. Using ALFALFA and GASS counterparts, we find that the amount of gas is related to those drastic differences in Z and SSFR for galaxies of a similar stellar mass.

AB - We study the interplay between gas phase metallicity (Z), specific star formation rate (SSFR) and neutral hydrogen gas (H i) for galaxies of different stellar masses. Our study uses spectroscopic data from Galaxy and Mass Assembly and Sloan Digital Sky Survey (SDSS) star-forming galaxies, as well as H i detection from the Arecibo Legacy Fast Arecibo L-band Feed Array (ALFALFA) and Galex Arecibo SDSS Survey (GASS) public catalogues. We present a model based on the Z-SSFR relation that shows that at a given stellar mass, depending on the amount of gas, galaxies will follow opposite behaviours. Low-mass galaxies with a large amount of gas will show high SSFR and low metallicities, while low-mass galaxies with small amounts of gas will show lower SSFR and high metallicities. In contrast, massive galaxies with a large amount of gas will show moderate SSFR and high metallicities, while massive galaxies with small amounts of gas will show low SSFR and low metallicities. Using ALFALFA and GASS counterparts, we find that the amount of gas is related to those drastic differences in Z and SSFR for galaxies of a similar stellar mass.

KW - galaxies: abundances

KW - galaxies: fundamental parameters

KW - galaxies: star formation

KW - galaxies: statistics

KW - STAR-FORMING GALAXIES

KW - DIGITAL SKY SURVEY

KW - METALLICITY RELATION

KW - STELLAR MASS

KW - DATA RELEASE

KW - EVOLUTION

KW - REDSHIFT

KW - SDSS

KW - PARAMETERS

KW - UNIVERSE

U2 - 10.1093/mnrasl/slt054

DO - 10.1093/mnrasl/slt054

M3 - Article

SN - 0035-8711

VL - 433

SP - L35-L39

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

Galaxy And Mass Assembly (GAMA): the connection between metals, specific SFR and H I gas in galaxies: the Z-SSFR relation

Abstract

Keywords

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