Mapping Metallicity Variations across Nearby Galaxy Disks

Article

Kreckel, K., Ho, I.-T, Blanc, G. A., Groves, B., Santoro, F., Schinnerer, E., Bigiel, F., Chevance, M., Congiu, E., Emsellem, E., Faesi, C., Glover, S. C. O., Grasha, K., Kruijssen, J. M. D., Lang, P., Leroy, A. K., Meidt, Sharon, McElroy, R., Pety, J., ..., Schruba, A.. 2019. "Mapping Metallicity Variations across Nearby Galaxy Disks." The Astrophysical Journal: an international review of astronomy and astronomical physics. 887 (1). https://doi.org/10.3847/1538-4357/ab5115
Article Title

Mapping Metallicity Variations across Nearby Galaxy Disks

ERA Journal ID1057
Article CategoryArticle
AuthorsKreckel, K., Ho, I.-T, Blanc, G. A., Groves, B., Santoro, F., Schinnerer, E., Bigiel, F., Chevance, M., Congiu, E., Emsellem, E., Faesi, C., Glover, S. C. O., Grasha, K., Kruijssen, J. M. D., Lang, P., Leroy, A. K., Meidt, Sharon, McElroy, R., Pety, J., Rosolowsky, E., Saito, T., Sandstrom, K., Sanchez-Blazquez, P. and Schruba, A.
Journal TitleThe Astrophysical Journal: an international review of astronomy and astronomical physics
Journal Citation887 (1)
Article Number80
Number of Pages39
Year2019
PublisherIOP Publishing
Place of PublicationUnited States
ISSN0004-637X
1538-4357
Digital Object Identifier (DOI)https://doi.org/10.3847/1538-4357/ab5115
Web Address (URL)https://iopscience.iop.org/article/10.3847/1538-4357/ab5115
AbstractThe distribution of metals within a galaxy traces the baryon cycle and the buildup of galactic disks, but the detailed gas phase metallicity distribution remains poorly sampled. We have determined the gas phase oxygen abundances for 7138 H ii regions across the disks of eight nearby galaxies using Very Large Telescope/Multi Unit Spectroscopic Explorer (MUSE) optical integral field spectroscopy as part of the PHANGS–MUSE survey. After removing the first-order radial gradients present in each galaxy, we look at the statistics of the metallicity offset (ΔO/H) and explore azimuthal variations. Across each galaxy, we find low (σ = 0.03–0.05 dex) scatter at any given radius, indicative of efficient mixing. We compare physical parameters for those H ii regions that are 1σ outliers toward both enhanced and reduced abundances. Regions with enhanced abundances have high ionization parameter, higher Hα luminosity, lower Hα velocity dispersion, younger star clusters, and associated molecular gas clouds showing higher molecular gas densities. This indicates recent star formation has locally enriched the material. Regions with reduced abundances show increased Hα velocity dispersions, suggestive of mixing introducing more pristine material. We observe subtle azimuthal variations in half of the sample, but cannot always cleanly associate this with the spiral pattern. Regions with enhanced and reduced abundances are found distributed throughout the disk, and in half of our galaxies we can identify subsections of spiral arms with clearly associated metallicity gradients. This suggests spiral arms play a role in organizing and mixing the interstellar medium.
KeywordsH II regions; Galaxy abundances; Chemical abundances; Metallicity
Related Output
Is supplemented byErratum: "Mapping Metallicity Variations across Nearby Galaxy Disks" (2019, ApJ, 887, 80)
Is supplemented byGas phase oxygen abundances for HII regions : J/ApJ/887/80
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 2020510102. Astronomical instrumentation
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Byline AffiliationsMax Planck Institute for Astronomy, Germany
Heidelberg University, Germany
Carnegie Institution for Science, United States
University of Chile, Chile
University of Western Australia
Australian National University
University of Bonn, Germany
INAF - Brera Astronomical Observatory, Italy
European Southern Observatory (ESO), Germany
Claude Bernard University Lyon 1, France
Ohio State University, United States
University of Gent, Belgium
Paris Sciences and Letters University, France
Institut de Radioastronomie Millimetrique (IRAM), France
University of Alberta, Canada
University of California San Diego, United States
Autonomous University of Madrid, Spain
Max Planck Institute for Extraterrestrial Physics, Germany
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Krumpe, M., Husemann, B., Tremblay, G.R., Urrutia, T., Powell, M., Davis, T.A., Scharwächter, J., Dexter, J., Busch, G., Combes, F., Croom, S. M., Eckart, A., McElroy, R. E., Pérez-Torres, M. and Leung, G.. 2017. "The Close AGN Reference Survey (CARS). Mrk 1018 halts dimming and experiences strong short-term variability." Astronomy and Astrophysics: a European journal. 607. https://doi.org/10.1051/0004-6361/201731967
The SAMI Galaxy Survey: the low-redshift stellar mass Tully-Fisher relation
Bloom, J. V., Croom, S. M., Bryant, J. J., Callingham, J. R., Schaefer, A. L., Cortese, L., Hopkins, A. M., D'Eugenio, F., Scott, N., Glazebrook, K., Tonini, C., McElroy, R. E., Clark, H.A., Catinella, B., Allen, J.T., Bland-Hawthorn, J., Goodwin, M., Green, A.W., Konstantopoulos, I.S., ..., Sharp, R.. 2017. "The SAMI Galaxy Survey: the low-redshift stellar mass Tully-Fisher relation." Monthly Notices of the Royal Astronomical Society. 472 (2), pp. 1809-1824. https://doi.org/10.1093/mnras/stx1701
Host galaxies of luminous type II AGN: Winds, shocks, and comparisons to The SAMI Galaxy Survey
McElroy, Rebecca, Croom, Scott and Pracy, Michael. 2016. "Host galaxies of luminous type II AGN: Winds, shocks, and comparisons to The SAMI Galaxy Survey." 227th American Astronomical Society Meeting. Kissimmee, FL, United States 04 - 08 Jan 2016 United States.
The Close AGN Reference Survey (CARS). Mrk 1018 returns to the shadows after 30 years as a Seyfert 1
McElroy, R. E., Husemann, B., Croom, S., Davis, T.A., Bennert, V., Busch, G., Combes, F., Eckart, A., Pérez-Torres, M., Powell, M., Scharwächter, J., Tremblay, G.R. and Urrutia, T.. 2016. "The Close AGN Reference Survey (CARS). Mrk 1018 returns to the shadows after 30 years as a Seyfert 1." Astronomy and Astrophysics: a European journal. 593, p. L8. https://doi.org/10.1051/0004-6361/201629102
Catching a Changing Look Quasar as it undergoes significant changes in accretion rate
Krumpe, Mirko, Croom, Scott, Davis, Timothy Andrew, Husemann, Bernd, McElroy, Rebecca, Tremblay, Grant R. and Urrutia, Tanya. 2016. Catching a Changing Look Quasar as it undergoes significant changes in accretion rate.
The Close AGN Reference Survey (CARS). What is causing Mrk 1018's return to the shadows after 30 years?
Husemann, B., Urrutia, T., Tremblay, G.R., Krumpe, M., Dexter, J., Busch, G., Combes, F., Croom, S. M., Davis, T.A., Eckart, A., McElroy, R. E., Pérez-Torres, M., Powell, T.M. and Scharwächter, J.. 2016. "The Close AGN Reference Survey (CARS). What is causing Mrk 1018's return to the shadows after 30 years?" Astronomy and Astrophysics: a European journal. 593, p. L9. https://doi.org/10.1051/0004-6361/201629245
IFU observations of luminous type II AGN - I. Evidence for ubiquitous winds
McElroy, Rebecca, Croom, Scott M., Pracy, Michael, Sharp, Rob, Ho, I-Ting and Medling, Anne M.. 2015. "IFU observations of luminous type II AGN - I. Evidence for ubiquitous winds." Monthly Notices of the Royal Astronomical Society. 446 (2), pp. 2186-2204. https://doi.org/10.1093/mnras/stu2224
The SAMI Galaxy Survey: cubism and covariance, putting round pegs into square holes
Sharp, R., Allen, J. T., Fogarty, L. M. R., Croom, S. M., Cortese, L., Green, A. W., Nielsen, J., Richards, S. N., Scott, N., Taylor, E. N., Barnes, L. A., Barnes, A. E., Birchall, M., Bland-Hawthorn, J., Bloom, J. V., Brough, S., Bryant, J. J., Cecil, G. N., Colless, M., ..., Walcher, C. J.. 2015. "The SAMI Galaxy Survey: cubism and covariance, putting round pegs into square holes." Monthly Notices of the Royal Astronomical Society. 446 (2), pp. 1551-1566. https://doi.org/10.1093/mnras/stu2055
The SAMI Galaxy Survey: Early Data Release
Allen, J. T., Croom, S. M., Konstantopoulos, I. S., Bryant, J. J., Sharp, R., Cecil, G. N., Fogarty, L. M. R., Foster, C., Green, A. W., Ho, I. -T., Owers, M. S., Schaefer, A. L., Scott, N., Bauer, A. E., Baldry, I., Barnes, L. A., Bland-Hawthorn, J., Bloom, J. V., Brough, S., ..., Walcher, C. J.. 2015. "The SAMI Galaxy Survey: Early Data Release." Monthly Notices of the Royal Astronomical Society. 446 (2), pp. 1567-1583. https://doi.org/10.1093/mnras/stu2057
The SAMI Galaxy Survey: instrument specification and target selection
Bryant, J. J., Owers, M. S., Robotham, A. S. G., Croom, S. M., Driver, S. P., Drinkwater, M. J., Lorente, N. P. F., Cortese, L., Scott, N., Colless, M., Schaefer, A., Taylor, E. N., Konstantopoulos, I. S., Allen, J. T., Baldry, I., Barnes, L., Bauer, A. E., Bland-Hawthorn, J., Bloom, J. V., ..., Walcher, C. J.. 2015. "The SAMI Galaxy Survey: instrument specification and target selection." Monthly Notices of the Royal Astronomical Society. 447 (3), pp. 2857-2879. https://doi.org/10.1093/mnras/stu2635
VizieR Online Data Catalog: SAMI Galaxy Survey: EDR (Allen+, 2015)
Allen, J. T., Croom, S. M., Konstantopoulos, I. S., Bryant, J. J., Sharp, R., Cecil, G. N., Fogarty, L. M. R., Foster, C., Green, A. W., Ho, I. -T., Owers, M. S., Schaefer, A. L., Scott, N., Bauer, A. E., Baldry, I., Barnes, L. A., Bland-Hawthorn, J., Bloom, J. V., Brough, S., ..., Walcher, C. J.. 2015. VizieR Online Data Catalog: SAMI Galaxy Survey: EDR (Allen+, 2015) . University of Southern Queensland. https://doi.org/10.26192/z75x4
Spectroscopic observations of sn 2012fr: A luminous, normal type Ia supernova with early high-velocity features and a late velocity plateau
Childress, M.J., Scalzo, R.A., Sim, S.A., Tucker, B.E., Yuan, F., Schmidt, B.P., Cenko, S.B., Silverman, J.M., Contreras, C., Hsiao, E.Y., Phillips, M., Morrell, N., Jha, S.W., McCully, C., Filippenko, A.V., Anderson, J.P., Benetti, S., Bufano, F., de Jaeger, T., ..., Zhou, G.. 2013. "Spectroscopic observations of sn 2012fr: A luminous, normal type Ia supernova with early high-velocity features and a late velocity plateau." The Astrophysical Journal: an international review of astronomy and astronomical physics. 770 (1), pp. 1-20. https://doi.org/10.1093/mnras/stt813