A 50 pc Scale View of Star Formation Efficiency across NGC 628

Article

Kreckel, K., Faesi, C., Kruijssen, J., Schruba, A., Groves, B., Leroy, A., Bigiel, F., Blanc, G. A., Chevance, M., Herrera, C., Hughes, A., McElroy, R., Pety, J., Querejeta, M., Rosolowsky, E., Schinnerer, E., Sun, J., Usero, A. and Utomo, D.. 2018. "A 50 pc Scale View of Star Formation Efficiency across NGC 628." The Astrophysical Journal Letters. 863, p. L21. https://doi.org/10.3847/2041-8213/aad77d
Article Title

A 50 pc Scale View of Star Formation Efficiency across NGC 628

ERA Journal ID45091
Article CategoryArticle
AuthorsKreckel, K., Faesi, C., Kruijssen, J., Schruba, A., Groves, B., Leroy, A., Bigiel, F., Blanc, G. A., Chevance, M., Herrera, C., Hughes, A., McElroy, R., Pety, J., Querejeta, M., Rosolowsky, E., Schinnerer, E., Sun, J., Usero, A. and Utomo, D.
Journal TitleThe Astrophysical Journal Letters
Journal Citation863, p. L21
Number of Pages7
Year2018
PublisherIOP Publishing
Place of PublicationUnited Kingdom
ISSN2041-8205
2041-8213
Digital Object Identifier (DOI)https://doi.org/10.3847/2041-8213/aad77d
Web Address (URL)https://iopscience.iop.org/article/10.3847/2041-8213/aad77d
AbstractStar formation is a multi-scale process that requires tracing cloud formation and stellar feedback within the local (≲kpc) and global galaxy environment. We present first results from two large observing programs on the Atacama Large Millimeter/submillimeter Array (ALMA)and the Very Large Telescope/Multi Unit Spectroscopic Explorer(VLT/MUSE), mapping cloud scales (1″ = 47 pc) in both molecular gas and star-forming tracers across 90 kpc<SUP>2</SUP> of the central disk of NGC 628 to probe the physics of star formation. Systematic spatial offsets between molecular clouds and H II regions illustrate the time evolution of star-forming regions. Using uniform sampling of both maps on 50-500 pc scales, we infer molecular gas depletion times of 1-3 Gyr, but also find that the increase of scatter in the star formation relation on small scales is consistent with gas and H II regions being only weakly correlated at the cloud (50 pc) scale. This implies a short overlap phase for molecular clouds and H II regions, which we test by directly matching our catalog of 1502 H II regions and 738 GMCs. We uncover only 74 objects in the overlap phase, and we find depletion times >1 Gyr, significantly longer than previously reported for individual star-forming clouds in the Milky Way. Finally, we find no clear trends that relate variations in the depletion time observed on 500 pc scales to physical drivers (metallicity, molecular and stellar-mass surface density, molecular gas boundedness) on 50 pc scales.
Keywordsgalaxies: individual (NGC 628); galaxies: ISM; galaxies: star formation; H II regions; ISM: clouds; ISM: structure
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
Max Planck Institute for Extraterrestrial Physics, Germany
Australian National University
Ohio State University, United States
Carnegie Institution for Science, United States
University of Chile, Chile
Institut de Radioastronomie Millimetrique (IRAM), France
National center for scientific research (CNRS), France
Sorbonne University, France
European Southern Observatory (ESO), Chile
National Astronomical Observatory (IGN), Spain
University of Alberta, Canada
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The Close AGN Reference Survey (CARS)
Husemann, Bernd, Tremblay, Grant, Davis, Timothy, Busch, Gerold, McElroy, Rebecca, Neumann, Justus, Urrutia, Tanya, Krumpe, Mirko, Scharwächter, Julia, Powell, Meredith, Pérez-Torres, Miguel Perez-Torres and CARS Team. 2017. "The Close AGN Reference Survey (CARS)." The Messenger. 169, pp. 42-47. https://doi.org/10.18727/0722-6691/5038
Using an artificial neural network to classify multicomponent emission lines with integral field spectroscopy from SAMI and S7
Hampton, E. J., Medling, A. M., Groves, B., Kewley, L., Dopita, M., Davies, R., Ho, I. -T., Kaasinen, M., Leslie, S., Sharp, R., Sweet, S. M., Thomas, A. D., Allen, J., Bland-Hawthorn, J., Brough, S., Bryant, J. J., Croom, S., Goodwin, M., Green, A., ..., Shastri, P.. 2017. "Using an artificial neural network to classify multicomponent emission lines with integral field spectroscopy from SAMI and S7." Monthly Notices of the Royal Astronomical Society. 470 (3), pp. 3395-3416. https://doi.org/10.1093/mnras/stx1413
The Close AGN Reference Survey (CARS). Mrk 1018 halts dimming and experiences strong short-term variability
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) .
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