The ALMA-ALPINE [CII] survey: Kennicutt-Schmidt relation in four massive main-sequence galaxies at z ~ 4.5

M. Béthermin; C. Accard; C. Guillaume; M. Dessauges-Zavadsky; E. Ibar; P. Cassata; T. Devereaux; A. Faisst; J. Freundlich; G. C. Jones; K. Kraljic; H. Algera; R. O. Amorín; S. Bardelli; M. Boquien; V. Buat; E. Donghia; Y. Dubois; A. Ferrara; Y. Fudamoto; M. Ginolfi; P. Guillard; M. Giavalisco; C. Gruppioni; G. Gururajan; N. Hathi; C. C. Hayward; A. M. Koekemoer; B. C. Lemaux; G. E. Magdis; J. Molina; D. Narayanan; L. Mayer; F. Pozzi; F. Rizzo; M. Romano; L. Tasca; P. Theulé; D. Vergani; L. Vallini; G. Zamorani; A. Zanella; E. Zucca

doi:10.1051/0004-6361/202348115

The ALMA-ALPINE [CII] survey: Kennicutt-Schmidt relation in four massive main-sequence galaxies at z ~ 4.5

M. Béthermin^*
, C. Accard
, C. Guillaume
, M. Dessauges-Zavadsky
, E. Ibar
, P. Cassata
, T. Devereaux
, A. Faisst
, J. Freundlich
, G. C. Jones
, K. Kraljic
, H. Algera
, R. O. Amorín
, S. Bardelli
, M. Boquien
, V. Buat
, E. Donghia
, Y. Dubois
, A. Ferrara
, Y. Fudamoto

M. Ginolfi, P. Guillard, M. Giavalisco, C. Gruppioni, G. Gururajan, N. Hathi, C. C. Hayward, A. M. Koekemoer, B. C. Lemaux, G. E. Magdis, J. Molina, D. Narayanan, L. Mayer, F. Pozzi, F. Rizzo, M. Romano, L. Tasca, P. Theulé, D. Vergani, L. Vallini, G. Zamorani, A. Zanella, E. Zucca

^*Corresponding author for this work

CNRS
University of Geneva
Universidad de Valparaíso
California Institute of Technology
University of Oxford
Hiroshima University
Universidad de La Serena
Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna
Universidad de Tarapacá
University of Wisconsin-Madison
Institut d’Astrophysique de Paris
Scuola Normale Superiore di Pisa
Chiba University
University of Florence
University of Massachusetts
Space Telescope Science Institute
Simons Foundation
University of California at Davis
Chalmers University of Technology
University of Florida
University of Zurich
National Centre for Nuclear Research
Université de Strasbourg
Astronomical Observatory of Padua
University of Copenhagen

Research output: Contribution to journal › Journal article › Research › peer-review

61 Downloads (Orbit)

Abstract

Aims. The Kennicutt-Schmidt (KS) relation between the gas and the star formation rate (SFR) surface density (Σ_gas - Σ_SFR) is essential to understand star formation processes in galaxies. To date, it has been measured up to z ~ 2.5 in main-sequence galaxies. In this Letter our aim is to put constraints at z ~ 4.5 using a sample of four massive main-sequence galaxies observed by ALMA at high resolution. Methods. We obtained ~0.3″-resolution [CII] and continuum maps of our objects, which we then converted into gas and obscured SFR surface density maps. In addition, we produced unobscured SFR surface density maps by convolving Hubble ancillary data in the rest-frame UV. We then derived the average Σ_SFR in various Σ_gas bins, and estimated the uncertainties using a Monte Carlo sampling. Results. Our galaxy sample follows the KS relation measured in main-sequence galaxies at lower redshift, and is slightly lower than the predictions from simulations. Our data points probe the high end both in terms of Σ_gas and Σ_SFR, and gas depletion timescales (285-843 Myr) remain similar to z ~ 2 objects. However, three of our objects are clearly morphologically disturbed, and we could have expected shorter gas depletion timescales (≲100 Myr) similar to merger-driven starbursts at lower redshifts. This suggests that the mechanisms triggering starbursts at high redshift may be different than in the low- and intermediate-z Universe.

Original language	English
Article number	L8
Journal	Astronomy and Astrophysics
Volume	680
Number of pages	9
ISSN	0004-6361
DOIs	https://doi.org/10.1051/0004-6361/202348115
Publication status	Published - 2023

Keywords

Galaxies: high-redshift
Galaxies: ISM
Galaxies: star formation
Submillimeter: galaxies

Access to Document

10.1051/0004-6361/202348115Licence: CC BY

FulltextFinal published version, 1.06 MBLicence: CC BY

OpenUrl availability

Check availability in DTU Findit

Cite this

Béthermin, M., Accard, C., Guillaume, C., Dessauges-Zavadsky, M., Ibar, E., Cassata, P., Devereaux, T., Faisst, A., Freundlich, J., Jones, G. C., Kraljic, K., Algera, H., Amorín, R. O., Bardelli, S., Boquien, M., Buat, V., Donghia, E., Dubois, Y., Ferrara, A., ... Zucca, E. (2023). The ALMA-ALPINE [CII] survey: Kennicutt-Schmidt relation in four massive main-sequence galaxies at z ~ 4.5. Astronomy and Astrophysics, 680, Article L8. https://doi.org/10.1051/0004-6361/202348115

@article{66d7d0e328894126b1f3da5f670d49a8,

title = "The ALMA-ALPINE [CII] survey: Kennicutt-Schmidt relation in four massive main-sequence galaxies at z \textasciitilde{} 4.5",

abstract = "Aims. The Kennicutt-Schmidt (KS) relation between the gas and the star formation rate (SFR) surface density (Σgas - ΣSFR) is essential to understand star formation processes in galaxies. To date, it has been measured up to z \textasciitilde{} 2.5 in main-sequence galaxies. In this Letter our aim is to put constraints at z \textasciitilde{} 4.5 using a sample of four massive main-sequence galaxies observed by ALMA at high resolution. Methods. We obtained \textasciitilde{}0.3″-resolution [CII] and continuum maps of our objects, which we then converted into gas and obscured SFR surface density maps. In addition, we produced unobscured SFR surface density maps by convolving Hubble ancillary data in the rest-frame UV. We then derived the average ΣSFR in various Σgas bins, and estimated the uncertainties using a Monte Carlo sampling. Results. Our galaxy sample follows the KS relation measured in main-sequence galaxies at lower redshift, and is slightly lower than the predictions from simulations. Our data points probe the high end both in terms of Σgas and ΣSFR, and gas depletion timescales (285-843 Myr) remain similar to z \textasciitilde{} 2 objects. However, three of our objects are clearly morphologically disturbed, and we could have expected shorter gas depletion timescales (≲100 Myr) similar to merger-driven starbursts at lower redshifts. This suggests that the mechanisms triggering starbursts at high redshift may be different than in the low- and intermediate-z Universe.",

keywords = "Galaxies: high-redshift, Galaxies: ISM, Galaxies: star formation, Submillimeter: galaxies",

author = "M. B{\'e}thermin and C. Accard and C. Guillaume and M. Dessauges-Zavadsky and E. Ibar and P. Cassata and T. Devereaux and A. Faisst and J. Freundlich and Jones, \{G. C.\} and K. Kraljic and H. Algera and Amor{\'i}n, \{R. O.\} and S. Bardelli and M. Boquien and V. Buat and E. Donghia and Y. Dubois and A. Ferrara and Y. Fudamoto and M. Ginolfi and P. Guillard and M. Giavalisco and C. Gruppioni and G. Gururajan and N. Hathi and Hayward, \{C. C.\} and Koekemoer, \{A. M.\} and Lemaux, \{B. C.\} and Magdis, \{G. E.\} and J. Molina and D. Narayanan and L. Mayer and F. Pozzi and F. Rizzo and M. Romano and L. Tasca and P. Theul{\'e} and D. Vergani and L. Vallini and G. Zamorani and A. Zanella and E. Zucca",

note = "Publisher Copyright: {\textcopyright} The Authors 2023.",

year = "2023",

doi = "10.1051/0004-6361/202348115",

language = "English",

volume = "680",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

Béthermin, M, Accard, C, Guillaume, C, Dessauges-Zavadsky, M, Ibar, E, Cassata, P, Devereaux, T, Faisst, A, Freundlich, J, Jones, GC, Kraljic, K, Algera, H, Amorín, RO, Bardelli, S, Boquien, M, Buat, V, Donghia, E, Dubois, Y, Ferrara, A, Fudamoto, Y, Ginolfi, M, Guillard, P, Giavalisco, M, Gruppioni, C, Gururajan, G, Hathi, N, Hayward, CC, Koekemoer, AM, Lemaux, BC, Magdis, GE, Molina, J, Narayanan, D, Mayer, L, Pozzi, F, Rizzo, F, Romano, M, Tasca, L, Theulé, P, Vergani, D, Vallini, L, Zamorani, G, Zanella, A & Zucca, E 2023, 'The ALMA-ALPINE [CII] survey: Kennicutt-Schmidt relation in four massive main-sequence galaxies at z ~ 4.5', Astronomy and Astrophysics, vol. 680, L8. https://doi.org/10.1051/0004-6361/202348115

TY - JOUR

T1 - The ALMA-ALPINE [CII] survey

T2 - Kennicutt-Schmidt relation in four massive main-sequence galaxies at z ~ 4.5

AU - Béthermin, M.

AU - Accard, C.

AU - Guillaume, C.

AU - Dessauges-Zavadsky, M.

AU - Ibar, E.

AU - Cassata, P.

AU - Devereaux, T.

AU - Faisst, A.

AU - Freundlich, J.

AU - Jones, G. C.

AU - Kraljic, K.

AU - Algera, H.

AU - Amorín, R. O.

AU - Bardelli, S.

AU - Boquien, M.

AU - Buat, V.

AU - Donghia, E.

AU - Dubois, Y.

AU - Ferrara, A.

AU - Fudamoto, Y.

AU - Ginolfi, M.

AU - Guillard, P.

AU - Giavalisco, M.

AU - Gruppioni, C.

AU - Gururajan, G.

AU - Hathi, N.

AU - Hayward, C. C.

AU - Koekemoer, A. M.

AU - Lemaux, B. C.

AU - Magdis, G. E.

AU - Molina, J.

AU - Narayanan, D.

AU - Mayer, L.

AU - Pozzi, F.

AU - Rizzo, F.

AU - Romano, M.

AU - Tasca, L.

AU - Theulé, P.

AU - Vergani, D.

AU - Vallini, L.

AU - Zamorani, G.

AU - Zanella, A.

AU - Zucca, E.

PY - 2023

Y1 - 2023

N2 - Aims. The Kennicutt-Schmidt (KS) relation between the gas and the star formation rate (SFR) surface density (Σgas - ΣSFR) is essential to understand star formation processes in galaxies. To date, it has been measured up to z ~ 2.5 in main-sequence galaxies. In this Letter our aim is to put constraints at z ~ 4.5 using a sample of four massive main-sequence galaxies observed by ALMA at high resolution. Methods. We obtained ~0.3″-resolution [CII] and continuum maps of our objects, which we then converted into gas and obscured SFR surface density maps. In addition, we produced unobscured SFR surface density maps by convolving Hubble ancillary data in the rest-frame UV. We then derived the average ΣSFR in various Σgas bins, and estimated the uncertainties using a Monte Carlo sampling. Results. Our galaxy sample follows the KS relation measured in main-sequence galaxies at lower redshift, and is slightly lower than the predictions from simulations. Our data points probe the high end both in terms of Σgas and ΣSFR, and gas depletion timescales (285-843 Myr) remain similar to z ~ 2 objects. However, three of our objects are clearly morphologically disturbed, and we could have expected shorter gas depletion timescales (≲100 Myr) similar to merger-driven starbursts at lower redshifts. This suggests that the mechanisms triggering starbursts at high redshift may be different than in the low- and intermediate-z Universe.

AB - Aims. The Kennicutt-Schmidt (KS) relation between the gas and the star formation rate (SFR) surface density (Σgas - ΣSFR) is essential to understand star formation processes in galaxies. To date, it has been measured up to z ~ 2.5 in main-sequence galaxies. In this Letter our aim is to put constraints at z ~ 4.5 using a sample of four massive main-sequence galaxies observed by ALMA at high resolution. Methods. We obtained ~0.3″-resolution [CII] and continuum maps of our objects, which we then converted into gas and obscured SFR surface density maps. In addition, we produced unobscured SFR surface density maps by convolving Hubble ancillary data in the rest-frame UV. We then derived the average ΣSFR in various Σgas bins, and estimated the uncertainties using a Monte Carlo sampling. Results. Our galaxy sample follows the KS relation measured in main-sequence galaxies at lower redshift, and is slightly lower than the predictions from simulations. Our data points probe the high end both in terms of Σgas and ΣSFR, and gas depletion timescales (285-843 Myr) remain similar to z ~ 2 objects. However, three of our objects are clearly morphologically disturbed, and we could have expected shorter gas depletion timescales (≲100 Myr) similar to merger-driven starbursts at lower redshifts. This suggests that the mechanisms triggering starbursts at high redshift may be different than in the low- and intermediate-z Universe.

KW - Galaxies: high-redshift

KW - Galaxies: ISM

KW - Galaxies: star formation

KW - Submillimeter: galaxies

U2 - 10.1051/0004-6361/202348115

DO - 10.1051/0004-6361/202348115

M3 - Journal article

AN - SCOPUS:85180781728

SN - 0004-6361

VL - 680

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - L8

ER -

The ALMA-ALPINE [CII] survey: Kennicutt-Schmidt relation in four massive main-sequence galaxies at z ~ 4.5

Abstract

Keywords

Access to Document

OpenUrl availability

Fingerprint

Cite this