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Radio continuum size evolution of star-forming galaxies over 0.35 < z < 2.25
Astronomy and Astrophysics, 625 (2019); A114. https://doi.org/10.1051/0004-6361/201935178
Jiménez-Andrade, E. F.; Magnelli, B.; Karim, A.; Zamorani, G.; Bondi, M.; Schinnerer, E.; Sargent, M.; Romano-Díaz, E.; Novak, Mladen; Lang, P.; Bertoldi, F.; Vardoulaki, E.; Toft, S.; Smolčić, Vernesa; Harrington, K.; Leslie, S.; Delhaize, J.; Liu, D.; Karoumpis, C.; Kartaltepe, J. Koekemoer Više autora...

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Jiménez Andrade, E. F., Magnelli, B., Karim, A., Zamorani, G., Bondi, M., Schinnerer, E. ... Kartaltepe, J. K. (2019). Radio continuum size evolution of star-forming galaxies over 0.35 < z < 2.25. Astronomy and Astrophysics, 625.. doi: 10.1051/0004-6361/201935178

Jiménez Andrade, E. F., et al. "Radio continuum size evolution of star-forming galaxies over 0.35 < z < 2.25." Astronomy and Astrophysics, vol. 625, 2019. https://doi.org/10.1051/0004-6361/201935178

Jiménez Andrade, E. F., B. Magnelli, A. Karim, G. Zamorani, M. Bondi, E. Schinnerer, M. Sargent, et al. "Radio continuum size evolution of star-forming galaxies over 0.35 < z < 2.25." Astronomy and Astrophysics 625 (2019). https://doi.org/10.1051/0004-6361/201935178

Jiménez Andrade, E. F., et al. (2019) 'Radio continuum size evolution of star-forming galaxies over 0.35 < z < 2.25', Astronomy and Astrophysics, 625. doi: 10.1051/0004-6361/201935178

Jiménez Andrade EF, Magnelli B, Karim A, Zamorani G, Bondi M, Schinnerer E, i sur.. Radio continuum size evolution of star-forming galaxies over 0.35 < z < 2.25. Astronomy and Astrophysics [Internet]. 2019. [pristupljeno 28.02.2025.];625. doi: 10.1051/0004-6361/201935178

E. F. Jiménez Andrade, et al., "Radio continuum size evolution of star-forming galaxies over 0.35 < z < 2.25", Astronomy and Astrophysics, vol. 625, 2019. [Online]. Dostupno na: https://urn.nsk.hr/urn:nbn:hr:217:858453. [Citirano: 28.02.2025.]

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Naslov (engleski)Radio continuum size evolution of star-forming galaxies over 0.35 < z < 2.25
AutorE. F. Jiménez-Andrade
AutorB. Magnelli
AutorA. Karim
AutorG. Zamorani
AutorM. Bondi
AutorE. Schinnerer
AutorM. Sargent
AutorE. Romano-Díaz
AutorMladen Novak
AutorP. Lang
AutorF. Bertoldi
AutorE. Vardoulaki
AutorS. Toft
AutorVernesa Smolčić
AutorK. Harrington
AutorS. Leslie
AutorJ. Delhaize
AutorD. Liu
AutorC. Karoumpis
AutorJ. Koekemoer Kartaltepe
Autorova ustanovaSveučilište u Zagrebu
Prirodoslovno-matematički fakultet
(Fizički odsjek)
Znanstveno / umjetničko
područje, polje i grana		PRIRODNE ZNANOSTI
Fizika
Astronomija i astrofizika
Sažetak (engleski)
To better constrain the physical mechanisms driving star formation, we present the first systematic study of the radio continuum size evolution of star-forming galaxies (SFGs) over the redshift range 0.35 < z < 2.25. We use the VLA COSMOS 3 GHz map (noise rms = 2.3 μJy beam- 1, θbeam = 0.75 arcsec) to construct a mass- complete sample of 3184 radio-selected SFGs that reside on and above the main sequence (MS) of SFGs. We constrain the overall extent of star formation activity in galaxies... Više by applying a 2D Gaussian model to their radio continuum emission. Extensive Monte Carlo simulations are used to validate the robustness of our measurements and characterize the selection function. We find no clear dependence between the radio size and stellar mass, M⋆, of SFGs with 10.5 ≲ log(M⋆/M☉) ≲ 11.5. Our analysis suggests that MS galaxies are preferentially extended, while SFGs above the MS are always compact. The median effective radius of SFGs on (above) the MS of Reff = 1.5 ± 0.2 (1.0 ± 0.2) kpc remains nearly constant with cosmic time ; a parametrization of the form Reff ∝ (1 + z)α yields a shallow slope of only α = -0.26 ± 0.08 (0.12 ± 0.14) for SFGs on (above) the MS. The size of the stellar component of galaxies is larger than the extent of the radio continuum emission by a factor ∼2 (1.3) at z = 0.5 (2), indicating star formation is enhanced at small radii. The galactic-averaged star formation rate surface density (ΣSFR) scales with the distance to the MS, except for a fraction of MS galaxies (≲10%) that harbor starburst-like ΣSFR. These "hidden" starbursts might have experienced a compaction phase due to disk instability and/or a merger-driven burst of star formation, which may or may not significantly offset a galaxy from the MS. We thus propose to use ΣSFR and distance to the MS in conjunction to better identify the galaxy population undergoing a starbursting phase. Sakrij dio sažetka
Ključne riječi (engleski)
Jezikengleski
Vrsta publikacijeZnanstveni rad - Izvorni znanstveni rad
Status objaveObjavljen
Vrsta recenzijeRecenziran - međunarodna recenzija
Verzija publikacijeObjavljena verzija rada (izdavačev PDF)
Naslov časopisaAstronomy and Astrophysics
Brojčani podacivol. 625, A114
p-ISSN0004-6361
e-ISSN1432-0746
DOIhttps://doi.org/10.1051/0004-6361/201935178
URN:NBNurn:nbn:hr:217:858453
Datum objave publikacije2019
Vrsta resursaTekst
Prava pristupaOtvoreni pristup
Uvjeti korištenjaIkona licence Zaštićeno autorskim pravom.
Javna napomena© ESO 2019. Received 31 January 2019. Accepted 28 March 2019. Published online 22 May 2019.
Datum i vrijeme pohrane2020-07-22 13:30:02
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