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The VANDELS survey: The relation between the UV continuum slope and stellar metallicity in star-forming galaxies at z   ∼  3. / Calabrò, A.; Castellano, M.; Pentericci, L.; Fontanot, F.; Menci, N.; Cullen, F.; Mclure, R.; Bolzonella, M.; Cimatti, A.; Marchi, F.; Talia, M.; Amorín, R.; Cresci, G.; De Lucia, G.; Fynbo, J.; Fontana, A.; Franco, M.; Hathi, N. P.; Hibon, P.; Hirschmann, M.; Mannucci, F.; Santini, P.; Saxena, A.; Schaerer, D.; Xie, L.; Zamorani, G.

In: Astronomy and Astrophysics, Vol. 646, A39, 04.02.2021.

Research output: Contribution to journalArticlepeer-review

Harvard

Calabrò, A, Castellano, M, Pentericci, L, Fontanot, F, Menci, N, Cullen, F, Mclure, R, Bolzonella, M, Cimatti, A, Marchi, F, Talia, M, Amorín, R, Cresci, G, De Lucia, G, Fynbo, J, Fontana, A, Franco, M, Hathi, NP, Hibon, P, Hirschmann, M, Mannucci, F, Santini, P, Saxena, A, Schaerer, D, Xie, L & Zamorani, G 2021, 'The VANDELS survey: The relation between the UV continuum slope and stellar metallicity in star-forming galaxies at z   ∼  3', Astronomy and Astrophysics, vol. 646, A39. https://doi.org/10.1051/0004-6361/202039244

APA

Calabrò, A., Castellano, M., Pentericci, L., Fontanot, F., Menci, N., Cullen, F., Mclure, R., Bolzonella, M., Cimatti, A., Marchi, F., Talia, M., Amorín, R., Cresci, G., De Lucia, G., Fynbo, J., Fontana, A., Franco, M., Hathi, N. P., Hibon, P., ... Zamorani, G. (2021). The VANDELS survey: The relation between the UV continuum slope and stellar metallicity in star-forming galaxies at z   ∼  3. Astronomy and Astrophysics, 646, [A39]. https://doi.org/10.1051/0004-6361/202039244

Vancouver

Author

Calabrò, A. ; Castellano, M. ; Pentericci, L. ; Fontanot, F. ; Menci, N. ; Cullen, F. ; Mclure, R. ; Bolzonella, M. ; Cimatti, A. ; Marchi, F. ; Talia, M. ; Amorín, R. ; Cresci, G. ; De Lucia, G. ; Fynbo, J. ; Fontana, A. ; Franco, M. ; Hathi, N. P. ; Hibon, P. ; Hirschmann, M. ; Mannucci, F. ; Santini, P. ; Saxena, A. ; Schaerer, D. ; Xie, L. ; Zamorani, G. / The VANDELS survey: The relation between the UV continuum slope and stellar metallicity in star-forming galaxies at z   ∼  3. In: Astronomy and Astrophysics. 2021 ; Vol. 646.

Bibtex

@article{669271f4f24a4ac6857599e482940810,
title = "The VANDELS survey: The relation between the UV continuum slope and stellar metallicity in star-forming galaxies at z   ∼  3",
abstract = "The estimate of stellar metallicities (Z∗) of high-z galaxies are of paramount importance in order to understand the complexity of dust effects and the reciprocal interrelations among stellar mass, dust attenuation, stellar age, and metallicity. Benefiting from uniquely deep far-UV spectra of > 500 star-forming galaxies at redshifts 2  <   z  <   5 extracted from the VANDELS survey and stacked in bins of stellar mass (M∗) and UV continuum slope (β), we estimate their stellar metallicities Z∗ from stellar photospheric absorption features at 1501 and 1719 {\AA}, which are calibrated with Starburst99 models and are largely unaffected by stellar age, dust, IMF, nebular continuum, or interstellar absorption. Comparing them to photometric-based spectral slopes in the 1250-1750 {\AA} range, we find that the stellar metallicity increases by ∼0.5 dex from β  ∼  -2 to β  ∼  -1 (1 ≲  A1600 ≲  3.2), and a dependence with β holds at fixed UV absolute luminosity MUV and stellar mass up to ∼109.65  M⊙ . As a result, metallicity is a fundamental ingredient for properly rescaling dust corrections based on MUV and M∗. Using the same absorption features, we analyzed the mass-metallicity relation (MZR), and find it to be consistent with the previous VANDELS estimation based on a global fit of the FUV spectra. Similarly, we do not find a significant evolution between z  ∼  2 and z  ∼  3.5. Finally, the slopes of our MZR and Z∗ - β relation are in agreement with the predictions of well-studied semi-analytic models (SAM) of galaxy formation, while some tensions remain concerning the absolute metallicity normalization. The relation between the UV slope and stellar metallicity is fundamental to the exploitation of large volume surveys with next-generation telescopes and for the physical characterization of galaxies in the first billion years of our Universe.",
keywords = "Galaxies: abundances, Galaxies: evolution, Galaxies: high-redshift, Galaxies: stellar content",
author = "A. Calabr{\`o} and M. Castellano and L. Pentericci and F. Fontanot and N. Menci and F. Cullen and R. Mclure and M. Bolzonella and A. Cimatti and F. Marchi and M. Talia and R. Amor{\'i}n and G. Cresci and {De Lucia}, G. and J. Fynbo and A. Fontana and M. Franco and Hathi, {N. P.} and P. Hibon and M. Hirschmann and F. Mannucci and P. Santini and A. Saxena and D. Schaerer and L. Xie and G. Zamorani",
note = "{\textcopyright} ESO 2021. This is the accepted manuscript version of an article which has been published in final form at https://doi.org/10.1051/0004-6361/202039244",
year = "2021",
month = feb,
day = "4",
doi = "10.1051/0004-6361/202039244",
language = "English",
volume = "646",
journal = "Astronomy & Astrophysics",
issn = "0004-6361",
publisher = "EDP Sciences",

}

RIS

TY - JOUR

T1 - The VANDELS survey: The relation between the UV continuum slope and stellar metallicity in star-forming galaxies at z   ∼  3

AU - Calabrò, A.

AU - Castellano, M.

AU - Pentericci, L.

AU - Fontanot, F.

AU - Menci, N.

AU - Cullen, F.

AU - Mclure, R.

AU - Bolzonella, M.

AU - Cimatti, A.

AU - Marchi, F.

AU - Talia, M.

AU - Amorín, R.

AU - Cresci, G.

AU - De Lucia, G.

AU - Fynbo, J.

AU - Fontana, A.

AU - Franco, M.

AU - Hathi, N. P.

AU - Hibon, P.

AU - Hirschmann, M.

AU - Mannucci, F.

AU - Santini, P.

AU - Saxena, A.

AU - Schaerer, D.

AU - Xie, L.

AU - Zamorani, G.

N1 - © ESO 2021. This is the accepted manuscript version of an article which has been published in final form at https://doi.org/10.1051/0004-6361/202039244

PY - 2021/2/4

Y1 - 2021/2/4

N2 - The estimate of stellar metallicities (Z∗) of high-z galaxies are of paramount importance in order to understand the complexity of dust effects and the reciprocal interrelations among stellar mass, dust attenuation, stellar age, and metallicity. Benefiting from uniquely deep far-UV spectra of > 500 star-forming galaxies at redshifts 2  <   z  <   5 extracted from the VANDELS survey and stacked in bins of stellar mass (M∗) and UV continuum slope (β), we estimate their stellar metallicities Z∗ from stellar photospheric absorption features at 1501 and 1719 Å, which are calibrated with Starburst99 models and are largely unaffected by stellar age, dust, IMF, nebular continuum, or interstellar absorption. Comparing them to photometric-based spectral slopes in the 1250-1750 Å range, we find that the stellar metallicity increases by ∼0.5 dex from β  ∼  -2 to β  ∼  -1 (1 ≲  A1600 ≲  3.2), and a dependence with β holds at fixed UV absolute luminosity MUV and stellar mass up to ∼109.65  M⊙ . As a result, metallicity is a fundamental ingredient for properly rescaling dust corrections based on MUV and M∗. Using the same absorption features, we analyzed the mass-metallicity relation (MZR), and find it to be consistent with the previous VANDELS estimation based on a global fit of the FUV spectra. Similarly, we do not find a significant evolution between z  ∼  2 and z  ∼  3.5. Finally, the slopes of our MZR and Z∗ - β relation are in agreement with the predictions of well-studied semi-analytic models (SAM) of galaxy formation, while some tensions remain concerning the absolute metallicity normalization. The relation between the UV slope and stellar metallicity is fundamental to the exploitation of large volume surveys with next-generation telescopes and for the physical characterization of galaxies in the first billion years of our Universe.

AB - The estimate of stellar metallicities (Z∗) of high-z galaxies are of paramount importance in order to understand the complexity of dust effects and the reciprocal interrelations among stellar mass, dust attenuation, stellar age, and metallicity. Benefiting from uniquely deep far-UV spectra of > 500 star-forming galaxies at redshifts 2  <   z  <   5 extracted from the VANDELS survey and stacked in bins of stellar mass (M∗) and UV continuum slope (β), we estimate their stellar metallicities Z∗ from stellar photospheric absorption features at 1501 and 1719 Å, which are calibrated with Starburst99 models and are largely unaffected by stellar age, dust, IMF, nebular continuum, or interstellar absorption. Comparing them to photometric-based spectral slopes in the 1250-1750 Å range, we find that the stellar metallicity increases by ∼0.5 dex from β  ∼  -2 to β  ∼  -1 (1 ≲  A1600 ≲  3.2), and a dependence with β holds at fixed UV absolute luminosity MUV and stellar mass up to ∼109.65  M⊙ . As a result, metallicity is a fundamental ingredient for properly rescaling dust corrections based on MUV and M∗. Using the same absorption features, we analyzed the mass-metallicity relation (MZR), and find it to be consistent with the previous VANDELS estimation based on a global fit of the FUV spectra. Similarly, we do not find a significant evolution between z  ∼  2 and z  ∼  3.5. Finally, the slopes of our MZR and Z∗ - β relation are in agreement with the predictions of well-studied semi-analytic models (SAM) of galaxy formation, while some tensions remain concerning the absolute metallicity normalization. The relation between the UV slope and stellar metallicity is fundamental to the exploitation of large volume surveys with next-generation telescopes and for the physical characterization of galaxies in the first billion years of our Universe.

KW - Galaxies: abundances

KW - Galaxies: evolution

KW - Galaxies: high-redshift

KW - Galaxies: stellar content

UR - http://www.scopus.com/inward/record.url?scp=85100529531&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/202039244

DO - 10.1051/0004-6361/202039244

M3 - Article

AN - SCOPUS:85100529531

VL - 646

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

SN - 0004-6361

M1 - A39

ER -