Extensive Lensing Survey of Optical and Near-infrared Dark Objects (El Sonido) : HST H-faint Galaxies behind 101 Lensing Clusters. Combes, F., Sun, F., Egami, E., Pérez-González, P. G., Smail, I., Caputi, K. I., Bauer, F. E., Rawle, T. D., Fujimoto, S., Kohno, K., Dudzevičiūt\.e, U. e, Atek, H., Bianconi, M., Chapman, S. C., Jauzac, M., Jolly, J., Koekemoer, A. M., Magdis, G. E., Rodighiero, G., Rujopakarn, W., Schaerer, D., Steinhardt, C. L., Werf, P. V. d., Walth, G. L., & Weaver, J. R. The Astrophysical Journal, 922(2):114, November, 2021. https://hal.sorbonne-universite.fr/hal-03463041 Publisher : American Astronomical Societydoi abstract bibtex We present a Spitzer/IRAC survey of H-faint (H 160 ≳ 26.4, \textless 5σ) sources in 101 lensing cluster fields. Across a CANDELS/Wide-like survey area of ∼648 arcmin2 (effectively ∼221 arcmin2 in the source plane), we have securely discovered 53 sources in the IRAC Channel-2 band (CH2, 4.5 μm; median CH2 = 22.46 ± 0.11 AB mag) that lack robust HST/WFC3-IR F160W counterparts. The most remarkable source in our sample, namely ES-009 in the field of Abell 2813, is the brightest H-faint galaxy at 4.5 μm known so far (CH2 = 20.48 ± 0.03 AB mag). We show that the H-faint sources in our sample are massive (median M star = 1010.3±0.3 M ⊙), star-forming (median star formation rate M ⊙ yr−1), and dust-obscured (A V = 2.6 ± 0.3) galaxies around a median photometric redshift of z = 3.9 ± 0.4. The stellar continua of 14 H-faint galaxies can be resolved in the CH2 band, suggesting a median circularized effective radius (R e,circ; lensing corrected) of 1.9 ± 0.2 kpc and \textless1.5 kpc for the resolved and whole samples, respectively. This is consistent with the sizes of massive unobscured galaxies at z ∼ 4, indicating that H-faint galaxies represent the dusty tail of the distribution of a wider galaxy population. Comparing with the ALMA dust continuum sizes of similar galaxies reported previously, we conclude that the heavy dust obscuration in H-faint galaxies is related to the compactness of both stellar and dust continua (R e,circ ∼ 1 kpc). These H-faint galaxies make up % of the galaxies in the stellar-mass range of 1010 − 1011.2 M ⊙ at z = 3 ∼ 5, contributing to % of the cosmic star formation rate density in this epoch and likely tracing the early phase of massive galaxy formation.
@article{combes_extensive_2021,
title = {Extensive {Lensing} {Survey} of {Optical} and {Near}-infrared {Dark} {Objects} ({El} {Sonido}) : {HST} {H}-faint {Galaxies} behind 101 {Lensing} {Clusters}},
volume = {922},
issn = {0004-637X},
shorttitle = {Extensive {Lensing} {Survey} of {Optical} and {Near}-infrared {Dark} {Objects} ({El} {Sonido})},
doi = {https://doi.org/10.3847/1538-4357/ac2578},
abstract = {We present a Spitzer/IRAC survey of H-faint (H 160 ≳ 26.4, {\textless} 5σ) sources in 101 lensing cluster fields. Across a CANDELS/Wide-like survey area of ∼648 arcmin2 (effectively ∼221 arcmin2 in the source plane), we have securely discovered 53 sources in the IRAC Channel-2 band (CH2, 4.5 μm; median CH2 = 22.46 ± 0.11 AB mag) that lack robust HST/WFC3-IR F160W counterparts. The most remarkable source in our sample, namely ES-009 in the field of Abell 2813, is the brightest H-faint galaxy at 4.5 μm known so far (CH2 = 20.48 ± 0.03 AB mag). We show that the H-faint sources in our sample are massive (median M star = 1010.3±0.3 M ⊙), star-forming (median star formation rate M ⊙ yr−1), and dust-obscured (A V = 2.6 ± 0.3) galaxies around a median photometric redshift of z = 3.9 ± 0.4. The stellar continua of 14 H-faint galaxies can be resolved in the CH2 band, suggesting a median circularized effective radius (R e,circ; lensing corrected) of 1.9 ± 0.2 kpc and {\textless}1.5 kpc for the resolved and whole samples, respectively. This is consistent with the sizes of massive unobscured galaxies at z ∼ 4, indicating that H-faint galaxies represent the dusty tail of the distribution of a wider galaxy population. Comparing with the ALMA dust continuum sizes of similar galaxies reported previously, we conclude that the heavy dust obscuration in H-faint galaxies is related to the compactness of both stellar and dust continua (R e,circ ∼ 1 kpc). These H-faint galaxies make up \% of the galaxies in the stellar-mass range of 1010 − 1011.2 M ⊙ at z = 3 ∼ 5, contributing to \% of the cosmic star formation rate density in this epoch and likely tracing the early phase of massive galaxy formation.},
language = {en},
number = {2},
urldate = {2021-12-13},
journal = {The Astrophysical Journal},
author = {Combes, Francoise and Sun, Fengwu and Egami, Eiichi and Pérez-González, Pablo G. and Smail, Ian and Caputi, Karina I. and Bauer, Franz E. and Rawle, Timothy D. and Fujimoto, Seiji and Kohno, Kotaro and Dudzevičiūt{\textbackslash}.e, Ugn{\textbackslash} e and Atek, Hakim and Bianconi, Matteo and Chapman, Scott C. and Jauzac, Mathilde and Jolly, Jean-Baptiste and Koekemoer, Anton M. and Magdis, Georgios E. and Rodighiero, Giulia and Rujopakarn, Wiphu and Schaerer, Daniel and Steinhardt, Charles L. and Werf, Paul Van der and Walth, Gregory L. and Weaver, John R.},
month = nov,
year = {2021},
note = {https://hal.sorbonne-universite.fr/hal-03463041
Publisher : American Astronomical Society},
keywords = {COMBES Françoise, Chaires, Document sous DOI (Digital Object Identifier), Sous embargo, Texte intégral (accès ouvert), web-galaxies-cosmologie},
pages = {114},
}
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R."],"bibdata":{"bibtype":"article","type":"article","title":"Extensive Lensing Survey of Optical and Near-infrared Dark Objects (El Sonido) : HST H-faint Galaxies behind 101 Lensing Clusters","volume":"922","issn":"0004-637X","shorttitle":"Extensive Lensing Survey of Optical and Near-infrared Dark Objects (El Sonido)","doi":"https://doi.org/10.3847/1538-4357/ac2578","abstract":"We present a Spitzer/IRAC survey of H-faint (H 160 ≳ 26.4, \\textless 5σ) sources in 101 lensing cluster fields. Across a CANDELS/Wide-like survey area of ∼648 arcmin2 (effectively ∼221 arcmin2 in the source plane), we have securely discovered 53 sources in the IRAC Channel-2 band (CH2, 4.5 μm; median CH2 = 22.46 ± 0.11 AB mag) that lack robust HST/WFC3-IR F160W counterparts. The most remarkable source in our sample, namely ES-009 in the field of Abell 2813, is the brightest H-faint galaxy at 4.5 μm known so far (CH2 = 20.48 ± 0.03 AB mag). We show that the H-faint sources in our sample are massive (median M star = 1010.3±0.3 M ⊙), star-forming (median star formation rate M ⊙ yr−1), and dust-obscured (A V = 2.6 ± 0.3) galaxies around a median photometric redshift of z = 3.9 ± 0.4. The stellar continua of 14 H-faint galaxies can be resolved in the CH2 band, suggesting a median circularized effective radius (R e,circ; lensing corrected) of 1.9 ± 0.2 kpc and \\textless1.5 kpc for the resolved and whole samples, respectively. This is consistent with the sizes of massive unobscured galaxies at z ∼ 4, indicating that H-faint galaxies represent the dusty tail of the distribution of a wider galaxy population. Comparing with the ALMA dust continuum sizes of similar galaxies reported previously, we conclude that the heavy dust obscuration in H-faint galaxies is related to the compactness of both stellar and dust continua (R e,circ ∼ 1 kpc). These H-faint galaxies make up % of the galaxies in the stellar-mass range of 1010 − 1011.2 M ⊙ at z = 3 ∼ 5, contributing to % of the cosmic star formation rate density in this epoch and likely tracing the early phase of massive galaxy formation.","language":"en","number":"2","urldate":"2021-12-13","journal":"The Astrophysical Journal","author":[{"propositions":[],"lastnames":["Combes"],"firstnames":["Francoise"],"suffixes":[]},{"propositions":[],"lastnames":["Sun"],"firstnames":["Fengwu"],"suffixes":[]},{"propositions":[],"lastnames":["Egami"],"firstnames":["Eiichi"],"suffixes":[]},{"propositions":[],"lastnames":["Pérez-González"],"firstnames":["Pablo","G."],"suffixes":[]},{"propositions":[],"lastnames":["Smail"],"firstnames":["Ian"],"suffixes":[]},{"propositions":[],"lastnames":["Caputi"],"firstnames":["Karina","I."],"suffixes":[]},{"propositions":[],"lastnames":["Bauer"],"firstnames":["Franz","E."],"suffixes":[]},{"propositions":[],"lastnames":["Rawle"],"firstnames":["Timothy","D."],"suffixes":[]},{"propositions":[],"lastnames":["Fujimoto"],"firstnames":["Seiji"],"suffixes":[]},{"propositions":[],"lastnames":["Kohno"],"firstnames":["Kotaro"],"suffixes":[]},{"propositions":[],"lastnames":["Dudzevičiūt\\.e"],"firstnames":["Ugn\\","e"],"suffixes":[]},{"propositions":[],"lastnames":["Atek"],"firstnames":["Hakim"],"suffixes":[]},{"propositions":[],"lastnames":["Bianconi"],"firstnames":["Matteo"],"suffixes":[]},{"propositions":[],"lastnames":["Chapman"],"firstnames":["Scott","C."],"suffixes":[]},{"propositions":[],"lastnames":["Jauzac"],"firstnames":["Mathilde"],"suffixes":[]},{"propositions":[],"lastnames":["Jolly"],"firstnames":["Jean-Baptiste"],"suffixes":[]},{"propositions":[],"lastnames":["Koekemoer"],"firstnames":["Anton","M."],"suffixes":[]},{"propositions":[],"lastnames":["Magdis"],"firstnames":["Georgios","E."],"suffixes":[]},{"propositions":[],"lastnames":["Rodighiero"],"firstnames":["Giulia"],"suffixes":[]},{"propositions":[],"lastnames":["Rujopakarn"],"firstnames":["Wiphu"],"suffixes":[]},{"propositions":[],"lastnames":["Schaerer"],"firstnames":["Daniel"],"suffixes":[]},{"propositions":[],"lastnames":["Steinhardt"],"firstnames":["Charles","L."],"suffixes":[]},{"propositions":[],"lastnames":["Werf"],"firstnames":["Paul","Van","der"],"suffixes":[]},{"propositions":[],"lastnames":["Walth"],"firstnames":["Gregory","L."],"suffixes":[]},{"propositions":[],"lastnames":["Weaver"],"firstnames":["John","R."],"suffixes":[]}],"month":"November","year":"2021","note":"https://hal.sorbonne-universite.fr/hal-03463041 Publisher : American Astronomical Society","keywords":"COMBES Françoise, Chaires, Document sous DOI (Digital Object Identifier), Sous embargo, Texte intégral (accès ouvert), web-galaxies-cosmologie","pages":"114","bibtex":"@article{combes_extensive_2021,\n\ttitle = {Extensive {Lensing} {Survey} of {Optical} and {Near}-infrared {Dark} {Objects} ({El} {Sonido}) : {HST} {H}-faint {Galaxies} behind 101 {Lensing} {Clusters}},\n\tvolume = {922},\n\tissn = {0004-637X},\n\tshorttitle = {Extensive {Lensing} {Survey} of {Optical} and {Near}-infrared {Dark} {Objects} ({El} {Sonido})},\n\tdoi = {https://doi.org/10.3847/1538-4357/ac2578},\n\tabstract = {We present a Spitzer/IRAC survey of H-faint (H 160 ≳ 26.4, {\\textless} 5σ) sources in 101 lensing cluster fields. Across a CANDELS/Wide-like survey area of ∼648 arcmin2 (effectively ∼221 arcmin2 in the source plane), we have securely discovered 53 sources in the IRAC Channel-2 band (CH2, 4.5 μm; median CH2 = 22.46 ± 0.11 AB mag) that lack robust HST/WFC3-IR F160W counterparts. The most remarkable source in our sample, namely ES-009 in the field of Abell 2813, is the brightest H-faint galaxy at 4.5 μm known so far (CH2 = 20.48 ± 0.03 AB mag). We show that the H-faint sources in our sample are massive (median M star = 1010.3±0.3 M ⊙), star-forming (median star formation rate M ⊙ yr−1), and dust-obscured (A V = 2.6 ± 0.3) galaxies around a median photometric redshift of z = 3.9 ± 0.4. The stellar continua of 14 H-faint galaxies can be resolved in the CH2 band, suggesting a median circularized effective radius (R e,circ; lensing corrected) of 1.9 ± 0.2 kpc and {\\textless}1.5 kpc for the resolved and whole samples, respectively. This is consistent with the sizes of massive unobscured galaxies at z ∼ 4, indicating that H-faint galaxies represent the dusty tail of the distribution of a wider galaxy population. Comparing with the ALMA dust continuum sizes of similar galaxies reported previously, we conclude that the heavy dust obscuration in H-faint galaxies is related to the compactness of both stellar and dust continua (R e,circ ∼ 1 kpc). 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