Extensive Lensing Survey of Optical and Near-infrared Dark Objects (El Sonido): HST H-faint Galaxies behind 101 Lensing Clusters
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We present a Spitzer/IRAC survey of H-faint (H-160 greater than or similar to 26.4, < 5 sigma) sources in 101 lensing cluster fields. Across a CANDELS/Wide-like survey area of similar to 648 arcmin(2) (effectively similar to 221 arcmin(2) in the source plane), we have securely discovered 53 sources in the IRAC Channel-2 band (CH2, 4.5 mu m; 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 mu m 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 = 10 10.3 +/- 0.3 M-circle dot, star-forming (median star formation rate =1001 M-circle dot 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,R-circ; lensing corrected) of 1.9 +/- 0.2 kpc and
Original language | English |
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Article number | 114 |
Journal | Astrophysical Journal |
Volume | 922 |
Issue number | 2 |
Number of pages | 19 |
ISSN | 0004-637X |
DOIs | |
Publication status | Published - 25 Dec 2021 |
- HUBBLE-FRONTIER-FIELDS, BRIGHTEST SUBMILLIMETER SOURCE, OBSCURED STAR-FORMATION, 26 ARCMIN(2) SURVEY, MASSIVE GALAXIES, ALMA SURVEY, DEEP FIELD, PHOTOMETRIC REDSHIFTS, FORMING GALAXIES, STELLAR MASSES
Research areas
Links
- https://arxiv.org/pdf/2109.01751.pdf
Submitted manuscript
ID: 286311835