• DOI:10.1051/0004-6361/202037649
• Corpus ID: 211020768

The ALPINE-ALMA [CII] survey: Data processing, catalogs, and statistical source properties

@article{Bthermin2020TheA,
  title={The ALPINE-ALMA [CII] survey: Data processing, catalogs, and statistical source properties},
  author={Matthieu B{\'e}thermin and Yoshinobu Fudamoto and Michele Ginolfi and Federica Loiacono and Yana Khusanova and Peter Capak and Paolo Cassata and Andreas L. Faisst and Olivier Le F{\`e}vre and Daniel Schaerer and John D. Silverman and L. Yan and Ricardo Amor{\'i}n and Sandro Bardelli and M{\'e}d{\'e}ric Boquien and Alessandro Cimatti and Iary Davidzon and Miroslava Dessauges-Zavadsky and Seiji Fujimoto and Carlotta Gruppioni and Nimish P. Hathi and Edo Ibar and G. C. Jones and Anton M. Koekemoer and Guilaine Lagache and Brian C. Lemaux and C. Moreau and Pascal A. Oesch and Francesca Pozzi and Dominik A. Riechers and Margherita Talia and Sune Toft and Livia Vallini and D. Vergani and Gianni Zamorani and Elena Zucca},
  journal={Astronomy \& Astrophysics},
  year={2020}
}

• M. Béthermin, Y. Fudamoto, +33 authors E. Zucca
• Published 3 February 2020
• Physics
• Astronomy & Astrophysics

The Atacama Large Millimeter Array (ALMA) Large Program to INvestigate [CII] at Early times (ALPINE) targets the [CII] 158 μm line and the far-infrared continuum in 118 spectroscopically confirmed star-forming galaxies between z = 4.4 and z = 5.9. It represents the first large [CII] statistical sample built in this redshift range. We present details regarding the data processing and the construction of the catalogs. We detected 23 of our targets in the continuum. To derive accurate infrared luminosities and obscured star formation rates (SFRs), we measured the conversion factor from the ALMA 158 μm rest-frame dust continuum luminosity to the total infrared luminosity (LIR) after constraining the dust spectral energy distribution by stacking a photometric sample similar to ALPINE in ancillary single-dish far-infrared data. We found that our continuum detections have a median LIR of 4.4 × 1011 L⊙. We also detected 57 additional continuum sources in our ALMA pointings. They are at a lower redshift than the ALPINE targets, with a mean photometric redshift of 2.5 ± 0.2. We measured the 850 μm number counts between 0.35 and 3.5 mJy, thus improving the current interferometric constraints in this flux density range. We found a slope break in the number counts around 3 mJy with a shallower slope below this value. More than 40% of the cosmic infrared background is emitted by sources brighter than 0.35 mJy. Finally, we detected the [CII] line in 75 of our targets. Their median [CII] luminosity is 4.8 × 108 L⊙ and their median full width at half maximum is 252 km s−1. After measuring the mean obscured SFR in various [CII] luminosity bins by stacking ALPINE continuum data, we find a good agreement between our data and the local and predicted SFR–L[CII] relations.