ALPINE (The ALMA Large Program to Investigate CII at Early Times)
(PIs: O. LeFèvre, A. Faisst, M. Bethermin, P. Capak, P. Cassata, D. Schaerer, J. Silverman, L. Yan)
ALPINE is a 70h cycle 5 ALMA program (2017.1.00428.L) to study the gas and dust properties of young galaxies during the early growth phase at redshifts z = 4-6. ALPINE observes in total 122 main-sequence galaxies with spectroscopic redshifts between 4.4 to 5.9 in COSMOS (108) and the GOODS-S/ECDFS (14) at a rest-frame wavelength of 158 micro-meter and measures their singly ionized Carbon emission (C+) as well as their far-infrared (FIR) continuum. The chosen galaxies are representative of the Universe at these times and therefore ALPINE provides a representative picture of their physical properties.
The main science questions addressed with ALPINE are:
- What are the mechanisms that fuel the initial growth of galaxies? - ALPINE gives accurate measurements of the gas properties and gas fractions of galaxies at z>4.
- What are the ISM properties of galaxies in the early Universe and how do they compare to the present day galaxies? - ALPINE accurately constrains the dust properties of these galaxies.
In addition to this, ALPINE provides a lasting legacy in the data-rich ECDFS and COSMOS areas. These data will pave the way for detailed follow-up observations, e.g., with ALMA at higher spatial resolution, and provide a reference sample for studies with future facilities like JWST.
Data is being taken right now and will be finished in 2018.
Contact: A. Faisst (North America PI) at afaisst[at]ipac.caltech.edu
Bolometer observations (10-35'' resolution)
- MAMBO (0.11 deg2, Bertoldi et al. 2007)
- AzTEC (0.15 deg2, Scott et al. 2008; 0.72 sq deg, Aretxaga et al. 2011)
- SCUBA-2 (0.12 deg2, Casey et al. 2013)
- Bolocam (0.27 deg2, Aguirre et al. 2011)
- LABOCA (0.7 deg2, Navarrete et al. in prep)
- GISMO (0.16 deg2, Karim et al. in prep)
See the field coverage plot and table below for a summary of observation properties.
Interferometric follow-up (0.35-3'' resolution)
- ALMA (programs underway by various PIs including Aravena, Karim, Capak, Carilli, Scoville, Sheth)
Image: The field coverage of the various sub-millimeter surveys within the COSMOS region.
Summary of parameters for sub-millimeter bolometric observations in the COSMOS field.
|Telescope/Instrument||Band||Depth (1σ)||Area (deg2)||Reference|
|JCMT/AzTEC||1.1 mm||1.3 mJy/beam||0.15||Scott et al. (2008)|
|ASTE/AzTEC||1.1 mm||1.26 mJy/beam||0.72||Aretxaga et al. (2011)|
|LABOCA||0.87 mm||1.68 mJy/beam||0.75||Navarrete et al. (in prep)|
|MAMBO||1.2 mm||1.0 mJy/beam||0.11||Bertoldi et al. (2007)|
|JCMT/SCUBA-2||0.45 mm||4.13 mJy/beam||0.11||Casey et al. (2013)|
|JCMT/SCUBA-2||0.85 mm||0.8 mJy/beam||0.11||Casey et al. (2013)|
|CSO-Bolocam||1.1 mm||1.9 mJy/beam||0.27||Aguirre et al. (2011)|
0.23 (0.3) mJy/beam
Karim et al. (in prep)