The ALMA Spectroscopic Survey in the Hubble Ultra Deep Field (ASPECS)

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The ALMA Spectroscopic Survey in the Hubble Ultra Deep Field (ASPECS) is a 3D survey of gas and dust in distant galaxies. It focuses on the best-studied cosmological deep field, the iconic Hubble Ultra Deep Field. Capitalizing on the unparalleled sensitivity of the Atacama Large Millimeter/sub-millimeter Array (ALMA) the ASPECS data unveil reservoirs of molecular gas and dust in galaxies up to redshifts z~4, when the Universe was only 1/8th of today's age. This interstellar medium constitutes the matter out of which stars form, and it is thus a prerequisite of the star formation process, and thus a key driver for galaxy evolution. The ASPECS data provide the most sensitive image of the sky at 1.2mm available to date, disclosing the emission of dust, which is heated up by the star formation.

Project Summary Table:

Project code	Title	PIs
2016.1.00324.L	ASPECS: The ALMA SPECtral line Survey in the UDF - An ALMA Large Program	Manuel Aravena, Chris Carilli, Roberto Decarli, Fabian Walter
2013.1.00146.S	A Molecular ALMA Deep Field in the UDF (pilot)	Fabian Walter
2013.1.00718.S	An ALMA 1.3 mm spectroscopic survey in the Hubble Ultra Deep Field (pilot)	Manual Aravena

Team Members:

PIs:

Manuel Aravena (Universitad Diego Portales, Chile)

Chris Carilli (National Radio Astronomy Observatory, USA)

Roberto Decarli (INAF-Observatory for Astrophysics and Space Science of Bologna, Italy)

Fabian Walter (Max Planck Institute for Astronomy, Germany)

Co-Is:

Roberto Assef (Universidad Diego Portales, Chile), Roland Bacon (University of Lyon, France), Franz Bauer (Pontificia Universidad Católica, Chile), Frank Bertoldi (Argelander Institute for Astronomy, Germany), Leindert Boogaard (Leiden Observatory, Netherlands), Rychard Bouwens (Leiden Observatory, Netherlands), Thierry Contini (Laboratoire Astrophysique de Toulouse-Tarbes, France), Paulo C. Cortes (Joint ALMA Observatory), Pierre Cox (Intistut d'Astrophysique de Paris, France), Elisabete da Cunha (University of Western Australia, Australia), Emanuele Daddi (Laboratoire AIM, CEA/DSM-CNRS-Université Paris Diderot, France), Tanio Diaz-Santos (Universidad Diego Portales, Chile), David Elbaz (Laboratoire AIM, CEA/DSM-CNRS-Université Paris Diderot, France), Jorge Gonzalez-Lopez (Las Campanas Observatory/Universidad Diego Portales, Chile), Jacqueline Hodge (Leiden Observatory, Netherlands), Hanae Inami (University of Hiroshima, Japan), Rob J. Ivison (Euroean Southern Observatory), Melanie Kaasinen (Max Planck Institute for Astronomy, Germany), Olivier Le Fevre (Laboratoire d’Astrophysique de Marseille, France), Benjamin Magnelli (Argelander Institute for Astronomy, Germany), Marcel Neeleman (Max Planck Institute for Astronomy, Germany), Mladen Novak (Max Planck Institute for Astronomy, Germany), Pascal Oesch (University of Geneva, Switzerland), Gergo Popping (European Southern Observatory), Dominik Riechers (Cornell University, USA), Hans-Walter Rix (Max Planck Institute for Astronomy, Germany), Mark Sargent (Sussex University, United Kingdom), Ian Smail (Durham University, United Kingdom), Rachel Somerville (Flatiron Institute, USA), Mark Swinbank (Durham University, United Kingdom), Bade Uzgil (CalTech, USA), Paul van der Werf (Leiden Observatory, Netherlands), Jeff Wagg (Square Kilometer Array Observatory), Axel Weiss (Max Planck Institute for Radioastronomy, Germany), Lutz Wisotzky (Leibniz Institute for Astrophysics, Germany)

ASPEC Publications:

ASPECS Large Program

Inami H., Decarli R., Walter F., et al. "The ALMA Spectroscopic Survey in the HUDF: Constraining the Molecular Content at log (M∗/M ) ∼ 9.5 with CO stacking of MUSE-detected z∼1.5 Galaxies", ApJ accepted (link)

Decarli R., Aravena M., Boogaard L., et al. "The ALMA Spectroscopic Survey in the HUDF: Multi-band constraints on line luminosity functions and the cosmic density of molecular gas", 2020, ApJ accepted (link)

Boogaard L., van der Werf P., Weiss A., et al. "The ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: CO excitation and atomic carbon in star-forming galaxies at z=1-3", 2020, ApJ accepted (link)

Bouwens R., Gonzalez-Lopez J., Aravena M., et al. "The ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: The infrared excess of z=1.5-10 star-forming galaxies and the implied high-redshift star formation history", 2020, ApJ accepted (link)

Walter F., Carilli C., Neeleman M., et al. "The Evolution of the Baryons Associated with Galaxies Averaged over Cosmic Time and Space", ApJ accepted (link)

Aravena M., Boogaard L., Gónzalez-López J., et al. "The ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: The nature of the faintest dusty star-forming galaxies", 2020, ApJ accepted, arXiv:2006.04284 (link)

Kaasinen M., Walter F., Novak M., et al. "A Comparison of the Stellar, CO, and Dust-continuum Emission from Three Star-forming HUDF Galaxies at z ∼ 2", 2020, ApJ, 899, 37 (link)

Riechers D.A., Boogaard L.A., Decarli R., et al. "VLA-ALMA Spectroscopic Survey in the Hubble Ultra Deep Field (VLASPECS): Total Cold Gas Masses and CO Line Ratios for z=2-3 "Main Sequence" Galaxies", 2020, ApJ, 896, L21 (link)

Magnelli B., Boogaard L., Decarli R., et al. "The ALMA Spectroscopic Survey in the HUDF: The Cosmic Dust and Gas Mass Densities in Galaxies up to z∼3", 2020, ApJ, 892, 66 (link)

Gonzalez-Lopez J., Novak M., Decarli R., et al. "The ALMA Spectroscopic Survey in the HUDF: Deep 1.2 mm continuum number counts", 2020, ApJ, 897, 91 (link)

Popping G., Walter F., Behroozi P., et al. "The ALMA Spectroscopic Survey in the HUDF: A model to explain observed 1.1 and 0.85 millimeter dust continuum number counts", 2020, ApJ, 891, 135 (link)

Uzgil B.D., Carilli C., Lidz A., et al. "The ALMA Spectroscopic Survey in the HUDF: Constraining Cumulative CO Emission at 1 ≲ z ≲ 4 with Power Spectrum Analysis of ASPECS LP Data from 84 to 115 GHz", 2019, ApJ, 887, 37 (link)

Boogaard L., Decarli R., Gonzalez-Lopez J., et al.: "The ALMA Spectroscopic Survey in the HUDF: Nature and physical properties of gas-mass selected galaxies using MUSE spectroscopy", 2019, ApJ, 882, 140 (link)

The ALMA Spectroscopic Survey in the HUDF: CO emission lines and 3 mm continuum sources", 2019, ApJ, 882, 139 (link)

Decarli R., Walter F., Gonzalez-Lopez J., et al.: "The ALMA Spectroscopic Survey in the HUDF: CO luminosity functions and the molecular gas content of galaxies through cosmic history", 2019, ApJ, 882, 138 (link)

Popping G., Pillepich A., Somerville R., et al.: "The ALMA Spectroscopic Survey in the HUDF: the molecular gas content of galaxies and tensions with IllustrisTNG and the Santa Cruz SAM", 2019, ApJ, 882, 137 (link)

Aravena M., Decarli R., Gonzalez-Lopez J., et al.: "The ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: Evolution of the Molecular Gas in CO-selected Galaxies", 2019, ApJ, 882, 136 (link)

ASPECS Pilot

Carilli C., Chluba J., Decarli R., et al.: "ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: implications for spectral line intensity mapping at millimeter wavelengths and CMB spectral distortions", 2016, ApJ, 833, 73 (link)

Bouwens R., Aravena M., Decarli R., et al.: "ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: The Infrared Excess of UV-selected z=2-10 galaxies as a function of UV-continuum Slope and Stellar Mass", 2016, ApJ, 833, 72 (link)

Aravena M., Decarli R., Walter F., et al.: "ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: Search for [CII] line and dust emission in 6 2016, ApJ, 833, 71 (link)

Decarli R., Walter F., Aravena M., et al.: "ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: Molecular gas reservoirs in high-redshift galaxies", 2016, ApJ, 833, 70 (link)

Decarli R., Walter F., Aravena M., et al.: "ALMA spectroscopic survey in the Hubble Ultra Deep Field: CO luminosity functions and the evolution of the cosmic density of molecular gas", 2016, ApJ, 833, 69 (link)

Aravena M., Decarli R., Walter F., et al.: "ALMA spectroscopic survey in the Hubble Ultra Deep Field: Continuum number counts, resolved 1.2-mm extragalactic background, and properties of the faintest dusty star forming galaxies", 2016, ApJ, 833, 68 (link)

Walter F., Decarli R., Aravena M., et al. 2016: "ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: Survey Description", 2016, ApJ, 833, 67 (link)

Press releases / Outreach

ESO Messenger article (link)

Main Deliveries:

Available are the UV data of the full band 3 and band 6 frequency scans / mosaics in the Hubble Ultra Deep Field, and imaged cubes at different resolutions, as explained in the README file for each band.

This data can be obtained in two ways:

download the full tarballs for each of the two bands: band 6 (size: 902Gb!) and band 3 (size: 388 Gb!)
download individual files from the full tarballs, where one should first consult the README file to find out what each file contains: