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Ian Smail's Outputs (526)

The ALMA Spectroscopic Survey in the HUDF: The Cosmic Dust and Gas Mass Densities in Galaxies up to z ∼ 3 (2020)
Journal Article
Magnelli, B., Boogaard, L., Decarli, R., Gónzalez-López, J., Novak, M., Popping, G., Smail, I., Walter, F., Aravena, M., Assef, R. J., Bauer, F. E., Bertoldi, F., Carilli, C., Cortes, P. C., Cunha, E. D., Daddi, E., Díaz-Santos, T., Inami, H., Ivison, R. J., Fèvre, O. L., …Weiss, A. (2020). The ALMA Spectroscopic Survey in the HUDF: The Cosmic Dust and Gas Mass Densities in Galaxies up to z ∼ 3. Astrophysical Journal, 892(1), Article 66. https://doi.org/10.3847/1538-4357/ab7897

Using the deepest 1.2 mm continuum map to date in the Hubble Ultra Deep Field, which was obtained as part of the ALMA Spectroscopic Survey (ASPECS) large program, we measure the cosmic density of dust and implied gas (H2+H I) mass in galaxies as a fu... Read More about The ALMA Spectroscopic Survey in the HUDF: The Cosmic Dust and Gas Mass Densities in Galaxies up to z ∼ 3.

Extended Hα over compact far-infrared continuum in dusty submillimeter galaxies (2020)
Journal Article
Chen, C.-C., Harrison, C., Smail, I., Swinbank, A., Turner, O., Wardlow, J., Brandt, W., Calistro Rivera, G., Chapman, S., Cooke, E., Dannerbauer, H., Dunlop, J., Farrah, D., Michałowski, M., Schinnerer, E., Simpson, J., Thomson, A., & van der Werf, P. (2020). Extended Hα over compact far-infrared continuum in dusty submillimeter galaxies. Astronomy & Astrophysics, 635, Article A119. https://doi.org/10.1051/0004-6361/201936286

By using data from the Atacama Large Millimeter/submillimeter Array and near-infrared (NIR) integral field spectrographs, including both Spectrograph for INtegral Field Observations in the Near Infrared and K-band Multi Object Spectrograph on the Ver... Read More about Extended Hα over compact far-infrared continuum in dusty submillimeter galaxies.

SCUBA-2 Ultra Deep Imaging EAO Survey (Studies). III. Multiwavelength Properties, Luminosity Functions, and Preliminary Source Catalog of 450 μm Selected Galaxies (2020)
Journal Article
Lim, C.-F., Wang, W.-H., Smail, I., Scott, D., Chen, C.-C., Chang, Y.-Y., Simpson, J. M., Toba, Y., Shu, X., Clements, D., Greenslade, J., Ao, Y., Babul, A., Birkin, J., Chapman, S. C., Cheng, T.-A., Cho, B. S., Dannerbauer, H., Dudzevičiūtė, U., Dunlop, J., …Wang, T. (2020). SCUBA-2 Ultra Deep Imaging EAO Survey (Studies). III. Multiwavelength Properties, Luminosity Functions, and Preliminary Source Catalog of 450 μm Selected Galaxies. Astrophysical Journal, 889(2), Article 80. https://doi.org/10.3847/1538-4357/ab607f

We construct a SCUBA-2 450 μm map in the COSMOS field that covers an area of 300 arcmin2 and reaches a 1σ noise level of 0.65 mJy in the deepest region. We extract 256 sources detected at 450 μm with signal-to-noise ratios >4.0 and analyze the physic... Read More about SCUBA-2 Ultra Deep Imaging EAO Survey (Studies). III. Multiwavelength Properties, Luminosity Functions, and Preliminary Source Catalog of 450 μm Selected Galaxies.

An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field: Dust attenuation in high-redshift Lyman break Galaxies (2020)
Journal Article
Koprowski, M., Coppin, K., E. Geach, J., Dudzevičiūtė, U., Smail, I., Almaini, O., An, F., Blain, A., Chapman, S., Chen, C.-C., Conselice, C., Dunlop, J., Farrah, D., Gullberg, B., Hartley, W., Ivison, R., Karska, A., Maltby, D., MaÅek, K., Michałowski, M., …Whitaker, K. (2020). An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field: Dust attenuation in high-redshift Lyman break Galaxies. Monthly Notices of the Royal Astronomical Society, 492(4), 4927-4944. https://doi.org/10.1093/mnras/staa160

We analyse 870μm Atacama Large Millimetre Array (ALMA) dust continuum detections of 41 canonically-selected z ≃ 3 Lyman-break galaxies (LBGs), as well as 209 ALMA-undetected LBGs, in follow-up of SCUBA-2 mapping of the UKIDSS Ultra Deep Survey (UDS)... Read More about An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field: Dust attenuation in high-redshift Lyman break Galaxies.

VIS3COS (2020)
Journal Article
Paulino-Afonso, A., Sobral, D., Darvish, B., Ribeiro, B., Smail, I., Best, P., Stroe, A., & Cairns, J. (2020). VIS3COS. Astronomy & Astrophysics, 633, https://doi.org/10.1051/0004-6361/201834244

We present spectroscopic observations of 466 galaxies in and around a superstructure at z ∼ 0.84 targeted by the VIMOS Spectroscopic Survey of a Supercluster in the COSMOS field (VIS3COS). We use [OII]λ3727, Hδ, and Dn4000 to trace recent, medium-, a... Read More about VIS3COS.

From peculiar morphologies to Hubble-type spirals: the relation between galaxy dynamics and morphology in star-forming galaxies at z ∼ 1.5 (2019)
Journal Article
Gillman, S., Tiley, A., Swinbank, A., Harrison, C., Smail, I., Dudzevičiūtė, U., Sharples, R., Cortese, L., Obreschkow, D., Bower, R., Theuns, T., Cirasuolo, M., Fisher, D., Glazebrook, K., Ibar, E., Mendel, J., & Sweet, S. (2020). From peculiar morphologies to Hubble-type spirals: the relation between galaxy dynamics and morphology in star-forming galaxies at z ∼ 1.5. Monthly Notices of the Royal Astronomical Society, 492(1), 1492-1512. https://doi.org/10.1093/mnras/stz3576

We present an analysis of the gas dynamics of star–forming galaxies at z ∼ 1.5 using data from the KMOS Galaxy Evolution Survey (KGES). We quantify the morphology of the galaxies using HSTCANDELS imaging parametrically and non-parametrically. We comb... Read More about From peculiar morphologies to Hubble-type spirals: the relation between galaxy dynamics and morphology in star-forming galaxies at z ∼ 1.5.

Multi-wavelength Properties of Radio- and Machine-learning-identified Counterparts to Submillimeter Sources in S2COSMOS (2019)
Journal Article
Xia An, F., Simpson, J., Smail, I., Swinbank, A., Ma, C., Liu, D., Lang, P., Schinnerer, E., Karim, A., Magnelli, B., Leslie, S., Bertoldi, F., Chen, C.-C., Geach, J., Matsuda, Y., Stach, S., Wardlow, J., Gullberg, B., Ivison, R., Ao, Y., …Smith, D. (2019). Multi-wavelength Properties of Radio- and Machine-learning-identified Counterparts to Submillimeter Sources in S2COSMOS. Astrophysical Journal, 886(1), Article 48. https://doi.org/10.3847/1538-4357/ab4d53

We identify multi-wavelength counterparts to 1147 submillimeter sources from the S2COSMOS SCUBA-2 survey of the COSMOS field by employing a recently developed radio+machine-learning method trained on a large sample of Atacama Large Millimeter/submill... Read More about Multi-wavelength Properties of Radio- and Machine-learning-identified Counterparts to Submillimeter Sources in S2COSMOS.

An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field: High-resolution dust continuum morphologies and the link between sub-millimetre galaxies and spheroid formation (2019)
Journal Article
Gullberg, B., Smail, I., Swinbank, A., Dudzevičiūtė, U., Stach, S., Thomson, A., Almaini, O., Chen, C., Conselice, C., Cooke, E., Farrah, D., Ivison, R., Maltby, D., Michałowski, M., Simpson, J., Scott, D., Wardlow, J., & Weiss, A. (2019). An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field: High-resolution dust continuum morphologies and the link between sub-millimetre galaxies and spheroid formation. Monthly Notices of the Royal Astronomical Society, 490(4), 4956-4974. https://doi.org/10.1093/mnras/stz2835

We present an analysis of the morphology and profiles of the dust continuum emission in 153 bright sub-millimetre galaxies (SMGs) detected with ALMA at signal to noise ratios of >8 in high-resolution 0′′.18 (∼1 kpc) 870 μm maps. We measure sizes, sha... Read More about An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field: High-resolution dust continuum morphologies and the link between sub-millimetre galaxies and spheroid formation.

The MUSE Ultra Deep Field (MUDF). II. Survey design and the gaseous properties of galaxy groups at 0.5 < z < 1.5 (2019)
Journal Article
Fossati, M., Fumagalli, M., Lofthouse, E., D’Odorico, V., Lusso, E., Cantalupo, S., Cooke, R., Cristiani, S., Haardt, F., Morris, S., Peroux, C., Prichard, L., Rafelski, M., Smail, I., & Theuns, T. (2019). The MUSE Ultra Deep Field (MUDF). II. Survey design and the gaseous properties of galaxy groups at 0.5 < z < 1.5. Monthly Notices of the Royal Astronomical Society, 490(1), 1451-1469. https://doi.org/10.1093/mnras/stz2693

We present the goals, design, and first results of the MUSE Ultra Deep Field (MUDF) survey, a large programme using the Multi Unit Spectroscopic Explorer (MUSE) instrument at the ESO Very Large Telescope. The MUDF survey is collecting ≈150 h on-sourc... Read More about The MUSE Ultra Deep Field (MUDF). II. Survey design and the gaseous properties of galaxy groups at 0.5 < z < 1.5.

Gas filaments of the cosmic web located around active galaxies in a protocluster (2019)
Journal Article
Umehata, H., Fumagalli, M., Smail, I., Matsuda, Y., Swinbank, A., Cantalupo, S., Sykes, C., Ivison, R., Steidel, C., Shapley, A., Vernet, J., Yamada, T., Tamura, Y., Kubo, M., Nakanishi, K., Kajisawa, M., Hatsukade, B., & Kohno, K. (2019). Gas filaments of the cosmic web located around active galaxies in a protocluster. Science, 366(6461), 97-100. https://doi.org/10.1126/science.aaw5949

Cosmological simulations predict the Universe contains a network of intergalactic gas filaments, within which galaxies form and evolve. However, the faintness of any emission from these filaments has limited tests of this prediction. We report the de... Read More about Gas filaments of the cosmic web located around active galaxies in a protocluster.

Radio Spectra and Sizes of Atacama Large Millimeter/submillimeter Array-identified Submillimeter Galaxies: Evidence of Age-related Spectral Curvature and Cosmic-Ray Diffusion? (2019)
Journal Article
Thomson, A., Smail, I., Swinbank, A., Simpson, J., Arumugam, V., Stach, S., Murphy, E., Rujopakarn, W., Almaini, O., An, F., Blain, A., Chen, C., Cooke, E., Dudzevičiūtė, U., Edge, A., Farrah, D., Gullberg, B., Hartley, W., Ibar, E., Maltby, D., …Wardlow, J. (2019). Radio Spectra and Sizes of Atacama Large Millimeter/submillimeter Array-identified Submillimeter Galaxies: Evidence of Age-related Spectral Curvature and Cosmic-Ray Diffusion?. Astrophysical Journal, 883(2), Article 204. https://doi.org/10.3847/1538-4357/ab32e7

We analyze the multifrequency radio spectral properties of 41 6 GHz-detected Atacama Large Millimeter/submillimeter Array (ALMA)-identified, submillimeter galaxies (SMGs), observed at 610 MHz, 1.4 GHz, and 6 GHz with the Giant Metrewave Radio Telesco... Read More about Radio Spectra and Sizes of Atacama Large Millimeter/submillimeter Array-identified Submillimeter Galaxies: Evidence of Age-related Spectral Curvature and Cosmic-Ray Diffusion?.

SILVERRUSH. VIII. Spectroscopic Identifications of Early Large-scale Structures with Protoclusters over 200 Mpc at z ∼ 6–7: Strong Associations of Dusty Star-forming Galaxies (2019)
Journal Article
Harikane, Y., Ouchi, M., Ono, Y., Fujimoto, S., Donevski, D., Shibuya, T., Faisst, A. L., Goto, T., Hatsukade, B., Kashikawa, N., Kohno, K., Hashimoto, T., Higuchi, R., Inoue, A. K., Lin, Y.-T., Martin, C. L., Overzier, R., Smail, I., Toshikawa, J., Umehata, H., …Wang, W.-H. (2019). SILVERRUSH. VIII. Spectroscopic Identifications of Early Large-scale Structures with Protoclusters over 200 Mpc at z ∼ 6–7: Strong Associations of Dusty Star-forming Galaxies. Astrophysical Journal, 883(2), Article 142. https://doi.org/10.3847/1538-4357/ab2cd5

We have obtained three-dimensional maps of the universe in ~200 × 200 × 80 comoving Mpc3 (cMpc3) volumes each at z = 5.7 and 6.6 based on a spectroscopic sample of 179 galaxies that achieves gsim80% completeness down to the Lyα luminosity of $\mathrm... Read More about SILVERRUSH. VIII. Spectroscopic Identifications of Early Large-scale Structures with Protoclusters over 200 Mpc at z ∼ 6–7: Strong Associations of Dusty Star-forming Galaxies.

ALMACAL VI: Molecular gas mass density across cosmic time via a blind search for intervening molecular absorbers (2019)
Journal Article
Klitsch, A., Péroux, C., Zwaan, M. A., Smail, I., Nelson, D., Popping, G., Chen, C.-C., Diemer, B., Ivison, R., Allison, J. R., Muller, S., Swinbank, A. M., Hamanowicz, A., Biggs, A. D., & Dutta, R. (2019). ALMACAL VI: Molecular gas mass density across cosmic time via a blind search for intervening molecular absorbers. Monthly Notices of the Royal Astronomical Society, 490(1), 1220-1230. https://doi.org/10.1093/mnras/stz2660

We are just starting to understand the physical processes driving the dramatic change in cosmic star-formation rate between z ∼ 2 and the present day. A quantity directly linked to star formation is the molecular gas density, which should be measured... Read More about ALMACAL VI: Molecular gas mass density across cosmic time via a blind search for intervening molecular absorbers.

The ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: Evolution of the Molecular Gas in CO-selected Galaxies (2019)
Journal Article
Aravena, M., Decarli, R., Gónzalez-López, J., Boogaard, L., Walter, F., Carilli, C., Popping, G., Weiss, A., Assef, R. J., Bacon, R., Bauer, F. E., Bertoldi, F., Bouwens, R., Contini, T., Cortes, P. C., Cox, P., da Cunha, E., Daddi, E., Díaz-Santos, T., Elbaz, D., …Wisotzki, L. (2019). The ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: Evolution of the Molecular Gas in CO-selected Galaxies. Astrophysical Journal, 882(2), https://doi.org/10.3847/1538-4357/ab30df

We analyze the interstellar medium properties of a sample of 16 bright CO line emitting galaxies identified in the ALMA Spectroscopic Survey in the Hubble Ultra Deep Field (ASPECS) Large Program. This CO−selected galaxy sample is complemented by two... Read More about The ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: Evolution of the Molecular Gas in CO-selected Galaxies.

The Atacama Large Millimeter/submillimeter Array Spectroscopic Survey in the Hubble Ultra Deep Field: CO Emission Lines and 3 mm Continuum Sources (2019)
Journal Article
González-López, J., Decarli, R., Pavesi, R., Walter, F., Aravena, M., Carilli, C., Boogaard, L., Popping, G., Weiss, A., Assef, R. J., Bauer, F. E., Bertoldi, F., Bouwens, R., Contini, T., Cortes, P. C., Cox, P., da Cunha, E., Daddi, E., Díaz-Santos, T., Inami, H., …van der Werf, P. (2019). The Atacama Large Millimeter/submillimeter Array Spectroscopic Survey in the Hubble Ultra Deep Field: CO Emission Lines and 3 mm Continuum Sources. Astrophysical Journal, 882(2), https://doi.org/10.3847/1538-4357/ab3105

The Atacama Large Millimeter/submillimeter Array (ALMA) SPECtroscopic Survey in the Hubble Ultra Deep Field (HUDF) is an ALMA large program that obtained a frequency scan in the 3 mm band to detect emission lines from the molecular gas in distant gal... Read More about The Atacama Large Millimeter/submillimeter Array Spectroscopic Survey in the Hubble Ultra Deep Field: CO Emission Lines and 3 mm Continuum Sources.

The ALMA Spectroscopic Survey in the HUDF: Nature and Physical Properties of Gas-mass Selected Galaxies Using MUSE Spectroscopy (2019)
Journal Article
Boogaard, L. A., Decarli, R., González-López, J., van der Werf, P., Walter, F., Bouwens, R., Aravena, M., Carilli, C., Bauer, F. E., Brinchmann, J., Contini, T., Cox, P., da Cunha, E., Daddi, E., Díaz-Santos, T., Hodge, J., Inami, H., Ivison, R., Maseda, M., Matthee, J., …Wagg, J. (2019). The ALMA Spectroscopic Survey in the HUDF: Nature and Physical Properties of Gas-mass Selected Galaxies Using MUSE Spectroscopy. Astrophysical Journal, 882(2), https://doi.org/10.3847/1538-4357/ab3102

We discuss the nature and physical properties of gas-mass selected galaxies in the ALMA spectroscopic survey (ASPECS) of the Hubble Ultra Deep Field (HUDF). We capitalize on the deep optical integral-field spectroscopy from the Multi Unit Spectroscop... Read More about The ALMA Spectroscopic Survey in the HUDF: Nature and Physical Properties of Gas-mass Selected Galaxies Using MUSE Spectroscopy.

The ALMA Spectroscopic Survey in the HUDF: CO Luminosity Functions and the Molecular Gas Content of Galaxies through Cosmic History (2019)
Journal Article
Decarli, R., Walter, F., Gónzalez-López, J., Aravena, M., Boogaard, L., Carilli, C., Cox, P., Daddi, E., Popping, G., Riechers, D., Uzgil, B., Weiss, A., Assef, R. J., Bacon, R., Bauer, F. E., Bertoldi, F., Bouwens, R., Contini, T., Cortes, P. C., Cunha, E. D., …Wisotzki, L. (2019). The ALMA Spectroscopic Survey in the HUDF: CO Luminosity Functions and the Molecular Gas Content of Galaxies through Cosmic History. Astrophysical Journal, 882(2), https://doi.org/10.3847/1538-4357/ab30fe

We use the results from the ALMA large program ASPECS, the spectroscopic survey in the Hubble Ultra Deep Field (HUDF), to constrain CO luminosity functions of galaxies and the resulting redshift evolution of ρ(H2). The broad frequency range covered e... Read More about The ALMA Spectroscopic Survey in the HUDF: CO Luminosity Functions and the Molecular Gas Content of Galaxies through Cosmic History.

A machine-learning approach for identifying the counterparts of submillimetre galaxies and applications to the GOODS-North field (2019)
Journal Article
Liu, R. H., Hill, R., Scott, D., Almaini, O., An, F., Gubbels, C., Hsu, L.-T., Lin, L., Smail, I., & Stach, S. (2019). A machine-learning approach for identifying the counterparts of submillimetre galaxies and applications to the GOODS-North field. Monthly Notices of the Royal Astronomical Society, 489(2), 1770-1786. https://doi.org/10.1093/mnras/stz2228

Identifying the counterparts of submillimetre (submm) galaxies (SMGs) in multiwavelength images is a critical step towards building accurate models of the evolution of strongly star-forming galaxies in the early Universe. However, obtaining a statist... Read More about A machine-learning approach for identifying the counterparts of submillimetre galaxies and applications to the GOODS-North field.

The East Asian Observatory SCUBA-2 Survey of the COSMOS Field: Unveiling 1147 Bright Sub-millimeter Sources across 2.6 Square Degrees (2019)
Journal Article
Simpson, J., Smail, I., Swinbank, A., Chapman, S., Chen, C.-C., Geach, J., Matsuda, Y., Wang, R., Wang, W.-H., Yang, Y., Ao, Y., Asquith, R., Bourne, N., Coogan, R., Coppin, K., Gullberg, B., Hine, N., Ho, L., Hwang, H., Ivison, R., …Wardlow, J. (2019). The East Asian Observatory SCUBA-2 Survey of the COSMOS Field: Unveiling 1147 Bright Sub-millimeter Sources across 2.6 Square Degrees. Astrophysical Journal, 880(1), Article 43. https://doi.org/10.3847/1538-4357/ab23ff

We present sensitive 850 μm imaging of the Cosmological Evolution Survey (COSMOS) field using 640 hr of new and archival observations taken with SCUBA-2 at the East Asian Observatory's James Clerk Maxwell Telescope. The SCUBA-2 COSMOS survey (S2COSMO... Read More about The East Asian Observatory SCUBA-2 Survey of the COSMOS Field: Unveiling 1147 Bright Sub-millimeter Sources across 2.6 Square Degrees.

Revealing the Stellar Mass and Dust Distributions of Submillimeter Galaxies at Redshift 2 (2019)
Journal Article
Lang, P., Schinnerer, E., Smail, I., Dudzevičiūtė, U., Swinbank, A., Liu, D., Leslie, S., Almaini, O., An, F. X., Bertoldi, F., Blain, A., Chapman, S., Chen, C.-C., Conselice, C., Cooke, E., Coppin, K., Dunlop, J., Farrah, D., Fudamoto, Y., Geach, J., …Werf, P. V. D. (2019). Revealing the Stellar Mass and Dust Distributions of Submillimeter Galaxies at Redshift 2. Astrophysical Journal, 879(1), Article 54. https://doi.org/10.3847/1538-4357/ab1f77

We combine high-resolution ALMA and HST/CANDELS observations of 20 submillimeter galaxies (SMGs), predominantly from the AS2UDS survey at z sime 2, with bright rest-frame optical counterparts (${K}_{{\rm{s}}}\lesssim 22.9$) to investigate the resolve... Read More about Revealing the Stellar Mass and Dust Distributions of Submillimeter Galaxies at Redshift 2.