Please use this identifier to cite or link to this item: http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1272
The AZTEC/SMA interferometric imaging survey of submillimeter-selected high-redshift galaxies
David Hughes
ITZIAR ARETXAGA MENDEZ
Acceso Abierto
Atribución-NoComercial-SinDerivadas
Cosmology: observations
Galaxies: evolution
Galaxies: high-redshift
Galaxies:starburst
Galaxies: submillimeter
Galaxies: formation
We present results from a continuing interferometric survey of high-redshift submillimeter galaxies with the Submillimeter Array, including high-resolution (beam size ∼ 2 arcsec) imaging of eight additional AzTEC 1.1mm selected sources in the COSMOS Field, for which we obtain six reliable (peak S/N > 5 or peak S/N > 4 with multiwavelength counterparts within the beam) and two moderate significance (peak S/N > 4) detections. When combined with previous detections, this yields an unbiased sample of millimeter-selected SMGs with complete interferometric followup. With this sample in hand, we (1) empirically confirm the radio-submillimeter association, (2) examine the submillimeter morphology – including the nature of submillimeter galaxies with multiple radio counterparts and constraints on the physical scale of the far infrared – of the sample, and (3) find additional evidence for a population of extremely luminous, radio-dim submillimeter galaxies that peaks at higher redshift than previous, radio-selected samples. In particular, the presence of such a population of high-redshift sources has important consequences for models of galaxy formation – which struggle to account for such objects even under liberal assumptions – and dust production models given the limited time since the Big Bang.
The Astrophysical Journal
2009
Artículo
Inglés
Estudiantes
Investigadores
Público en general
Younger, Joshua D., et al., (2009). The AZTEC/SMA interferometric imaging survey of submillimeter-selected high-redshift galaxies, The Astrophysical Journal. Vol.704(1):1-11
RADIOASTRONOMÍA
Versión aceptada
acceptedVersion - Versión aceptada
Appears in Collections:Artículos de Astrofísica

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