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Published 2007 | Published
Book Section - Chapter Open

Dense Gas at High Redshifts: A Search with the 110m Robert C. Byrd Telescope

Abstract

We have conducted a sensitive search for the redshifted HCN(1−0) line (v_(rest) = 88.6304 GHz) towards three luminous submillimeter galaxies at z ∼ 2.5 − 2.8 using the K-band receiver (17.6-27.1GHz) on the 110m Robert C. Byrd Telescope (also known as the Green Bank Telescope). Aided by gravitational lensing, we place strong upper limits on the intrinsic line luminosity of all three sources (L′_(HCN(1−0)) ≤ 2×10^(10) K kms^(−1) pc^2). We conclude that all four submillimeter galaxies that have been observed in HCN to date are consistent with the tight relation between FIR and HCN luminosity observed in a variety of local star-forming systems, ranging from Galactic dense cores to (ultra)luminous infrared galaxies at z ≤ 0.1.

Additional Information

© 2007 Astronomical Society of the Pacific. I'm grateful to NRAO for financial and scientific support for this project. I'm also indebted to my trusted collaborators: Laura Hainline, Andrew Blain, Rob Ivison, Padelis Papadopoulos, and Ian Smail.

Attached Files

Published - Greve2007p9170From_Z-Machines_To_Alma__Sub__Millimeter_Spectroscopy_Of_Galaxies.pdf

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Greve2007p9170From_Z-Machines_To_Alma__Sub__Millimeter_Spectroscopy_Of_Galaxies.pdf

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August 19, 2023
Modified:
January 13, 2024