Multiple CO lines in SMMJ 16359 + 6612 – Further evidence for a merger

Abstract

Using the IRAM 30m telescope, we report the detection of the CO(3–2), CO(4–3), CO(5–4) and CO(6– 5) lines in the gravitational lensed submm galaxy SMMJ16359+6612 at z = 2.5. The CO lines have a double peak profile in all transitions. From a Gaussian decomposition of the spectra we show that the CO line ratios, and therefore the underlying physical… (More)

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