Resolved Structure of the Arp 220 Nuclei atλ≈ 3 mm
نویسندگان
چکیده
منابع مشابه
The Submillimeter Array 1.3 mm line survey of Arp 220
Context. Though Arp 220 is the closest and by far the most studied ULIRG, a discussion is still ongoing on the main power source driving its huge infrared luminosity. Aims. To study the molecular composition of Arp 220 in order to find chemical fingerprints associated with the main heating mechanisms within its nuclear region. Methods. We present the first aperture synthesis unbiased spectral l...
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We report high resolution imaging of the ultraluminous infrared galaxy Arp 220 at 1.1, 1.6, and 2.22 µm with NICMOS on the HST. The diffraction-limited images at 0.1–0.2 ′′ resolution clearly resolve both nuclei of the merging galaxy system and reveal for the first time a number of luminous star clusters in the circumnuclear envelope. The morphologies of both nuclei are strongly affected by dus...
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We present detections of the 3 P 1 ? 3 P 0 ne-structure line of neutral carbon, and of the J = 3 ? 2 rotational line of carbon monoxide in the ultraluminous infrared galaxy Arp 220, obtained at the Caltech Submillimeter Observatory. C I emission in Arp 220 is found to be at the expected level in relation to the strong FIR dust emission and to the CO emission, whereas the C II emission seen by I...
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The ultraluminous infrared galaxy Arp 220 has been observed at resolution in CO (2È1) and 1 mm 0A.5 continuum using the newly expanded Owens Valley Millimeter Array. The CO and continuum peaks at the double nuclei and the surrounding molecular gas disk are clearly resolved. We Ðnd steep velocity gradients across each nucleus (*V D 500 km s~1 within whose directions are not aligned with r \ 0A.3...
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The dense ISM which is the fuel for both nuclear starbursts is believed to be accreted to the nucleus by stellar bars and galactic interactions. In this contribution, I summarize the observational results for two galactic nuclei at the extreme ends of starburst/AGN activity – our own Galactic nucleus with SgrA and the ULIRG Arp 220. I discuss theoretical considerations for the properties of the...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2017
ISSN: 1538-4357
DOI: 10.3847/1538-4357/aa8f4b