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研究成果藝廊

次毫米波陣列計畫

The central region of the Seyfert 1 galaxy NGC 1097
圖片來源: Hsieh et al.
The central region of the Seyfert 1 galaxy NGC 1097
The central region of the Seyfert 1 galaxy NGC 1097 mapped with the SMA in 12CO(2-1) (lower-right image). NGC 1097 is a nearby galaxy with a large-scale bar (left image), and hosts a circumnuclear starburst ring (upper-right image). Straight dust lanes al
The SMA has been playing an important role in studying extragalactic objects. At ASIAA, nearby Seyfert galaxies have been intensively observed using the SMA to trace warm gas surrounding central active galactic nuclei (AGNs) and starburst rings to understand the role of molecular gas in AGN activities. An example is the 12CO(2-1) observations of the type 1 Seyfert galaxy NGC 1097. The CO map revealed a circumnuclear molecular ring with a radius of 700 pc, at the same location as the starburst ring, and a strong central concentration of molecular gas with a radius of 175 pc, which is coincident with the Seyfert nucleus, suggesting that warm and dense molecular gas is concentrated toward the Seyfert nucleus.
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