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河外天文學
| Gauging the Hidden Hot Nucleus of NGC 4418 with submillimeter Interferometry |
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圖片來源: Sakamoto, Aalto, Costagliola, Martin, Ohyama, Wiedner, & Wilner
NGC 4418 is nearby luminous infrared galaxy whose nucleus is deeply shrouded in dust.
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| Our SMA submillimeter observations at sub-arcsec resolution revealed a ~20 pc dusty core with Lbol ~ 1011 L⊙ ~ Lgalaxy, Lbol/Mdyn ~ 500 L⊙/M⊙, and NH ≧ 1025 cm-2 (Compton thick). We also found a sign of a nuclear wind. (Sakamoto, Aalto, Costagliola, Martin, Ohyama, Wiedner, & Wilner, 2013, ApJ, 764, 42) |
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