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Four Late-type Galaxies with Double Radio Lobes and Properties of Such Galaxies 后印本

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摘要: The triggering mechanism for radio lobes from late-type galaxies is not fully understood. More samples are desired for a thorough investigation and statistics. By utilizing the optical data from the newly released Dark Energy Spectroscopic Instrument imaging surveys and the radio sources from the NRAO VLA Sky Survey and the Faint Images of the Radio Sky at Twenty-centimeter, we identify four Late-type Galaxies with double Radio Lobes (LaGRLs): J0217−3645, J0947+6220, J1412+3723 and J1736+5108. Including previously known LaGRLs, we confirm the correlation between radio power P1.4 GHz and stellar mass M* of host galaxies. Most (25/35) LaGRLs belong to the blue cloud galaxies, while the newly identified cases in this work are located within the region of the red sequence. We find a clear correlation between the differential radio power, i.e., the offset from the P1.4 GHz − M* relation, and the galaxy color, indicating that bluer galaxies at a fixed M* tend to host more powerful radio lobes. Furthermore, the majority (31/36) of LaGRLs are either located in a galaxy group or displaying a disturbed morphology. We suggest that all of the galaxy mass, color and surrounding environment could play important roles in triggering radio lobes in late-type galaxies.

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[V1] 2024-05-10 09:30:38 ChinaXiv:202405.00094V1 下载全文

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