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    • EMU/GAMA: Radio Detected Galaxies Are More Obscured Than Optically Selected Galaxies

    U. T. Ahmed,A. M. Hopkins, J. Ware,Y. A. Gordon,M. Bilicki,M. J. I. Brown,M. Cluver,G. Guerkan,a. R. Lopez-Sanchez,D. A. Leahy,L. Marchetti,S. Phillipps,I. Prandoni,N. Seymour,E. N. Taylor,E. Vardoulaki

    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA（2024）

    Macquarie Univ | Univ Wisconsin Madison | Polish Acad Sci | Monash Univ | Swinburne Univ Technol | Thuringer Landessternwarte | Univ Calgary | Univ Cape Town | Univ Bristol | INAF Ist Radioastron | Curtin Univ

    Cited 1|Views17
    Abstract
    We demonstrate the importance of radio selection in probing heavily obscured galaxy populations. We combine Evolutionary Map of the Universe (EMU) Early Science data in the Galaxy and Mass Assembly (GAMA) G23 field with the GAMA data, providing optical photometry and spectral line measurements, together with Wide-field Infrared Survey Explorer (WISE) infrared (IR) photometry, providing IR luminosities and colours. We investigate the degree of obscuration in star forming galaxies, based on the Balmer decrement (BD), and explore how this trend varies, over a redshift range of 0
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    Optical,radio,obscuration,dust,star-forming galaxies
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    EMU/GAMA: A Technique for Detecting Active Galactic Nuclei in Low Mass Systems

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    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA 2024

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    【要点】：研究揭示了使用射电波选择法能够探测到比光学选择法更多被遮挡的星系，并提出射电探测到的星系具有更高的遮挡程度。
    

    【方法】：结合了EMU Early Science数据与GAMA数据的光学测光和光谱线测量，以及WISE红外测光数据，研究了星形成星系的遮挡程度。
    

    【实验】：通过分析红移范围0<z<0.345内的Balmer decrement（BD）变化趋势，使用EMU Early Science数据与GAMA数据，发现射电探测到的星系群体平均遮挡程度高于光学样本，且丢失了最低BD和最低质量星系，这些星系通常具有较低的恒星形成率和金属丰度。实验结果未提及具体数据集名称。
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