Massive red spiral galaxies in SDSS-IV MaNGA survey

Jiantong Cui,Qiusheng Gu,Yong Shi

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY(2024)

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摘要
Massive red spiral galaxies (MRSGs) are supposed to be the possible progenitors of lenticular galaxies (SOs). We select a large sample of MRSGs (M-* > 10(10.5)M(circle dot)) from Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) DR17 using the g - r colour versus stellar mass diagram, along with control samples of blue spirals and SOs. Our main results are as follows: (1) After comparing the S6rsic index, concentration parameter, asymmetry parameter distribution, size-mass relation, and Sigma(1) (stellar mass surface density within the central 1 kpc)-mass relation, we find MRSGs are similar to Ss and have more compact and symmetric structures than blue spirals. MRSGs also resemble SOs in Dn4000, metallicity, Mgb/(Fe), andV/o radial profile. (2) By using MaNGA 2D spectra data, we separate the spatial regions into inner (R < 0.8R(e)) and outer (0.8 < R < 1.5R(e)) regions, and detect residual star formation in the outer regions of MRSGs. (3) When we select a sub-sample of MRSGs with NUV - r > 5, we find that they are completely star formation quenched in both inner and outer regions. Compared to optically selected MRSGs, NUV - r selected MRSGs appear to be more concentrated and have more massive dark matter haloes. The similarities between Ss and MRSGs suggest the possible evolutionary trend between MRSGs and Ss.
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关键词
galaxies: evolution,galaxies: kinematics and dynamics,galaxies: spiral,galaxies: star formation,galaxies: structure
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