Academia Sinica Institute of Astronomy & Astrophysics
中央研究院天文及天文物理研究所
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Extragalactic Astronomy

The baryonic mass-size relation of late-type galaxies
Image Credit: Po-Feng Wu
The baryonic mass-size relation of late-type galaxies
The baryonic (gas+stars) masses and the scale lengths of the stellar disks of morphological late-type galaxies follow a very tight power-law relation over 4 orders of magnitudes in mass. This scaling relation provides a benchmark constraint to galaxy formation models.
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