Photometry of globulars in early galaxies

The combination of optical and near-infrared (NIR) colours has the potential to break the age/metallicity degeneracy and offers a better metallicity sensitivity than optical...光学与近红外（NIR）波段的颜色组合，有望打破年龄-金属丰度简并（age/metallicity degeneracy），且相较于仅使用光学波段的颜色组合，具备更优异的金属丰度灵敏度……