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An Old, Low-mass, Metal-poor Hypervelocity Star Candidate Consistent with a Galactic Center Origin

  • Authors: Shunhong Deng, Yang Huang, Haozhu Fu, Yongkang Sun, Qikang Feng, Guoyang Chen, Huawei Zhang

Shunhong Deng et al 2026 The Astrophysical Journal Letters 1003 .

  • Provider: AAS Journals

Caption: Figure 1.

The observed spectrum (black) is compared with a synthetic spectrum (red) from the Göttingen spectral library (T.-O. Husser et al. 2013), computed with Teff = 6200 K, ﹩\mathrm{log}g=4.5﹩, [Fe/H] = −1.5, and [α/Fe] = 0.40. Insets show enlarged views of the Ca II K λ3933 and H λ3968; the Mg I b triplet λλ5167, 5173, 5184; and the Ca II triplet λλ8498, 8542, 8662 lines.

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