Figure 1 from COol Companions ON Ultrawide orbiTS (COCONUTS). I. A High-gravity T4 Benchmark around an Old White Dwarf and a Re-examination of the Surface-gravity Dependence of the L/T Transition

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COol Companions ON Ultrawide orbiTS (COCONUTS). I. A High-gravity T4 Benchmark around an Old White Dwarf and a Re-examination of the Surface-gravity Dependence of the L/T Transition

Authors: Zhoujian Zhang, Michael C. Liu, J.J. Hermes, Eugene A. Magnier, Mark S. Marley, Pier-Emmanuel Tremblay, Michael A. Tucker, Aaron Do, Anna V. Payne, and Benjamin J. Shappee

2020 The Astrophysical Journal 891 171.

Provider: AAS Journals

Caption: Figure 1.

The white dwarf primary COCONUTS-1A and the T dwarf companion COCONUTS-1B in the Pan-STARRS1 y_P1-band image (size of 90″ on each side). The two objects are separated by 40.″61 ± 0.″04, which corresponds to 1280 ± 4 au at the primary’s distance.

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