emamajek on 16-Nov-2024 20:37:45 GMT about TWA 22
TWA 22 is *not* a "Low-mass X-ray binary" (which would suggest that one of the components is a black hole or neutron star). TWA 22 is a binary pair of low-mass, pre-MS stars which are indeed X-ray emitting (as is common for such stars).
The pre-MS status is evidenced by its consistent kinematic membership in the ~20 Myr-old Beta Pic Moving Group/Association (e.g. 2015A&A...583A..85A 2017A&A...600A..83M 2020A&A...642A.179M
2019MNRAS.489.3625C
), and its very strong Li absorption (2022A&A...664A..70G).
TWA 22 has cross-IDed with additional X-ray sources:
1eRASS J101726.4-535427 (2024A&A...684A.121F)
2RXS J101726.0-535427 (2024A&A...687A.250Q ,2022A&A...664A.105F)
Suggestion for improved spectral type:
M6Ve+M6Ve
2013ApJ...762...88M
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