emamajek on 28-Feb-2025 20:15:17 GMT about 1RXS J052250.8+191423
I think the A3 spectral type has been mis-applied to the star ATO J080.7082+19.2360 = [LH98] 185 = Gaia DR3 3401509404309694976.
There are two stars of similar brightness within 10" of each other. The 2nd one 9" away is the A-type star, but ATO J080.7082+19.2360 = [LH98] 185 = Gaia DR3 3401509404309694976 is clearly a nearby M-type star:
Star #1 = Gaia DR3 3401509404309694976 = 2MASS J05224999+1914102
X-ray-emitting (1RXS J052250.8+191423, 2RXS J052250.7+191423, 1eRASS
J052250.0+191413), fast-rotating (ASASSN-V J052249.99+191409.7,
Prot=1.14d
2018AJ....156..241H
), Halpha-emitting (EW(Ha)=-6.8A;
2017ApJ...838..150K
), Li-rich (EW(LiI 6707)=130mA), M dwarf
(2018AJ....156..241H,2019MNRAS.489.2615M).
Recommend adopting default SpT: M0
2018AJ....156..241H
Star #2 = Gaia DR3 3401509404309694720 = 2MASS J05225064+1914136
Analysis of LAMOST spectroscopy consistently shows A-type spectral
types (2018yCat.5153....0L, 2019RAA..in.prep..L,
2019ApJS..242...13Q
,
2022ApJS..259...63S
).
Recommend adopting default SpT: kA2hA8mA7 Sr
2024ApJS..272...43Y
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