emamajek on 03-Sep-2017 02:58:18 GMT about
Some brief notes on the confusing nomenclature of this system.
WDS J02452-4344 is a triple system with wide pair CPO 29, and component A is split into a tight pair BRG 15.
Unfortunately there appears to be inconsistent notation on the designations of "A" and "B" in the system between studies. Looking at the optical/IR photometry in Reidel+2014 (2014AJ....147...85R), the southern component (LP 993-115 = 2MASS J02451070-4344319) is brighter in the optical VRI bands, while the northern component (LP 993-116 = 2MASS J02451431-4344102, tight binary BRG 15) is somewhat brighter in the near-IR JHKs bands, which may be the reason for the confusion.
WDS notes:
"CPO 29 LDS 78.
BRG 15 Aa,Ab: 2MASS J02451431-4344102 is a member of
an approximately equal-brightness binary with ∼50" separation, in addition to being a close binary discovered with AstraLux."
Under the current WDS nomenclature for CPO 29 and following Luyten's IDs:
CPO 29A = LP 993-116 = 2MASS J02451431-4344102 = CD -44 836 B
CPO 29B = LP 993-115 = 2MASS J02451070-4344319 = CD -44 836 A
CPO 29A is split into the pair BRG 15, which Janson+2012 estimates spectral types M4.0V & M4.5V.
CPO 29B is classified M4 by
1985ApJS...59..197B
.
Default spectral type for "CPO 29" entry could be listed as (M4.0V+M4.5V)+M4V.
Confusingly, the WDS and IDS components are reversed:
WDS J02452-4344B = IDS 02414-4409 A = LP 993-115
WDS J02452-4344A = IDS 02414-4409 B = LP 993-116
CPO 29 A and CPO 29 B are currently reversed in SIMBAD compared to Washington Double Star Catalog.
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