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I was looking at the entry for Delta Tri on the SIMBAD database, and it seems that the references to it being a binary and having a companion star have been removed from the basic data section.

Does this mean that the latest data on the system have ruled out the presence of the companion star?

PlutonianEmpire wrote:I was looking at the entry for Delta Tri on the SIMBAD database, and it seems that the references to it being a binary and having a companion star have been removed from the basic data section.

The page is here, if I look at the other object types section I see the following:

* (*,AG,ASCC,BD,CSI,GC,GCRV,GEN#,GJ,HD,HIC,HIP,HR,N30,PLX,PM,PPM,ROT,SAO,SKY#,TYC,UBV,USNO,uvby98) , PM* (Ci,LFT,LHS,LSPM,LTT,NLTT) , ** (ADS,CCDM,IDS,WDS) , SB* (SBC7,SBC9) , IR (2MASS) , UV (TD1) , X (1RXS)

The key to the object types is at this page, the meanings for these object types are:

* - Star
PM* - High proper-motion Star
** - Double or multiple star
SB* - Spectroscopic binary
IR - Infra-Red source
UV - UV-emission source
X - X-ray source

So SIMBAD does indicate this system is binary or multiple.