Hello.
While using VSX, I noticed a possible duplicate variable star entry. ZTF19aaclksh and ZTF18abnbldg share identical coordinates. I verified their information: ZTF18abnbldg has coordinates 20 46 47.344 +17 13 05.69 (311.6972658 +17.2182467).
In addition, there are also the following similar duplicate entries of coordinates:
CzeV3617 = SERIV 169
SERIV 172 = CzeV3626
ZTF18abbogxd = ZTF18abacprn
KaiV115 = ASASSN-V J054436.36+405828.2
Best wishes,
Jiashuo Zhang
Thanks Jiashuo. We’ll correct them.
Sebastian
Hi.
I recently wrote a Python script to check variable stars across the entire VSX. I once again discovered some duplicate entries for variable stars.
Recently, the variable star search team I lead reported a batch of variable stars to VSX. During the waiting period for inclusion, there’s often uncertainty. Consequently, two variable stars were included in VSX twice. They are:
STSP J212207.73+471345.8 = AISV-BD J320.532+47.229
STSP J190906.59-030335.2 = AISV-BD J287.277-3.059
I checked the reporting times for these two variable stars. Their discovery should be attributed to the AISV-BD team.
Additionally, here are other duplicate variable stars:
V5416 Sgr = Gaia DR3 4050251466911384064
@Sebastian_Otero
Thanks Jiashuo, I have removed them from VSX.
Cheers,
Sebastian
Hello everyone, I have carried out a detailed inspection of the VSX data. Based on the VSX entries on VizieR, I used a cross-match radius of 2 arcseconds, then verified them on the VSX website, and finally confirmed them with Aladin.
I confirmed that the following entries are duplicates, including:
Gaia DR3 387248819938407424 = Gaia DR3 387248824234876544
Gaia DR3 2546078637661747072 = Gaia DR3 2546078641957761408
Gaia DR3 537953866529865344 = Gaia DR3 537953866533985280
Gaia DR3 564556722164252672 = Gaia DR3 564556717868115456
Gaia DR3 75450588137164928 = Gaia DR3 75450588137659648
Gaia DR3 547064694755045888 = Gaia DR3 547064690460859904
Gaia DR3 271927234352414720 = Gaia DR3 271927234348383744
Gaia DR3 475784111844194560 = Gaia DR3 475784111840909568
Gaia DR3 3401236248684895488 = Gaia DR3 3401236248686903808
Gaia DR3 3209486639192060160 = Gaia DR3 3209486643482763136
Gaia DR3 3340757336723644928 = V0463 Ori (there are actually two objects at this position, but based on the coordinates, they may refer to the same object)
Gaia DR3 3015795128945047424 = Gaia DR3 3015795124649057536 (this object may be a YSO rather than an L-type object as classified by Gaia)
Gaia DR3 3320493230047371776 = Gaia DR3 3320493234341985536
Gaia DR3 5654094651551016064 = Gaia DR3 5654094651549041152
Gaia DR3 5750862807348410752 = Gaia DR3 5750862807349433856
Gaia DR3 713737596530055296 = Gaia DR3 713737600827283200
Gaia DR3 1699025088759774720 = Gaia DR3 1699025088761152896
Gaia DR3 417676331074199040 = Gaia DR3 417676331073212544
Gaia DR3 525046935753790464 = Gaia DR3 525046940054939648
Gaia DR3 402555808503499776 = Gaia DR3 402555812800963968
Gaia DR3 2452016212473903616 = Gaia DR3 2452016208179008128
Gaia DR3 357368049559332352 = Gaia DR3 357368045264333952
Gaia DR3 505593585763782528 = Gaia DR3 505593590066816896
Gaia DR3 2506498177566246656 = Gaia DR3 2506498181861219200
Gaia DR3 2521310802510638208 = Gaia DR3 2521310802511386240
Gaia DR3 119043853357756160 = Gaia DR3 119043849061482752
Gaia DR3 3252841314676454400 = Gaia DR3 3252841310381645824
Gaia DR3 3303405758494320000 = Gaia DR3 3303405758496799744
Gaia DR3 501192313733444608 = Gaia DR3 501192313730128768
Gaia DR3 178951289860956160 = Gaia DR3 178951294154890752
Gaia DR3 481958999207935232 = Gaia DR3 481959003507179264
Gaia DR3 3340292930497644928 = Gaia DR3 3340292930500369152
Gaia DR3 2016253984593106176 = Gaia DR3 2016253980289342336
Gaia DR3 2761107794538911744 = Gaia DR3 2761107794539158400
In fact, there are still many more suspicious duplicate entries, and I am checking them one by one.
@Sebastian_Otero Can you further verify their information and make the necessary corrections?
I just want to mention here that we are already addresing this in private.
But it is important to note that the fact that there are two identifiers for most of the objects Jiashuo is referring to as duplicates means that Gaia was able to split them in two stars. So they are not actually duplicates.
A 2" separation was used for these matches, but Gaia has split objects as close as 0.3". Thus we may be seeing spurious variability caused by mutual light contamination but not duplicates.
Sometimes one entry might be variable and the other one not. Sometimes both will be real variables. Sometimes both will be artifacts. It depends on their separation and their brightness.
If anyone wants to check for mistakes, inconsistencies and other problems with the current VSX data, you are welcome to submit revisions to VSX, following the guidelines in our site,the VSX manual, the VSX FAQ page, etc.
Remember that VSX has a “Do it yourself” concept.
If you want to go deeper and work on batch updates or large sets of revisions/corrections, you might want to join the VSX Team and get more involved. Just let us know.
Cheers,
Sebastian