Fix duplicate and incorrect ADS entries for GCN Circulars

[lpsinger]

I sent the following to ADS:

Dear ADS,

We (the maintainers of the General Coordinates Network, https://gcn.nasa.gov/) have noticed some duplicated or incorrect ADS entries for GCN Circulars. There are two general categories:

• Pairs of duplicate ADS entries, for example https://ui.adsabs.harvard.edu/abs/2023GCN.35446....1L/abstract and https://ui.adsabs.harvard.edu/abs/2023GCN.35446....1Z/abstract.
• Entries for which the volume number is saved incorrectly, although the volume is correct in the bibcode. For example, https://ui.adsabs.harvard.edu/abs/2009GCN.10001....1H/abstract. The bibcode is 2009GCN.10001....1H but the volume number is stored 101. The correct volume number is 10001.

There are between tens and hundreds of each category. What is the most efficient way to correct these ADS records?

Thanks,
Leo

Originally posted by @lpsinger in #2639 (comment)

[lpsinger]

I received the following from ADS:

I can fix the 2nd category of problems in bulk. They should be correct after the weekend update.
For the first category of problems, it is usually because we got them from two different sources with conflicting
author information (including whether the collaboration should be the author or not). Since we have no way to
know which is correct, it would be best if you can send us that information - I just need to know which of the
pair of bibcodes is the good one.

[lpsinger]

I sent the following reply to ADS:

The second category is fixed now. For the first category, I don’t really see any systematic reason to keep one bibcode but not the other. And unfortunately, there are some Circulars for which both of the two corresponding duplicate ADS entries already have citations. What are the options for dealing with such entries?