More stars in the ages VAC than in the main catalog?

[jobovy]

More stars in the ages VAC than in the main catalog?

[svenbuder]

Hi @jobovy,

There is a difference because we have a main catalog for all spectra (allspec) and a smaller clean version with only one entry per star (allstar).

The ages VAC has entries for all spectra individually with low flag_sp, that is, a large portion of the allspec file. allspec contains all measurements for all spectra, whereas allstar only contains 1 measurement per star (from the highest S/N spectrum). So the additional entries are from repeats of the same star.

We are still having issues with ingesting the spectra - I will make sure that you will know once they are online 🙂 I assume you want to download all spectra anyway? In that case maybe shoot an email to [email protected], because I think it might be easier to provide you with an HDF5 file.

Best,

Sven

[jobovy]

Hi @svenbuder, thanks for the clarification! I've now added an interface to GALAH DR3 to my gaia_tools package that also optionally loads the VACs.

Yes, we would just want to download all of the spectra 🙂, so good to know that they are available already; I'll email the helpdesk!

Thanks!