Is there any catalogued measurements of emission lines, such as fluxes and equivalent widths?

Question

Hello

I am Gabriel Azevedo, a PhD student at UFRGS, in Brazil.

I am currently using DESI EDR spectra of some galaxies in my research, and I need to measure their emission-line fluxes and equivalent widths.

Before I compute those values by myself, I was searching for catalogued measurements of emission lines, but I could not find anything.

I would like to ask if there is anything publicly available about it.

Answer 1

Hello Gabriel--

Thank you for your question.

There are three major emission-line catalogs, although unfortunately only one of them is publicly available at the moment. The three catalogs are:

• emline - available now (see the tile and healpix data model and Section 7 of Raichoor et al. 2023 but note this important bug affecting the equivalent widths);
• FastSpecFit - coming soon by Moustakas et al. (click here for documentation)
• Stellar Mass and Emission Line Catalog - coming soon by Hu Zou et al.

The last two catalogs are value-added catalogs which we're planning to release sometime early next month (keep an eye on the VAC page - https://data.desi.lbl.gov/doc/releases/edr/#coming-soon). 

I hope this information helps but if you have any more questions please don't hesitate to post them here.

Kindly,

-John