Our mission

We want to promote the understanding of the physics and impact of the Lyman alpha line by collecting spectra from as many samples as possible and analyzing them in a homogeneous way.

More about LASD >>>
We are now live!
Please check out the webpage and send us feedback: send us an email, join our slack channel, ping us on twitter or file a bugreport on our issue tracker

LASD at a glance

Number of Spectra
Spectra with zsys
Downloadable spectra

News & announcements

Gravitationally lensed galaxies

LASD now supports uploading gravitationally lensed galaxies, using the lens_mag parameter.

Check out the documentation for details

Documentation >>>

The LASD paper

The paper presenting the LASD database is now out on ArXiv.

Check it out!

ArXiv Paper >>>


We are now live! We encourage you all to try the site out and explore the datasets! If you find any bugs, please report them in our Issue tracker and we will try to solve them as fast as possible

Bitbucket issue tracker >>>


Analyze the data directly

You can search through, analyze and plot the data in the database right from your browser. You can browse through individual spectra as well as examine derived properties.


Add your own data to the database

You can upload new spectra together with other ancillary measurements to the database. The spectrum is then processed and a bunch of Lyman alpha quantities are measured