DAWN Newsletter

May 2023

Meetings around the world!

This month several DAWNers have attended global meetings in Rochester, NY, China, Israel and Slovenia.

Cosmos 2023 Rochester

A week dedicated to the COSMOS survey, with a particular focus on the ongoing JWST Cosmos Web program. Many current and previous DAWNers took part, both in person (Sune and Conor) and remotely.

Kate, Jasleen, Gabe, Victoria, CANUCS meeting in Slovenia

Jasleen, Kate, Gabe, and Victoria traveled to Izola, Slovenia for a workshop with the CANUCS collaboration at the end of May. They spent the week working on and planning exciting projects with new JWST data and got to spend time with international collaborators.

Symposium by Albert Sneppen at the Bloom Festival

How much trouble can two dying stars really create?

On Sunday, 28 May 2023, Albert Sneppen gave a wonderful symposium speech for over 200 participants in the audience at the yearly outdoor Bloom Festival.

The symposium was focused on Albert Sneppen's research on the perfect explosion in the kilonova AT2017gfo/GW170817.


Upcoming Events

♦ Cake Talks (ongoing) See the schedule here
♦ UCPH Festival 09 Jun Link is here
♦ DAWN Summit 26-28 Jun Link: TBA
♦ Lab-Retreat: Sweden 28-29 Aug Link for info is here
♦ Save the date: DAWN X-mas Party 15 Dec

Upcoming Guests

John Silverman 19 Jun 28 Jun
Balu Sreedhar 20 Jun 23 Jun
Julian Munoz 21 Jun 23 Jun
SURF-students 19 Jun 02 Sep
Staff - Pascal Oesch 31 Jul 01 Sep
Viola Gelli 31 Jul 04 Aug
Steven Finkelstein 01 Aug 07 Aug

Meet Gonzalo Prieto Lyon - new member of the 1st Author Pub-Club!


Hola! I’m Gonzalo Prieto from Santiago de Chile. Here at DAWN I’m a PhD student working with Prof. Charlotte Mason on galaxies near the epoch of reionization. I am especially interested in Lyman-Alpha, and the mix of internal properties that allow it to escape from the medium of early galaxies.   

I’ve always been interested in high-redshift galaxies and how they reionized the neutral Universe. JWST has the unique capability of observing rest-frame optical lines in the early Universe, such as H-alpha. I wanted to get my hands on some of that never-seen-before data. Given what we had, an interesting side-project was to measure the production of ionising photons in early galaxies, the same photons that works as ionisers of the early Universe.

With the paper published, now I moved on to a new project, where I will study the offset of Lyman-Alpha to the systemic redshift thanks to the same H-Alpha emission lines. I want to learn a bit more about the internal factors that contribute to Lyman-Alpha redshifting so much from its central wavelength. Thanks to JWST, I might be the first to study this effect in faint galaxies!

Before JWST, there was not much data on the ionizing photon production of galaxies at high redshift. But now, I had the chance to be the first to increase the number of measurements from ~15 galaxies, to over 350! 

Personal fact: Like any undergrad student, I was very broke. So I used to work as a freelance digital artist to pay rent. I love designing characters!  



♦  SCIENCE: Marie Sk⫮odowaska-Curie Master Class (online) 06-09 Jun UCPH link
♦  ADAM 2023 in Fredericia (Annual Danish Astronomy Meeting) 07-08 Jun Link is here
♦  “First Light” Conference in Boston 12-16 Jun Link is here
♦  The SCMA Conference (Penn State University) 12-16 Jun Link is here
♦  Euclid Meeting 2023 19-23 Jun Link is here
♦  DAWN Summit 2023 26-28 Jun TBD
♦  Scientific Communication in Astronomy School 2nd Edition - Italy 02-06 Oct Link is here
♦  "Young Astronomers on Galactic Nuclei" (YAGN23) in Italy 18-20 Oct Link is here
♦ VILLUM Foundation/Young Investigator (preliminary) 08 Jun DTU link UCPH link
♦ Inge Lehmann’s Programme (DFF) 21 Jun DTU link UCPH link
♦ The Carlsberg Foundation: Semper Ardens: Accerlerate (preliminary) 01 Oct DTU link UCPH link
♦ The Carlsberg Foundation's annual call: Research Infrastructure 01 Oct DTU link UCPH link
♦ EU Horizon Europe - ERC Starting Grant (preliminary) 25 Oct DTU link UCPH link
♦ EU Horizon Europe - ERC Synergy Grant (preliminary) 08 Nov DTU link UCPH link
♦ EU Horizon Europe - ERC Consolidator Grant (preliminary) 12 Dec DTU link UCPH link

Danish Traditions & Culture

Midsummer and Graduation


Midsummer celebration in Denmark: While all of the Scandinavian and Baltic countries celebrate the summer solstice, the way and day in which each recognize this event varies. In Denmark, the solstice is tied to the feast of Saint John the Baptist, known in Denmark as Sankt Hans (“Hans” being the diminutive for Johannes, or John), who was supposedly born on June 24th. Because Danes like celebrating the eves of things that means 23 June is marked as the “Sankt Hans Aften”.


The bonfire tradition continues to this day. In the 1920’s, people began affixing a straw witch to the top of the fire as a way to remember the witch burning of the 16th and 17th centuries. You can find the bonfires and events with music around in Copenhagen, e.g. by the Lakes, in the Harbours, Nyhavn, in Frederiksberg Garden, Amager Beach and other beaches along the Danish coast line.



Graduation with white caps and the big celebration ‘road trip’ the last week of June

When Danish students graduates from the gymnasiums (high schools) some of the most sacred traditions involves the white cap with different colors of band, emblems and symbols to demonstrate where/which field the student is graduating from.

It all started in the 1920s and 1930s where students would dance around in a circle on the Kings Square in the heart of Copenhagen and around the statue ‘Hesten’. In the 1960s more citizens graduated as students than ever before, and so the tradition of driving around in city by a horse-wagon begun instead of the dance.



Today the graduation day and the hand-out of diplomas is followed with class-mates visiting each other’s houses in a big van or open wagon that is decorated with Danish beech leafs, signs and music playing on this festive ‘road-trip’ around the city.



Another tradition is also that all class-mates write little notes and quotes in each other’s caps as a “thank you and good luck in the future” for the years in High School, that they have spent together.

It is also a tradition to say ‘congratulation’ if you see a student with a white cap on - but of course not mandatory 🙂