[Astronomy seminar] Astronomy Seminar Friday 24/4: 10:30 zoom: Michael Maseda

Mon Apr 20 09:02:50 CEST 2020

Dear all,

On Friday the 24th of April we have the next Astronomy seminar remotely via zoom at 10:30.

Our speaker is Michael Maseda from the University of Leiden (The Netherlands)

Title: Spectroscopy of Galaxies in the Early Universe: A JWST Sneak Peek

Abstract: Even though the first population of star-forming galaxies at z > 6 have been discovered in the deepest imaging campaigns with the Hubble Space Telescope, the redshift and intrinsic faintness of these objects currently present a challenge for spectroscopy. As such, relatively little is known about the physical conditions in galaxies at the earliest cosmic times and the limited observations we do have pose challenges to current stellar population models. We can, however, make progress on these issues with spectroscopic observations of “extreme” galaxies at lower redshifts (1 < z < 6). I will highlight my recent work in this direction from cutting edge facilities such as MUSE on the VLT as well as ultra-deep HST imaging and spectroscopy. In one particular region, the Hubble Ultra Deep Field, I have used these two facilities to construct a census of star-forming galaxies to unprecedented depths. This includes an abundant population of galaxies with physical properties similar to those at the highest redshifts, and a hitherto invisible population that represent the faintest and lowest-mass galaxies ever discovered at cosmological distances. Detailed studies of these populations serve as a preview of science in the JWST era, shedding light onto the galaxy formation process and cosmic Reionization.

We will have the colloquium using zoom. You will find the invitation at the end of this email.

Some guidelines:

1) Join the session with your microphone muted.

2) When you have a question, press the “raise hand button” and wait till you are asked to ask your question. 

3) The session will be online from 10:20, please join at least a few minutes early as we would like to start 10:30 sharp.

We hope to see all of you there!

Arjan and Cristina.

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Arjan Bik is inviting you to a scheduled Zoom meeting.

Topic: Astronomy colloquium April 24
Time: Apr 24, 2020 10:30 AM Stockholm

Join Zoom Meeting
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Meeting ID: 635 7189 6060
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Dr. Arjan Bik
Stockholm University
AlbaNova University Center
Department of Astronomy
SE-106 91 Stockholm - Sweden
Tel: +46 (0) 85537 8549
https://www.su.se/english/profiles/abik
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