[Astronomy seminar] Next Astro Friday seminar the 23rd/03 at 10:30 in FC61

[Astronomy seminar announcements]

Dear all,
welcome to the next astronomy seminar, Friday 23rd of March at 10:30 in FC61.
The speaker of this week is Dr. Florent Renaud from Lund Observatory.
Title and abstract can be found here https://www.albanova.se/event/weekly-astronomy-seminar-star-formation-in-evolving-galaxies-a-diverse-universality/


Welcome,
Angela & Jorrit


Spring agenda
30/03 Easter break
06/04 --
13/04 Jim Dale
20/04 Brent Groves
27/04 Mickaël Bonnefoy
04/05 Sara Bladh
11/05 Klämdag
18/05 Anastasia Fialkov
25/05 Carolina Robustini
01/06 Catherine Watkinson
08/06 Esha Kundu
15/06 Matteo Messa
22/06 Midsommar
29/06 Summer break


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Angela Adamo

Department of Astronomy
Stockholm University and Oskar Klein Centre
SE-10691 Stockholm - Sweden
tel: +46 (0)8 5537 8556
email: angela.adamo at astro.su.se<mailto:angela.adamo at astro.su.se>
http://ttt.astro.su.se/~adamo
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On 06 Mar 2018, at 17:48, Angela Adamo <angela.adamo at astro.su.se<mailto:angela.adamo at astro.su.se>> wrote:

Dear all,
welcome to the next astronomy seminar, Friday 9th of March at 10:30 in FC61.
The speaker of this week is Dr. Nathalie de Ruette from Fysikum, SU.
Title and abstract are below together with an updated spring agenda.

Welcome,
Angela & Jorrit


Formation and Destruction Mechanisms of Atomic and Molecular Ions of Astrophysical Interest.

The chain of chemical reactions leading towards life is thought to begin in molecular clouds when carbon atoms are fixed into molecules, initiating the synthesis of complex organic species. Up to 20 % of the cosmic carbon is believed to be in the form of Polycyclic Aromatic Hydrocarbons. Anions also play crucial roles in a range of astrophysical environments and planetary atmospheres. How large molecules and anions can survive and evolve in harsh environments, such as in planetary nebulae with strong UV radiation fields or in shock-heated outflows of supernovae is still not fully understood. Spectroscopic observations, combined with sophisticated astrochemical models to interpret the collected spectra, provide much of our knowledge of these processes. However, few reactions have been studied experimentally in a range of collision energies relevant for cold astrophysical environments. Uncertainties in the underlying chemical data in these models limit our understanding of the molecular universe.
In this talk, I will present some key reactions for the abundances of chemical compounds and the ionization balance in various astrophysical environments, and show results of experiments performed at DESIREE facility in Stockholm University and elsewhere to address some of these issues. Several methods used in these experiments will be briefly presented including the merged beams method and collision induced dissociation. Our reaction studies will help to provide a better basis for astrochemical models and benchmarks for future theoretical development.

16/03 Hanindyo Kuncarayakti
23/03 Florent Renaud
30/03 Easter break
06/04 Nina Almgren
13/04 Jim Dale
20/04 Brent Groves
27/04 Mickaël Bonnefoy
04/05 Sara Bladh
11/05 Klämdag
18/05 Anastasia Fialkov
25/05 Carolina Robustini
01/06 Catherine Watkinson
08/06 Esha Kundu
15/06 Matteo Messa
22/06 Midsommar
29/06 Summer break
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Angela Adamo

Department of Astronomy
Stockholm University and Oskar Klein Centre
SE-10691 Stockholm - Sweden
tel: +46 (0)8 5537 8556
email: angela.adamo at astro.su.se<mailto:angela.adamo at astro.su.se>
http://ttt.astro.su.se/~adamo
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