Arcetri Astrophysical Observatory

AstroBigné seminars

Lists of bigné's Current season - Previous seasons -- Sign up for a presentation (doodle link)!!!


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The Astrobigné Organizing Committee is currently composed of Nicoletta Sanna (This email address is being protected from spambots. You need JavaScript enabled to view it., reference person for the galactic group), Antonino Marasco (This email address is being protected from spambots. You need JavaScript enabled to view it., for the extragalactic group), and Paola di Ninni (This email address is being protected from spambots. You need JavaScript enabled to view it. for the technological area), supported by our director Maria Sofia Randich and by the invaluable help of Emanuela Masini with the "real" stuff.


The Astrobigné concept:

Astrobigné is a series of short seminars that are held at the Osservatorio, with the goal of interconnecting the community of people working here, spreading new ideas and results, creating and reinforcing synergies between groups and indiduals. As such, Astrobigne's are meant to be accessible to a broad audience, including astronomers and technology staff, from senior researchers to students. Not by chance, the name "bigné" was chosen to designate something delicious, attractive, quick to grasp and easy to "eat".

In practice, the astrobigne talks:

  • must be short (10 minutes plus 5 for open discussion, strict, 6-8 slides at most)
  • must present only 1-2 key points that people can assimilate quickly should be aimed at triggering later discussions, collaboration, and future activities.
  • at this aim, can also present ongoing work with intermediate results can cover a broad range of topics, including astronomy, technology, historic research, public outreach, organization etc...
  • will NEVER present a general overview of the subject and a complete account of the speaker's work
  • are given in English whenever possible (this is not because we don't love Italian, but we all understand that English is our professional language to be used to foster international collaborations. Not to mention that here usually are non-Italians in the audience).

Astrobigne's take place on Tuesdays, every two weeks in the main auditorium of OAArcetri (Aula A). We usually have two bigne'-talks (10+5minutes each), selected by the organizing committee in order to cover as many different areas of interest as possible. Before the talks, at 11:45, we normally meet in Aula A to socialize and eat real bigne's (pastries!). The talks start at noon, but everybody is strongly advised to come by 11:45 so not to miss the... beginning of the talks!

UPDATE: due to the COVID-19 outbreak, Astrobigne's are now held remotely via Google Meet at meet.google.com/wet-ivsv-axp. But do not worry, real bigne's will be back soon!


 Next Astrobigné: Tuesday Nov 24th at 12:00h

Seyma Mercimek  - Chemical diversity of Class I protostars: A bridge between protostars and planet-forming disk

Understanding how molecular complexity varies in Sun-like star forming regions is mandatory to comprehend whether the chemical composition of the protostellar stages is inherited by protoplanetary disks and planets. In this perspective, our ambitious overall goal is to follow the chemical evolution from the earliest protostellar stages to the relics of our pristine Solar System, i.e. comets. We investigate the chemical composition of Class I protostars, with a typical age of 10^5 yr. Class I sources represent a bridge between Class 0 protostars (about 10^4 yr), where the bulk of the material that eventually form the protostar is still in the envelope, and the protoplanetary disks (10^6 yr). The importance of the Class I stage has been recently strengthened by recent ALMA images showing that planet formation occurs already in disks with ages < 1 Myr. Unfortunately, only very few Class I sources, have been chemically characterized through spectral survey at millimeter wavelengths. Therefore, we are still far to conclude if Class I protostars are also a bridge from a chemical point of view.
In this talk, I will take you on a journey into the Class I world, showing the recent results on this key evolutionary stage leading to the formation of a Solar-like planetary system.


 

Archive of past Astrobigné