Seminars and Colloquia at ESO/Santiago

For ESO and ESO-related Conferences and Workshops in Europe and Chile please check the main Conferences and Workshops page.


Broadcast of the ESO talks is available upon request.  If anyone is interested, kindly contact us via email
at least 60 min prior  to the beginning of the talk.


April 2015

20.04.15 (Monday)
12:00
"High-redshift Galaxy Proto-clusters as an Interface Between Structure, Cluster, and Galaxy Formation"
Yi-Kuan CHIANG (University of Texas at Austin)
Abstract
Close
"High-redshift Galaxy Proto-clusters as an Interface Between Structure, Cluster, and Galaxy Formation"

Yi-Kuan CHIANG (University of Texas at Austin)

Abstract

Proto-clusters, the ancestor large-scale structures of present day galaxy clusters, are ideal laboratories to study dark matter assembly, cosmic baryon cycle, galaxy growth, and environmental impacts on galaxy evolution. I will first present the LCDM predictions for the physical properties and observational signatures of galaxy proto-clusters. I will talk about our ongoing efforts to search for z>2 proto-clusters in photometric and emission line galaxy surveys. Finally, we will put cluster progenitors in the context of cluster formation and galaxy evolution, highlighting their unique roles linking scales from large to small, and epochs form active star-formation to quenching.

23.04.15 (Thursday)
15:00
"SPHERE polarimetric imaging: First results with ZIMPOL and IRDIS"
Jos DE BOER (ESO, Chile)
Abstract
Close
"SPHERE polarimetric imaging: First results with ZIMPOL and IRDIS"

Jos DE BOER (ESO, Chile)

Abstract

TBC

24.04.15 (Friday)
12:00
"Reflected light from exoplanets: The case of 51 Peg b"
Jorge MARTINS (ESO, Chile & Instituto de Astrofísica e Ciências do Espaço/Universidade do Porto, Portugal)
Abstract
Close
"Reflected light from exoplanets: The case of 51 Peg b"

Jorge MARTINS (ESO, Chile & Instituto de Astrofísica e Ciências do Espaço/Universidade do Porto, Portugal)

Abstract

The direct detection of reflected light from an exoplanet is, even in the most favourable cases, a herculean task, close to the detection limit of current observing facilities. In this talk, we will show how the Cross Correlation Function can be used to recover the minute reflected signal from an exoplanet in the optical (see Martins et al. 2013, MNRAS). We will also present the evidences for the first direct detection of the optical reflected spectrum of 51 Peg on its orbiting planet, as well as how this result can be used to tentatively infer some of the planet's characteristics as detaily described in Martins et al.(2015, A&A, in press) .

30.04.15 (Thursday)
14:00
"The circumstellar environment of young brown dwarfs" (Joint ESO/ALMA Colloquium)
Jean-Louis MONIN (Obs. de Grenoble - Univ. J. Fourier, France)
Abstract
Close
"The circumstellar environment of young brown dwarfs"

Jean-Louis MONIN (Obs. de Grenoble - Univ. J. Fourier, France)

Abstract

Young brown dwarfs (BD) have intermediate masses between low mass stars and planets and therefore occupy a unique niche in our exploration of the star and planet formation process. Evidence are growing that stars and BD share the same formation mechanism (eg. Chabrier, 2013, PP6 conference). This common formation route could even be the same for free-floating planets. Among the physical phenomena related to star formation, accretion and ejection are ubiquitous. Young Brown dwarfs present a disk frequency similar and sometimes larger than the one of their higher mass TTS counterparts (eg. Monin et al. 2010). However, the outflow phenomenon remains quasi unexplored in the substellar domain. Using the IRAM 30m telescope, we have performed a systematic search for outflow signatures in a large sample of VLMS and BD in Taurus and ρ Oph star forming regions. In the course of this survey, we have confirmed previous detections (rho-OPH 102, MHO5 ; Phan-Bao 2008, 2011) and we have discovered 2 other outflows in BDs (FUTau, Monin et al. 2013 ; BD Tau 6, Monin et al. 2014, CS 18 conference).
I will also present follow-up observations on the IRAM interferometer that have revealed the structure of some of these outflows with a spatial resolution ~ 1 arcsec.


Future Talks

Choose your preferred calendar format to stay informed