OAT and DAUT - SEMINAR ANNOUNCEMENT- Wedn. May 24, at 12:00 noon

[Gabriella Schiulaz]

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INAF-OSS. ASTRON. DI TRIESTE and DAUT SEMINAR
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Speaker: Giovanni Vladilo (INAF/Osservatorio Astronomico di Trieste) 

Title: Fresh evidence of dust extinction in Damped Lyman alpha systems: implications for the existence of metal-rich systems 

Date: Wednesday, May 24th, 2006 
Time: at 12:00 noon, 
Venue: Villa Bazzoni (via Bazzoni, 2) -Seminar room, ground floor
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Abstract: 
I present a study of reddening of quasars of the Sloan Digital Sky Survey 
selected on the basis of the presence of an intervening Damped Lyman alpha (DLA) system 
with detected zinc absorption lines. The results of this study suggest the existence 
of a general relation between dust extinction and metal column density valid in 
DLA systems and local interstellar clouds. I discuss the implications of this relation 
for our understanding of the metallicity distribution of DLA systems and, in particular, 
for the existence of metal-rich systems.



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For additional information on scheduled OAT seminars see:
http://adlibitum.oats.inaf.it/seminari/


PLEASE NOTE the next three seminars: 
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OATS-DAUT SEMINAR 
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Speaker: Vincenzo Antonuccio (INAF/Osservatorio Astronomico di Catania) 
Title: A Weak Lensing analysis of Abell 209 
Date: Wednesday, May 31st, 2006 
(at 12:00 noon, at VIlla Bazzoni):



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JOINT DAUT-ICTP-OATS-SISSA COLLOQUIUM 
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Speaker: Richard Bower (ICC - Durham) 
Title: Winds, Super-winds and AGN: the broken hierarchy of galaxy formation 
Date: Thursday, June 1st, 2006 
Time: 12:00 noon 
Venue: SISSA, Room D 

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OATS-DAUT SEMINAR 
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Speaker: Jason X. Prochaska (University of California Observatories) 
Title: Quasars Probing Quasars and the Surrounding IGM 
Date: Wednesday, June 7th, 2006 
(at 12:00 noon, at VIlla Bazzoni):

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Gabriella Schiulaz
segreteria OAT
Phone: 040-3199241
schiulaz at oats.inaf.it
segreteria at oats.inaf.it