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X-WR-CALDESC:Eventi per Osservatorio Astronomico di Roma
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DTSTART:20150329T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Rome:20161206T114500
DTEND;TZID=Europe/Rome:20161206T124500
DTSTAMP:20260427T144518
CREATED:20160915T090345Z
LAST-MODIFIED:20160915T090345Z
UID:4683-1481024700-1481028300@www.oa-roma.inaf.it
SUMMARY:New channels of single and binary evolution and nucleosynthesis
DESCRIPTION:In this talk I will present our new findings on an exotic group of evolved objects: post-asymptotic giant branch (post-AGB) and post-red giant branch (post-RGB) stars. These objects bear the signatures of the entire morphological and nucleosynthetic changes that occur during and prior to the red giant evolutionary phases. Therefore\, they provide excellent constraints for single and binary star evolution and nucleosynthesis. These objects have also revealed new evolutionary channels and AGB nucleosynthesis which is vital for understanding the complex chemical evolution of our Galaxy as well as external galaxies.
URL:https://www.oa-roma.inaf.it/event/seminario-8/
LOCATION:Aula Gratton
CATEGORIES:Seminari
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Rome:20161206T114500
DTEND;TZID=Europe/Rome:20161206T124500
DTSTAMP:20260427T144518
CREATED:20160915T090345Z
LAST-MODIFIED:20160915T090345Z
UID:1533-1481024700-1481028300@www.oa-roma.inaf.it
SUMMARY:New channels of single and binary evolution and nucleosynthesis
DESCRIPTION:In this talk I will present our new findings on an exotic group of evolved objects: post-asymptotic giant branch (post-AGB) and post-red giant branch (post-RGB) stars. These objects bear the signatures of the entire morphological and nucleosynthetic changes that occur during and prior to the red giant evolutionary phases. Therefore\, they provide excellent constraints for single and binary star evolution and nucleosynthesis. These objects have also revealed new evolutionary channels and AGB nucleosynthesis which is vital for understanding the complex chemical evolution of our Galaxy as well as external galaxies.
URL:https://www.oa-roma.inaf.it/event/seminario/
LOCATION:Aula Gratton
CATEGORIES:Seminari
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Rome:20161213T114500
DTEND;TZID=Europe/Rome:20161213T124500
DTSTAMP:20260427T144518
CREATED:20160729T153718Z
LAST-MODIFIED:20160729T153718Z
UID:4678-1481629500-1481633100@www.oa-roma.inaf.it
SUMMARY:Electromagnetic follow-up of gravitational wave candidates: perspectives and first results of the Italian project GRAWITA
DESCRIPTION:Detecting an electromagnetic (EM) emission associated with a gravitational wave (GW) signal is one of the main goal of the newly born gw astronomy. Merger of neutron stars and/or black holes and core-collapse of massive stars are expected to cause rapid transient EM signals like gamma-ray bursts (GRBs)\, core-collapse supernovae\, soft-gamma ray repeaters and pulsar glitches. \nThe Advanced LIGO detectors on September 14th\, for the first time\, detected a binary black hole merger (GW150914) for which a detectable electromagnetic counterpart is little expected. This detection showed that EM follow-up facilities are able to react quickly to GW signals covering radio\, optical\, near-infrared\, X-ray\, and gamma-ray wavelengths with ground- and space-based over the entire gravitational sky localization even if they have to deal with large position uncertainties up to hundreds square degrees.\nTherefore wide-field cameras and rapid follow-up observations are crucial to characterize the EM candidates and the first EM counterpart identification.\nIn this talk I want to present the activities we are currently currying on to optimize the response of the GRAWITA network of facilities to expected GW triggers and our first results. The GRAWITA project is representing an efficient operational framework capable of fast reaction on large error box triggers and direct identification and characterization of the candidates.\nAll the activities we will describe are expect to provide means and opportunities to the Italian and European astronomical communities to have a leading role in the GW astronomy and Time Domain Astronomy fields.
URL:https://www.oa-roma.inaf.it/event/electromagnetic-follow-up-of-gravitational-wave-candidates-perspectives-and-first-results-of-the-italian-project-grawita-2/
LOCATION:RM
CATEGORIES:Seminari
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Rome:20161213T114500
DTEND;TZID=Europe/Rome:20161213T124500
DTSTAMP:20260427T144518
CREATED:20160729T153718Z
LAST-MODIFIED:20160729T153718Z
UID:1349-1481629500-1481633100@www.oa-roma.inaf.it
SUMMARY:Electromagnetic follow-up of gravitational wave candidates: perspectives and first results of the Italian project GRAWITA
DESCRIPTION:Detecting an electromagnetic (EM) emission associated with a gravitational wave (GW) signal is one of the main goal of the newly born gw astronomy. Merger of neutron stars and/or black holes and core-collapse of massive stars are expected to cause rapid transient EM signals like gamma-ray bursts (GRBs)\, core-collapse supernovae\, soft-gamma ray repeaters and pulsar glitches. \nThe Advanced LIGO detectors on September 14th\, for the first time\, detected a binary black hole merger (GW150914) for which a detectable electromagnetic counterpart is little expected. This detection showed that EM follow-up facilities are able to react quickly to GW signals covering radio\, optical\, near-infrared\, X-ray\, and gamma-ray wavelengths with ground- and space-based over the entire gravitational sky localization even if they have to deal with large position uncertainties up to hundreds square degrees.\nTherefore wide-field cameras and rapid follow-up observations are crucial to characterize the EM candidates and the first EM counterpart identification.\nIn this talk I want to present the activities we are currently currying on to optimize the response of the GRAWITA network of facilities to expected GW triggers and our first results. The GRAWITA project is representing an efficient operational framework capable of fast reaction on large error box triggers and direct identification and characterization of the candidates.\nAll the activities we will describe are expect to provide means and opportunities to the Italian and European astronomical communities to have a leading role in the GW astronomy and Time Domain Astronomy fields.
URL:https://www.oa-roma.inaf.it/event/electromagnetic-follow-up-of-gravitational-wave-candidates-perspectives-and-first-results-of-the-italian-project-grawita/
LOCATION:RM
CATEGORIES:Seminari
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Rome:20161220T114500
DTEND;TZID=Europe/Rome:20161220T124500
DTSTAMP:20260427T144518
CREATED:20160915T090842Z
LAST-MODIFIED:20160915T090842Z
UID:4684-1482234300-1482237900@www.oa-roma.inaf.it
SUMMARY:Chemical properties of distant Milky Way halo stars from current and future spectroscopic surveys
DESCRIPTION:The study of elemental abundances of long-lived individual stars is one of the pillars of Galactic Archaeology\, as a powerful way for retrieving information on the stars birth environment.\nThrough this approach\, it has already been established that the inner Milky Way halo cannot have formed solely from the disruption of satellite galaxies experiencing as low an initial star formation rate as in the surviving Milky Way satellites.\nHowever\, the growing observational evidence for a dual nature of the Milky Way stellar halo raises the question of whether the elemental abundances of inner halo stars can be considered as representative of the whole Milky Way halo and if the inner and outer halo were formed through different dominant mechanisms.\nIn this talk I will present our investigation of the\nchemical properties of the outer Milky Way halo\, based on abundances of large samples of distant halo stars\, both from SDSS-DR13\nand proprietary spectroscopic campaigns at VLT\, Magellan and HET. I will conclude with a\ndiscussion of the prospects that future Galactic Archaeology surveys such as with the WHT/WEAVE spectrograph will open up for the study of the Milky Way halo properties.
URL:https://www.oa-roma.inaf.it/event/seminario-2-2/
LOCATION:Aula Gratton
CATEGORIES:Seminari
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Rome:20161220T114500
DTEND;TZID=Europe/Rome:20161220T124500
DTSTAMP:20260427T144518
CREATED:20160915T090842Z
LAST-MODIFIED:20160915T090842Z
UID:1537-1482234300-1482237900@www.oa-roma.inaf.it
SUMMARY:Chemical properties of distant Milky Way halo stars from current and future spectroscopic surveys
DESCRIPTION:The study of elemental abundances of long-lived individual stars is one of the pillars of Galactic Archaeology\, as a powerful way for retrieving information on the stars birth environment.\nThrough this approach\, it has already been established that the inner Milky Way halo cannot have formed solely from the disruption of satellite galaxies experiencing as low an initial star formation rate as in the surviving Milky Way satellites.\nHowever\, the growing observational evidence for a dual nature of the Milky Way stellar halo raises the question of whether the elemental abundances of inner halo stars can be considered as representative of the whole Milky Way halo and if the inner and outer halo were formed through different dominant mechanisms.\nIn this talk I will present our investigation of the\nchemical properties of the outer Milky Way halo\, based on abundances of large samples of distant halo stars\, both from SDSS-DR13\nand proprietary spectroscopic campaigns at VLT\, Magellan and HET. I will conclude with a\ndiscussion of the prospects that future Galactic Archaeology surveys such as with the WHT/WEAVE spectrograph will open up for the study of the Milky Way halo properties.
URL:https://www.oa-roma.inaf.it/event/seminario-2/
LOCATION:Aula Gratton
CATEGORIES:Seminari
END:VEVENT
END:VCALENDAR