Japan-Italy Mini-WorkshopJapan-Italy Mini-Workshop14-16 Jan, 200914-16 Jan, 2009

Center for Computational Sciences, Center for Computational Sciences, University of TsukubaUniversity of Tsukuba

14 Jan14 Jan13:25-13:30 Opening Remarks (Umemura)13:25-13:30 Opening Remarks (Umemura)13:30-15:00 Andrea Ferrara13:30-15:00 Andrea Ferrara

The Quest for First StarsThe Quest for First Stars breakbreak15:30-16:00 Hajime Susa15:30-16:00 Hajime Susa

Star Formation in Forming Disk Galaxies Under UVBStar Formation in Forming Disk Galaxies Under UVB16:00-16:30 Kenji Hasegawa16:00-16:30 Kenji Hasegawa

Radiative Regulation of Population III Star FormationRadiative Regulation of Population III Star Formation16:30-17:00 Umberto Maio16:30-17:00 Umberto Maio

The first light in the Universe and its consequencesThe first light in the Universe and its consequences15 Jan15 Jan10:00-10:30 Naoki Yoshida10:00-10:30 Naoki Yoshida

Formation of Primordial StarsFormation of Primordial Stars10:30-11:00 Kazuyuki Omukai10:30-11:00 Kazuyuki Omukai

Low-metallicityStar FormationLow-metallicityStar Formation11:00-11:30 Toru Tsuribe11:00-11:30 Toru Tsuribe

Cloud Fragmentation via filament formationCloud Fragmentation via filament formation lunchlunch13:30-14:00 Raffaella Schneider13:30-14:00 Raffaella Schneider

Dark matter, dust and CMB: adding complications to the “canonical” scenarioDark matter, dust and CMB: adding complications to the “canonical” scenario14:00-14:30 Takashi Hosokawa14:00-14:30 Takashi Hosokawa

Protostellar Evolution and Final Stellar Masses in Low-Z EnvironmentsProtostellar Evolution and Final Stellar Masses in Low-Z Environments14:30-15:00 Takashi Okamoto14:30-15:00 Takashi Okamoto

The baryon fraction of The baryon fraction of CDM halos in reionized universeCDM halos in reionized universe

Program

15:00-15:30 Hidenobu Yajima15:00-15:30 Hidenobu YajimaThe Contribution of Lyman alpha Emitters and Lyman Break Galaxies to the IGM Ionization The Contribution of Lyman alpha Emitters and Lyman Break Galaxies to the IGM Ionization at High Redshiftsat High Redshifts

breakbreak16:00-16:30 Marcos Valdes16:00-16:30 Marcos Valdes

Investigating Reionization and Dark Matter through HI 21 cm line radiationInvestigating Reionization and Dark Matter through HI 21 cm line radiation16:30-17:00 Ikko Shimizu16:30-17:00 Ikko Shimizu

Theoretical Model of Lyman Alpha Emitters and the Relation to Multi-WavelengthTheoretical Model of Lyman Alpha Emitters and the Relation to Multi-Wavelength ObservationsObservations

17:00-17:30 Masayuki Umemura17:00-17:30 Masayuki UmemuraThe Collapse of First Objects driven by Dark Matter CuspsThe Collapse of First Objects driven by Dark Matter Cusps

dinner 18:30-dinner 18:30-  16 Jan16 Jan10:00-10:30 Nozomu Tominaga10:00-10:30 Nozomu Tominaga

Core-Collapse Supernovae – Early or high redshift universe –Core-Collapse Supernovae – Early or high redshift universe –10:30-11:00 Kunihito Ioka10:30-11:00 Kunihito Ioka

Gamma Ray BurstGamma Ray Burst11:00-11:30 Susumu Inoue11:00-11:30 Susumu Inoue

Can We Search for the First Stars Using GRBs?Can We Search for the First Stars Using GRBs? lunchlunch13:30-14:00 Takaya Nozawa 13:30-14:00 Takaya Nozawa

Nature of Dust in the Early UniverseNature of Dust in the Early Universe14:00-14:30 Takuya Akahori 14:00-14:30 Takuya Akahori

Merging Galaxy Clusters – Abell 399 and Abell 401Merging Galaxy Clusters – Abell 399 and Abell 40114:30-15:00 Masao Mori 14:30-15:00 Masao Mori

15:00-16:00 Discussion (Umemura)15:00-16:00 Discussion (Umemura)

Presentation FilesPresentation Files

http://www.ccs.tsukuba.ac.jp/people/umemura/Japan-Italy09/http://www.ccs.tsukuba.ac.jp/people/umemura/Japan-Italy09/

Formation of the First Generation of Galaxies: Formation of the First Generation of Galaxies: Strategy for the “Observational Corroboration” of Physical ScenariosStrategy for the “Observational Corroboration” of Physical Scenarios

第一世代銀河の形成： 物理的シナリオの“観測的実証”へ向けての戦略第一世代銀河の形成： 物理的シナリオの“観測的実証”へ向けての戦略

December 1-6, 2003, Niigata University, JAPANDecember 1-6, 2003, Niigata University, JAPAN

First StarFirst StarPhysicsPhysics dark matter effectdark matter effect fragmentation processfragmentation process binary formationbinary formation runaway & accretionrunaway & accretion magnetic fieldsmagnetic fields second generationsecond generation

critial metallicity, trigerred SF, UVcritial metallicity, trigerred SF, UV H2/HD coolingH2/HD cooling contribution to reionizationcontribution to reionization

ObservationsObservations NIRBNIRB H2 emissionH2 emission GRBsGRBs

+ decay/annihilation+ decay/annihilation

Pop III.2, Pop II.5Pop III.2, Pop II.5

spiral single star⇒spiral single star⇒ bar/ring fragmentation⇒bar/ring fragmentation⇒

Galaxy Formation & ReionizationGalaxy Formation & ReionizationPhysicsPhysics first (small) galaxiesfirst (small) galaxies UVB effectUVB effect gas stripping by shockgas stripping by shock SFH & FeedbackSFH & Feedback on-going TsuCube on-going TsuCube metal enrichment (mixing, outflow) metal enrichment (mixing, outflow) formation of SMBHsformation of SMBHs

ObservationsObservations H2 in DLAH2 in DLA lensed QSOslensed QSOs UVB historyUVB history proximity effect of LBGsproximity effect of LBGs dispersion of GRB radio emissiondispersion of GRB radio emission LL/H/H ratio for double reionization ratio for double reionization

Cosmological RT Comparison ProjectCosmological RT Comparison Project

IGM Metal Enrichment & DustIGM Metal Enrichment & DustPhysicsPhysics cosmic chemical evolutioncosmic chemical evolution galactic chemical evolutiongalactic chemical evolution metal production by SNemetal production by SNe metal mixing processmetal mixing process dust outflowdust outflow dust formation/destructiondust formation/destruction

formation - nucleation, condensationformation - nucleation, condensation destruction - sputtering, shatteringdestruction - sputtering, shattering

metal depletion efficiencymetal depletion efficiency

ObservationsObservations abundance pattern of metal-poor starsabundance pattern of metal-poor stars metallicity of IGMmetallicity of IGM metal distribution in galaxiesmetal distribution in galaxies

PISN problemPISN problem