'Metallicity' diaporamas de présentation

The Cosmic Star Formation

The Cosmic Star Formation. and Metallicity History. Lisa Kewley Hubble Fellow U. Hawaii. with C. Kobulnicky (U.Wyoming), S. Ellison (U. Vic), M. Geller (CfA), R. Jansen (ASU). Summary. Motivation Star Formation Rates Cosmic Star Formation History Metallicity diagnostics

1.01k views • 69 slides

Two Distinct Populations in Dwarf Spheroidal Galaxies

Sagittarius Dwarf Galaxy (HST, NASA, ESA). Two Distinct Populations in Dwarf Spheroidal Galaxies. In current favorite ?-dominated CDM cosmology, small objects form first, and larger systems are built up by the assembly of smaller systems. Therefore, dwarf spheroidal galaxies might be the

751 views • 50 slides

Metallicity: A Smoking Gun for Gas Flows in Mergers

Metallicity: A Smoking Gun for Gas Flows in Mergers. Lisa Kewley U. Hawaii. Margaret Geller (SAO), Betsy Barton (UC Irvine). Summary. Motivation Metallicity diagnostics Luminosity-Metallicity Relation Central Star Formation Blue Bulges Merger Models

591 views • 45 slides

Host Galaxies of Gamma-Ray Bursts

Host Galaxies of Gamma-Ray Bursts. Emily Levesque University of Colorado at Boulder March 15, 2012. COLLABORATORS. Lisa Kewley , Kirsten Larson , H . Jabran Zahid. Edo Berger, Ryan Chornock , Alicia Soderberg. Andrew Fruchter , John Graham , Claus Leitherer. Megan Bagley.

469 views • 31 slides

Understanding Metallicity at High Redshift Universe

Understanding Metallicity at High Redshift Universe. KenTaro Motohara ( IoA , Univsersity of Tokyo). Gas Phase Metallicity. Gas Phase Metallicity (Oxygen Abundance) is crucial to understand galaxy formation/evolution, as it traces the previous star formation history.

387 views • 26 slides

The Galactic Habitable Zone

The Galactic Habitable Zone. Guillermo Gonzalez Iowa State University. Fermilab. Acknowledgements: Don Brownlee Peter Ward. August 21, 2002. Starting Assumptions. Chemical life requiring carbon and liquid water,

487 views • 25 slides

Metal Enrichment Processes

389 views • 24 slides

Constraining Evolving Metallicities in high-z ULIRGs

Constraining Evolving Metallicities in high-z ULIRGs. Susannah Alaghband-Zadeh Scott Chapman Institute of Astronomy, Cambridge. Outline. Background on Metallicity [ F(NeIII )/F(OII)] as a metallicity indicator Mass-Metallicity results in high- z ULIRGs Simulations and future.

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The Relation between Atomic and Molecular Gas in the Outer Disks of Galaxies

The Relation between Atomic and Molecular Gas in the Outer Disks of Galaxies Jonathan Braine Observatoire de Bordeaux. with ... N. Brouillet, E. Gardan , F. Herpin, A. Ferguson. Why care about the outer disk? -- Dark Matter -- reservoir of matter for galactic evolution

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Dwarf Spheroidals and Reionization: Is There a Link?

300 views • 19 slides

Metallicity Evolution of Active Galactic Nuclei

286 views • 18 slides

Luminosity and Spectra of Young Jupiters Jonathan J. Fortney University of California, Santa Cruz

310 views • 18 slides

Periodic Trends

Periodic Trends. Review. The elements of the P. T. are placed into: rows by the number of energy levels they have. groups by the number of valence electrons they have. blocks by what kind of sublevel they are filling. Atoms can gain or lose electrons.

281 views • 15 slides

COSMIC DOWNSIZING and AGN METALLICITY at HIGH REDSHIFT

COSMIC DOWNSIZING and AGN METALLICITY at HIGH REDSHIFT. Roberto Maiolino INAF - Oss. Arcetri & Oss. Roma Tohru Nagao INAF - Oss. Arcetri & NAOJ Alessandro Marconi INAF - Oss. Arcetri. Mass-Metallicity relation in galaxies at z=0. Tremonti et al. 2004. QSOs. QSOs.

306 views • 14 slides

2012/01/23

Galactic Astronomy ??????? I Lecture 3-4: Chemical evolution of galaxies Seminar: Erb et al. 2006, ApJ, 644, 813 Lecture:. 2012/01/23. Gas consumption and rise of metallicities of galaxies:. Erb. 2008, ApJ, 674, 151. Mass-metallicity relation of z~3 LBGs:

290 views • 13 slides

First Unbiased Estimates of the Metallicity and Star-Formation Activity of Lyman Alpha Emitters

First Unbiased Estimates of the Metallicity and Star-Formation Activity of Lyman Alpha Emitters. Kimihiko Nakajima ( U. Tokyo ) - Co-Investigators - Masami Ouchi, Kazuhiro Shimasaku, Yoshiaki Ono (U. Tokyo) , J. Lee(Carnegie), C. Ly(STScI), D. Dale(U. Wyoming),

201 views • 13 slides

Ultra-Faint Dwarf Galaxies as a Test of Early Enrichment and Metallicity-Dependent Star Formation

Ultra-Faint Dwarf Galaxies as a Test of Early Enrichment and Metallicity-Dependent Star Formation. Konstantinos Tassis , Nickolay Gnedin , Andrey Kravtsov. M * -Z relation: quite flat for , steepen for lower masses, become less steep for dwarf galaxies

232 views • 10 slides

6.4.1 Globular Cluster Ages

6.4.1 Globular Cluster Ages. Hansung B. Gim Dep. of Astronomy. Turnoff Point Ages. Berghbusch & van den Bergh (1992). i) m app of the turnoff point ii) distance from MS-fitting or RR Lyrae iii) metallicity. Isochrone Fitting. The ?V Method.

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5.1 Stellar evolution and the CMD

5.1 Stellar evolution and the CMD. 2007. 3.19 Skarma Kim. Contents. 5.1.4 Bounding curves in the CMD Box 5.3 The Hayashi Line 5.1.5 Dependence of CMD upon metallicity Box 5.4 Ultraviolet Excess 5.1.6 The cosmic helium abundance. de Jager limt. de Jager limt. The Hayashi Line.

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Is Our Universe Accelerating Symmetrically?

Is Our Universe Accelerating Symmetrically? Joseph M. Fedrow, The Evergreen State College, Olympia WA 98505. I. Introduction II. Theory III. Method IV. Results V. Conclusions .

92 views • 1 slides