'Rich stars' diaporamas de présentation

734 views • 61 slides

Early Galactic Nucleosynthesis: The Impact of HST/STIS Spectra of Metal-Poor Stars

Early Galactic Nucleosynthesis: The Impact of HST/STIS Spectra of Metal-Poor Stars. Chris Sneden University of Texas. John Cowan Jim Truran Scott Burles Tim Beers Jim Lawler Inese Ivans Jennifer Simmerer Caty Pilachowski Jennifer Sobeck Betsy den Hartog David Lai Scott Burles

652 views • 49 slides

Modelling of spectra and model atmospheres of evolved stars

(A talk from the parallel world) Yakiv V.Pavlenko Main astronomical observatory 27 Sabolotnoho, Kyiv, Ukraine www.mao.kiev.ua/staff/yp. Modelling of spectra and model atmospheres of evolved stars. Collaborators. Carlos Abia (UG) Greg Harries (UCL) Yakovina Larisa(MAO)

561 views • 44 slides

Multiple stellar populations in Globular Clusters - A progress report

391 views • 34 slides

Studying circumstellar envelopes with ALMA

385 views • 30 slides

White Dwarf Spectra and Atmospheres

White Dwarf Spectra and Atmospheres. Tala Monroe A540 Stellar Atmospheres Apr. 6, 2005. Outline. History Current Classification Scheme Spectra Atmospheres Spectral Evolution Future Work. History. Bessell (1844)-variability in proper motions of Sirius and Procyon ? dark companions

509 views • 27 slides

Multiple stellar populations and the horizontal branch of globular clusters

388 views • 23 slides

Multiple stellar populations and the horizontal branch of globular clusters

237 views • 23 slides

The DDO photometric system

The DDO photometric system. It was developed at the D avid D unlap O bservatory near Toronto by McClure & van den Bergh (1968) Intermediate band system, filter defined: 48 (at ?4886), 45 (at ?4517), 42 (at ?4257), 41 (at ?4166), 38 b (at ?3815) and 35 (at ?3460). The DDO photometric system.

431 views • 22 slides

C-enhanced stars in the HERES survey: preliminary results

Sara Lucatello-INAF OAPD. C-enhanced stars in the HERES survey: preliminary results. Hamburg/ESO R-processe Enhanced Star survey (HERES):. Aimed r-process rich metal poor stars: -Cosmo-nucleo-chronology -Allow to study nature of r-process; Very challenging (extra rare objects)!!.

293 views • 17 slides

Abundance Patterns to Probe Stellar Nucleosynthesis and Chemical Evolution

Abundance Patterns to Probe Stellar Nucleosynthesis and Chemical Evolution. Francesca Primas. Setting the Stage. 1. High-z universe, i.e. looking at objects in their infancy stages. DLA: dominant reservoir of neutral baryons measure the mean metallicity in HI (5< z < 0).

243 views • 15 slides

Abundance Patterns to Probe Stellar Nucleosynthesis and Chemical Evolution

Abundance Patterns to Probe Stellar Nucleosynthesis and Chemical Evolution. Francesca Primas. Setting the Stage. 1. High-z universe, i.e. looking at objects in their infancy stages. DLA: dominant reservoir of neutral baryons measure the mean metallicity in HI (5< z < 0).

335 views • 15 slides