'Line ratios' presentation slideshows

Jet-Gas Interactions in Seyfert Galaxies

Jet-Gas Interactions in Seyfert Galaxies. Mark Whittle (Virginia) David Rosario (Virginia) John Silverman (Virginia) Charlie Nelson (Drake) Andrew Wilson (Maryland). Outline. Brief review of : AGN & Jets & Emission lines Reasons to study jet-gas interactions (JGI)

662 views • 56 slides

Detecting the MRI accretion-disc instability in action

Detecting the MRI accretion-disc instability in action. Peter Wheatley University of Warwick. Movie: James Murray. Magneto-rotational instability (MRI). Balbus & Hawley 1991. Adapted from Balbus & Hawley 1998. Miller & Stone 2000. Hawley et al. Numerical MRI simulations.

764 views • 53 slides

AY202a Galaxies & Dynamics Lecture 14: Galaxy Centers & Active Galactic Nuclei

AY202a Galaxies & Dynamics Lecture 14: Galaxy Centers & Active Galactic Nuclei. Galaxy Centers. History AGN Discovered way back when --- Fath 1908 Broad lines in NGC1068 Seyfert 1943 Strong central SB correlates with broad lines

636 views • 49 slides

AY202a Galaxies & Dynamics Lecture 14: Galaxy Centers & Active Galactic Nuclei

AY202a Galaxies & Dynamics Lecture 14: Galaxy Centers & Active Galactic Nuclei. Galaxy Centers. History AGN Discovered way back when --- Fath 1908 Broad lines in NGC1068 Seyfert 1943 Strong central SB correlates with broad lines

597 views • 49 slides

Current Topics

Current Topics. Lyman Break Galaxies Dr Elizabeth Stanway (E.R.Stanway@Bristol.ac.uk). Topic Summary. Star Forming Galaxies and the Lyman- ? Line Lyman Break Galaxies at z <4 Lyman Break Galaxies at z >4 Reionisation and the Star Formation History of the Universe

714 views • 47 slides

Abundances in the BLR

Abundances in the BLR. Nathan Stock February 19, 2007. Motivation. Metallicity affects properties of the AGN (Ferland, 1996) Opacity Kinematics Structure Outflows enrich IGM (Friaca, 1998) Dust increases obscuration of high-z objects. Motivation.

490 views • 36 slides

Outline

THE EMISSION LINE RATIOS: A TOOL FOR INVESTIGATING THE PHYSICS OF THE LINE EMITTING REGIONS IN AGN Dragana Ili ?, Jelena Kova?evi?, Luka Popovi?. 1. Department of Astronomy, Faculty of Mathematics , Belgrade 2. Astronomical Observatory Belgrade. Outline. AGN properties emission line regions

390 views • 25 slides

New perspectives on B star X-ray emission: The high-resolution X-ray spectra of Spica and ? Cen

New perspectives on B star X-ray emission: The high-resolution X-ray spectra of Spica and ? Cen. Collaborators on both projects: Nathan Miller Joe Cassinelli ? Cen Ton Raassen Emre Tepedelenlioglu Rolf Mewe Spica Ron Reynolds Joe MacFarlane Nate Hall.

415 views • 25 slides

Estimating the Chromospheric Absorption of Transition Region Moss Emission

346 views • 23 slides

Stars science questions

Stars science questions. Origin of the Elements Mass Loss, Enrichment High Mass Stars Binary Stars . Origin of the Elements. Key questions What is the composition of the earliest generation of stars? What do abundance patterns tell us about nucleosynthesis?

364 views • 21 slides

Sun

315 views • 21 slides

Modelling the Broad Line Region

Modelling the Broad Line Region. Andrea Ruff Rachel Webster University of Melbourne. Outline. The primary goal is to model the geometry, dynamics and physical conditions of the BLR What do we know about the BLR Line ratios, stratification of ionisation Modelling with Cloudy

378 views • 19 slides

Monte Carlo Photoionization Simulations of Diffuse Ionized Gas

315 views • 18 slides

Simulation of CHANDRA X-Ray Spectral Observations of z Pup (O4 If)

Simulation of CHANDRA X-Ray Spectral Observations of z Pup (O4 If). J. J. MacFarlane, P. Wang Prism Computational Sciences Madison, WI J. P. Cassinelli, N. Miller University of Wisconsin Madison, WI D. H. Cohen Swarthmore College Swarthmore, PA. Observed spectrum in Mg K-shell region.

320 views • 17 slides

Simulation of CHANDRA X-Ray Spectral Observations of z Pup (O4 If)

Simulation of CHANDRA X-Ray Spectral Observations of z Pup (O4 If). J. J. MacFarlane, P. Wang Prism Computational Sciences Madison, WI J. P. Cassinelli, N. Miller University of Wisconsin Madison, WI D. H. Cohen Swarthmore College Swarthmore, PA. Observed spectrum in Mg K-shell region.

264 views • 17 slides

A 500 ks Chandra/HETG observation of EX Hya

A 500 ks Chandra/HETG observation of EX Hya. Gerardo J. M. Luna (SAO) ? Nancy Brickhouse (SAO) ? John Raymond (SAO) ? Chris Mauche (LLNL) ? Daniel Proga (UNLV) ? Danny Steeghs (University of Warwick) ?. Tucson, 2009. EX Hya. - X-rays observations : 50 ks Chandra/HETG in 2000.

298 views • 12 slides

Light element abundances in NGC 5128 from planetary nebulae

Light element abundances in NGC 5128 from planetary nebulae. Jeremy R. Walsh, ESO George H. Jacoby, WIYN Reynier Pelletier, Kapteyn Lab., Groningen Nic A. Walton, IoA, Cambridge. Planetary nebulae.

282 views • 11 slides

Trends in the Chandra X-Ray Spectra of O and Early B Stars

Trends in the Chandra X-Ray Spectra of O and Early B Stars. June 24, 2008. Spectra of Stars. We know that spectra result from physical processes within stars. They often reflect physical properties of the stars that created them. ex. Optical Spectra. X-Ray Spectra of O and Early B Stars.

268 views • 10 slides

Imaging Diagnostics at the H-1 National Plasma Fusion Research Facility

Imaging Diagnostics at the H-1 National Plasma Fusion Research Facility. Because of its relatively unhindered viewing access, the H-1 heliac is well suited for the development of plasma imaging systems.

113 views • 1 slides

3D SPECTROSCOPY OF HERBIG HARO OBJECTS

140 views • 1 slides