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Tracing Protostellar Evolution by Observations of Ices PowerPoint PPT Presentation
Tracing Protostellar Evolution by Observations of Ices - Tracing Protostellar Evolution by Observations of Ices Adwin Boogert Geoff Blake Michiel Hogerheijde Caltech/OVRO Caltech/OVRO Univ. of Arizona Topics Introduction: a ...
Tracing Protostellar Evolution by Observations of Ices Adwin Boogert Geoff Blake Michiel Hogerheijde Caltech/OVRO Caltech/OVRO Univ. of Arizona Topics Introduction: a ...
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Protostellar spin evolution PowerPoint PPT Presentation
Protostellar spin evolution - The sonic point. Eliminate using: To get: Sonic point: both LHS and RHS vanish at ... through sonic point; putting u=cs and r=rc. gives C = -3. 'Breezes' ...
The sonic point. Eliminate using: To get: Sonic point: both LHS and RHS vanish at ... through sonic point; putting u=cs and r=rc. gives C = -3. 'Breezes' ...
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A MASSIVE PROTOSTELLAR DISK PowerPoint PPT Presentation
A MASSIVE PROTOSTELLAR DISK - A MASSIVE PROTOSTELLAR DISK
A MASSIVE PROTOSTELLAR DISK
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Irradiated Protostellar Jets PowerPoint PPT Presentation
Irradiated Protostellar Jets - Inverse P Cygni profile in H. low-density in circumstellar material ... Taurus & Upper Sco: ~3-5Myr. Orion: ~5Myr. TW Hydrae Association : ~10Myr. Oph. IC 2391: ...
Inverse P Cygni profile in H. low-density in circumstellar material ... Taurus & Upper Sco: ~3-5Myr. Orion: ~5Myr. TW Hydrae Association : ~10Myr. Oph. IC 2391: ...
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Tracing Protostellar Evolution by Observations of Ices PowerPoint PPT Presentation
Tracing Protostellar Evolution by Observations of Ices - gas/solid ratio increases (van Dishoeck et al. 1997) Detailed modelling gas phase mm-wave observations (van der Tak et al. 2000) Solid 13CO2: ...
gas/solid ratio increases (van Dishoeck et al. 1997) Detailed modelling gas phase mm-wave observations (van der Tak et al. 2000) Solid 13CO2: ...
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Studying Protostellar and Debris Disks with BLISS PowerPoint PPT Presentation
Studying Protostellar and Debris Disks with BLISS - Dust continuum emission peaks in FIR/submm out to z 5 ... BICE Galactic maps of CII at very low spectral resolution (top) and dust emission (bottom) ...
Dust continuum emission peaks in FIR/submm out to z 5 ... BICE Galactic maps of CII at very low spectral resolution (top) and dust emission (bottom) ...
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Magnetorotational Instability in Protostellar Discs PowerPoint PPT Presentation
Magnetorotational Instability in Protostellar Discs - Convective turbulence (Lin & Papaloizou 1980, Ryu & Goodman 1992, ... Ampere's Law. Ohm's Law. Conservation of momentum. Disc Model. Vertical Stratification ...
Convective turbulence (Lin & Papaloizou 1980, Ryu & Goodman 1992, ... Ampere's Law. Ohm's Law. Conservation of momentum. Disc Model. Vertical Stratification ...
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Modeling of Deep Submillimeter Images of the Pre-protostellar PowerPoint PPT Presentation
Modeling of Deep Submillimeter Images of the Pre-protostellar - The FWHM intensity contour of the 1200, 850, 450 m maps are very similar and ... The reduced chi-squared intensity profiles for a grid of models with varying ...
The FWHM intensity contour of the 1200, 850, 450 m maps are very similar and ... The reduced chi-squared intensity profiles for a grid of models with varying ...
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Interferometer Observations of Dense Gas in Protostellar Clusters PowerPoint PPT Presentation
Interferometer Observations of Dense Gas in Protostellar Clusters - NH3 emission shows excellent (but not perfect) correspondence with dust continuum emission ... Tracing Dense Core Structure with NH3. NH3 (1,1) in Oph B ...
NH3 emission shows excellent (but not perfect) correspondence with dust continuum emission ... Tracing Dense Core Structure with NH3. NH3 (1,1) in Oph B ...
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Protostellar Outflows, Feedback and Turbulence Looking to HEDLA 9 PowerPoint PPT Presentation
Protostellar Outflows, Feedback and Turbulence Looking to HEDLA 9 - Turbulence needed to maintain pressure support for ... as a Route to Turbulence ... 'Turbulence is non-linear fluid motion resulting in the excitation ...
Turbulence needed to maintain pressure support for ... as a Route to Turbulence ... 'Turbulence is non-linear fluid motion resulting in the excitation ...
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The molecular jet driving the HH212 protostellar outflow PowerPoint PPT Presentation
The molecular jet driving the HH212 protostellar outflow - The little blue/red overlap in each lobe despite the jet lies close to the plane ... The inner jet (Blue 2, Red 2) does not show signs of velocity gradient. ...
The little blue/red overlap in each lobe despite the jet lies close to the plane ... The inner jet (Blue 2, Red 2) does not show signs of velocity gradient. ...
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Submillimeter Array observations of the L1157 protostellar jet PowerPoint PPT Presentation
Submillimeter Array observations of the L1157 protostellar jet - Academia Sinica Institute of Astronomy and Astrophysics. ASIAA, Taiwan. Laurent Loinard ... Two cavities related with different ejection events (C1 older than C2) ...
Academia Sinica Institute of Astronomy and Astrophysics. ASIAA, Taiwan. Laurent Loinard ... Two cavities related with different ejection events (C1 older than C2) ...
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Protostellar mass radius relations for accretion rates of 105 M yr1 left, Palla PowerPoint PPT Presentation
Protostellar mass radius relations for accretion rates of 105 M yr1 left, Palla - ... 5 M yr-1 (left, Palla & Stahler 1991) and 10-5 M yr-1 and 10-4 M yr-1 (right, ... Theoretically-computed birthline (heavy line) along with evolutionary tracks for ...
... 5 M yr-1 (left, Palla & Stahler 1991) and 10-5 M yr-1 and 10-4 M yr-1 (right, ... Theoretically-computed birthline (heavy line) along with evolutionary tracks for ...
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Xray and optical emission in protostellar jets: model predictions and comparison with observations PowerPoint PPT Presentation
Xray and optical emission in protostellar jets: model predictions and comparison with observations - Recently X-ray emission from HH has been detected (Chandra and XMM-Newton) ... (XMM-Newton/EPIC-pn) Heavy jet: 1. M 10: too low LX ( 1028 erg/s) M 100: too ...
Recently X-ray emission from HH has been detected (Chandra and XMM-Newton) ... (XMM-Newton/EPIC-pn) Heavy jet: 1. M 10: too low LX ( 1028 erg/s) M 100: too ...
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SMA Observations of the HH 212 Protostellar System Chin-Fei Lee, Paul P.T. Ho, Naomi Hirano, Henrik Beuther, Tyler L. Bourke, Hsien Shang, PowerPoint PPT Presentation
SMA Observations of the HH 212 Protostellar System Chin-Fei Lee, Paul P.T. Ho, Naomi Hirano, Henrik Beuther, Tyler L. Bourke, Hsien Shang, - a) A flattened envelope is seen in C18O (J=2-1) (red image) surrounding the ... supported (accretion) disk is expected to form within the envelope at ~ 70 AU. ...
a) A flattened envelope is seen in C18O (J=2-1) (red image) surrounding the ... supported (accretion) disk is expected to form within the envelope at ~ 70 AU. ...
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Are Protostellar Jets Spinning ChinFei Lee, Paul P'T' Ho, Aina Palau, Naomi Hirano, Tyler L' Bourke, PowerPoint PPT Presentation
Are Protostellar Jets Spinning ChinFei Lee, Paul P'T' Ho, Aina Palau, Naomi Hirano, Tyler L' Bourke, - The innermost pair of knots are only at 500 AU away from the protostar. These knots likely trace the internal shocks in the jet produced by a periodical ...
The innermost pair of knots are only at 500 AU away from the protostar. These knots likely trace the internal shocks in the jet produced by a periodical ...
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Neal Turner Jet Propulsion Laboratory, California Institute of Technology PowerPoint PPT Presentation
Neal Turner Jet Propulsion Laboratory, California Institute of Technology - National Aeronautics and Space Administration Protostellar Disks: Birth, Life and Death Neal Turner Jet Propulsion Laboratory ...
National Aeronautics and Space Administration Protostellar Disks: Birth, Life and Death Neal Turner Jet Propulsion Laboratory ...
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Introduction to Astrochemistry PowerPoint PPT Presentation
Introduction to Astrochemistry - Examples: pre-stellar cores, protostellar envelopes, outflows, hot cores, protoplanetary disks... dust grains in the center of pre-stellar cores. Dust grain ...
Examples: pre-stellar cores, protostellar envelopes, outflows, hot cores, protoplanetary disks... dust grains in the center of pre-stellar cores. Dust grain ...
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Where do Comets come from? PowerPoint PPT Presentation
Where do Comets come from? - Trillions of snowballs might be wandering around our galaxy, just like the Sun does. ... The Sun's protostellar disk probably extended far beyond Pluto, just ...
Trillions of snowballs might be wandering around our galaxy, just like the Sun does. ... The Sun's protostellar disk probably extended far beyond Pluto, just ...
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Star Formation PowerPoint PPT Presentation
Star Formation - Massive star protostellar 'disk': resolved by VLA ... Stellar remnant graveyard. Effects of BH spin (precession) G.C. distance: Ro ( 1% unc. ...
Massive star protostellar 'disk': resolved by VLA ... Stellar remnant graveyard. Effects of BH spin (precession) G.C. distance: Ro ( 1% unc. ...
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Evolution of the Solar System PowerPoint PPT Presentation
Evolution of the Solar System - Formation of protostar and protostellar nebula. Evolution of early sequences and ... Protostar starts sucking in nearby nebular gases, forms local increase in ...
Formation of protostar and protostellar nebula. Evolution of early sequences and ... Protostar starts sucking in nearby nebular gases, forms local increase in ...
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AST 541 The Stellar Initial Mass Function PowerPoint PPT Presentation
AST 541 The Stellar Initial Mass Function - IMF is a smooth function of mass, independent of time. ... the initial mass distribution of protostellar fragment masses, with fragments ...
IMF is a smooth function of mass, independent of time. ... the initial mass distribution of protostellar fragment masses, with fragments ...
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Star Stuff PowerPoint PPT Presentation
Star Stuff - 1. The Sun began its life like all stars as an intersteller cloud. 2. This cloud collapses due to ... Schematic Illustration of protostellar disk-jet structure ...
1. The Sun began its life like all stars as an intersteller cloud. 2. This cloud collapses due to ... Schematic Illustration of protostellar disk-jet structure ...
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Young Stars I,II PowerPoint PPT Presentation
Young Stars I,II - Essentially ALL protostellar cloud magnetic flux must be lost during star ... collimation. Alfven surface. Accretion leads to ejection. dM/dt (wind) = 0.1 dM/dt (acc) ...
Essentially ALL protostellar cloud magnetic flux must be lost during star ... collimation. Alfven surface. Accretion leads to ejection. dM/dt (wind) = 0.1 dM/dt (acc) ...
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Abstract: PowerPoint PPT Presentation
Abstract: - We present preliminary results of simulations of atomic and molecular ... Are extragalactic jets, stellar jets and protostellar jets connate? 100 km/s. 200 km/s ...
We present preliminary results of simulations of atomic and molecular ... Are extragalactic jets, stellar jets and protostellar jets connate? 100 km/s. 200 km/s ...
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Star and Planet Formation PowerPoint PPT Presentation
Star and Planet Formation - 30.4 Gravitational collapse & early protostellar evolution I (H.B. ... cut out at least a decade of disk. size. Additional FIR excess ...
30.4 Gravitational collapse & early protostellar evolution I (H.B. ... cut out at least a decade of disk. size. Additional FIR excess ...
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1INAF, Osservatorio Astrofisico di Arcetri, Firenze 2 Universitat de Barcelona, Barcelona 3INAF, Ist PowerPoint PPT Presentation
1INAF, Osservatorio Astrofisico di Arcetri, Firenze 2 Universitat de Barcelona, Barcelona 3INAF, Ist - In an ongoing effort to identify and study high-mass protostellar candidates we ... This could be due to the fact that we have overestimated their dust temperature. ...
In an ongoing effort to identify and study high-mass protostellar candidates we ... This could be due to the fact that we have overestimated their dust temperature. ...
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Gamma-rays. PowerPoint PPT Presentation
Gamma-rays. - What are Herbig-Haro Objects? :45. A special type of open star clusters with very young stars. ... Galaxies with very active star formation. Protostellar disk ...
What are Herbig-Haro Objects? :45. A special type of open star clusters with very young stars. ... Galaxies with very active star formation. Protostellar disk ...
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MW90 PowerPoint PPT Presentation
MW90 - Space Infrared Telescope Facility. MW-90. August 2001. Protostellar Disks to Mature Planetary Systems (II) 10 My. 100 My. 5 Gy. Few My (Cores to Disks Team) ...
Space Infrared Telescope Facility. MW-90. August 2001. Protostellar Disks to Mature Planetary Systems (II) 10 My. 100 My. 5 Gy. Few My (Cores to Disks Team) ...
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Chemistry in low-mass star forming regions: ALMA PowerPoint PPT Presentation
Chemistry in low-mass star forming regions: ALMA - Title: PowerPoint Presentation Last modified by: Created Date: 1/1/1601 12:00:00 AM Document presentation format:
Title: PowerPoint Presentation Last modified by: Created Date: 1/1/1601 12:00:00 AM Document presentation format:
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Submillimeter Array (SMA) Group Project PowerPoint PPT Presentation
Submillimeter Array (SMA) Group Project - a radio interferometry located at ~4000m in Hawaii, with eight 6-m antennae. ... HD 161796: A Youngest PPN. At 17:44:55.43, 50:02:38.4 at 1 kpc ...
a radio interferometry located at ~4000m in Hawaii, with eight 6-m antennae. ... HD 161796: A Youngest PPN. At 17:44:55.43, 50:02:38.4 at 1 kpc ...
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The Origin of the Solar System PowerPoint PPT Presentation
The Origin of the Solar System - 0 The Origin of the Solar System Planetary Orbits Neptune Uranus Saturn Jupiter Mars Earth Venus Mercury All planets in almost circular (elliptical) orbits around the ...
0 The Origin of the Solar System Planetary Orbits Neptune Uranus Saturn Jupiter Mars Earth Venus Mercury All planets in almost circular (elliptical) orbits around the ...
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STAR%20FORMATION: PowerPoint PPT Presentation
STAR%20FORMATION: - Title: PowerPoint Presentation Author: Chris McKee Last modified by: Chris McKee Created Date: 3/28/2005 11:27:07 PM Document presentation format
Title: PowerPoint Presentation Author: Chris McKee Last modified by: Chris McKee Created Date: 3/28/2005 11:27:07 PM Document presentation format
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The Formation of High Mass Stars PowerPoint PPT Presentation
The Formation of High Mass Stars - Outstanding Challenges of Massive Star Formation ... are found to be collimated with collimation factors 2-10 (Beuther 2002, 2003, 2004) ...
Outstanding Challenges of Massive Star Formation ... are found to be collimated with collimation factors 2-10 (Beuther 2002, 2003, 2004) ...
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Star and Planet Formation PowerPoint PPT Presentation
Star and Planet Formation - Collimation and pv-structure. Lee et al. 2001 ... Different degrees of collimation can be explained by different density ... Collimation is caused by Lorentz forces. ...
Collimation and pv-structure. Lee et al. 2001 ... Different degrees of collimation can be explained by different density ... Collimation is caused by Lorentz forces. ...
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A Star is Born How Stars Are Formed PowerPoint PPT Presentation
A Star is Born How Stars Are Formed - A Star is Born How Stars Are Formed Star formation in the Eagle Nebula as seen with the Hubble Space Telescope A tower of cold gas and dust rising from the Eagle ...
A Star is Born How Stars Are Formed Star formation in the Eagle Nebula as seen with the Hubble Space Telescope A tower of cold gas and dust rising from the Eagle ...
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Young Stars I,II PowerPoint PPT Presentation
Young Stars I,II - Title: Star formation - the accretion (luminosity) problem Author: Lee Hartmann Last modified by: Lee Hartmann Created Date: 6/6/1999 2:12:30 PM Document presentation ...
Title: Star formation - the accretion (luminosity) problem Author: Lee Hartmann Last modified by: Lee Hartmann Created Date: 6/6/1999 2:12:30 PM Document presentation ...
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WHERE PowerPoint PPT Presentation
WHERE - Avg density 1 grain/million m3. Whirlpool' Galaxy. Looking at a ... Supernova blast wave. Expanding emission nebula. Galactic density wave. p. 271. Molecular ...
Avg density 1 grain/million m3. Whirlpool' Galaxy. Looking at a ... Supernova blast wave. Expanding emission nebula. Galactic density wave. p. 271. Molecular ...
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Why exoplanets have so high eccentricities PowerPoint PPT Presentation
Why exoplanets have so high eccentricities - Migration caused by a torques from interactions between planet and disk ... Mazeh T., 'Derivation of the mass distribution of extrasolar planets with MAXLIMA. ...
Migration caused by a torques from interactions between planet and disk ... Mazeh T., 'Derivation of the mass distribution of extrasolar planets with MAXLIMA. ...
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The Fundamental Problem in studying the stellar lifecycle PowerPoint PPT Presentation
The Fundamental Problem in studying the stellar lifecycle - The Fundamental Problem in studying the stellar lifecycle We study the subjects of our research for a tiny fraction of its lifetime Sun s life expectancy ~ 10 ...
The Fundamental Problem in studying the stellar lifecycle We study the subjects of our research for a tiny fraction of its lifetime Sun s life expectancy ~ 10 ...
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SEST/SIMBA PowerPoint PPT Presentation
SEST/SIMBA - SIMBA. 37- channel hexagonal bolometer array. Central frequency of bandpass = 250 GHz (1.2mm) ... Observing with SEST/SIMBA. On-the-fly mapping. Scanning speed: ...
SIMBA. 37- channel hexagonal bolometer array. Central frequency of bandpass = 250 GHz (1.2mm) ... Observing with SEST/SIMBA. On-the-fly mapping. Scanning speed: ...
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Star Formation and Protostars at High Angular Resolution with the SMA PowerPoint PPT Presentation
Star Formation and Protostars at High Angular Resolution with the SMA - Fredrik Sch ier (Stockholm), Ewine van Dishoeck (Leiden), ... and the PROSAC team. ... Other species such as CH3OH may have their origin in the circumstellar disk...
Fredrik Sch ier (Stockholm), Ewine van Dishoeck (Leiden), ... and the PROSAC team. ... Other species such as CH3OH may have their origin in the circumstellar disk...
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Disk fragmentation, PowerPoint PPT Presentation
Disk fragmentation, - Yuri Levin, U. Leiden Kaitlin Kratter, U. Toronto. Disk fragmentation in the main accretion phase ... Fragmentation is sensitive to the thermal evolution of ...
Yuri Levin, U. Leiden Kaitlin Kratter, U. Toronto. Disk fragmentation in the main accretion phase ... Fragmentation is sensitive to the thermal evolution of ...
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Star Formation PowerPoint PPT Presentation
Star Formation - Star Formation. Giant Molecular Clouds. Visible. Infrared. Barnard 68. Star formation collapse of the cores of giant molecular clouds: Dark, cold, ...
Star Formation. Giant Molecular Clouds. Visible. Infrared. Barnard 68. Star formation collapse of the cores of giant molecular clouds: Dark, cold, ...
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AMI-LA radio continuum observations of low mass young stars: target sample for e-MERLIN legacy project PowerPoint PPT Presentation
AMI-LA radio continuum observations of low mass young stars: target sample for e-MERLIN legacy project - ... Class I: 70 3000 Ratio of Spitzer IRAC to submm emission F3.6/F850 0.003 A form of thermal ...
... Class I: 70 3000 Ratio of Spitzer IRAC to submm emission F3.6/F850 0.003 A form of thermal ...
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The UNSW PowerPoint PPT Presentation
The UNSW - Optical Near-Infrared (1 3.5 m, COBE) Far Infrared (12 100 m, IRAS) Methanol Masers ... Science with Antarctic Infrared and Sub-millimetre Telescopes
Optical Near-Infrared (1 3.5 m, COBE) Far Infrared (12 100 m, IRAS) Methanol Masers ... Science with Antarctic Infrared and Sub-millimetre Telescopes
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Inverse magnetic cascade as a paradigm for Early Universe MHD PowerPoint PPT Presentation
Inverse magnetic cascade as a paradigm for Early Universe MHD - M. Christensson, M. Hindmarsh, A. Bramdemburg: 2001, PRE 64, 056405 ... Christensson (2002 2005) H not exactly constant. Assume power law ...
M. Christensson, M. Hindmarsh, A. Bramdemburg: 2001, PRE 64, 056405 ... Christensson (2002 2005) H not exactly constant. Assume power law ...
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Basic Properties of Stars (continued). Stellar Lives. PowerPoint PPT Presentation
Basic Properties of Stars (continued). Stellar Lives. - Surface temperature determines a star' color. The coolest stars are red, the hottest ones are blue. Only the brightest star colors can be recognized by the naked eye. ...
Surface temperature determines a star' color. The coolest stars are red, the hottest ones are blue. Only the brightest star colors can be recognized by the naked eye. ...
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Chapter 14: Star Stuff PowerPoint PPT Presentation
Chapter 14: Star Stuff - T Tauri stars, named after variable star T in Taurus are PMS stars that have ... For every star with mass 10-100 MSun, there are ~10 stars with 2-10 MSun, 50 ...
T Tauri stars, named after variable star T in Taurus are PMS stars that have ... For every star with mass 10-100 MSun, there are ~10 stars with 2-10 MSun, 50 ...
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Gas mixing and Star formation by shock waves and turbulence PowerPoint PPT Presentation
Gas mixing and Star formation by shock waves and turbulence - Elisabete M. de Gouveia Dal Pino (IAG-USP) Introduction ... Detailed model to determine HE (Melioli & de Gouveia Dal Pino, A&A, 2004) HE. SN. Shock wave ...
Elisabete M. de Gouveia Dal Pino (IAG-USP) Introduction ... Detailed model to determine HE (Melioli & de Gouveia Dal Pino, A&A, 2004) HE. SN. Shock wave ...
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The Rocket Science of Launching Stellar Disks PowerPoint PPT Presentation
The Rocket Science of Launching Stellar Disks - Where do stars, planets, we, come from?? From collapse of ... Spiral Galaxies. Disk in Center of Galaxy. Beta Pictoris. Lagoon. Nebula. Gaseous Pillars in M16 ...
Where do stars, planets, we, come from?? From collapse of ... Spiral Galaxies. Disk in Center of Galaxy. Beta Pictoris. Lagoon. Nebula. Gaseous Pillars in M16 ...
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Molecular Cloud Turbulence and Star Formation PowerPoint PPT Presentation
Molecular Cloud Turbulence and Star Formation - Javier Ballesteros-Paredes1, Ralf Klessen2, Mordecai-Mark Mac Low3, Enrique Vazquez-Semadeni1 ... homogeneity & isotropy in a statistical sense; ...
Javier Ballesteros-Paredes1, Ralf Klessen2, Mordecai-Mark Mac Low3, Enrique Vazquez-Semadeni1 ... homogeneity & isotropy in a statistical sense; ...
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The Growth of the MRI in Protoplanetary Disks PowerPoint PPT Presentation
The Growth of the MRI in Protoplanetary Disks - Mark Wardle Macquarie University Sydney, Australia Protoplanetary disks Magnetic diffusion MRI with diffusion Ionisation equilibrium Live and Dead zones
Mark Wardle Macquarie University Sydney, Australia Protoplanetary disks Magnetic diffusion MRI with diffusion Ionisation equilibrium Live and Dead zones
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The Origin of Modern Astronomy PowerPoint PPT Presentation
The Origin of Modern Astronomy - 0 Chapter 9 The Formation and Structure of Stars The space between the stars is not completely empty, but filled with very dilute gas and dust, producing some of the ...
0 Chapter 9 The Formation and Structure of Stars The space between the stars is not completely empty, but filled with very dilute gas and dust, producing some of the ...
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