Circumstellar Matter 1994 : Proceedings of an International Conference to Celebrate the Centenary of the Royal Observatory, Edinburgh, held at the Edinburgh Conference Centre, Heriot-Watt University, Riccarton, Edinburgh, Scotland, 29 August -- 2 Septembe

The conference recorded in this volume was one of the events organised to celebrate the centenary of the (re)establishment of the Royal Observatory, Edinburgh, on Blackford Hill in 1884. Circumstellar Matter was selected as the topic because of important contributions toward research in the field by recent observations in the infrared and submillimetre, particularly with the two telescopes which the Observatory has both operated and built instru­ mentation for - the United Kingdom Infrared Telescope (UKIRT) and the James Clerk Maxwell Telescope (JCMT). The programme aimed to cover as many aspects of circumstellar matter as could fit into a one-week meeting, omitting only planetary nebulae, which had been well served by meetings in the previous two years. We thank the international scientific advisory com­ mittee (overleaf) for their help in selecting the Invited Reviewers around which the programme was built. The Invited Reviews and oral contributions are included in the order and sections in which they were presented, even where re-ordering might have been more logical. We did not attempt to categorise the poster contributions but have included them in alphabetical order. An evening session for viewing and discussing posters in an unhurried atmosphere was very successful. A competition for the best poster was held and the prize was awarded for that by Lindqvist, Lucas, Olofsson, Omont, Eriksson & Gustafsson. Front Matter....Pages i-xvi Front Matter....Pages 1-1 Circumstellar Envelopes and Disks of Pre-Main Sequence Stars....Pages 3-12 Observations of Disks around Protostellar Sources with Nobeyama Millimeter Array....Pages 13-16 Near-IR Spectroscopy and the Photospheres of Embedded YSOs....Pages 17-20 Millimeter Polarimetry of Star-Forming Regions: Magnetic Field Structure around Low-Mass Stars....Pages 21-24 Infrared CO Emission and Disks around Young Stars....Pages 25-28 Low-Mass Protostars and Protostellar Stages....Pages 29-42 Ammonia Images near, Objects with Class 0 Spectral Energy Distributions....Pages 43-46 Submillimetre Continuum Observations of Pre-Protostellar Cores....Pages 47-50 The Densest Prestellar Condensations: H 2 CO Studies of ρ Oph B1....Pages 51-54 Masers in Star-Forming Regions....Pages 55-62 Theoretical Modelling of SiO Maser Lineshapes....Pages 63-68 Unravelling Cepheus A....Pages 69-72 Star Formation in L 1199....Pages 73-76 Modeling Far-Infrared Observations of Young Stellar Objects....Pages 77-80 Observations of Chemical Processing in the Circumstellar Environment....Pages 81-84 Sub-Mm and Far-Infrared Continuum Observations of Herbig-Haro Exciting Stars and Other YSO’s....Pages 85-88 Extended Structures around YSO in Mid-IR Broad Emission Features....Pages 89-92 Absorption of X-Ray Emission of T Tauri Stars by Circumstellar Material....Pages 93-96 Front Matter....Pages 97-97 Pre-Main-Sequence Outflows....Pages 99-108 The Small-Scale Outflow Structure of Embedded Sources in Taurus....Pages 109-112 Front Matter....Pages 97-97 Physical Properties of the Outflow Sources in Taurus....Pages 113-116 Submillimeter CO Spectroscopy of Low Mass Young Stellar Objects....Pages 117-120 Near-Infrared Imaging of H 2 in Molecular Outflows from Young Stars....Pages 121-124 Molecular Shocks in Star Forming Regions....Pages 125-138 Observations of Shocked [FEII] and H 2 Line Profiles in Orion Bullet Wakes....Pages 139-142 The Orion-IRc2 Outflow Observed in CO J=4-3....Pages 143-150 Giant Bow Shock Pairs Associated with Herbig-Haro Jets....Pages 151-154 Front Matter....Pages 155-155 Newly Formed Massive Stars: Are They Good for the Neighborhood?....Pages 157-171 The Massive Hot Core Associated with G31.41+0.31....Pages 173-176 Structure and Chemistry in the Hot Molecular Core G34.3+0.15....Pages 177-180 Observations and Modeling of Infrared and Millimeter Molecular Lines Towards GL2591....Pages 181-184 Submm Observations of Herbig Ae/Be Systems....Pages 185-188 Millimetre and Submillimetre Observations of High–Mass Star Forming Cores....Pages 189-198 An IRAS Atlas of YSOS in Nearby Dark Clouds....Pages 199-202 A Self-Consistent Model for the S140/L1204 Region....Pages 203-210 Periodical Light Variations of T Tauri Stars as a Result of Disk Accretion....Pages 211-214 Front Matter....Pages 215-215 Molecules and Dust in Circumstellar Shells....Pages 217-222 Circumstellar Dust and Circumstellar Extinction Curves....Pages 223-226 The Fir Emission of Dust Particles around C-Rich IRAS Sources....Pages 227-232 The Interpretation of Observations of Ice and Silicate Ir Features and Polarization Across It in the Spectra of Protostellar Objects BN and AFGL 2591....Pages 233-233 Front Matter....Pages 235-235 Chemical Evolution of Circumstellar Matter around Young Stellar Objects....Pages 237-250 Hot Core Chemistry....Pages 251-254 Molecular Gas around Symbiotic Miras: Masers in R Aquarii and H1-36....Pages 255-258 Front Matter....Pages 259-259 Circumstellar Nebulae around Ofpe/WN9 Stars....Pages 261-266 Wind Anisotropy Revealed by Dust Formation around Wolf-Rayet Stars....Pages 267-270 Detection of H 2 Emission Towards the Wolf-Rayet Nebula NGC 2359....Pages 271-274 The Production of Circumstellar 26 Al by Massive Stars....Pages 275-278 Front Matter....Pages 279-279 The Physical and Chemical Properties of Circumstellar Envelopes....Pages 281-292 Plateau De Bure Observations of IRC+10216: High Sensitivity Maps of SiC 2 , SIS, and CS....Pages 293-296 Gaseous Refractory-Element Molecules in IRC10216....Pages 297-304 Observations of High CO Rotational Lines in Post-Agbs and PN....Pages 305-308 Stellar Evolution and Mass Loss on the Asymptotic Giant Branch....Pages 309-320 The Circumstellar Shells of Carbon Miras....Pages 321-324 The Circumstellar Environment of the Pecular F Hypergiant IRC +10420....Pages 325-328 Infrared Appearance of Dynamical Models for Circumstellar Dust Shells around Long–Period Variables....Pages 329-332 The Structure of Circumstellar Envelopes....Pages 333-333 Circumstellar Molecular Line Absorption and Emission in the Optical Spectra Of Post-Agb Stars....Pages 335-338 Long Baseline Interferometric Observations of Long Period Variable Stars....Pages 339-352 Analysis of the IR and Sub—mm Emission of Four post—AGB Stars....Pages 353-356 Circumstellar Absorption and Emission in the Post-AGB Stars HR 4049 and HD213985....Pages 357-360 Front Matter....Pages 279-279 The Mid-Infrared Structure of the Bipolar Nebulae AFGL 915, AFGL 618, and AFGL 2688....Pages 361-364 Front Matter....Pages 365-365 Circumstellar Shocks: Colliding Stellar Winds....Pages 367-376 Circumstellar Dynamics and Transfer....Pages 377-378 Forming Dust Precursors in the Inner Envelopes of Carbon-Rich AGB Stars....Pages 379-382 The Onset of Axial Symmetry in Protoplanetary Nebulae....Pages 383-386 Front Matter....Pages 387-387 Follow-Up Observations of β -Pic-Like Stars....Pages 389-393 Properties of the β Pictoris Disc Deduced from Optical Imaging Polarimetry....Pages 395-398 Multi-Color Coronographic Imaging of the Beta Pictoris Disk....Pages 399-399 The Infrared Colors of Main Sequence Stars: How Much Circumstellar Debris Is Normal?....Pages 401-404 Observations of Dust Emission from Vega-excess Stars....Pages 405-408 Front Matter....Pages 409-409 SHARP Images of Young Stellar Objects....Pages 411-414 Circumstellar Matter in Direct Impact Algol Systems....Pages 415-416 Formation and Photodestruction of Pahs....Pages 417-418 Silicate Dust Emission in Sr Variables....Pages 419-420 SiO Observations of Mass-Losing AGB Stars....Pages 421-422 Effects of a Clumpy Circumstellar Medium on the Dynamics of Stellar Winds....Pages 423-424 Which Size Distribution Is Best for IRC +10°216?....Pages 425-426 Evolution of the Circumstellar Shell of Pleione (1981-94)....Pages 427-428 Inhomogeneities in the Circumstellar Envelope of the Aoe Herbig Star AB Aur....Pages 429-430 Dust and Gas in W49A....Pages 431-432 Front Matter....Pages 409-409 CO Interferometric Observations of M1-92 (The Minkowski’s Footprint)....Pages 433-434 New Candidates for Objects with a 21 Micron Feature....Pages 435-437 Gas-Grain Processes in the Envelopes of Late-Type Stars....Pages 439-440 The Interstellar Chemistry of Protostellar Disks....Pages 441-442 Molecular Signatures of MHD Waves....Pages 443-444 VLBI Study of the SIO Maser Emission at 43 GHZ in the Circumstellar Envelope of R Cas....Pages 445-446 Inner Radii of Dust Shells and Stellar Diameters Obtained by an Infrared Stellar Interferometer at 11 Micron Wavelength....Pages 447-448 The Equatorial Expansion of be Stars a Thin-Line Wind?....Pages 449-450 The Extended Dust Emission Around the Nova Gk Persei....Pages 451-452 High Resolution Radio Images of the Symbiotic System R Aquarii....Pages 453-454 A Flare in the Mira X Oph....Pages 455-456 Direct Observations of Bipolar Outflow from HM Sagittae....Pages 457-458 Structure and Evolution of Circumstellar Shells Formed by Massive Star Winds....Pages 459-460 The Ney-Allen Nebula: An Unambiguous Example of Circumstellar Dust Emission....Pages 461-461 4.8 — 20 Micron Imaging of Orion BN/KL: Luminosity Sources and the Role of IRc2....Pages 463-463 NGC 7027: Analysis of 7.8–20 Micron Continuum, Silicate and PAH Grain Distributions....Pages 465-465 HH24-26: Structure, Dynamics and Chemistry....Pages 467-468 The SiO Masers and Dust Shell of VX Sgr....Pages 469-470 CO Modelling of CW Leo....Pages 471-472 Is C/O Enhanced in NGC 253?....Pages 473-474 Front Matter....Pages 409-409 Far-Infrared Observations of Main Sequence Stars Surrounded by Dust Shells....Pages 475-476 Detection of Detached Dust Envelopes Around Oxygen-Rich AGB Stars....Pages 477-478 Unveiling the Formation of Stars and Planets with a Large Infrared-Optical Telescope....Pages 479-480 Emission Line Widths of an Asymmetric Bowshock Inside a Cloud of Dust....Pages 481-482 High Resolution Observations of the Radio Emission from Luminous YSOs....Pages 483-484 Nonlinear Models of Pulsation and Mass Loss....Pages 485-486 Probing the Magnetic Field around Protostars....Pages 487-488 Potential Protostars in Cloud Cores....Pages 489-490 Formation Rate of Triple Stars Relative to Double Stars....Pages 491-492 Aperture Synthesis Observations of HCN J=1-0 Emission from Y Canum Venaticorum....Pages 493-494 Extended dust shells around carbon stars resolved by “Hiras”....Pages 495-496 The Circumstellar Structure of Lynds 379 IRS1....Pages 497-498 CO Observations of Semiregular Variables....Pages 499-500 Interferometric Observations of HCN and CN Towards Carbon Stars....Pages 501-502 Theoretical Visibility Curves of Late Type Stars....Pages 503-504 Infrared Velocity Mapping of Compact HII Region....Pages 505-506 The Chemistry of Silicon in Hot Molecular Cores....Pages 507-508 Infrared Polarimetry and Imaging of Ultracompact Partially Ionized Optical Sources in the Orion Nebula....Pages 509-510 Observations with a Mid-Infrared Camera of AGB Star Envelopes....Pages 511-512 Polarimetric Properties of the Reflection Nebula R Mon/NGC 2261....Pages 513-514 Front Matter....Pages 409-409 New Merlin Observations of OH/IR Stars: OH357.31-1.33 and OH0.9+1.3....Pages 515-516 Long-Slit Spectroscopy of the Compact Planetary Nebula Hu 2-1....Pages 517-518 Massive Early-Type Emission-Line Stars: an Attempt to Distinguish a New Group of Stellar Objects....Pages 519-520 MID-IR Imaging Polarimetry and Circumstellar Magnetic Fields....Pages 521-522 The Mass of the Star Formed in a Cloud Core....Pages 523-524 A Search for Planetary System Candidates....Pages 525-526 Molecular Abundances in Carbon—Rich Circumstellar Envelopes....Pages 527-528 Long-Slit Spectroscopy of Herbig-Haro Objects....Pages 529-530 Silicon Carbide Clusters in Circumstellar Environment....Pages 531-531 Formation of a Filamentary Structure in Planetary Nebulae....Pages 533-533 Direct Mid—IR Images of GL 2591,W51—IRS2 and S140....Pages 535-536 Excitation of Interstellar Water by Ortho-and Para-Hydrogen....Pages 537-538 Structural Peculiarities of Circumstellar Envelopes of the Young Aoe Herbig Stars....Pages 539-540 The Geometry of Decoupled Line Driven Winds....Pages 541-542 Dust Processing in Nova Winds....Pages 543-544 The Circumstellar Envelope of S Persei....Pages 545-546 Doppler Tomography of Accretion Regions in Algols....Pages 547-548 Circumstellar Material Around the Proto-Pne IRAS 10178–5958 and IRAS 11065–6026....Pages 549-550 The Spatial Structure of the HH 30 Jet....Pages 551-552 Circumstellar X-Ray Emission from SN1978K....Pages 553-554 Front Matter....Pages 409-409 Statistical Results from a JCMT Survey of Mm and Sub-Mm Emission in Herbig Ae/Be Stars....Pages 555-556 Circumstellar Matter in Selected Symbiotic Stars....Pages 557-558 Circumstellar Matter in The Symbiotic Binary CH Cyg During its Current Outburst....Pages 559-560 Comparison between a Radiative Wind Model for be Stars and High Angular Resolution Data from the GI2T Interferometer....Pages 561-562 Silicates in Evolved Stars: The LRS-Maser Chronology Revisited....Pages 563-564 Magnetically-Aided Evolution of Protoplanetary Disks....Pages 565-566 Coagulation and Settling of Dust in a Turbulent Protoplanetary Disk....Pages 567-568 ASCA Observations of Colliding Stellar Winds in Gamma Velorum....Pages 569-570 Searches for Bright-Rimmed Clouds with IRAS Point Sources....Pages 571-572 Solid CO Spectroscopy: Embedded YSOs in Taurus—Auriga....Pages 573-574 Si-O Stretch Modes In Amorphous Silicates....Pages 575-576 Dust Shells of Distant Young Stars....Pages 577-578 Modelling and Distance Determination of Planetary Nebulae....Pages 579-580 Binarity of the Red-Rectangle and Other Extremely Fe-Poor (Post?)-AGB Stars.....Pages 581-582 Modelling Interstellar Water Masers....Pages 583-584 CS Studies of Dense Cores in Regions of High Mass Star Formation: A Survey of Southern Molecular Masers....Pages 585-586 X-ray Emission as a Tracer of Circumstellar Matter Around Herbig Ae/Be Stars....Pages 587-588 Front Matter....Pages 589-589 Summary & Concluding Remarks....Pages 591-595 Back Matter....Pages 597-618 The papers in Circumstellar Matter 1994 cover a range of scenarios, from disk and envelope around young stellar objects and protostars through to more aged stars and highly-evolved objects which exhibit considerable mass loss features. Significant advances and developments in observing facilities, instrumentation, computing power and techniques are described, together with a variety of theories, suggestions, observations and models describing the formation, composition, effects and evolution of the material surrounding a stellar environment. Audience: Researchers and graduate students interested in star formation and evolved stars.