The Carbon Star Phenomenon

The Carbon Star Phenomenon

Proceedings of the 177th Symposium of the International Astronomical Union, held in Antalya, Turkey, May 27-31, 1996

Author: International Astronomical Union. Symposium

Publisher: Springer Science & Business Media

ISBN: 0792363469

Category: Science

Page: 613

View: 626

Proceedings of the 177th Symposium of the International Astronomical Union, held in Antalya, Turkey, May 27-31, 1996
Categories: Science

Dust and Molecules in Evolved Stars

Dust and Molecules in Evolved Stars

References Asplund, M., 1997, In Ed., R.F. Wing, The Carbon Star Phenomenon, IAU Symposium 177, Kluwer, in press Böhm-Vitense, E., 1990, Stellar Astrophysics, Vol.2, Cambridge. Birdsall, C.K., Langdon, A.B., 1985, Plasma Physics via ...

Author: I. Cherchneff

Publisher: Springer Science & Business Media

ISBN: 9789401713078

Category: Science

Page: 396

View: 803

Dust and molecules are found in a large variety of astrophysical environments, in particular in the circumstellar material ejected by evolved stars. This book brings together the leading astronomers and astrophysicists in the field of molecular astrophysics and stellar physics to discuss the important issues of dust and molecular formation, the role of solids in circumstellar environments, molecules as probes of circumstellar parameters, the stellar contribution to the enrichment of the Galaxy, and the latest observational data in various wavelength domains, in partiular in the infrared with results from the Infrared Space Observatory. The astrophysical senarios include late-type stars, novae, Wolf-Rayet stars, Luminous Blue Variables and supernovae. Audience: Researchers and graduate students in the fields of stellar physics, stellar evolution and astrochemistry.
Categories: Science

From Miras to Planetary Nebulae

From Miras to Planetary Nebulae

Mass Range of Carbon Star Progenitors The large mass loss rates during the infrared carbon star stage will quickly ... It is therefore possible that the carbon star phenomenon is restricted in the low mass end by the dredge - up process ...

Author: M. O. Mennessier

Publisher: Atlantica Séguier Frontières

ISBN: 2863320777

Category: Enveloppes circumstellaires - Congrès

Page: 565

View: 618

Categories: Enveloppes circumstellaires - Congrès

Galaxy Evolution Connecting the Distant Universe with the Local Fossil Record

Galaxy Evolution  Connecting the Distant Universe with the Local Fossil Record

CARBON STARS IN NEARBY LOCAL GROUP GALAXIES M. AZZOPARDI IGRAP Observatoire de Marseille, 2, place Le Verrier, F-13248 Marseille Cedex 04, France Abstract. Well pronounced molecular bands ... 177 (The Carbon Star Phenomenon), No.

Author: Monique Spite

Publisher: Springer Science & Business Media

ISBN: 9789401142137

Category: Science

Page: 575

View: 842

This up-to-date review of the basic elements directly connected to the evolution of galaxies links data about remote galaxies to the observation of very old populations in our own galaxy. Young researchers and well-known specialists discuss the difficulties and remaining uncertainties of the problem.
Categories: Science

Stellar Evolution Physics

Stellar Evolution Physics

in the 12C abundance distribution during the flash is the creation of carbon at the expense of helium ingested by the ... to produce the carbonstar phenomenon and, ultimately, contribute to an increase of the abundance of carbon in the ...

Author: Icko Iben

Publisher: Cambridge University Press

ISBN: 9781107016576

Category: Science

Page: 616

View: 314

Describes how stars respond to microscopic physics in the advanced stages of their evolution with many numerical examples and illustrations.
Categories: Science

Mass Losing Pulsating Stars and their Circumstellar Matter

Mass Losing Pulsating Stars and their Circumstellar Matter

They are the faintest stars on the AGB in Fig 1. It would be interesting to know whether they are carbon or oxygen stars, and followup spectroscopic observations would be desirable. The reddest obscured star, E, is interesting in that ...

Author: Y. Nakada

Publisher: Springer Science & Business Media

ISBN: 9789401001397

Category: Science

Page: 429

View: 712

Editing the proceedings of a scientific meeting is not an easy task. Sometimes people who give an excellent talk do not send the manuscript by the deadline. However, this time, thanks to the punctuality of all the participants, we have this excellent volume for the workshop on mass losing pulsating stars and their circumstellar matter prepared in time. Almost all of the oral presentations including the summary are collected in this volume. We regret that we cannot put in this volume a few posters that we failed to receive before the editorial work. The workshop was planned as a small meeting with less than fifty attendants because the city of Sendai was far from the most of the active institutions. However, the number of submitted papers exceeded the SOC's expectation; many interesting contributions had to be scheduled in the poster session. Still, the oral sessions were so tight that many participants might have felt frustrated for the shortage of discussions. The organizers of the workshop have to apologize to the attendants for the inconvenience caused from such a happy underestimate about the size of the workshop.
Categories: Science

Stellar Spectral Classification

Stellar Spectral Classification

Abia , C. , & Isern , J. 2000 , in The Carbon Star Phenomenon , ed . R.F. Wing ( Dordrecht : Kluwer Academic Publishers ) , p . ... 1972 , MNRAS , 158 , 305 Allen , D.A. 1982 , IAU Coll 70 , The Nature of Symbiotic Stars , ed .

Author: Richard O. Gray

Publisher: Princeton University Press

ISBN: 9781400833368

Category: Science

Page: 592

View: 283

Written by leading experts in the field, Stellar Spectral Classification is the only book to comprehensively discuss both the foundations and most up-to-date techniques of MK and other spectral classification systems. Definitive and encyclopedic, the book introduces the astrophysics of spectroscopy, reviews the entire field of stellar astronomy, and shows how the well-tested methods of spectral classification are a powerful discovery tool for graduate students and researchers working in astronomy and astrophysics. The book begins with a historical survey, followed by chapters discussing the entire range of stellar phenomena, from brown dwarfs to supernovae. The authors account for advances in the field, including the addition of the L and T dwarf classes; the revision of the carbon star, Wolf-Rayet, and white dwarf classification schemes; and the application of neural nets to spectral classification. Copious figures illustrate the morphology of stellar spectra, and the book incorporates recent discoveries from earth-based and satellite data. Many examples of spectra are given in the red, ultraviolet, and infrared regions, as well as in the traditional blue-violet optical region, all of which are useful for researchers identifying stellar and galactic spectra. This essential reference includes a glossary, handy appendixes and tables, an index, and a Web-based resource of spectra. In addition to the authors, the contributors are Adam J. Burgasser, Margaret M. Hanson, J. Davy Kirkpatrick, and Nolan R. Walborn.
Categories: Science

From Stardust to Planetesimals

From Stardust to Planetesimals

CARBON STARS Sloan , Little Marenin , & Price ( 1996 ) examine the sample of 96 carbon stars associated with the ... Little - Marenin , I.R. , Sloan , G.C. , & Price , S.D. 1996 , in IAU Symposium 177 : The Carbon Star Phenomenon , ed .

Author: M. E. Kress

Publisher:

ISBN: NASA:31769000471733

Category:

Page: 230

View: 713

Categories:

Asymptotic Giant Branch Stars

Asymptotic Giant Branch Stars

mass, but also a separation into carbon-rich and Oxygen-rich is of great importance. The full luminosity function of AGB stars contains ... Azzopardi, M. In Wing, R., editor, IAU symposium 177: The carbon star phenomenon, page 51.

Author: Harm J. Habing

Publisher: Springer Science & Business Media

ISBN: 9781475738766

Category: Science

Page: 562

View: 833

The underlying astrophysical mechanisms of the objects known as asymptotic giant branch stars - the structures that occur during the dramatic period prior to a star's death - is the main theme of this text. Over the past three decades, asymptotic giant branch stars have become a topic of their own, and the contributions to this volume all focus on these entities themselves, rather than their connections to other fields of astronomy. Among the many topics covered are new methods of high- quality infrared observation and the more detailed and realistic simulations made possible by increasingly fast computers. This collection should be useful to graduate students who work in the field, teachers who want to address the subject in their courses, and to astronomers from various backgrounds who are interested in the astrophysics of AGB stars.
Categories: Science

Physics and Chemistry of Circumstellar Dust Shells

Physics and Chemistry of Circumstellar Dust Shells

Oxygen chemistry in the circumstellar envelope of the carbon-rich star IRC+10216. ApJ 650:374–393. ... V: The influence of micro-physical dust properties in carbon stars. ... In Wing, R. F., ed., The Carbon Star Phenomenon, Vol.

Author: Hans-Peter Gail

Publisher: Cambridge University Press

ISBN: 9780521833790

Category: Science

Page: 684

View: 404

This book explores why dust forms around stars, and how to model stellar dust formation and dust-forming environments consistently.
Categories: Science

Molecules in Astrophysics Probes and Processes

Molecules in Astrophysics  Probes and Processes

177 , The Carbon Star Phenomenon , Turkey 1996 ( Wing 1996 ) . 2. Molecules in stars While continuum processes and atomic spectral lines ( b — b transitions ) are responsible for the interaction between radiation and matter in the ...

Author: International Astronomical Union. Symposium

Publisher: Springer Science & Business Media

ISBN: 079234538X

Category: Science

Page: 588

View: 232

Proceedings of the 178th Symposium of the International Astronomical Union held in Leiden, The Netherlands, July 1-5, 1996
Categories: Science

Nanotechnology Abstracts

Nanotechnology Abstracts

Carbon Star Dust from Meteorites Joergensen , U .; Andersen , A. C. Source : In Wing , R.F. ( ed . ) The Carbon Star Phenomenon , IAU Symposium 177 , 349 . Carrier activation in in situ Si - doped GaAs layers fabricated by a focused Si ...

Author: Eugene V. Dirote

Publisher: Nova Publishers

ISBN: 1590334116

Category: Technology & Engineering

Page: 154

View: 180

Nanotechnology is a 'catch-all' description of activities at the level of atoms and molecules that have applications in the real world. A nanometre is a billionth of a metre, that is, about 1/80,000 of the diameter of a human hair, or 10 times the diameter of a hydrogen atom. Nanotechnology is now used in precision engineering, new materials development as well as in electronics; electromechanical systems as well as mainstream biomedical applications in areas such as gene therapy, drug delivery and novel drug discovery techniques. This book presents carefully selected abstracts of the last 5 years in this frontier field. Special access is provide by author, title and subject indexes.
Categories: Technology & Engineering

Science with the VLT Interferometer

Science with the VLT Interferometer

From the number densities of carbon stars with mass loss rates comparable to our models (Groenewegen et al. ... A&A 297, 815 Kerschbaum F., Habison P., Loidl R., Olofsson H., Hron J.: 1996, The Carbon Star Phenomenon, IAU Symp. 177, ed.

Author: Francesco Paresce

Publisher: Springer Science & Business Media

ISBN: 9783540693987

Category: Science

Page: 409

View: 703

It has always been ESO's aim to operate the VLT in an interferometric mode (VLTI) which allows the coherent combination of stellar light beams col lected by the four 8-m telescopes and by several smaller auxiliary telescopes. In December 1993, in response to financial difficulties, the ESO Council de cided to postpone implement at ion of the VLTI, Coude trains and associated adaptive optics for all the UTs but included provisions for continuing tech nological and development programmes devoted to the aim of reintroducing these capabilities at the earliest possible date. The desirability of carrying out the full VLTI programme as originally envisaged at the earliest possible moment has not, however, diminished, es pecially in view of VLTI's exceptional capabilities and resulting potential for new and exciting discoveries. In recent years, interferometric projects have begun to playa central role in ground-based high-resolution astronomy, and numerous instruments have been completed or are in the process of construc tion. Several large-aperture interferometers will probably co me on-line near the turn of the century. The impending presence of these new instruments represents an important incentive both for clarifying the scientific cases for various VLTI implementation plans and for ensuring VLTI's competitiveness in the international context over the next 1O~20 years.
Categories: Science

New Light on Dark Stars

New Light on Dark Stars

Gliese, W., Jahreiss, H., 1991, Third Catalogue of Nearby Stars, preliminary version. Greenstein, J. L., Neugebauer, G., Becklin, E. E., 1970, ApJ, 161, 519. Green, P. J., 2000, in IAU Symp. 177, The Carbon Star Phenomenon, ed.

Author: Neil Reid

Publisher: Springer Science & Business Media

ISBN: 9783540276104

Category: Science

Page: 560

View: 510

There has been very considerable progress in research into low-mass stars, brown dwarfs and extrasolar planets during the past few years, particularly since the fist edtion of this book was published in 2000. In this new edtion the authors present a comprehensive review of both the astrophysical nature of individual red dwarf and brown dwarf stars and their collective statistical properties as an important Galactic stellar population. Chapters dealing with the observational properies of low-mass dwarfs, the stellar mass function and extrasolar planets have been completely revised. Other chapters have been significantly revised and updated as appropriate, including important new material on observational techniques, stellar acivity, the Galactic halo and field star surveys. The authors detail the many discoveries of new brown dwarfs and extrasolar planets made since publication of the first edition of the book and provide a state-of-the-art review of our current knowledge of very low-mass stars, brown dwarfs and extrasolar planets, including both the latest observational results and theoretical work.
Categories: Science

Variables Stars and the Astrophysical Returns of the Microlensing Surveys

Variables Stars and the Astrophysical Returns of the Microlensing Surveys

Astr . Astrophys . in press [ 8 ] Whitelock , P.A. 1997 this volume [ 9 ] Winters , J.M. , Fleischer , A.J. , Sedlmayer , E. 1996. The Carbon Star Phenomenon , ed . Wing R.F. , Kluwer Editions ( in press ) DENIS OBSERVATIONS OF AGB ...

Author: Roger Ferlet

Publisher: Atlantica Séguier Frontières

ISBN: 286332215X

Category: Gravitational lenses

Page: 456

View: 239

Categories: Gravitational lenses

Spectral Atlas for Amateur Astronomers

Spectral Atlas for Amateur Astronomers

Carbon. Stars. on. the. AGB. 15.3 The Morgan–Keenan (MK) C-System Due to difficulties with the ... The phenomenon of carbon stars is still far from being fully understood [45]. For the S class, in spite of ongoing disputes, ...

Author: Richard Walker

Publisher: Cambridge University Press

ISBN: 9781316738764

Category: Science

Page:

View: 457

Featuring detailed commented spectral profiles of more than one hundred astronomical objects, in colour, this spectral guide documents most of the important and spectroscopically observable objects accessible using typical amateur equipment. It allows you to read and interpret the recorded spectra of the main stellar classes, as well as most of the steps from protostars through to the final stages of stellar evolution as planetary nebulae, white dwarfs or the different types of supernovae. It also presents integrated spectra of stellar clusters, galaxies and quasars, and the reference spectra of some terrestrial light sources, for calibration purposes. Whether used as the principal reference for comparing with your recorded spectra or for inspiring independent observing projects, this atlas provides a breathtaking view into our Universe's past. The atlas is accompanied and supplemented by Spectroscopy for Amateur Astronomers, which explains in detail the methods for recording, processing, analysing and interpreting your spectra.
Categories: Science

Astrophysics and Space Science

Astrophysics and Space Science

For instance, Lattanzio & Boothroyd (1997) found for a model of initially 6Mg, that HBB prevents the star for most of its AGB lifetime to become a C star. ... El Eid M., 1997, The Carbon Star Phenomenon, IAU Symp. 177, ed.

Author: L.B.F.M. Waters

Publisher: Springer Science & Business Media

ISBN: 9789401150767

Category: Science

Page: 530

View: 609

The successful launch on November 17, 1995 of ESA's Infrared Space Observatory (ISO) by means of an Ariane 4 carrier, has set in motion a true revolution in quantitative infrared astronomy. For the first time since the very successful IRAS mission in 1983, the astronomical community has uninterrupted access to the infrared part of the electromagnetic spectrum. The four focal plane instruments on board of ISO ( the camera ISOCAM, the photometerjcamera ISOPHOT, and the short and long wavelength spec trographs ISO-SWS and ISO-LWS), perform very well and live up to the high expectations all of us had at launch. In the spring of 1996, Thijs de Graauw (principal investigator of the SWS) first suggested the idea to organize a conference dedicated to ISO re sults in the area of stars and circumstellar matter, and coined the title ISO 's View on Stellar Evolution. At the first scientific meeting to highlight some of the early ISO results which was held in May of 1996 at ESA's laboratory ESTEC in Noordwijk, the Netherlands, the conference was announced and a preliminary science organizing committee was formed. The conference was held from July 1 to 4, 1997, in conference centre de Leeuwenhorst, Noord wijkerhout, the Netherlands. The conference was opened by the Director of ESA 's Science Programme, Professor R. Bonnet.
Categories: Science

Fundamental Stellar Properties The Interaction Between Observation and Theory

Fundamental Stellar Properties  The Interaction Between Observation and Theory

AGB Thermal Pulse Dynamics as a Selected Example As discussed by several at this conference (i.e. Lattanzio, Boothroyd, Charbonnel) the chemical abundances in AGB stars, and indeed the carbon-star phenomenon, is not easily solved with ...

Author: Timothy R. Bedding

Publisher: Springer Science & Business Media

ISBN: 9789401156028

Category: Science

Page: 478

View: 229

This Symposium began with a proposal for a meeting to honour Emer itus Professor Robert Hanbury Brown on the occasion of his 80th birthday. He requested that any such meeting should be on a topic that would be of benefit to the Sydney University Stellar Interferometer (SUSI) program. With SUSI and several other high angular resolution instruments either in operation or coming on line within the next decade, and with advances in astrometry, spectroscopy and in theoretical models of stellar atmospheres and interiors, it appeared to be both appropriate and timely to hold a symposium on "Fundamental Stellar Properties: the Interaction between Observation and Theory. " The emphasis of the meeting was on the critical assessment of the qual ity, accuracy, and prospects for improvement of the observational data and theoretical models, on the outstanding problems in stellar astrophysics, and on the feasibility of achieving the observational and theoretical advances required for their solution. Invited papers comprised the major part of the oral program and the speakers responded to the challenge issued by the Scientific Organising Committee to critically review the current status and prospects for their area of expertise. The Symposium was opened by the Chancellor of the University of Sydney, Emeritus Professor Dame Leonie Kramer, who welcomed the 126 participants from 22 countries on behalf of the University. The oral program included . 52 invited reviews and papers and 10 contributed papers.
Categories: Science

Giants of Eclipse The Aurigae Stars and Other Binary Systems

Giants of Eclipse  The    Aurigae Stars and Other Binary Systems

'Classical' carbon-star spectra are dominated by features such as C2, C2H2, C3, CN and HCN (Goebel et al. 1981; Lançon and Wood 2000); the high carbon abundance is attributed to the third dredgeup phenomenon in the transition from AGB ...

Author: Thomas B. Ake

Publisher: Springer

ISBN: 9783319091983

Category: Science

Page: 202

View: 220

The zeta Aurigae stars are the rare but illustrious sub-group of binary stars that undergo the dramatic phenomenon of "chromospheric eclipse". This book provides detailed descriptions of the ten known systems, illustrates them richly with examples of new spectra, and places them in the context of stellar structure and evolution. Comprised of a large cool giant plus a small hot dwarf, these key eclipsing binaries reveal fascinating changes in their spectra very close to total eclipse, when the hot star shines through differing heights of the "chromosphere", or outer atmosphere, of the giant star. The phenomenon provides astrophysics with the means of analyzing the outer atmosphere of a giant star and how that material is shed into space. The physics of these critical events can be explained qualitatively, but it is more challenging to extract hard facts from the observations, and tough to model the chromosphere in any detail. The book offers current thinking on mechanisms for heating a star's chromosphere and on how a star loses mass, and relates this science synergistically to studies of other stars and binaries, and to the increasing relevance of contributions from new techniques in interferometry and asteroseismology. It also includes a detailed discussion of the enigmatic star epsilon Aurigae, which had recently undergone one of its very infrequent and very baffling eclipses. Though not a zeta Aurigae system, epsilon Aurigae is a true "Giant" among eclipsing stars. The 7 chapters of this book, written by a group of experts, have been carefully edited to form a coherent volume that offers a thorough overview of the subject to both professional and student.
Categories: Science

Post AGB Objects as a Phase of Stellar Evolution

Post AGB Objects as a Phase of Stellar Evolution

The col10 15 20 ors of RV Tau stars are cited H-[25] from the literatures. ... Albinson, J.S., Bode, M.F., MNRAS 1987, 227, 143 Hrivnak, B.J., Lu, W., 2000, in The Carbon Star Phenomenon, ed. Wing, R.F.,Proc. IAU Symp. 177, p.

Author: R. Szczerba

Publisher: Springer Science & Business Media

ISBN: 9789401596886

Category: Science

Page: 448

View: 263

The term proto-planetary nebulae (PPNe) in the context of the late stages of stellar evolution was created only slightly more than 20 years ago to express the belief that in the near future these objects will become planetary nebulae (PNe). The first proto-planetary nebulae (called also post-Asymptotic Giant Branch, or shortly post-AGB objects) AFGL 2688 and AFGL 618 were discovered in mid seventies in course of the Air Force Sky Survey. Investigation of this phase of stellar evolution developed very rapidly in 1980's after the IRAS mission when it became clear that proto-planetary nebulae emit a significant part of their energy in the mid-and far-infrared. Hundreds of new candidates have been proposed but the recognition of the real proto-planetary nebulae is not a simple task and needs a substantial effort to exclude cases that represent different evolutionary stages. High resolution spectroscopy of stellar atmospheres is of much importance in this respect. Surprisingly, only a small group of central stars, the so called 21 11m emitters, show chemical signatures of the 3 rd dredge up process. Very recently, a more detailed studies of mid-infrared spectra from the Infrared Space Observatory (ISO) allow for a better understanding of chemical composition and evolution of circumstellar material around these stars. A new impetus in the field of proto-planetary nebulae research was started in the 1990's with high spatial resolution imaging in mid-infrared and optical wavelength ranges.
Categories: Science