Dense Molecular Gas Around Protostars And in Galactic Nuclei

by Baan, Willem A.; Hagiwara, Y.; Langevelde, H. J. Van; European Workshop on Astronomical Molecu

• ISBN13: 9781402030383
• ISBN10: 140203038X
• Format: Hardcover
• Copyright: 2005-07-30
• Publisher: Springer Verlag

Summary

The phenomena observed in young stellar objects (YSO), circumstellar regions and extra-galactic nuclei show some similarity in their morphology, dynamical and physical processes, though they may differ in scale and energy.The European Workshop on Astronomical Molecules 2004 gave astronomers a unique opportunity to discuss the links among the observational results and to generate common interpretations of the phenomena in stars and galaxies, using the available diagnostic tools such as masers and dense molecular gas. Their theoretical understanding involves physics, numerical simulations and chemistry.Including a dozen introductory reviews, topics of papers in this book also cover: maser and dense gas diagnostics and related phenomena, evolution of circumstellar regions around protostars, evolution of circumnuclear regions of active galaxies, diagnostics of the circumnuclear gas in stars and galactic nuclei.This book summarizes our present knowledge in these topics, highlights major problems to be addressed, and finally proposes future work.

Table of Contents

Foreword	1	(4)
YOUNG STELLAR OBJECTS (YSO) EVOLUTION
R. CESARONI
Outflow, Infall, and Rotation in High-Mass Star Forming Regions	5	(14)
A.M.S. RICHARDS, R.J. COHEN, M. CROCKER, E.E. LEKHT, E. MENDOZA and V.A. SAMODUROV
MERLIN and Puschino Observations of H2O Masers in Outer Galactic SFR S128N	19	(8)
J. COHEN
Observing Magnetic Fields in Star-Forming Regions	27	(10)
A. NIEZURAWSKA, M. SZYMCZAK, A.M.S. RICHARDS and R.J. COHEN
Evidence for Co-Propagation of 4765- and 1720-MHz OH Masers in Star-Forming Regions	37	(6)
D. GALLI
Magnetic Fields in Star-Forming Regions: Theoretical Aspects	43	(10)
J.M. TORRELLES, N. PATEL, J.F. GÓMEZ, G. ANGLADA and L. USCANGA
VLBI Water Maser Proper Motion Measurements in Star-Forming Regions	53	(12)
I. DE GREGORIO-MONSALVO, C.J. CHANDLER, J.F. GÓMEZ, T.B.H. KUIPER, J.M. TORRELLES and G. ANGLADA
High-Resolution Observations in B1-IRS: Ammonia, CCS and Water Masers	65	(6)
HIROSHI IMAI and ANUJ P. SARMA
The Kinematics, Physical Condition and Magnetic Field of the W3 IRS5 Region	71	(6)
C. GODDI, L. MOSCADELLI, W. ALEF and J. BRAND
EVN Observations of H2O Masers Towards the High-Mass Young Stellar Object in AFGL 5142	77	(8)
AGN/STARBURST EVOLUTION
J.H. KNAPEN
Gravitationally Induced Inflow in Starbursts and AGN	85	(10)
M. KRIPS, A. ECKART, R. NERI, J.-U. POTT, J. ZUTHER, J. SCHARWÄCHTER and T. BERTRAM
Feeding Monsters - A Study of Active Galaxies	95	(6)
J. SCHARWÄCHTER, A. ECKART, S. PFALZNER, J. ZUTHER, M. KRIPS, E. SCHINNERER and J. STAGUHN
The QSO Hosts I Zw 1 and 3C 48: Prototypes of a Merger-Driven Quasar Evolution?	101	(6)
C. HENKEL, J.A. BRAATZ, A. TARCHI, A.B. PECK, N.M. NAGAR, L.J. GREENHILL, M. WANG and Y. HAGIWARA
H2O Megamasers: Accretion Disks, Jet Interaction, Outflows or Massive Star Formation?	107	(10)
A. TARCHI, C. HENKEL, M. CHIABERGE, K.M. MENTEN, A. BRUNTHALER and L. MOSCADELLI
Probing the Obscuring Medium Around Active Nuclei Using Masers: The Case of 3C 403	117	(8)
Y. HAGIWARA
Low-Luminosity Extra-Galactic H2O Masers	125	(8)
STATISTICAL APPROACH
J. BRAND, R. CESARONI, G. COMORETTO, M. FELLI, F. PALAGI, F. PALLA and R. VALDETTARO
Monitoring Water Masers in Star-Forming Regions	133	(10)
S. AALTO
Dense Gas, Chemistry and Star Formation in Luminous Galaxies	143	(12)
E. OLSSON, S. AALTO and S. HÜTTEMEISTER
A Molecular Ring in the Liner NGC 5218	155	(6)
A. PEDLAR
Neutral Gas in Starbursts and Active Galactic Nuclei	161	(10)
F.P. ISRAEL
CO, ¹³CO, and [CI] in Galaxy Centers	171	(8)
DIAGNOSTICS OF YSO
M.R. HOGERHEIJDE
Chemical Evolution of Protostars	179	(10)
A.M. SOBOLEV, E.C. SUTTON, D.M. CRAGG and RD. GODFREY
Model of the W3(OH) Environment Based on Data for Both Maser and "Quasi-Thermal" Methanol Lines	189	(8)
S. GOEDHART, M.J. GAYLARD and D.J. VAN DER WALT
Long-Term Monitoring of 6.7- and 12.2-GHZ Methanol Masers	197	(6)
M.G. HOARE
Ultra-Compact H II Regions	203	(14)
M. VORONKOV, A. SOBOLEV, S. ELLINGSEN, A. OSTROVSKII and A. ALAKOZ
Maser Action in Methanol Transitions	217	(8)
C.J. PHILLIPS and H.J. VAN LANGEVELDE
The Methanol Maser Emission in W51	225	(6)
M. PESTALOZZI, M. ELITZUR, J. CONWAY and R. BOOTH
NGC7538 IRS 1 N: Modeling a Circumstellar Maser Disk	231	(8)
DIAGNOSTICS OF AGN/STARBURSTS
M. SPAANS and R. MEIJERINK
Dense Molecular Gas Around Protostars and in Galactic Nuclei: PDRs and XDRs	239	(10)
H.J. VAN LANGEVELDE, Y. PIHLSTRÖM and A. BEASLEY
Molecular Absorption in Cen A on VLBI Scales	249	(8)
M.R. HUNT and J.B. WHITEOAK
High-Resolution Acta Observations of the Circumnuclear Molecular Clouds of NGC 4945	257	(6)
W.A. BAAN, H.-R. KLÖCKNER
Megamasers: Molecular Diagnostics of the Nuclear ISM	263	(14)
H.-R. KLÖCKNER and W.A. BAAN
Understanding Extragalactic Hydroxyl	277	(8)
E.M.L. HUMPHREYS, A.L. ARGON, L.J. GREENHILL, M.J. REID and J.M. MORAN
The Sub-PC Scale Accretion Disk of NGC 4258	285	(6)
Y.M. PIHLSTRÖM
OH Megamasers: Circumnuclear Gas in Starbursts	291	(6)
A.G. POLATIDIS, J.E. CONWAY, Y.M. PIHLSTRÖM and R. PARRA
Continuum EVN and MERLIN Observations of Ultra Luminous Infrared Galaxies	297	(6)
T. BERTRAM, A. ECKART, M. KRIPS and J. STAGUHN
Molecular Gas in the Abell 262 Cluster Galaxy UGC 1347	303	(6)
M. GRAY
Dense Gas Diagnostics: Maser Excitation and Variability	309	(10)
J. CONWAY, M. ELITZUR and R. PARRA
Spectral Line and Continuum Radiation Propagation in a Clumpy Medium	319	(6)
R. PARRA, J. CONWAY and M. ELITZUR
A Thin Ring Model for the OH Megamaser in IIIZw35	325