Astrophysics

Authors and titles for April 2005

[251] arXiv:astro-ph/0504251 [pdf, other]

Title: GCRT J1745-3009: A precessing radio pulsar?

W. W. Zhu (PKU), R. X. Xu (PKU)

Comments: 6 page and 3 figures. Accepted for publication in MN LETTERS

Journal-ref: Mon.Not.Roy.Astron.Soc.Lett.365:L16,2006

Subjects: Astrophysics (astro-ph)

[252] arXiv:astro-ph/0504252 [pdf, other]

Title: Luminosity-Dependent Quasar Lifetimes: A New Interpretation of the Quasar Luminosity Function

Philip F. Hopkins (1), Lars Hernquist (1), Thomas J. Cox (1), Tiziana Di Matteo (2), Brant Robertson (1), Volker Springel (2) ((1) Harvard U., (2) MPA)

Comments: 5 pages, 3 figures. Accepted for publication in ApJ (September 2005). Replacement with minor revisions from referee

Journal-ref: Astrophys.J. 630 (2005) 716-720

Subjects: Astrophysics (astro-ph)

[253] arXiv:astro-ph/0504253 [pdf, other]

Title: Luminosity-Dependent Quasar Lifetimes: Reconciling the Optical and X-ray Quasar Luminosity Functions

Philip F. Hopkins (1), Lars Hernquist (1), Thomas J. Cox (1), Tiziana Di Matteo (2), Brant Robertson (1), Volker Springel (2) ((1) Harvard U., (2) MPA)

Comments: 9 pages, 4 figures. Accepted for publication in ApJ, October 2005. Revised and expanded with comments from referee report

Journal-ref: Astrophys.J. 632 (2005) 81-91

Subjects: Astrophysics (astro-ph)

[254] arXiv:astro-ph/0504254 [pdf, other]

Title: Afterglow Light Curves from Impulsive Relativistic Jets with an Unconventional Structure

Jonathan Granot

Comments: 26 pages, 8 figures; submitted to ApJ

Journal-ref: Astrophys.J. 631 (2005) 1022-1031

Subjects: Astrophysics (astro-ph)

[255] arXiv:astro-ph/0504255 [pdf, other]

Title: An X-ray Transient and Optical Counterpart in the M31 Bulge

Benjamin F. Williams, Michael R. Garcia, Jeffrey E. McClintock, Albert K. H. Kong, Frank A. Primini, Stephen S. Murray

Comments: 16 pages, 4 tables, 2 figures, accepted for publication in ApJ

Journal-ref: Astrophys.J. 628 (2005) 382-387

Subjects: Astrophysics (astro-ph)

[256] arXiv:astro-ph/0504256 [pdf, other]

Title: The Birth of Massive Stars and Star Clusters

Jonathan C. Tan (ETH Zurich)

Comments: 17 pages, Review article to appear in proceedings of the "Cores to Clusters" meeting held in Porto, Portugal, Oct. 2004. Comments welcome

Subjects: Astrophysics (astro-ph)

[257] arXiv:astro-ph/0504257 [pdf, other]

Title: Supernovae and Gamma-Ray Bursts Powered by Hot Neutrino-Cooled Coronae

Enrico Ramirez-Ruiz, Aristotle Socrates

Comments: submitted to ApJ

Subjects: Astrophysics (astro-ph)

[258] arXiv:astro-ph/0504258 [pdf, other]

Title: Line Polarization of Molecular Lines at Radio Frequencies: The case of DR21(OH)

P. C. Cortes, R. M. Crutcher, W. D. Watson

Comments: Accepted for publication in ApJ

Journal-ref: Astrophys.J. 628 (2005) 780-788

Subjects: Astrophysics (astro-ph)

[259] arXiv:astro-ph/0504259 [pdf, other]

Title: Complex Topology of the Magnetic Field in Strong Flares

R.N. Ikhsanov, Yu.V. Marushin, N.R. Ikhsanov

Comments: 2 pages, 1 figure, Proceedings of IAU Symp. 223, Volume 2004, page 257

Subjects: Astrophysics (astro-ph)

[260] arXiv:astro-ph/0504260 [pdf, other]

Title: Gravitational Microlensing and the Structure of Quasar Outflows

Doron Chelouche

Comments: 6 pages, 6 figures (low resolution format), accepted for publication in ApJ

Journal-ref: Astrophys.J. 629 (2005) 667-672

Subjects: Astrophysics (astro-ph)

[261] arXiv:astro-ph/0504261 [pdf, other]

Title: Energy-dependent variability from accretion flows

Andrzej A. Zdziarski

Comments: MNRAS, in press, 9 pages

Journal-ref: Mon.Not.Roy.Astron.Soc. 360 (2005) 801-815

Subjects: Astrophysics (astro-ph)

[262] arXiv:astro-ph/0504262 [pdf, other]

Title: The temperature structure in the core of Sersic 159-03

J. de Plaa, J. S. Kaastra, M. Mendez, T. Tamura, J. A. M. Bleeker, J. R. Peterson, F. B. S. Paerels, M. Bonamente, R. Lieu

Comments: 7 pages and 4 figures. Contribution to the proceedings of the COSPAR Scientific Assembly, session E1.2 "Clusters of Galaxies: New Insights from XMM-Newton, Chandra and INTEGRAL", july 2004, Paris (France). Accepted for publication in Advances in Space Research

Journal-ref: Adv.Space Res. 36 (2005) 601-604

Subjects: Astrophysics (astro-ph)

[263] arXiv:astro-ph/0504263 [pdf, other]

Title: Discovery of 10 micron silicate emission in quasars. Evidence of the AGN unification scheme

R. Siebenmorgen, M. Haas, E. Kr"ugel, B. Schulz

Comments: accepted A&A Letters: 2 Fig., 4 pages

Subjects: Astrophysics (astro-ph)

[264] arXiv:astro-ph/0504264 [pdf, other]

Title: The Structure and Star Formation History of Early-Type Galaxies in the UDF/GRAPES Survey

A. Pasquali, I. Ferreras, N. Panagia, E. Daddi, S. Malhotra, J.E. Rhoads, N. Pirzkal, R.A. Windhorst, A. Koekemoer, L. Moustakas, C. Xu, C. Gronwall

Comments: 21 pages, 13 figures, accepted by ApJ. Higher quality figures are available at this http URL

Journal-ref: Astrophys.J.636:115-133,2005

Subjects: Astrophysics (astro-ph)

[265] arXiv:astro-ph/0504265 [pdf, other]

Title: Entropy amplification from energy feedback in simulated galaxy groups and clusters

S. Borgani, A. Finoguenov, S.T. Kay, T.J. Ponman, V. Springel, P. Tozzi, G.M. Voit

Comments: 12 pages, 7 figures to appear in MNRAS. Full resolution preprint available at this http URL

Journal-ref: Mon.Not.Roy.Astron.Soc. 361 (2005) 233-243

Subjects: Astrophysics (astro-ph)

[266] arXiv:astro-ph/0504266 [pdf, other]

Title: Scattering properties and composition of cometary dust

Ranjan Gupta, D.B. Vaidya, J.S. Dobbie, P. Chylek

Comments: 22 pages, 11 figures. To appear in Astrophysics & Space Science, 2005

Journal-ref: Astrophys.Space Sci. 301 (2006) 21-31

Subjects: Astrophysics (astro-ph)

[267] arXiv:astro-ph/0504267 [pdf, other]

Title: Two-temperature accretion flows in magnetic cataclysmic variables: Structures of post-shock emission regions and X-ray spectroscopy

Curtis Saxton (1,2), Kinwah Wu (1), Mark Cropper (1), Gavin Ramsay (1), ((1) MSSL/UCL, (2) Max-Planck-Institut, Bonn)

Comments: Accepted MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc. 360 (2005) 1085-1090

Subjects: Astrophysics (astro-ph)

[268] arXiv:astro-ph/0504268 [pdf, other]

Title: ASCA and XMM-Newton Observations of A2029

S. Miyoshi, N. Tanaka, M. Yoshimura, K. Yamashita, A. Furuzawa, T. Futamura, M. Hudaverdi

Comments: 8 pages, 13 figures, accepted for publication in Advances in Space Research

Subjects: Astrophysics (astro-ph)

[269] arXiv:astro-ph/0504269 [pdf, other]

Title: Air Cherenkov Methods in Cosmic Rays: A Review and Some History

A. S. Lidvansky

Comments: 11 pages, 5 figures, invited talk presented at the conference P.A. Cherenkov and Modern Physics (Moscow, June 22-25, 2004) commemorating P.A. Cherenkov centenary. Submitted for publication to Journal of Radiation Physics and Chemistry

Subjects: Astrophysics (astro-ph)

[270] arXiv:astro-ph/0504270 [pdf, other]

Title: The HI content of Fornax dwarf elliptical galaxies: FCC032 and FCC336

P. Buyle, S. De Rijcke, D. Michielsen, M. Baes, H. Dejonghe

Comments: 7 pages, 7 figures, accepted for publication in MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc.360:839-852,2005

Subjects: Astrophysics (astro-ph)

[271] arXiv:astro-ph/0504271 [pdf, other]

Title: Organic Molecules in the Hot Corinos and Circumstellar Disks of IRAS 16293-2422

H.-C. Huang (1), Y.-J. Kuan (1 and 2), S. B. Charnley (3), N. Hirano (2), S. Takakuwa (4), T. L. Bourke (5) ((1) National Taiwan Normal Univ, (2) Academia Sinica Inst. of Astronomy and Astrophysics, Taiwan, (3) NASA Ames, (4) SMA, Hilo (5) CfA)

Comments: 17 pages, 4 figures, to be published in Advances in Space Research

Journal-ref: Adv.Space Res.36:146-155,2005

Subjects: Astrophysics (astro-ph)

[272] arXiv:astro-ph/0504272 [pdf, other]

Title: Low energy conversion electron detection in superfluid He3 at ultra-low temperature

E. Moulin, C. Winkelmann, J. F. Macias-Perez, Yu. M. Bunkov, H. Godfrin, D. Santos

Comments: 8 pages, 3 figures, to appear in NIMA

Journal-ref: Nucl.Instrum.Meth.A548:411-417,2005

Subjects: Astrophysics (astro-ph)

[273] arXiv:astro-ph/0504273 [pdf, other]

Title: MHD Interaction of Pulsar Wind Nebulae with SNRs and the ISM

Eric van der Swaluw

Comments: 11 pages, 3 figures, Advances in Space Research, in press

Subjects: Astrophysics (astro-ph)

[274] arXiv:astro-ph/0504274 [pdf, other]

Title: Constrained Cluster Parameters from Sunyaev-Zel'dovich Observations

Neelima Sehgal, Arthur Kosowsky, Gilbert Holder

Comments: 31 pages, 15 figures. Typo corrected; accepted by ApJ

Journal-ref: Astrophys.J.635:22-34,2005

Subjects: Astrophysics (astro-ph)

[275] arXiv:astro-ph/0504275 [pdf, other]

Title: Dark Energy - Dark Matter Unification: Generalized Chaplygin Gas Model

Orfeu Bertolami

Comments: 15 pages, 5 figures; Talk presented at the V New Worlds in Astroparticle Physics, Faro, Portugal, 8-10 January 2005. Reference and numbering of equations fixed

Subjects: Astrophysics (astro-ph)

[276] arXiv:astro-ph/0504276 [pdf, other]

Title: IRS 16SW - A New Comoving Group of Young Stars in the Central Parsec of the Milky Way

J. R. Lu, A. M. Ghez, S. D. Hornstein, M. Morris, E. E. Becklin

Comments: 10 pages, 1 figure, accepted for ApJL, uses emulateapj

Journal-ref: Astrophys.J.625:L51-L54,2005

Subjects: Astrophysics (astro-ph)

[277] arXiv:astro-ph/0504277 [pdf, other]

Title: Simultaneous ram pressure and tidal stripping; how dwarf spheroidals lost their gas

Lucio Mayer (<a href="http://U.Zurich" rel="external noopener nofollow" class="link-external link-http">this http URL</a>), Chiara Mastropietro (<a href="http://U.Zurich" rel="external noopener nofollow" class="link-external link-http">this http URL</a>), James Wadsley (McMaster U.), Joachim Stadel (<a href="http://U.Zurich" rel="external noopener nofollow" class="link-external link-http">this http URL</a>), Ben Moore (<a href="http://U.Zurich" rel="external noopener nofollow" class="link-external link-http">this http URL</a>)

Comments: 21 pages, 17 figures, submitted to MNRAS. High resolution version of the paper and movies can be found at this http URL

Journal-ref: Mon.Not.Roy.Astron.Soc.369:1021-1038,2006

Subjects: Astrophysics (astro-ph)

[278] arXiv:astro-ph/0504278 [pdf, other]

Title: On the Exotic Hard X-ray Source Populations in the Hellas2XMM survey

C. Vignali (Dipartimento di Astronomia, Universita` di Bologna, Italy), M. Mignoli (INAF-Osservatorio Astronomico di Bologna, Italy)

Comments: On behalf of the HELLAS2XMM Collaboration, 6 pages, 4 figures, contribution to the Proceedings of the COSPAR Scientific Assembly, E1.3 "High-Energy Radiation from Black Holes: from Supermassive Black Holes to Galactic Solar Mass Black Holes", Paris (France), July 18-25, 2004, accepted for publication in Advances in Space Research

Subjects: Astrophysics (astro-ph)

[279] arXiv:astro-ph/0504279 [pdf, other]

Title: Type 2 counterparts of narrow-line Seyfert 1 galaxies

G. C. Dewangan, R. E. Griffiths (Carnegie Mellon University)

Comments: 4 pages, To appear in ApJ Letters

Journal-ref: Astrophys.J. 625 (2005) L31-L34

Subjects: Astrophysics (astro-ph)

[280] arXiv:astro-ph/0504280 [pdf, other]

Title: Near Infrared Surface Properties of the Two Intrinsically Brightest Minor Planets (90377) Sedna and (90482) Orcus

Chadwick A. Trujillo, Michael E. Brown, David L. Rabinowitz, Thomas R. Geballe

Comments: Accepted for publication in the Astrophysical Journal

Journal-ref: Astrophys.J. 627 (2005) 1057-1065

Subjects: Astrophysics (astro-ph)

[281] arXiv:astro-ph/0504281 [pdf, other]

Title: The Complex Star Formation History of NGC 1569

L. Angeretti (1), M. Tosi (2), L. Greggio (3), E. Sabbi (1), A. Aloisi (4), Claus Leitherer (4) ((1) Bologna University, (2) INAF - Bologna, (3) INAF - Padova, (4) STScI)

Comments: Accepted by AJ, 2005, vol 129, 14 pages, 9 figures

Subjects: Astrophysics (astro-ph)

[282] arXiv:astro-ph/0504282 [pdf, other]

Title: Metal abundances in extremely distant Galactic old open clusters. II. Berkeley 22 and Berkeley 66

Sandro Villanova (Padova), Giovanni Carraro (UChile/Yale), Fabio Bresolin (IfA), Ferdinando Ptat (ESO)

Comments: 20 pages, 6 eps figures, accepted for publication in the Astronomical Journal

Journal-ref: Astron.J.130:652-658,2005

Subjects: Astrophysics (astro-ph)

[283] arXiv:astro-ph/0504283 [pdf, other]

Title: Abundances in giant stars of the globular cluster NGC 6752

David Yong (1,2), Frank Grundahl (3), Poul Erik Nissen (3), Henrik Robenhagen Jensen (3), David L. Lambert (1) ((1) Univ. of Texas at Austin, (2) Univ. of North Carolina, (3) Univ. of Aarhus)

Comments: Accepted for publication in A&A

Subjects: Astrophysics (astro-ph)

[284] arXiv:astro-ph/0504284 [pdf, other]

Title: Chandra Observations of the Interacting Galaxies NGC 3395/3396 (Arp 270)

N. J. Brassington (1), A. M. Read (2), T. J. Ponman (1) ((1) University of Birmingham, (2) University of Leicester)

Comments: 18 pages, 16 figures, accepted for publication in MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc. 360 (2005) -

Subjects: Astrophysics (astro-ph)

[285] arXiv:astro-ph/0504285 [pdf, other]

Title: The Payload Data Handling and Telemetry Systems of Gaia

Jordi Portell (1 and 2), Xavier Luri (3 and 1), Enrique Garcia-Berro (1 and 2), Enrique M. Geijo (2) ((1) Institut d'Estudis Espacials de Catalunya, (2) Dept. Fisica Aplicada UPC, (3) Dept. Astronomia i Meteorologia UB)

Comments: 4 pages, 7 figures, to appear in the Proceedings of the Symposium "The Three-dimensional Universe with Gaia", 4-7 October 2004, Observatoire de Paris-Meudon, France, eds: C. Turon, K.S. O'Flaherty, M.A.C. Perryman (ESA SP-576)

Subjects: Astrophysics (astro-ph)

[286] arXiv:astro-ph/0504286 [pdf, other]

Title: Supernova Blastwaves in Low-density Hot Media: a Mechanism for Spatially Distributed Heating

Shikui Tang, Q. Daniel Wang

Comments: 12 pages, 3 figures, 1 table, accepted for ApJ, uses aastex

Journal-ref: Astrophys.J. 628 (2005) 205

Subjects: Astrophysics (astro-ph)

[287] arXiv:astro-ph/0504287 [pdf, other]

Title: Total Galaxy Magnitudes and Effective Radii from Petrosian Magnitudes and Radii

Alister W. Graham, Simon P. Driver, Vahe' Petrosian, Christopher J. Conselice, Matthew A. Bershady, Steven M. Crawford, Tomotsugu Goto

Comments: AJ, in press after minor additions to the text (7 pages of text, plus 6 of figures and tables)

Journal-ref: Astron.J.130:1535 (2005)

Subjects: Astrophysics (astro-ph)

[288] arXiv:astro-ph/0504288 [pdf, other]

Title: Parameter Study of Star-Discs Encounters

S. Pfalzner, P. Vogel, J. Scharwaechter, C. Olczak

Comments: 11 pages, 9 figures

Subjects: Astrophysics (astro-ph)

[289] arXiv:astro-ph/0504289 [pdf, other]

Title: The Origin of UCDs in the Virgo Cluster

E.A. Evstigneeva, M.D. Gregg, M.J. Drinkwater

Comments: 3 pages, 3 figures. To be published in the Proceedings IAUC198, 2005

Subjects: Astrophysics (astro-ph)

[290] arXiv:astro-ph/0504290 [pdf, other]

Title: An indirect limit on the amplitude of primordial Gravitational Wave Background from CMB-Galaxy Cross Correlation

A. Cooray (UC Irvine), P.S. Corasaniti (ISCAP, New York), T. Giannantonio (Rome U.), A. Melchiorri (Rome U.)

Comments: 5 Pages, 1 Figure, revised discussion on cosmic variance limits on the tensor-to-scalar ratio from CMB, matches PRD accepted version

Journal-ref: Phys.Rev.D72:023514,2005

Subjects: Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Phenomenology (hep-ph)

[291] arXiv:astro-ph/0504291 [pdf, other]

Title: On ion-ion correlation effects during stellar core collapse

A. Marek (1), H.-Th. Janka (1), R. Buras (2), M. Liebendoerfer (3), M. Rampp (1) ((1) MPI for Astrophysics, (2) MPI for Physics, (3) CITA, Univ. Toronto)

Comments: 10 pages, 10 figures, revised version (ionic mixture case treated differently, EoS error removed), accepted by Astronomy & Astrophysics

Journal-ref: Astron.Astrophys. 443 (2005) 201-210

Subjects: Astrophysics (astro-ph)

[292] arXiv:astro-ph/0504292 [pdf, other]

Title: Strange stars and superbursts at near-Eddington mass accretion rates

Monika Sinha, Subharthi Ray, Mira Dey, Jishnu Dey

Subjects: Astrophysics (astro-ph)

[293] arXiv:astro-ph/0504293 [pdf, other]

Title: X-ray spectroscopy of PSR B1951+32 and its pulsar wind nebula

X.H. Li, F.J. Lu, T.P. Li

Comments: 12 pages, 10 figures, accepted by ApJ

Journal-ref: Astrophys.J. 628 (2005) 931-937

Subjects: Astrophysics (astro-ph)

[294] arXiv:astro-ph/0504294 [pdf, other]

Title: Gravitational waves, inflation and the cosmic microwave background: towards testing the slow-roll paradigm

Carlo Ungarelli, Pier Stefano Corasaniti, R.A. Mercer, Alberto Vecchio

Comments: 10 pages, 2 figures, uses this http URL. Typos corrected, references added, accepted for publication in Classical and Quantum Gravity

Journal-ref: Class.Quant.Grav. 22 (2005) S955-S964

Subjects: Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc)

[295] arXiv:astro-ph/0504295 [pdf, other]

Title: The creation of the Helix planetary nebula (NGC 7293) by multiple events

J. Meaburn (1), P. Boumis (2), J. A. Lopez (1), D. J. Harman (3,4), M. Bryce (3), M. P. Redman (5), F. Mavromatakis (6) ((1) Instituto de Astronomia, UNAM, Mexico, (2) Institute of Astronomy &amp; Astrophysics, National Observatory of Athens, Greece, (3) Jodrell Bank Observatory, University of Manchester, UK, (4) Liverpool John Moores University, UK, (5) Department of Physics, National University of Ireland Galway, Ireland, (6) University of Crete, Heraklion, Crete, Greece)

Comments: 17 pages, 11 figures, accepted for publication in MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc. 360 (2005) 950-962

Subjects: Astrophysics (astro-ph)

[296] arXiv:astro-ph/0504296 [pdf, other]

Title: Chandra HETGS Multi-Phase Spectroscopy of the Young Magnetic O Star theta^1 Orionis C

Marc Gagne, Mary E. Oksala, David H. Cohen, Stephanie K. Tonnesen, Asif ud-Doula, Stanley P. Owocki, Richard H. D. Townsend, Joseph J. MacFarlane

Comments: 52 pages, 14 figures (1 color), 6 tables. To appear in the Astrophysical Journal, 1 August 2005, v628, issue 2. New version corrects e-mail address, figure and table formatting problems

Journal-ref: Astrophys.J.628:986-1005,2005; Erratum-ibid.634:712,2005

Subjects: Astrophysics (astro-ph)

[297] arXiv:astro-ph/0504297 [pdf, other]

Title: Radio-Detection Signature of High Energy Cosmic Rays by the CODALEMA Experiment

D. Ardouin, A. Bellétoile, D. Charrier, R. Dallier, L. Denis, P. Eschstruth, T. Gousset, F. Haddad, J. Lamblin, P. Lautridou, A. Lecacheux, D. Monnier-Ragaigne, A. Rahmani, O. Ravel

Comments: merge of astro-ph/0504240 and astro-ph/0504297 into one paper

Journal-ref: Nucl.Instrum.Meth.A555:148,2005

Subjects: Astrophysics (astro-ph)

[298] arXiv:astro-ph/0504298 [pdf, other]

Title: Chemical processes in star forming regions

Paola Caselli (INAF-Arcetri)

Comments: Review article to appear in proceedings of the "Cores to Clusters" meeting held in Porto, Portugal, October 2004

Subjects: Astrophysics (astro-ph)

[299] arXiv:astro-ph/0504299 [pdf, other]

Title: On the Sensitivity of Deflagrations in Chandrasekhar Mass White Dwarf to Initial Conditions

Eli Livne, Shimon M. Asida, Peter Hoeflich

Comments: 13 pages, 5 figures, ApJ submitted

Journal-ref: Astrophys.J. 632 (2005) 443-449

Subjects: Astrophysics (astro-ph)

[300] arXiv:astro-ph/0504300 [pdf, other]

Title: The 2dF-SDSS LRG and QSO Survey: The z<2.1 Quasar Luminosity Function from 5645 Quasars to g=21.85

G.T. Richards, S.M. Croom, S.F. Anderson, J. Bland-Hawthorn, B.J. Boyle, R. De Propris, M.J. Drinkwater, X. Fan, J.E. Gunn, Z. Ivezic, S. Jester, J. Loveday, A. Meiksin, L. Miller, A. Myers, R.C. Nichol, P.J. Outram, K.A. Pimbblet, I.G. Roseboom, N. Ross, D.P. Schneider, T. Shanks, R.G. Sharp, C. Stoughton, M.A. Strauss, A.S. Szalay, D.E. Vanden Berk, D.G. York

Comments: MNRAS, accepted; 15 pg., 14 fig. (9 color); high res. version at this http URL

Journal-ref: Mon.Not.Roy.Astron.Soc.360:839-852,2005

Subjects: Astrophysics (astro-ph)