Astrophysics

Authors and titles for December 2000

[101] arXiv:astro-ph/0012101 [pdf, other]

Title: Formation of the Planetary Sequence in a Highly Flattened Disk of Frequently Colliding Planetesimals

Evgeny Griv (1), Michael Gedalin (1), Edward Liverts (1), David Eichler (1), Chi Yuan (2) ((1) Department of Physics, Ben-Gurion University of the Negev, Israel, (2) Academia Sinica Institute of Astronomy and Astrophysics (ASIAA), Taiwan)

Comments: 3 pages, 1 figure, presented by E. Griv at the IAU Symp. 202, Manchester, UK, 2000

Subjects: Astrophysics (astro-ph)

[102] arXiv:astro-ph/0012102 [pdf, other]

Title: The Core-Wing Anomaly of Cool Ap Stars: Abnormal Balmer Profiles

Charles R. Cowley, S. Hubrig, T. A. Ryabchikova, G. Mathys, N. Piskinov, P. Mittermayer

Comments: 4 Pages 5 Figures. Submitted to Astronomy and Astrophysics 4 Dec. 2000

Subjects: Astrophysics (astro-ph)

[103] arXiv:astro-ph/0012103 [pdf, other]

Title: X-ray emission in the direction of the SNR G318.2+0.1

F. Bocchino (ESA-Estec), A.N. Parmar (ESA-Estec), S. Mereghetti (IFCTR-CNR), M. Orlandini (ITeSRE-CNR), A. Santangelo (IFCAI-CNR), L. Angelini (GSFC-NASA)

Comments: 7 pages, 4 figures, accepted for publication in A&A, abstract was hidden, now it is OK

Subjects: Astrophysics (astro-ph)

[104] arXiv:astro-ph/0012104 [pdf, other]

Title: Proper motion of very low mass stars and brown dwarfs in the Pleiades cluster

E. Moraux, J. Bouvier, J.R. Stauffer

Comments: 7 pages, 2 tables, 2 figures, accepted by A&A

Subjects: Astrophysics (astro-ph)

[105] arXiv:astro-ph/0012105 [pdf, other]

Title: The ROSAT-ESO Flux-Limited X-Ray (REFLEX) Galaxy Cluster Survey III: The Power Spectrum

Peter Schuecker, Hans Boehringer, Luigi Guzzo, Chris A. Collins, Doris M. Neumann, Sabine Schindler, Wolfgang Voges, Sabrina De Grandi, Guido Chincarini, Ray Cruddace, Volker Mueller, Thomas H. Reiprich, Joerg Retzlaff, Peter Shaver

Comments: 22 pages, 20 figures, (A&A accepted), also available at this http URL

Subjects: Astrophysics (astro-ph)

[106] arXiv:astro-ph/0012106 [pdf, other]

Title: Heating the Quiet Corona by Nanoflares: Evidence and Problems

Arnold O. Benz, Sam Krucker (Institute of Astronomy, ETH Zurich, Space Sciences Laboratory, UCB, Berkeley)

Comments: APS Conference Series, in press

Subjects: Astrophysics (astro-ph)

[107] arXiv:astro-ph/0012107 [pdf, other]

Title: BeppoSAX confirmation of beamed afterglow emission from GRB990510

Elena Pian, Paolo Soffitta, Alessandro Alessi, Lorenzo Amati, Enrico Costa, Filippo Frontera, Andrew Fruchter, Nicola Masetti, Eliana Palazzi, Alin Panaitescu, Pawan Kumar

Comments: 7 pages, Latex, 3 PostScript figures, in press in the A&A. A substantial addition has been made, wrt submitted version, due to evidence that the GRB prompt event and its afterglow have different timing. Format problem fixed

Subjects: Astrophysics (astro-ph)

[108] arXiv:astro-ph/0012108 [pdf, other]

Title: On the use of a heterogeneous MIMD-SIMD platform to simulate the dynamics of globular clusters with a central massive object

R. Capuzzo-Dolcetta (1), N. Pucello (2,3), V. Rosato (2,4), F. Saraceni (2) ((1) Phys. Dept., Universita' di Roma "La Sapienza", Roma, Italy; (2) ENEA, Casaccia Research Center, HPCN Project, Roma, Italy; (3) CASPUR, Universita' di Roma "La Sapienza", Roma, Italy; (4) Istituto Nazionale di Fisica della Materia (INFM), UdR Roma I, Roma, Italy)

Comments: 10 pages+12 eps figures; submitted to Journ. of Comp. Physics

Subjects: Astrophysics (astro-ph)

[109] arXiv:astro-ph/0012109 [pdf, other]

Title: Lost and Found: The Damped Lyman Alpha Absorbers in the QSO OI 363

Judith G. Cohen

Comments: Submitted to the AJ August 7, 2000, accepted for publication Dec. 5, 2000 8 pages, with one figure

Subjects: Astrophysics (astro-ph)

[110] arXiv:astro-ph/0012110 [pdf, other]

Title: Optical Surface Photometry of a Sample of Disk Galaxies. II Structural Components

M. Prieto, J. A. L. Aguerri, A. M. Varela, C. Muñoz-Tuñón

Comments: 14 figures. Accepted for publication in A&A

Subjects: Astrophysics (astro-ph)

[111] arXiv:astro-ph/0012111 [pdf, other]

Title: Chandra--ASCA--RXTE observations of the micro-quasar GRS 1915+105

J.C. Lee (MIT), N.S. Schulz (MIT), C.S. Reynolds (JILA), A.C. Fabian (IoA-Cambridge), E.G. Blackman (U. Rochester)

Comments: 6 pages, 4 figures, Contributed talk at "X-ray Astronomy 2000" meeting, Palermo, Italy, Sept. 2000. Proceedings to be published in ASP Conference series, eds. R. Giaconni, L. Stella, & S. Serio, 2000

Subjects: Astrophysics (astro-ph)

[112] arXiv:astro-ph/0012112 [pdf, other]

Title: The inverse cascade in turbulent dynamos

Axel Brandenburg

Comments: 8 pages, 4 figs, to be published in "Dynamo and dynamics, a mathematical challenge", Ed: P. Chossat, Nato ASI Series

Journal-ref: Nato ASI Series, Vol. 26, pp. 125-132

Subjects: Astrophysics (astro-ph)

[113] arXiv:astro-ph/0012113 [pdf, other]

Title: Direct N-body Modelling of Stellar Populations: Blue Stragglers in M67

Jarrod R. Hurley, Christopher A. Tout, Sverre J. Aarseth, Onno R. Pols

Comments: 26 pages, 18 figures, accepted for publication in MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc. 323 (2001) 630

Subjects: Astrophysics (astro-ph)

[114] arXiv:astro-ph/0012114 [pdf, other]

Title: Eccentric Nuclear Disks with Self Gravity: Predictions for the Double Nucleus of M31

R. M. Salow, T. S. Statler (Ohio Univ.)

Comments: 7 pp., incl. 3 eps figs. AASTeX 5.0 Accepted by ApJ Letters Replacement is 10% shorter in length, and addresses Referee concerns. Primary arguments remain unchanged

Subjects: Astrophysics (astro-ph)

[115] arXiv:astro-ph/0012115 [pdf, other]

Title: A Search for CO in the Local Group Dwarf Irregular Galaxy WLM

C.L. Taylor (1, 2), U. Klein (3) ((1) Five College Radio Astronomy Observatory, (2) Ruhr-Universitaet Bochum, (3) Radioastronomisches Institut der Uni. Bonn)

Comments: 11 pages, 3 figures, accepted by A&A

Subjects: Astrophysics (astro-ph)

[116] arXiv:astro-ph/0012116 [pdf, other]

Title: Gas motions in the plane of the spiral galaxy NGC 3631

A.M.Fridman (1,2), O.V.Khoruzhii (1,3), E.V.Polyachenko (1), A.V.Zasov (2), O.K.Sil'chenko (2), A.V.Moiseev (2), A.N.Burlak (1,2), V.L.Afanasiev (4), S.N.Dodonov (4), J.H.Knapen (5,6) ((1) Institute of Astronomy of the Russian Academy of Science, (2) Sternberg Astronomical Institute, (3) Troitsk Institute for Innovation and Thermonuclear Researches, (4) Special Astrophysical Observatory, (5) Isaac Newton Group of Telescopes, (6) University of Hertfordshire)

Comments: 14 pages, latex, uses this http URL, includes 15 figures. MNRAS, in press

Journal-ref: Mon.Not.Roy.Astron.Soc. 323 (2001) 651

Subjects: Astrophysics (astro-ph)

[117] arXiv:astro-ph/0012117 [pdf, other]

Title: The Effect of Formation Redshifts on the Cluster Mass-Temperature Relation

Benjamin F. Mathiesen

Comments: 6 pages, 3 postscript figures, submitted to MNRAS Letters

Journal-ref: Mon.Not.Roy.Astron.Soc. 326 (2001) L1

Subjects: Astrophysics (astro-ph)

[118] arXiv:astro-ph/0012118 [pdf, other]

Title: Precession of Magnetically Driven Warped Disks and Low-Frequency QPOs in Low-Mass X-Ray Binaries

Akiko Shirakawa, Dong Lai (Cornell)

Comments: 18 pages with 6 figures. Extended to include more details of calculations. To Appear in ApJ

Subjects: Astrophysics (astro-ph)

[119] arXiv:astro-ph/0012119 [pdf, other]

Title: The Stanford Cluster Search for Distant Galaxy Clusters

Jeffrey A. Willick (deceased), Keith L. Thompson, Benjamin F. Mathiesen, Saul Perlmutter, Robert A. Knop, Gary J. Hill

Comments: 36 pages, 5 b&w and 3 color postscript figures, aastex style. Submitted to PASP 12/00

Subjects: Astrophysics (astro-ph)

[120] arXiv:astro-ph/0012120 [pdf, other]

Title: How to measure CMB polarization power spectra without losing information

Max Tegmark, Angelica de Oliveira-Costa

Comments: Revised to match published PRD version. Expanded with easy-to-code-up equations for TB and EB cross-correlation cases as well. 17 PRD pages, 13 figs. Links etc at this http URL or from max@physics.this http URL

Journal-ref: Phys.Rev.D64:063001,2001

Subjects: Astrophysics (astro-ph)

[121] arXiv:astro-ph/0012121 [pdf, other]

Title: The Starburst-AGN Connection

Sylvain Veilleux (University of Maryland)

Comments: 7 pages; to appear in the proceedings of the Ringberg meeting "Starbursts - Near and Far", September 2000

Subjects: Astrophysics (astro-ph)

[122] arXiv:astro-ph/0012122 [pdf, other]

Title: Neutrino Emission from Neutron Stars

D. G. Yakovlev, A. D. Kaminker, O. Y. Gnedin, P. Haensel

Comments: review, 165 pages, Physics Reports, 2001 in press

Journal-ref: Phys.Rept.354:1,2001

Subjects: Astrophysics (astro-ph); Nuclear Theory (nucl-th)

[123] arXiv:astro-ph/0012123 [pdf, other]

Title: Jet directions in Seyfert galaxies: Radio continuum imaging data

H.R. Schmitt, J.S. Ulvestad, R.R.J. Antonucci, A.L. Kinney

Comments: To appear in The Astrophysical Journal Supplement Series, February 2001, 14 pages, 1 figure (6 pages), 2 tables

Journal-ref: Astrophys.J.Suppl. 132 (2001) 199-210

Subjects: Astrophysics (astro-ph)

[124] arXiv:astro-ph/0012124 [pdf, other]

Title: Blazars in Low-Luminosity and Radio-Weak AGN?

Heino Falcke (MPIfR Bonn), Sera Markoff (MPIfR Bonn), Peter L. Biermann (MPIfR Bonn)

Comments: 13 pages, 4 figure, Latex, this http URL, ito be published in "Blazar Demographics and Physics", ASP Conf. Ser., Eds. P. Padovani & M. Urry, also available at this http URL

Subjects: Astrophysics (astro-ph)

[125] arXiv:astro-ph/0012125 [pdf, other]

Title: Spectra and power of blazar jets

G. Ghisellini (Osserv. Astr. di Brera, Merate, Italy)

Comments: 12 pages, 7 figures, Invited talk at "X-ray Astronomy 2000" meeting, Palermo, Italy, Sept. 2000. Proceedings to be published in ASP Conference series, eds. R. Giacconi, L. Stella, & S. Serio, 2000

Subjects: Astrophysics (astro-ph)

[126] arXiv:astro-ph/0012126 [pdf, other]

Title: The Nuclei of Nearby Radio-Loud Ellipticals

G.A. Verdoes Kleijn (1), P.T. de Zeeuw (1), S.A. Baum (2), C.P. O'Dea (2), R.P. van der Marel (2), C. Xu (2), C.M. Carollo (3), J. Noel-Storr (3) ((1) Leiden Observatory, (2) STScI, and (3) Columbia University)

Comments: 4 pages. Contributed talk at IAU Symposium 205: Galaxies and their Constituents at the Highest Angular Resolutions, Manchester UK, August 2000. Proceedings to be published by ASP, edited by R. Schilizzi, S. Vogel, F. Paresce, M. Elvis

Subjects: Astrophysics (astro-ph)

[127] arXiv:astro-ph/0012127 [pdf, other]

Title: A multi-frequency study of the radio galaxy NGC326

M. Murgia, P. Parma, R. Fanti, H.R. de Ruiter, R.D. Ekers, E.B. Fomalont

Comments: 4 pages, 3 figures, uses this http URL (included). To appear in R.A. Laing and K.M. Blundell (Eds.) 'Particles and Fields in Radio Galaxies' Oxford, UK, 2000, to be published by the Astronomical Society of the Pacific (ASP)

Subjects: Astrophysics (astro-ph)

[128] arXiv:astro-ph/0012128 [pdf, other]

Title: Potential Sources of Gravitational Wave Emission and Laser Beam Interferometers

J.A.de Freitas Pacheco

Comments: Paper presented at the 6$^{th}$ International Workshop on Relativistic Aspects of Nuclear Physics - Tabatinga - Brazil - October 2000

Subjects: Astrophysics (astro-ph)

[129] arXiv:astro-ph/0012129 [pdf, other]

Title: Chandra Grating Spectroscopy of the Seyfert Galaxy Ton S180

T.J. Turner, I.M. George, T.Yaqoob, G. Kriss, D.M. Crenshaw, S. Kraemer, W. Zheng, J. Wang, K. Nandra

Comments: 12 pages, 2 figures. LaTeX with postscript figures. Accepted for publication in the Astrophysical Journal Letters

Subjects: Astrophysics (astro-ph)

[130] arXiv:astro-ph/0012130 [pdf, other]

Title: Mapping the Dynamics of the Quasar 3C 48

Eleni T. Chatzichristou (NASA/GSFC)

Comments: 4 pages, 2 figures, to appear in the Proc. of the IAU Symp.205 "Galaxies and their constituents at the highest angular resolutions"

Subjects: Astrophysics (astro-ph)

[131] arXiv:astro-ph/0012131 [pdf, other]

Title: A radio and optical study of Molonglo radio sources

C.H. Ishwara-Chandra (NCRA, Rri), D.J. Saikia (NCRA), P.J. McCarthy (OCIW)W.J.M. van Breugel (IIGP)

Comments: 11 pages, accepted for publication in MNRAS. Complete set of radio images can be obtained from ishwar@rri.this http URL

Journal-ref: Mon.Not.Roy.Astron.Soc. 323 (2001) 460

Subjects: Astrophysics (astro-ph)

[132] arXiv:astro-ph/0012132 [pdf, other]

Title: Theoretical predictions for the cold part of the colliding wind interaction zone

D. Folini, R. Walder

Comments: 6 pages, 2 figures, to appear in PASP conference series, proceedings of the workshop 'Interacting Winds from Massive Stars'

Subjects: Astrophysics (astro-ph)

[133] arXiv:astro-ph/0012133 [pdf, other]

Title: Theoretical considerations on colliding clumped winds

R. Walder, D. Folini

Comments: 8 pages, 2 figures, to appear in PASP conference series, proceedings of the workshop 'Interacting Winds from Massive Stars'

Subjects: Astrophysics (astro-ph)

[134] arXiv:astro-ph/0012134 [pdf, other]

Title: Systematic Errors in the Estimation of Black Hole Masses by Reverberation Mapping

Julian H. Krolik (Johns Hopkins University)

Comments: 19 pages, 4 figures, AASLaTeX, accepted by ApJ

Subjects: Astrophysics (astro-ph)

[135] arXiv:astro-ph/0012135 [pdf, other]

Title: Helium contamination from the progenitor stars of planetary nebulae: The He/H radial gradient and the Delta Y/Delta Z enrichment ratio

W. J. Maciel

Comments: 16 pages, 3 postscript (EPS) figures, TEX, uses this http URL, to be published in Astrophysics and Space Science, also available at this http URL

Journal-ref: Astrophys.Space Sci. 277 (2001) 545-563

Subjects: Astrophysics (astro-ph)

[136] arXiv:astro-ph/0012136 [pdf, other]

Title: Evolution of a Neutron Star From its Birth to Old Age

M. Prakash, J.M. Lattimer, J.A. Pons, A.W. Steiner, S. Reddy

Comments: To appear in the proceedings of the ECT* Workshop on the Physics of Neutron Star Interiors, Trento, Italy, June 2000; 61 pages, 22 figures

Journal-ref: Lect.Notes Phys. 578 (2001) 364-423

Subjects: Astrophysics (astro-ph); Nuclear Theory (nucl-th)

[137] arXiv:astro-ph/0012137 [pdf, other]

Title: Dynamical variations of the differential rotation in the solar convection zone

Eurico Covas, Reza Tavakol, David Moss

Comments: 14 pages, 30 figures, submitted to Astronomy and Astrophysics, also available at this http URL

Subjects: Astrophysics (astro-ph)

[138] arXiv:astro-ph/0012138 [pdf, other]

Title: Chemical equilibrium and stable stratification of a multi-component fluid: thermodynamics and application to neutron stars

Andreas Reisenegger (Pontificia Universidad Catolica de Chile & ITP Santa Barbara)

Comments: AASTeX, 8 pages, including 1 PS figure. Accepted for publication in The Astrophysical Journal

Journal-ref: Astrophys.J. 550 (2001) 860-862

Subjects: Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc); Atmospheric and Oceanic Physics (physics.ao-ph); Fluid Dynamics (physics.flu-dyn)

[139] arXiv:astro-ph/0012139 [pdf, other]

Title: Quintessence and the Separation of CMB Peaks

Michael Doran, Matthew Lilley, Jan Schwindt, Christof Wetterich

Comments: Replaced with version to appear in Astrophysical Journal

Journal-ref: Astrophys.J. 559 (2001) 501-506

Subjects: Astrophysics (astro-ph); High Energy Physics - Phenomenology (hep-ph)

[140] arXiv:astro-ph/0012140 [pdf, other]

Title: A Search for the Damped Ly-alpha Absorber at z=1.86 toward QSO 1244+3443 with NICMOS

Varsha P. Kulkarni (1 and 2), John M. Hill (1), Glenn Schneider (1), Ray J. Weymann (3), Lisa J. Storrie-Lombardi (3 and 4), Marcia J. Rieke (1), Rodger I. Thompson (1), Buell T. Jannuzzi (5) ((1) Univ. of Arizona, Steward Observatory, (2) Univ. of South Carolina, Dept. of Physics and Astronomy, (3) Carnegie Observatories, (4) SIRTF Science Center, Caltech, (5) National Optical Astronomy Observatories)

Comments: 28 pages, 9 figures. Accepted for publication in The Astrophysical Journal. Figures are given at a slightly lower resolution here, to decrease file sizes. The higher resolution versions can be found in the ApJ

Subjects: Astrophysics (astro-ph)

[141] arXiv:astro-ph/0012141 [pdf, other]

Title: Constraining Isocurvature Perturbations with CMB Polarization

M Bucher, K Moodley, N Turok (DAMTP, U. of Cambridge)

Comments: 4pages, Latex with four eps figures. (Revised 18 Dec 2000. Minor typos corrected)

Journal-ref: Phys.Rev.Lett. 87 (2001) 191301

Subjects: Astrophysics (astro-ph)

[142] arXiv:astro-ph/0012142 [pdf, other]

Title: Ultraviolet and Optical Observations of OB Associations and Field Stars in the Southwest Region of the Large Magellanic Cloud

Joel Wm. Parker, Dennis Zaritsky, Theodore P. Stecher, Jason Harris, Phil Massey

Comments: 16 pages, 10 figures (19 PostScript files), tabular data + header file for Table 1 (2 ASCII files). File format is LaTeX/AASTeX v.502 using the emulateapj5 preprint style (included). Also available at this http URL . To appear in the February 2001 issue of the Astronomical Journal

Subjects: Astrophysics (astro-ph)

[143] arXiv:astro-ph/0012143 [pdf, other]

Title: Difference Image Analysis of the OGLE-II Bulge Data. I. The Method

P.R. Wozniak (Princeton University Observatory)

Comments: submitted to Acta Astronomica, latex, aaspp4, 35 pages (including 9 figures), minor changes

Subjects: Astrophysics (astro-ph)

[144] arXiv:astro-ph/0012144 [pdf, other]

Title: Optical Gravitational Lensing Experiment. OGLE 2000-BUL-43: A Spectacular Ongoing Parallax Microlensing Event. Difference Image Analysis

I. Soszynski, K. Zebrun, P.R. Wozniak, S. Mao, A. Udalski, M. Szymanski, M. Kubiak, G. Pietrzynski, O. Szewczyk, L. Wyrzykowski

Comments: 14 pages (including 7 ps figures and 1 table). Additional data as plain text file needed to be downloaded in the source to view. LaTex, emulateapj

Journal-ref: Astrophys.J. 552 (2001) 731-737

Subjects: Astrophysics (astro-ph)

[145] arXiv:astro-ph/0012145 [pdf, other]

Title: Observations of YSO Circumstellar Discs

D. Ward-Thompson, P. Andre, O. P. Lay

Comments: 3 pages. To appear in:IAU Symp 202, eds. Penny, Artymowicz, Lagrange, Russell, `Planetary Systems in the Universe'

Subjects: Astrophysics (astro-ph)

[146] arXiv:astro-ph/0012146 [pdf, other]

Title: First Results from the SPICES Survey

Daniel Stern (1), Andrew Connolly (2), Peter Eisenhardt (1), Richard Elston (3), Brad Holden (4), Piero Rosati (5), S.A.Stanford (4), Hyron Spinrad (6), Paolo Tozzi (7), K.L. Wu (3) ((1) JPL/Caltech, (2) Univ. of Pittsburgh, (3) Univ. of Florida, (4) UC-Davis and IGPP/LLNL, (5) ESO, (6) UC-Berkeley, (7) Trieste)

Comments: 5 pages, 2 figures; to appear in the proceedings of the ESO/ECF workshop on "Deep Fields", 9-12 Oktober 2000, Garching

Subjects: Astrophysics (astro-ph)

[147] arXiv:astro-ph/0012147 [pdf, other]

Title: On Ultrasmall Silicate Grains in the Diffuse Interstellar Medium

Aigen Li, B.T. Draine (Princeton University)

Comments: Submitted to ApJ Letters, 11 pages, 4 figures, Latex

Subjects: Astrophysics (astro-ph)

[148] arXiv:astro-ph/0012148 [pdf, other]

Title: Magnetic field effects on the thermonuclear combustion front of Chandrasekhar mass white dwarfs

Cristian R. Ghezzi, Elisabete M. de Gouveia Dal Pino, Jorge E. Horvath

Comments: 17 pages, 1 figure, accepted by ApJ Letters

Journal-ref: Astrophys.J. 548 (2001) L193-L196

Subjects: Astrophysics (astro-ph); Computational Physics (physics.comp-ph); Plasma Physics (physics.plasm-ph); Quantum Physics (quant-ph)

[149] arXiv:astro-ph/0012149 [pdf, other]

Title: Global Constraints On Key Cosmological Parameters

G. Steigman, T. P. Walker, A. Zentner (The Ohio State University)

Comments: 19 pages, 6 figures

Subjects: Astrophysics (astro-ph)

[150] arXiv:astro-ph/0012150 [pdf, other]

Title: Deep HST Imaging of IC 1613. I. Variable Stars and Distance

Andrew E. Dolphin, A. Saha, Evan D. Skillman, Eline Tolstoy, A. A. Cole, R. C. Dohm-Palmer, J. S. Gallagher, Mario Mateo, J. G. Hoessel

Comments: To appear in March ApJ 36 pages, 10 figures

Journal-ref: Astrophys.J. 550 (2001) 554-569

Subjects: Astrophysics (astro-ph)