Astrophysics

Authors and titles for April 2005

[101] arXiv:astro-ph/0504101 [pdf, other]

Title: X-Ray Spectra of the Narrow-Line Seyfert 1 Galaxy Ton S180 in Comparison with Galactic Black Holes

Mio Murashima (1), Aya Kubota (2), Kazuo Makishima (1 and 2), Motohide Kokubun (1), Soojing Hong (2 and 3), Hitoshi Negoro (4), ((1) University of Tokyo, (2) RIKEN, (3) Saitama University, (4) Nihon University)

Comments: 7 pages, 7 figures

Journal-ref: PASJ vol. 57 (2005)

Subjects: Astrophysics (astro-ph)

[102] arXiv:astro-ph/0504102 [pdf, other]

Title: C,N,O in lambda Boo stars and in composite spectra

R. Faraggiana (1), P. Bonifacio (2) ((1) Dipartimento di Astronomia, Universita' degli Studi di Trieste, (2) Istituto Nazionale di Astrofisica - Osservatorio Astronomico di Trieste)

Comments: Accepted for publication on A&A

Subjects: Astrophysics (astro-ph)

[103] arXiv:astro-ph/0504103 [pdf, other]

Title: ELT Observations of Supernovae at the Edge of the Universe

M. Della Valle (1), R.Gilmozzi (2), N.Panagia (3), J.Bergeron (4), P.Madau (5)J.Spyromilio (2), P.Dierickx (6) ((1)INAF-Arcetri Astrophysical Observatory, Largo E. Fermi, 5, Firenze, (2)European Southern Observatory, Santiago, Chile, (3) ESA/Space Telescope Science Institute, Baltimore, (4)Institut d'Astrophysique de Paris - CNRS, Paris, (5)Department of Astronomy and Astrophysics, University of California, Santa Cruz, (6)European Southern Observatory, Garching, Munchen)

Comments: 9 pages, 6 figures. To appear in "Exploring the Cosmic Frontier: Astrophysical Instruments for the 21st Century", proceedings of the conference held in Berlin, 18-21 May 2004

Subjects: Astrophysics (astro-ph)

[104] arXiv:astro-ph/0504104 [pdf, other]

Title: Doppler imaging of Speedy Mic using the VLT, Fast spot evolution on a young K-dwarf star

U. Wolter, J. H. M. M. Schmitt, F. van Wyk

Subjects: Astrophysics (astro-ph)

[105] arXiv:astro-ph/0504105 [pdf, other]

Title: Towards a physical model of dust tori in Active Galactic Nuclei - Radiative transfer calculations for a hydrostatic torus model

Marc Schartmann (1), Klaus Meisenheimer (1), Max Camenzind (2), Sebastian Wolf (1), Thomas Henning (1) ((1) Max-Planck-Institut fuer Astronomie, Heidelberg, Germany, (2) Landessternwarte Heidelberg, Germany)

Comments: 23 pages, 22 figures, accepted by A&A, figure 2 corrected

Subjects: Astrophysics (astro-ph)

[106] arXiv:astro-ph/0504106 [pdf, other]

Title: Fe XI emission lines in a high resolution extreme ultraviolet spectrum obtained by SERTS

F. P. Keenan, K. M. Aggarwal, R. S. I. Ryans, R. O. Milligan, D. S. Bloomfield, J. W. Brosius, J. M. Davila, R. J. Thomas

Comments: 21 pages, 9 gigures, accepted for publication in the Astrophysical Journal

Journal-ref: Astrophys.J. 624 (2005) 428-435

Subjects: Astrophysics (astro-ph)

[107] arXiv:astro-ph/0504107 [pdf, other]

Title: Localizing Plages on BO Mic, First steps towards chromospheric Doppler imaging

U. Wolter, J. H. M. M. Schmitt

Subjects: Astrophysics (astro-ph)

[108] arXiv:astro-ph/0504108 [pdf, other]

Title: The Devil is in the Details: Compact Structures in Pulsar Wind Nebulae

Patrick Slane

Comments: 13 pages, 4 embedded EPS figures. Advances in Space Research, in press

Subjects: Astrophysics (astro-ph)

[109] arXiv:astro-ph/0504109 [pdf, other]

Title: Structure in the motions of the fastest halo stars

P. ReFiorentin, A. Helmi, M. G. Lattanzi, A. Spagna

Comments: 9 pages, 6 figures, accepted for publication in A&A

Subjects: Astrophysics (astro-ph)

[110] arXiv:astro-ph/0504110 [pdf, other]

Title: Chandra Observation of an X-ray Flare at Saturn: Evidence for Direct Solar Control on Saturn's Disk X-ray Emissions

Anil Bhardwaj, Ronald F. Elsner, J. Hunter Waite Jr, G. Randall Gladstone, Thomas E. Cravens, Peter G. Ford

Comments: Total 12 pages including 4 figures

Journal-ref: Astrophys.J. 624 (2005) L121-L124

Subjects: Astrophysics (astro-ph)

[111] arXiv:astro-ph/0504111 [pdf, other]

Title: Enhanced X-ray variability from V1647 Ori, the young star in outburst illuminating McNeil's Nebula

N. Grosso (1), J.H. Kastner (2), H. Ozawa (1), M. Richmond (2), T. Simon (3), D.A. Weintraub (4), K. Hamaguchi (5,6), A. Frank (7) ((1) Laboratoire d'Astrophysique de Grenoble, (2) Rochester Institute of Technology, (3) Institute for Astronomy, (4) Vanderbilt University, (5) NASA/Goddard Space Flight Center, (6) National Research Council, (7) University of Rochester)

Comments: 11 pages and 8 Figures. Accepted for publication by Astronomy & Astrophysics

Subjects: Astrophysics (astro-ph)

[112] arXiv:astro-ph/0504112 [pdf, other]

Title: The Small-Scale Power Spectrum of Cold Dark Matter

Abraham Loeb, Matias Zaldarriaga (Harvard University)

Comments: Physical Review D, in press

Journal-ref: Phys.Rev. D71 (2005) 103520

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

[113] arXiv:astro-ph/0504113 [pdf, other]

Title: Comment on Hervik's comment (astro-ph/0504071) on evidence of vorticity and shear of the Universe (astro-ph/0503213)

Davor Palle (Rugjer Boskovic Institute, Zagreb, Croatia)

Comments: 2 pages

Subjects: Astrophysics (astro-ph)

[114] arXiv:astro-ph/0504114 [pdf, other]

Title: SN 1998A: Explosion of a Blue Supergiant

A. Pastorello, E. Baron, D. Branch, L. Zampieri, M. Turatto, M. Ramina, S. Benetti, E. Cappellaro, M. Salvo, F. Patat, A. Piemonte, J. Sollerman, B. Leibundgut, G. Altavilla

Comments: 15 pages, 16 figures, accepted for publication in MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc. 360 (2005) 935-949

Subjects: Astrophysics (astro-ph)

[115] arXiv:astro-ph/0504115 [pdf, other]

Title: Constraining dark energy with cross-correlated CMB and Large Scale Structure data

P.S. Corasaniti (ISCAP, New York), T. Giannantonio (Rome U.), A. Melchiorri (Rome U. & INFN, Rome)

Comments: 7 pages, 7 figures, extended discussion on baryon density and covariance matrix, matches PRD accepted version

Journal-ref: Phys.Rev. D71 (2005) 123521

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

[116] arXiv:astro-ph/0504116 [pdf, other]

Title: Spectroscopic and Photometric Observations of SN IIn 1995N

A. Pastorello, I. Aretxaga, L. Zampieri, P. Mucciarelli, S. Benetti

Comments: 5 pages, 3 figures. To appear in proceedings of the International Conference "1604-2004: Supernovae as Cosmological Lighthouses" (Padova, Italy, June 16-19, 2004), eds. M. Turatto, W. Shea, S. Benetti and L. Zampieri, ASP conference Series

Subjects: Astrophysics (astro-ph)

[117] arXiv:astro-ph/0504117 [pdf, other]

Title: VLA observations of broad 6-cm excited state OH lines in W49A

Patrick Palmer, W. M. Goss

Comments: 17 pages including 10 figures. MNRAS style file needed to process

Journal-ref: Mon.Not.Roy.Astron.Soc.360:974-992,2005

Subjects: Astrophysics (astro-ph)

[118] arXiv:astro-ph/0504118 [pdf, other]

Title: Mid-Infrared Imaging of Active Galaxies: Active Nuclei and Embedded Star Clusters

E. Galliano, D. Alloin, E. Pantin, P.O. Lagage, O. Marco

Comments: 19 pages, 11 figures, accepted for publication in A&A

Subjects: Astrophysics (astro-ph)

[119] arXiv:astro-ph/0504119 [pdf, other]

Title: Variability of Optical \ion{Fe}{ii} Complex in Narrow-Line Seyfert 1 Galaxy NGC 4051

J. Wang, J. Y. Wei, X. T. He

Comments: 27 pages, 9 figures, accepted by A&A

Subjects: Astrophysics (astro-ph)

[120] arXiv:astro-ph/0504120 [pdf, other]

Title: Discovery of extended VHE gamma-ray emission from the asymmetric pulsar wind nebula in MSH 15-52 with H.E.S.S

H.E.S.S. Collaboration: F. Aharonian, et al

Comments: 5 pages, 3 figures, accepted by A&A letters

Subjects: Astrophysics (astro-ph)

[121] arXiv:astro-ph/0504121 [pdf, other]

Title: Relic abundance of mass-varying cold dark matter particles

R. Rosenfeld (IFT-Unesp)

Comments: 5 pages, no figures. Version published in PLB

Journal-ref: Phys.Lett. B624 (2005) 158-161

Subjects: Astrophysics (astro-ph); High Energy Physics - Phenomenology (hep-ph); Nuclear Experiment (nucl-ex)

[122] arXiv:astro-ph/0504122 [pdf, other]

Title: The Dog on the Ship: The "Canis Major Dwarf Galaxy" as an Outlying Part of the Argo Star System

Helio J. Rocha-Pinto (1,2), Steven R. Majewski (2), Michael F. Skrutskie (2), Richard J. Patterson (2), H. Nakanishi (3), R. R. Munoz (2), Y. Sofue ((1) Observatorio do Valongo, UFRJ, Rio de Janeiro, RJ, Brazil, (2) Department of Astronomy, University of Virginia, Charlottesville, VA, (3) Nobeyama Radio Observatory, Nagano, Japan, (4) Institute of Astronomy, The University of Tokyo, Japan)

Comments: 4 pages, 4 figures

Journal-ref: Astrophys.J. 640 (2006) L147-L150

Subjects: Astrophysics (astro-ph)

[123] arXiv:astro-ph/0504123 [pdf, other]

Title: On the Size Distribution of Close-In Extrasolar Giant Planets

B. Scott Gaudi (CfA)

Comments: 5 pages, 2 figures. Accepted to ApJL. Updated relative to final ApJL version to include revised radius of OGLE-TR-10 from Holman et al., http://arxiv.org/abs/astro-ph/0506569

Journal-ref: Astrophys.J. 628 (2005) L73-L76

Subjects: Astrophysics (astro-ph)

[124] arXiv:astro-ph/0504124 [pdf, other]

Title: Tracing the Nature of Dark Energy with Galaxy Distribution

P.Solevi (Milano-Bicocca), R.Mainini (Milano-Bicocca), S.A.Bonometto (Milano-Bicocca), A.V.Maccio' (Zurich Univ.), A.Klypin (NMSU), S.Gottloeber (Potsdam)

Comments: 12 pages, 11 figures, dependence on mass-luminosity relation discussed, minor changes to match the accepted version by MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc. 366 (2006) 1346-1356

Subjects: Astrophysics (astro-ph)

[125] arXiv:astro-ph/0504125 [pdf, other]

Title: The Difference Between the Amati and Ghirlanda Relations

Amir Levinson, David Eichler

Comments: accepted by ApJ Letters, post refereed version, an appendix has been added

Journal-ref: Astrophys.J. 629 (2005) L13

Subjects: Astrophysics (astro-ph)

[126] arXiv:astro-ph/0504126 [pdf, other]

Title: X-ray States of Black Hole Binaries in Outburst

R. A. Remillard

Comments: 10 pages, 4 figures, in "Interacting Binaries: Accretion, Evolution and Outcomes", eds. L. A. Antonelli, et al., Procs. Interacting Binaries Meeting, Cefalu, Italy, June 2004, in press (AIP)

Subjects: Astrophysics (astro-ph)

[127] arXiv:astro-ph/0504127 [pdf, other]

Title: Evolution of field early-type galaxies: The view from GOODS/CDFS

I. Ferreras (1), T. Lisker (1), C. M. Carollo (1), S. J. Lilly (1), B. Mobasher (2). ((1) ETH-Zurich, (2) STScI)

Comments: 14 pages, 16 figures. Uses emulateapj. Accepted for publication in ApJ. Some figures in low resolution

Journal-ref: Astrophys.J. 635 (2005) 243-259

Subjects: Astrophysics (astro-ph)

[128] arXiv:astro-ph/0504128 [pdf, other]

Title: Robust determination of optical path difference: fringe tracking at the IOTA interferometer

Ettore Pedretti, Wesley A. Traub, John D. Monnier, Rafael Millan-Gabet, Nathaniel P. Carleton, F. Peter Schloerb, Michael K. Brewer, Jean-Philippe Berger, Marc G. Lacasse, Sam Ragland

Comments: 15 pages, 4 figures

Subjects: Astrophysics (astro-ph)

[129] arXiv:astro-ph/0504129 [pdf, other]

Title: X-ray States of Black-Hole Binaries and Implications for the Mechanism of Steady Jets

R. A. Remillard

Comments: 10 pages, 8 figures, Procs., Texas@Stanford 2004, ed., P. Chen, SLAC Electronic Conference Proceedings Archive, 2005, in prep

Subjects: Astrophysics (astro-ph)

[130] arXiv:astro-ph/0504130 [pdf, other]

Title: A Possible Late Time $\Lambda$CDM-like Background Cosmology in Relativistic MOND Theory

J. G. Hao, R. Akhoury

Comments: Major revisions made; Matching the version to be published in IJMPD

Journal-ref: Int. J. Mod. Phys. D18:1039,2009

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

[131] arXiv:astro-ph/0504131 [pdf, other]

Title: The [Fe IV] Discrepancy: Constraining the Iron Abundances in Nebulae

Monica Rodriguez, Robert H. Rubin

Comments: 23 pages, 7 figures, accepted for publication in ApJ, Figure 5 corrected

Journal-ref: Astrophys.J. 626 (2005) 900-908

Subjects: Astrophysics (astro-ph)

[132] arXiv:astro-ph/0504132 [pdf, other]

Title: The Amplitude of Dark Energy Perturbations

Christopher Gordon (Chicago), David Wands (Portsmouth)

Comments: Added references and an acknowledgment. Accepted for publication in PRD

Journal-ref: Phys.Rev.D71:123505,2005

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

[133] arXiv:astro-ph/0504133 [pdf, other]

Title: On the nature of Lithium-rich giant stars: constraints from Beryllium abundances

C. H. F. Melo, P. de Laverny, N. C. Santos, G. Israelian, S. Randich, J. D. do Nascimento Jr., J. R. De Medeiros

Comments: Accepted in A&A

Subjects: Astrophysics (astro-ph)

[134] arXiv:astro-ph/0504134 [pdf, other]

Title: Proper Motions of the BN Object and the I Radio Source in Orion: Where and When Did BN Become a Runaway Star?

Luis F. Rodriguez, Arcadio Poveda, Susana Lizano, Christine Allen

Comments: 13 pages, 3 figures

Journal-ref: Astrophys.J. 627 (2005) L65-L68

Subjects: Astrophysics (astro-ph)

[135] arXiv:astro-ph/0504135 [pdf, other]

Title: Consequences of Disk Scale Height on LISA Confusion Noise from Close White Dwarf Binaries

M. Benacquista, K. Holley-Bockelmann

Comments: 28 pages, 7 figures, accepted by Astrophysical Journal, substantial revisions in response to referee, conclusions slightly revised

Journal-ref: Astrophys.J. 645 (2006) 589-596

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

[136] arXiv:astro-ph/0504136 [pdf, other]

Title: A high sensitivity HI survey of the sky at delta < -25 deg Final data release

E. Bajaja (1), E.M. Arnal (1 and 2), J.J. Larrarte (1), R. Morras (1 and 2), W.G.L. Poppel (1), P.M.W. Kalberla (3) ((1) Instituto Argentino de Radioastronomia, (2) Facultad de Ciencias Astronomicas y Geofisicas, UNLP, (3) Radioastronomisches Institut, University of Bonn)

Comments: 10 pages, 10 figures, accepted for publication by Astronomy & Astrophysics

Subjects: Astrophysics (astro-ph)

[137] arXiv:astro-ph/0504137 [pdf, other]

Title: The broad-band X-ray spectrum of the blazar PKS B1830-211 by Chandra and INTEGRAL

A. De Rosa, L. Piro, A. Tramacere, E. Massaro, R. Walter, L. Bassani, A. Malizia, A.J. Bird, A.J. Dean

Comments: Accepted for publication in A&A

Subjects: Astrophysics (astro-ph)

[138] arXiv:astro-ph/0504138 [pdf, other]

Title: X-ray synchrotron emission from the oblique shock in the jet of the powerful radio galaxy 3C 346

D.M. Worrall, M. Birkinshaw (Dept. of Physics, University of Bristol)

Comments: Accepted for publication in the MNRAS. 9 pages

Journal-ref: Mon.Not.Roy.Astron.Soc. 360 (2005) 921-925

Subjects: Astrophysics (astro-ph)

[139] arXiv:astro-ph/0504139 [pdf, other]

Title: Restframe I-band Hubble diagram for type Ia supernovae up to redshift z ~0.5

The Supernova Cosmology Project: S. Nobili, R. Amanullah, G. Garavini, A. Goobar, C. Lidman, V. Stanishev, G. Aldering, P. Antilogus, P. Astier, M. S. Burns, A. Conley, S.E. Deustua, R. Ellis, S. Fabbro, V. Fadeyev, G. Folatelli, R. Gibbons, G. Goldhaber, D.E. Groom, I. Hook, D.A. Howell, A.G. Kim, R.A. Knop, P.E. Nugent, R. Pain, S. Perlmutter, R. Quimby, J. Raux, N. Regnault, P. Ruiz-Lapuente, G. Sainton, K. Schahmaneche, E. Smith, A.L. Spadafora, R.C. Thomas, L. Wang

Comments: Accepted for publication in A&A (01/04/2005)

Subjects: Astrophysics (astro-ph)

[140] arXiv:astro-ph/0504140 [pdf, other]

Title: The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections

P.M.W. Kalberla (1), W.B. Burton (2 and 3), Dap Hartmann (2 and 4), E.M. Arnal (5 and 6), E. Bajaja (5), R. Morras (5 and 6), W.G.L. Poppel (5) ((1) Radioastronomisches Institut, University of Bonn, (2) Sterrewacht Leiden, (3) NRAO, (4) Delft University of Technology, (5) Instituto Argentino de Radioastronomia, (6) Facultad de Ciencias Astronomicas y Geofisicas, UNLP)

Comments: 9 pages, 5 figures, accepted for publication by Astronomy & Astrophysics

Journal-ref: Astron.Astrophys.440:775-782,2005

Subjects: Astrophysics (astro-ph)

[141] arXiv:astro-ph/0504141 [pdf, other]

Title: Efficient Monte Carlo methods for continuum radiative transfer

M. Juvela

Comments: submitted to A&A, 19 pages

Subjects: Astrophysics (astro-ph)

[142] arXiv:astro-ph/0504142 [pdf, other]

Title: The properties of Galactic globular cluster sub-systems

A. D. Mackey (1), Sidney van den Bergh (2) ((1) IoA Cambridge, (2) Dominion Astrophysical Observatory)

Comments: 16 pages, 7 figures. Accepted for publication in MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc. 360 (2005) 631-645

Subjects: Astrophysics (astro-ph)

[143] arXiv:astro-ph/0504143 [pdf, other]

Title: Advances of plasma diagnostics with high-resolution spectroscopy of stellar coronae

J.-U. Ness (Rudolf Peierls Centre for Theoretical Physics, University of Oxford)

Comments: 11 pages, 2 figures; Advances in Space Research, Proceedings for COSPAR meeting in Paris July 2004

Subjects: Astrophysics (astro-ph)

[144] arXiv:astro-ph/0504144 [pdf, other]

Title: Sidebands to the lower kilohertz QPO in 4U1636-53

P. G. Jonker, M. Mendez, M. van der Klis

Comments: 6 pages, 5 Figures, accepted for publication in MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc. 360 (2005) 915-920

Subjects: Astrophysics (astro-ph)

[145] arXiv:astro-ph/0504145 [pdf, other]

Title: X-ray properties of active M dwarfs as observed by XMM-Newton

J. Robrade, J.H.M.M. Schmitt (Hamburger Sternwarte, Universitaet Hamburg)

Comments: 13 pages, 11 figures, accepted by A&A

Subjects: Astrophysics (astro-ph)

[146] arXiv:astro-ph/0504146 [pdf, other]

Title: The value of density measurements in stellar coronae

Jan-Uwe Ness, Carole Jordan (Rudolf Peierls Centre for Theoretical Physics, University of Oxford)

Comments: 3 pages, 3 figures, proceedings ITAMP Workshop: X-ray Diagnostics for Astrophysical Plasmas: Theory, Experiment and Observation. 2004 November 15-17 Cambridge, USA

Subjects: Astrophysics (astro-ph)

[147] arXiv:astro-ph/0504147 [pdf, other]

Title: Nonthermal hard X-ray excess in the cluster Abell 2256 from two epoch observations

Roberto Fusco-Femiano (1), Raffaella Landi (2,3), Mauro Orlandini (2) ((1)INAF-IASF/Roma (Italy), (2)INAF-IASF/Bologna (Italy), (3)Dip. di Fisica, Univ. di Bologna (Italy))

Comments: 12 pages, 3 figures, 1 table - ApJL, in press

Journal-ref: Astrophys.J. 624 (2005) L69-L72

Subjects: Astrophysics (astro-ph)

[148] arXiv:astro-ph/0504148 [pdf, other]

Title: X-ray Variability of Active Galactic Nuclei and the Flare Model

R.W. Goosmann, B. Czerny, A.-M. Dumont, M. Mouchet, A. Rozanska, V. Karas, M. Dovciak

Comments: 8 pages, 7 figures, proceedings for a poster at the COSPAR meeting 2004 held in Paris, France; accepted by Advances in Space Research

Subjects: Astrophysics (astro-ph)

[149] arXiv:astro-ph/0504149 [pdf, other]

Title: Diffusion coefficient and acceleration spectrum from direct measurements of charged cosmic ray nuclei

A. Castellina (Istituto di Fisica dello Spazio Interplanetario, INAF, and INFN Torino), F. Donato (MPI, Munich; INFN and Univ., Torino)

Comments: 20 pages, 6 figs., Astropart. Physics, in press

Journal-ref: Astropart.Phys. 24 (2005) 146-159

Subjects: Astrophysics (astro-ph)

[150] arXiv:astro-ph/0504150 [pdf, other]

Title: Precision X-ray Timing of RX J0806.3+1527 with CHANDRA: Evidence for Gravitational Radiation from an Ultracompact Binary

Tod E. Strohmayer

Comments: 23 pages, 9 figures, AASTeX, accepted for publication in the Astrophysical Journal

Journal-ref: Astrophys.J. 627 (2005) 920-925

Subjects: Astrophysics (astro-ph)