Astrophysics

Authors and titles for October 2004

[401] arXiv:astro-ph/0410402 [pdf, other]

Title: Wide band X-ray Imager (WXI) and Soft Gamma-ray Detector (SGD) for the NeXT Mission

T. Takahashi, A. Awaki, T. Dotani, Y. Fukazawa, K. Hayashida, T. Kamae, J. Kataoka, N. Kawai, S. Kitamoto, T. Kohmura, M. Kokubun, K. Koyama, K. Makishima, H. Matsumoto, E. Miyata, T. Murakami, K. Nakazawa, M. Momachi, M. Ozaki, H. Tajima, M. Tashiro, T. Tamagawa, Y. Terada, H. Tsunemi, T. Tsuru, K. Yamaoka, D. Yonetoku, A. Yoshida

Comments: 12 pages, 13 figures, to be published in the SPIE proceedings 5488, typo corrected in sec.3

Subjects: Astrophysics (astro-ph)

[402] arXiv:astro-ph/0410403 [pdf, other]

Title: Hydrogen Burning on Magnetar Surfaces

P. Chang, P. Arras, L. Bildsten

Comments: 4 pages, 2 figures, To be published in ApJ Letters

Journal-ref: Astrophys.J.616:L147-L150,2004

Subjects: Astrophysics (astro-ph)

[403] arXiv:astro-ph/0410404 [pdf, other]

Title: SparsePak: A Formatted Fiber Field-Unit for The WIYN Telescope Bench Spectrograph. II. On-Sky Performance

Matthew A. Bershady (1), David R. Andersen (2), Marc A. W. Verheijen (3), Kyle B. Westfall (1), Steven M. Crawford (1), Rob A. Swaters (4) ((1) University of Wisconsin, (2) Herzberg Institute of Astrophysics, (3) Kapetyn Astronomical Institute, (4) University of Maryland)

Comments: To appear in ApJSupp (Feb 2005); 19 pages text; 7 tables; 27 figures (embedded); high-resolution version at this http URL

Subjects: Astrophysics (astro-ph)

[404] arXiv:astro-ph/0410405 [pdf, other]

Title: Physics of Outflows: the Binary Protostar L1551 IRS5 and its Jets

R. Liseau (1), C. V. M. Fridlund (2), B. Larsson (1) ((1) Stockholm Observatory, (2) ESA-ESTEC)

Comments: 25 pages, 7 Postscript figures (3 in colour). Accepted by the Astrophysical Journal (tentatively scheduled issue ApJ 1 February 2005)

Journal-ref: Astrophys.J. 619 (2005) 959-967

Subjects: Astrophysics (astro-ph)

[405] arXiv:astro-ph/0410406 [pdf, other]

Title: Extracting clean supernova spectra

S. Blondin (1), J. R. Walsh (2), B. Leibundgut (1), G. Sainton (3) ((1) ESO, (2) ESO/ST-ECF, (3) LPNHE)

Comments: 15 pages, 14 figures, accepted for publication in A&A

Journal-ref: Astron.Astrophys. 431 (2005) 757-771

Subjects: Astrophysics (astro-ph)

[406] arXiv:astro-ph/0410407 [pdf, other]

Title: Compact stars in the standard model - and beyond

F. Sandin

Comments: 16 pages, 6 figures, contribution to the 42nd course of the international school of subnuclear physics, 'How and where to go beyond the standard model', Erice, Aug. 29 - Sep. 7, 2004

Journal-ref: Eur.Phys.J.C40:15-22,2005

Subjects: Astrophysics (astro-ph)

[407] arXiv:astro-ph/0410408 [pdf, other]

Title: Combined constraints on Cardassian models from supernovae, CMB and large-scale structure observations

Morad Amarzguioui (1), Oystein Elgaroy (1), Tuomas Multamaki (2) ((1) Institute of theoretical astrophysics, University of Oslo, (2) NORDITA)

Comments: 15 pages, 11 figures, accepted for publication in JCAP. Minor changes to text and references

Journal-ref: JCAP 0501 (2005) 008

Subjects: Astrophysics (astro-ph)

[408] arXiv:astro-ph/0410409 [pdf, other]

Title: Uncertainties of Antiproton and Positron Spectra from B/C Data and mSUGRA Contributions for Clumpy Halos

A.M. Lionetto, A. Morselli, V. Zdravkovic

Comments: 8 pages, 11 figures, proceedings for the workshop on ``Science with the New Generation of High Energy Gamma-ray Experiments'', June 2004, Bari (Italy); added references

Subjects: Astrophysics (astro-ph)

[409] arXiv:astro-ph/0410410 [pdf, other]

Title: Dynamical triggering of starbursts

F. Combes (LERMA, Observatoire de Paris)

Comments: 6 pages, 2 figures, to appear in "The Evolution of Starbursts", ed. S. Huettemeister et al., AIP Proceedings

Subjects: Astrophysics (astro-ph)

[410] arXiv:astro-ph/0410411 [pdf, other]

Title: Lens binarity vs limb darkening in close-impact galactic microlensing events

M. Dominik

Comments: 11 pages in LaTeX2e format, uses 'this http URL', 6 figures in 10 EPS-files embedded. Submitted to MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc. 361 (2005) 300-310

Subjects: Astrophysics (astro-ph)

[411] arXiv:astro-ph/0410412 [pdf, other]

Title: Observational population studies of cataclysmic variables - The golden era of surveys

B.T. Gaensicke

Comments: 14 pages, 10 figures, to appear in The astrophysics of cataclysmic variables and related objects, ASP Conf. Ser., eds. J.M. Hameury and J.P. Lasota

Subjects: Astrophysics (astro-ph)

[412] arXiv:astro-ph/0410413 [pdf, other]

Title: Quantum-Gravity phenomenology and high energy particle propagation

R. Aloisio, P. Blasi, A. Galante, P.L. Ghia, A.F. Grillo

Comments: 6 pages, to appear in the Proc. Cosmic Ray International Seminar CRIS 2004, Catania, Italy, May 31 - June 4, 2004

Subjects: Astrophysics (astro-ph)

[413] arXiv:astro-ph/0410414 [pdf, other]

Title: Nuclear Starbursts in Nearby Seyfert Galaxies

A. Romano, A. Rifatto, S.Ciroi, P. Rafanelli, M. Dopita

Comments: Proceedings of the 6th Italian Conference on Active Galactic Nuclei, held in Volterra, 25-28 May 2004

Subjects: Astrophysics (astro-ph)

[414] arXiv:astro-ph/0410415 [pdf, other]

Title: Expansive components in H II regions

M. Relano, J. E. Beckman

Comments: 16 pages, 9 figures, accepted for publication in A&A

Subjects: Astrophysics (astro-ph)

[415] arXiv:astro-ph/0410416 [pdf, other]

Title: A New Milky Way Companion: Unusual Globular Cluster or Extreme Dwarf Satellite?

Beth Willman (NYU), Michael R. Blanton (NYU), Andrew A. West (UW), Julianne J. Dalcanton (UW), David W. Hogg (NYU), Donald P. Schneider (Penn State), Nicholas Wherry (NYU), Brian Yanny (Fermilab), Jon Brinkmann (APO)

Comments: Replaced with AJ accepted version

Journal-ref: Astron.J.129:2692-2700,2005

Subjects: Astrophysics (astro-ph)

[416] arXiv:astro-ph/0410417 [pdf, other]

Title: Preon stars: a new class of cosmic compact objects

J. Hansson, F. Sandin

Comments: 10 pages, 3 figures

Journal-ref: Phys.Lett. B616 (2005) 1-7

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

[417] arXiv:astro-ph/0410418 [pdf, other]

Title: Lithium in Very Metal-poor Dwarf Stars - Problems for Standard Big Bang Nucleosynthesis?

David L. Lambert

Comments: 18 pages, 5 figures, accepted for publication in joint proceedings for Mitchell Symposium on Observational Cosmology and Strings and Cosmology Conference

Subjects: Astrophysics (astro-ph)

[418] arXiv:astro-ph/0410419 [pdf, other]

Title: Constrained Simulations of the Magnetic Field in the Local Universe and the Propagation of UHECRs

Klaus Dolag, Dario Grasso, Volker Springel, Igor Tkachev

Comments: 3revised version, JCAP, accepted

Journal-ref: JCAP 0501:009,2005

Subjects: Astrophysics (astro-ph)

[419] arXiv:astro-ph/0410420 [pdf, other]

Title: The Alcock-Paczynski test in redshifted twenty one centimeter maps

Adi Nusser

Comments: matches accepted version

Journal-ref: Mon.Not.Roy.Astron.Soc. 364 (2005) 743-750

Subjects: Astrophysics (astro-ph)

[420] arXiv:astro-ph/0410421 [pdf, other]

Title: The great disk of Milky-Way satellites and cosmological sub-structures

Pavel Kroupa (University of Bonn), Christian Theis (University of Vienna), Christian M. Boily (University of Strasbourg)

Comments: accepted by A&A, 5 pages

Journal-ref: Astron.Astrophys.431:517-521,2005

Subjects: Astrophysics (astro-ph)

[421] arXiv:astro-ph/0410422 [pdf, other]

Title: The \chi Factor: Determining the Strength of Activity in Low Mass Dwarfs

Lucianne M. Walkowicz, Suzanne L. Hawley, Andrew A. West

Comments: 11 pages, 5 figures. Accepted for publication in PASP

Subjects: Astrophysics (astro-ph)

[422] arXiv:astro-ph/0410423 [pdf, other]

Title: Production of photons in a bouncing universe

J.M. Salim, S.E. Perez Bergliaffa, N. Souza

Comments: 7pages, 4 figures

Journal-ref: Class.Quant.Grav. 22 (2005) 975-986

Subjects: Astrophysics (astro-ph)

[423] arXiv:astro-ph/0410424 [pdf, other]

Title: Ram Pressure Stripping in the Low Luminosity Virgo Cluster Elliptical Galaxy NGC 4476

D. M. Lucero, L. M. Young (New Mexico Tech), J. H. van Gorkom (Columbia)

Comments: accepted by AJ

Subjects: Astrophysics (astro-ph)

[424] arXiv:astro-ph/0410425 [pdf, other]

Title: SDSSJ140228.22+632133.3: A New Spectroscopically Selected Gravitational Lens

Adam S. Bolton (1), Scott Burles (1), Leon V. E. Koopmans (2), Tommaso Treu (3), Leonidas A. Moustakas (4) ((1) MIT (2) Kapteyn Institute (3) UCLA (4) STScI)

Comments: 5 pages, 3 figures (1 color); uses this http URL; Submitted to ApJL

Journal-ref: Astrophys.J. 624 (2005) L21-L24

Subjects: Astrophysics (astro-ph)

[425] arXiv:astro-ph/0410426 [pdf, other]

Title: The Drag Induced Resonant Capture for Kuiper Belt Objects

Ing-Guey Jiang (IANCU, Taiwan), Li-Chin Yeh (NHCTC, Taiwan)

Comments: Figure 1 is replaced with the correct one

Subjects: Astrophysics (astro-ph)

[426] arXiv:astro-ph/0410427 [pdf, other]

Title: A Spreading Layer Origin for Dwarf Nova Oscillations

Anthony L. Piro (UCSB), Lars Bildsten (KITP, UCSB)

Comments: Accepted for publication in Astrophysical Journal Letters, 4 pages, 2 figures

Journal-ref: Astrophys.J. 616 (2004) L155-L158

Subjects: Astrophysics (astro-ph)

[427] arXiv:astro-ph/0410428 [pdf, other]

Title: MHD tidal waves on a spinning magnetic compact star

Yu-Qing Lou

Comments: ApJ Letter paper already published

Journal-ref: Astrophys.J. 563 (2001) L147

Subjects: Astrophysics (astro-ph)

[428] arXiv:astro-ph/0410429 [pdf, other]

Title: The r-process nucleosynthesis: a continued challenge for nuclear physics and astrophysics

S. Goriely, P. Demetriou, H.-Th. Janka, J.M. Pearson, M. Samyn

Comments: 8 pages, contribution to the Nuclei in the Cosmos Conference, to appear in Nucl. Phys. A

Subjects: Astrophysics (astro-ph)

[429] arXiv:astro-ph/0410430 [pdf, other]

Title: 3D-Kinematics of White Dwarfs from the SPY-Project

E-M. Pauli (1), U. Heber (1), R. Napiwotzki (2), M. Altmann (3), M. Odenkirchen (4) ((1) Dr. Remeis-Sternwarte, Astronomisches Institut der Universitaet Erlangen-Nuernberg, Bamberg, Germany (2) Department of Physics & Astronomy University of Leicester, UK (3) Departamento de Astronomia, Universidad de Chile, Las Condes, Chile (4) Max-Planck-Institut fuer Astronomie, Heidelberg, Germany)

Comments: 4 pages, 2 Fig., to appear in 14th European Workshop on White Dwarfs, ASP Conference Series, eds. D. Koester, S. Moehler

Subjects: Astrophysics (astro-ph)

[430] arXiv:astro-ph/0410431 [pdf, other]

Title: Strong Lensing Probabilities in a Cosmological Model with a Running Primordial Power Spectrum

Tong-Jie Zhang, Zhi-Liang Yang, Xiang-Tao He (Department of Astronomy, Beijing Normal University)

Comments: 11 pages including 1 figures. Accepted for publication in Modern Physics Letters A (MPLA), minor revisions

Journal-ref: Mod.Phys.Lett.A20:851-859,2005

Subjects: Astrophysics (astro-ph)

[431] arXiv:astro-ph/0410432 [pdf, other]

Title: XMM-Newton spectroscopy of an X-ray selected sample of RL AGNs

E. Galbiati, A. Caccianiga, T. Maccacaro, V. Braito, R. Della Ceca, P. Severgnini, H. Brunner, I. Lehmann, M.J. Page

Comments: 18 pages, 10 figures, accepted for publication in A&A

Subjects: Astrophysics (astro-ph)

[432] arXiv:astro-ph/0410433 [pdf, other]

Title: Subluminous O stars from the ESO Supernova Progenitor Survey - Observation versus Theory

A. Stroeer (1), U. Heber (1), T. Lisker (1,3), R. Napiwotzki (1,4), S. Dreizler (2) ((1) Dr. Remeis-Sternwarte, Astronomisches Institut der Universitaet Erlangen-Nuernberg, Bamberg, Germany (2) Sternwarte der Universitaet Goettingen, Germany (3) Institute of Astronomy, Departement of Physics, ETH Zuerich, Switzerland (4) Departement of Physics and Astronomy, University of Leicester, UK)

Comments: 6 pages, 4. Fig., Proceedings of 14th European Workshop on White Dwarfs, eds. D. Koester, S. Moehler ASP Conference Series

Subjects: Astrophysics (astro-ph)

[433] arXiv:astro-ph/0410434 [pdf, other]

Title: Looking for obscured QSOs in the X-ray emitting ERO population

P. Severgnini, R. Della Ceca, V. Braito, P. Saracco, M. Longhetti, R. Bender, N. Drory, G. Feulner, U. Hopp, F. Mannucci, C. Maraston

Comments: Accepted for publication on A&A; 10 pages, 5 figures

Subjects: Astrophysics (astro-ph)

[434] arXiv:astro-ph/0410435 [pdf, other]

Title: Chemical Evolution in the Carina Dwarf Spheroidal

A. Koch, E.K. Grebel, D. Harbeck, M.I. Wilkinson, J.T. Kleyna, G.F. Gilmore, R.F.G. Wyse, N.W. Evans

Comments: 3 pages, 2 figures, to be published in the proceedings of the ESO/Arcetri-workshop on "Chemical Abundances and Mixing in Stars", 13.-17. Sep. 2004, Castiglione della Pescaia, Italy, L. Pasquini, S. Randich (eds.)

Subjects: Astrophysics (astro-ph)

[435] arXiv:astro-ph/0410436 [pdf, other]

Title: Survey on solar X-ray flares and associated coherent radio emissions

Arnold O. Benz (1), Paolo Grigis (1)Andre Csillagy (1), Pascal Saint-Hilaire (1) ((1) ETH Zurich)

Comments: Solar Physics, in press

Subjects: Astrophysics (astro-ph)

[436] arXiv:astro-ph/0410437 [pdf, other]

Title: CALLISTO - A new concept for solar radio

Arnold O. Benz (1), Christian Monstein (1), HAnsueli Meyer (1) ((1) ETH Zurich)

Comments: Solar Physics, in press

Subjects: Astrophysics (astro-ph)

[437] arXiv:astro-ph/0410438 [pdf, other]

Title: Fine structure of the chromospheric activity in Solar-type stars - The Halpha Line

W. Lyra, G. F. Porto de Mello

Comments: 10 pages, 10 figures, accepted for publication in Astronomy & Astrophysics. Nature of replacement: match astro-ph and ADS title (greek letter)

Subjects: Astrophysics (astro-ph)

[438] arXiv:astro-ph/0410439 [pdf, other]

Title: An update on the SCUBA-2 project

Michael Audley (1), Wayne Holland (1), Trevor Hodson (1), Mike MacIntosh (1), Ian Robson (1), Kent Irwin (2), Gene Hilton (2), William Duncan (2), Carl Reintsema (2), Anthony Walton (3), William Parkes (3), Peter Ade (4), Ian Walker (4), Michel Fich (5), Jan Kycia (5), Mark Halpern (5), David Naylor (5), George Mitchell (5), Pierre Bastien (5) ((1) UK Astronomy Technology Centre, (2) NIST Boulder, (3) Scottish Microelectronics Centre, (4) Cardiff University, (5) Canadian SCUBA-2 Consortium)

Comments: 16 pages, 14 figures, Invited talk at SPIE Glasgow 21-25 June 2004, Conference 5498

Subjects: Astrophysics (astro-ph); Instrumentation and Methods for Astrophysics (astro-ph.IM)

[439] arXiv:astro-ph/0410440 [pdf, other]

Title: Metallicities of the beta Cephei stars from low-resolution ultraviolet spectra

E. Niemczura, J. Daszynska-Daszkiewicz

Comments: 15 pages, 8 figures, 5 tables

Subjects: Astrophysics (astro-ph)

[440] arXiv:astro-ph/0410441 [pdf, other]

Title: Constraints on a quintessence model from gravitational lensing statistics

M. Sereno (DSF, Universita` di Napoli, "Federico II", INAF-OAC, INFN-Sec. Napoli)

Comments: 8 pages, 6 figures; this is a preprint of an Article accepted for publication in MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc. 356 (2005) 937-943

Subjects: Astrophysics (astro-ph)

[441] arXiv:astro-ph/0410442 [pdf, other]

Title: Metallicity of mono- and multiperiodic beta Cephei stars

J. Daszynska-Daszkiewicz, E. Niemczura

Comments: 5 pages, 3 figures, 2 tables

Subjects: Astrophysics (astro-ph)

[442] arXiv:astro-ph/0410443 [pdf, other]

Title: Nonlocal String Tachyon as a Model for Cosmological Dark Energy

I.Ya.Aref'eva

Comments: 12pages, 5 figures, talk given at QUARKS-2004, Pushkinskie Gory, Russia, May 2004; Typos corrected, refs. added

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

[443] arXiv:astro-ph/0410444 [pdf, other]

Title: Star Formation, Massive Stars, and Super Star Clusters in Nearby Galaxies with the SKA

Kelsey E. Johnson

Comments: 11 pages, 4 figures, to appear in "Science with the Square Kilometer Array," eds. C. Carilli and S. Rawlings, New Astronomy Reviews (Elsevier: Amsterdam)

Journal-ref: New Astron.Rev. 48 (2004) 1337-1347

Subjects: Astrophysics (astro-ph)

[444] arXiv:astro-ph/0410445 [pdf, other]

Title: Two viable quintessence models of the Universe: confrontation of theoretical predictions with observational data

M. Demianski, E. Piedipalumbo, C. Rubano, C.Tortora

Comments: in press on A&A

Journal-ref: Astron.Astrophys. 431 (2005) 27-43

Subjects: Astrophysics (astro-ph)

[445] arXiv:astro-ph/0410446 [pdf, other]

Title: Sulfur chemistry and isotopic ratios in the starburst galaxy NGC 253

S. Martín, J. Martín-Pintado, R. Mauersberger, C. Henkel, S. García-Burillo

Comments: Accepted for publication in ApJ. 19 pages, 3 figures

Journal-ref: Astrophys.J. 620 (2005) 210-216

Subjects: Astrophysics (astro-ph)

[446] arXiv:astro-ph/0410447 [pdf, other]

Title: The Nearest Star of spectral type O3: A Component of the Multiple System HD 150136

V.S. Niemela, R.C. Gamen

Comments: 7 pages, 4 figures, accepted for MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc. 356 (2005) 974-978

Subjects: Astrophysics (astro-ph)

[447] arXiv:astro-ph/0410448 [pdf, other]

Title: A comprehensive model for the Monoceros tidal stream

J. Penarrubia, D. Martinez-Delgado, H.W. Rix, M.A Gomez-Flechoso, J. Munn, H. Newberg, E.F. Bell, B. Yanny, D. Zucker, E. K. Grebel

Comments: 43 pages, 12 figures, submitted to ApJ

Journal-ref: Astrophys.J.626:128-144,2005

Subjects: Astrophysics (astro-ph)

[448] arXiv:astro-ph/0410449 [pdf, other]

Title: Close binary companions of the HAeBe stars LkHa 198, Elias 1, HK Ori and V380 Ori

K. W. Smith, Y. Y. Balega, W. J. Duschl, K.-H. Hofmann, R. Lachaume, T. Preibisch, D. Schertl, G. Weigelt

Comments: 14 pages, 10 figures, 22 separate figure files

Journal-ref: 2005, A&A 431, p.307-319

Subjects: Astrophysics (astro-ph)

[449] arXiv:astro-ph/0410450 [pdf, other]

Title: Observational evidence of spin-induced precession in active galactic nuclei

Anderson Caproni (IAG/USP)Herman J. Mosquera Cuesta (ICRA-BR/CBPF)Zulema Abraham (IAG/USP)

Comments: 10 pages, 1 figure, accepted for publication in ApJ Letters

Journal-ref: Astrophys.J.616:L99-L102,2004

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

[450] arXiv:astro-ph/0410451 [pdf, other]

Title: Quantification of discreteness effects in cosmological N-body simulations: I. Initial Conditions

Michael Joyce, Bruno Marcos

Comments: Final published version, 22 pages and 16 figures, very significantly revised, one important correction (range of allowed exponents), modified title (now part one of a series)

Subjects: Astrophysics (astro-ph); Statistical Mechanics (cond-mat.stat-mech)