Astrophysics

Authors and titles for June 2007

[401] arXiv:0706.2186 [pdf, other]

Title: Cosmic Acceleration, Dark Energy and Fundamental Physics

Michael S. Turner, Dragan Huterer (KICP, University of Chicago)

Comments: 10 pages, 8 figures, invited review for Journal of the Physical Society of Japan, in press

Journal-ref: J.Phys.Soc.Jap.76:111015,2007

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

[402] arXiv:0706.2188 [pdf, other]

Title: Black Hole Constraints on Varying Fundamental Constants

Jane H MacGibbon

Comments: 5 pages, published version

Journal-ref: Phys.Rev.Lett.99:061301,2007

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

[403] arXiv:0706.2189 [pdf, other]

Title: Effects of Selection and Covariance on X-ray Scaling Relations of Galaxy Clusters

B.Nord, R. Stanek, E. Rasia, A.E. Evrard

Comments: 5pages, 4 Figures, Submitted to MNRAS

Subjects: Astrophysics (astro-ph)

[404] arXiv:0706.2197 [pdf, other]

Title: The cycle of interstellar dust in galaxies of different morphological types

Francesco Calura (1), Antonio Pipino (2,3), Francesca Matteucci (1,2) (- 1 INAF - Osservatorio Astronomico di Trieste; 2 Dip. di Astronomia, Universita' di Trieste; 3 Department of Physics, University of Oxford.)

Comments: 20 pages, A&A, accepted. Minor changes after referee report

Subjects: Astrophysics (astro-ph)

[405] arXiv:0706.2206 [pdf, other]

Title: A Case Study of Low-Mass Star Formation

J. Swift, Wm. J. Welch

Comments: 24 pages, 21 figures, ApJS accepted

Subjects: Astrophysics (astro-ph)

[406] arXiv:0706.2211 [pdf, other]

Title: Holographic hessence models

Wen Zhao

Comments: 10 pages, 5 figures, PLB accepted

Journal-ref: Phys.Lett.B655:97-103,2007

Subjects: Astrophysics (astro-ph)

[407] arXiv:0706.2221 [pdf, other]

Title: Generalized pseudo-Newtonian potential for studying accretion disk dynamics in off-equatorial planes around rotating black holes: Description of a vector potential

Shubhrangshu Ghosh, Banibrata Mukhopadhyay

Comments: 22 AASTeX pages including 5 postscript figures; Accepted for publication in The Astrophysical Journal

Journal-ref: Astrophys.J.667:367-374,2007

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

[408] arXiv:0706.2225 [pdf, other]

Title: Significance Tests for Periodogram Peaks

F. A. M. Frescura (1), C. A. Engelbrecht (2), B. S. Frank (1) ((1) University of the Witwatersrand, (2) University of Johannesburg)

Comments: 22 pages, 11 Encapsulated Postscript figures, AAS LaTeX v5.2 Submitted to ApJ

Subjects: Astrophysics (astro-ph)

[409] arXiv:0706.2227 [pdf, other]

Title: The Norma Cluster (ACO 3627): I. A Dynamical Analysis of the Most Massive Cluster in the Great Attractor

P.A. Woudt (UCT), R.C. Kraan-Korteweg (UCT), J. Lucey (Durham), A.P. Fairall (UCT), S.A.W. Moore (Durham)

Comments: Sumbitted to MNRAS. 13 pages, 11 figures. Figures 6 and 10 reduced in resolution. Original available on request

Subjects: Astrophysics (astro-ph)

[410] arXiv:0706.2234 [pdf, other]

Title: A wide deep infrared look at the Pleiades with UKIDSS: new constraints on the substellar binary fraction and the low mass IMF

N. Lodieu (1 and 2), P. D. Dobbie (3 and 2), N. R. Deacon (4), S. T. Hodgkin (5), N. C. Hambly (6), R. F. Jameson (2) ((1) IAC, Tenerife, (2) Leicester, UK, (3) AAO, Australia, (4) Radboud University Nijmegen, (5) IoA, Cambridge, UK, (6) SUPA, ROE, Edinburgh, UK)

Comments: 21 pages, 8 figures, 6 tables, 1 electronic table, 6 appendices with tables, accepted to MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc.380:712-732,2007

Subjects: Astrophysics (astro-ph)

[411] arXiv:0706.2243 [pdf, other]

Title: GAVO Tools for the Analysis of Stars and Nebulae

Thomas Rauch (Institut fuer Astronomie und Astrophysik, Tuebingen, Germany)

Comments: 4 pages, 3 figures

Subjects: Astrophysics (astro-ph)

[412] arXiv:0706.2245 [pdf, other]

Title: HST Spectroscopy of the Hottest White Dwarfs

Thomas Rauch, Klaus Werner (Institut fuer Astronomie und Astrophysik, Tuebingen, Germany)

Comments: 4 pages, 1 figure

Subjects: Astrophysics (astro-ph)

[413] arXiv:0706.2255 [pdf, other]

Title: The magnetic field topology in the reconnecting pulsar magnetosphere

Ioannis Contopoulos

Comments: Accepted for publication in Astronomy and Astrophysics

Subjects: Astrophysics (astro-ph)

[414] arXiv:0706.2256 [pdf, other]

Title: High-resolution FUSE and HST ultraviolet spectroscopy of the white dwarf central star of Sh 2-216

T. Rauch (1), M. Ziegler (1), K. Werner (1), J.W. Kruk (2), C.M. Oliveira (2), D. Vande Putte (3), R.P. Mignani (3), F. Kerber (4) ((1) Institut fuer Astronomie und Astrophysik, Tuebingen, Germany, (2) Department of Physics and Astronomy, Johns Hopkins University, Baltimore, U.S.A., (3) Mullard Space Science Laboratory, University College London, Dorking, United Kingdom,(4) European Southern Observatory, Garching, Germany)

Comments: 13 pages, 20 figures

Subjects: Astrophysics (astro-ph)

[415] arXiv:0706.2275 [pdf, other]

Title: A dust component 2 kpc above the plane in NGC 891

P. Kamphuis, B. W. Holwerda, R. J. Allen, R. F. Peletier, P. C. van der Kruit

Comments: A&A in press. 5 pages, 3 figures

Subjects: Astrophysics (astro-ph)

[416] arXiv:0706.2278 [pdf, other]

Title: MOST photometry and DDO spectroscopy of the eclipsing (white dwarf + red dwarf) binary V471 Tau

Krzysztof Z. Kaminski, Slavek M. Rucinski, Jaymie M. Matthews, Rainer Kuschnig, Jason F. Rowe, David B. Guenther, Anthony F. J. Moffat, Dimitar Sasselov, Gordon A. H. Walker, Werner W. Weiss

Comments: accepted for publication in AJ

Journal-ref: Astron.J.134:1206-1215,2007

Subjects: Astrophysics (astro-ph)

[417] arXiv:0706.2283 [pdf, other]

Title: Search for Supernova Neutrino Bursts at Super-Kamiokande

Super-Kamiokande Collaboration: M.Ikeda, A.Takeda, Y.Fukuda, M.R.Vagins, et al

Comments: 7 pages, 6 figures

Journal-ref: Astrophys.J.669:519-524,2007

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

[418] arXiv:0706.2288 [pdf, other]

Title: The fraction of binary systems in the core of thirteen low-density Galactic globular clusters

A. Sollima, G. Beccari, F. R. Ferraro, F. Fusi Pecci, A. Sarajedini

Comments: 12 pages, 10 figures, accepted for publication by MNRAS

Subjects: Astrophysics (astro-ph)

[419] arXiv:0706.2299 [pdf, other]

Title: Diffuse HI Disks in Isolated Galaxies

David E. Hogg, Morton S. Roberts, Martha P. Haynes, Ronald J. Maddalena

Comments: 26 pages

Journal-ref: Astron.J.134:1046-1060,2007

Subjects: Astrophysics (astro-ph)

[420] arXiv:0706.2301 [pdf, other]

Title: X-ray detection of the substellar twin 2MASS J11011926-7732383 AB

B. Stelzer, G. Micela (INAF - OA Palermo)

Comments: accepted for publication in Astronomy & Astrophysics

Subjects: Astrophysics (astro-ph)

[421] arXiv:0706.2323 [pdf, other]

Title: A sample of mJy radio sources at 1.4 GHz in the Lynx and Hercules fields - I. Radio imaging, multicolour photometry and spectroscopy

E. E. Rigby, I. A. Snellen, P. N. Best

Comments: Accepted by MNRAS; 24 pages, 7 figures. A full version, including figures is available at this http URL

Subjects: Astrophysics (astro-ph)

[422] arXiv:0706.2325 [pdf, other]

Title: The Monitor project: JW 380 -- a 0.26, 0.15 Msol pre main sequence eclipsing binary in the Orion Nebula Cluster

Jonathan Irwin, Suzanne Aigrain, Simon Hodgkin, Keivan G. Stassun, Leslie Hebb, Mike Irwin, Estelle Moraux, Jerome Bouvier, Aude Alapini, Richard Alexander, D.M. Bramich, Jon Holtzman, Eduardo L. Martin, Mark J. McCaughrean, Frederic Pont, P.E. Verrier, Maria Rosa Zapatero Osorio

Comments: 11 pages, 9 figures, accepted for publication in MNRAS

Subjects: Astrophysics (astro-ph)

[423] arXiv:0706.2326 [pdf, other]

Title: The Cosmic Horseshoe: Discovery of an Einstein Ring around a Giant Luminous Red Galaxy

V. Belokurov (1), N.W.Evans (1), A.Moiseev (2), L.J. King (1), P.C. Hewett (1), M. Pettini (1), L. Wyrzykowski (1,4), R.G. McMahon (1), M.C. Smith (1), G. Gilmore (1), S.F. Sanchez (3), A. Udalski (4), S. Koposov (5), D.B. Zucker (1), C.J. Walcher (6) ((1) Cambridge, (2) SAO, (3) Calar Alto, (4) Warsaw, (5) MPIA, (6) Marseille)

Comments: ApJ (Letters), in press

Subjects: Astrophysics (astro-ph)

[424] arXiv:0706.2337 [pdf, other]

Title: The extended structure of the remote cluster B514 in M31. Detection of extra-tidal stars

L. Federici, M. Bellazzini, S. Galleti, F. Fusi Pecci, A. Buzzoni, G. Parmeggiani

Comments: 9 pages, 6 figures. Accepted for publication in Astronomy & Astrophysics

Subjects: Astrophysics (astro-ph)

[425] arXiv:0706.2338 [pdf, other]

Title: The light variability of the helium strong star HD 37776 as a result of its inhomogeneous elemental surface distribution

J. Krticka, Z. Mikulasek, J. Zverko, J. Ziznovsky

Comments: 11 pages, accepted for the publication in Astronomy & Astrophysics

Subjects: Astrophysics (astro-ph)

[426] arXiv:0706.2344 [pdf, other]

Title: Detectors for the James Webb Space Telescope Near-Infrared Spectrograph I: Readout Mode, Noise Model, and Calibration Considerations

Bernard J. Rauscher, Ori Fox, Pierre Ferruit, et al

Comments: 55 pages, 10 figures

Subjects: Astrophysics (astro-ph)

[427] arXiv:0706.2346 [pdf, other]

Title: Non-Gaussianity analysis on local morphological measures of WMAP data

Y. Wiaux, P. Vielva, R. B. Barreiro, E. Martinez-Gonzalez, P. Vandergheynst

Comments: 10 pages, 3 figures. Version 2 includes minor changes to match version accepted for publication in MNRAS

Journal-ref: Mon. Not. R. Astron. Soc. 385 (2008) 939

Subjects: Astrophysics (astro-ph)

[428] arXiv:0706.2351 [pdf, other]

Title: Probing the Relation Between X-ray-Derived and Weak-Lensing-Derived Masses for Shear-Selected Galaxy Clusters: I. A781

Neelima Sehgal (1), John P. Hughes (1), David Wittman (2), Vera Margoniner (2), J. Anthony Tyson (2), Perry Gee (2), Ian Dell'Antonio (3) ((1) Rutgers, (2) UC Davis, (3) Brown)

Comments: 14 pages, 7 figures, matches version in ApJ

Journal-ref: Astrophys.J. 673 (2008) 163-175

Subjects: Astrophysics (astro-ph)

[429] arXiv:0706.2360 [pdf, other]

Title: Magnetorotational collapse of very massive stars to black holes in full general relativity

Yuk Tung Liu, Stuart L. Shapiro, Branson C. Stephens (UIUC)

Comments: 17 pages, 13 figures, replaced with the published version

Journal-ref: Phys.Rev.D76:084017,2007

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

[430] arXiv:0706.2361 [pdf, other]

Title: A Parallactic Distance of 389 +24/-21 parsecs to the Orion Nebula Cluster from Very Long Baseline Array Observations

Karin M. Sandstrom, J. E. G. Peek, Geoffrey C. Bower, Alberto D. Bolatto, Richard L. Plambeck

Comments: 10 pages, 4 figures, emulateapj, accepted to ApJ

Subjects: Astrophysics (astro-ph)

[431] arXiv:0706.2364 [pdf, other]

Title: Super Star Cluster NGC1705-1: A Local Analogue to the Birthsite of Long-duration Gamma-ray Bursts

Hsiao-Wen Chen (University of Chicago), J. X. Prochaska (UCO/Lick Observatory), Joshua S. Bloom (UC Berkeley)

Comments: 20 pages, including 3 figurs. ApJ in press

Subjects: Astrophysics (astro-ph)

[432] arXiv:0706.2374 [pdf, other]

Title: Line and Mean Opacities for Ultracool Dwarfs and Extrasolar Planets

Richard S. Freedman, Mark S. Marley, Katharina Lodders

Comments: 32 pages, 6 figures, accepted for publication in Astrphysical Journal Supplement, units revised, now includes on-line only data files (available in "source" package from "other formats" link)

Subjects: Astrophysics (astro-ph)

[433] arXiv:0706.2376 [pdf, other]

Title: Dynamical Masses for Pre-Main Sequence Stars: A Preliminary Physical Orbit for V773 Tau A

A.F. Boden, G. Torres, A.I. Sargent, R.L. Akeson, J.M. Carpenter, D.A. Boboltz, M. Massi, A. M. Ghez, D.W. Latham, K.J Johnston, K.M. Menten, E. Ros

Comments: ApJ in press; 25 pages, 6 figures; data tables available in journal version

Subjects: Astrophysics (astro-ph)

[434] arXiv:0706.2378 [pdf, other]

Title: Geysers in the Lagoon: new Herbig-Haro objects in M8

Rodolfo H. Barbá (1), Julia I. Arias (1,2) ((1) Departamento de Física, Universidad de La Serena, Chile (2) Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Argentina)

Comments: 9 pages, 6 postscript figures (one in color). Accepted, Astronomy and Astrophysics

Journal-ref: Astron.Astrophys.471:841-847,2007

Subjects: Astrophysics (astro-ph)

[435] arXiv:0706.2382 [pdf, other]

Title: A characteristic observable signature of preferred frame effects in relativistic binary pulsars

N. Wex, M. Kramer (University of Manchester, Jodrell Bank Centre for Astrophysics)

Comments: Accepted for publication in MNRAS, 12 pages, 5 figures, figures 3 and 5 in reduced quality due to size limitations

Subjects: Astrophysics (astro-ph)

[436] arXiv:0706.2386 [pdf, other]

Title: The Scattering Polarization of the Sr I 4607 \AA Line at the Diffraction Limit Resolution of a 1-m Telescope

Javier Trujillo Bueno, Nataliya Shchukina

Comments: Accepted for publication in The Astrophysical Journal Letters (12 pages and 2 color figures)

Subjects: Astrophysics (astro-ph)

[437] arXiv:0706.2389 [pdf, other]

Title: Models for microquasars

Julien Malzac

Comments: 15 pages, 3 figures, invited review at the Sixth Microquasar workshop: Microquasars and Beyond, Como, Italy, September 18-22, 2006

Subjects: Astrophysics (astro-ph)

[438] arXiv:0706.2395 [pdf, other]

Title: Combining Weak Lensing Tomography with Halo Clustering to Probe Dark Energy

Charles Shapiro (Chicago, KICP), Scott Dodelson (Chicago, FNAL)

Comments: 4 pages, 2 color figures. Revised text for clarity and for resubmission to PhysRevD. Corrected error in our cluster counting Fisher matrix; combined dark energy constraints are now weaker, but our conclusions are the same

Journal-ref: Phys.Rev.D76:083515,2007

Subjects: Astrophysics (astro-ph)

[439] arXiv:0706.2399 [pdf, other]

Title: Cosmological Constraints on f(R) Acceleration Models

Yong-Seon Song, Hiranya Peiris, Wayne Hu (KICP, UChicago)

Comments: 8 pages, 7 figures

Journal-ref: Phys.Rev.D76:063517,2007

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

[440] arXiv:0706.2405 [pdf, other]

Title: Dispersion Relation for Alfven Waves in a Viscous, Diffusive Plasma

Suresh Chandra

Comments: 4 pages

Subjects: Astrophysics (astro-ph)

[441] arXiv:0706.2443 [pdf, other]

Title: Multiple inflation and the WMAP 'glitches' II. Data analysis and cosmological parameter extraction

Paul Hunt (Oxford U. and ITP Warsaw), Subir Sarkar (Oxford U.)

Comments: 27 pages, 18 figures (RevTex); Tables revised to include the χ^2 and "Akaike information criterion" in comparison of cosmological models; Fits to WMAP3 EE spectrum shown; Additional references added; Accepted for publication in in Phys Rev D

Journal-ref: Phys.Rev.D76:123504,2007

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

[442] arXiv:0706.2445 [pdf, other]

Title: GRB Cosmology

Volker Bromm, Abraham Loeb

Comments: 24 pages, 9 figures, review to appear in "Gamma-ray Bursts" (CUP), a few references added

Subjects: Astrophysics (astro-ph)

[443] arXiv:0706.2446 [pdf, other]

Title: Transport and mixing by internal waves in stellar interiors: effect of the Coriolis force

S. Mathis, J.-P. Zahn

Comments: 4 pages, SF2A-2005: Semaine de l'Astrophysique Francaise, meeting held in Strasbourg, France, June 27 - July 1, 2005, Edited by F. Casoli, T. Contini, J.M. Hameury and L. Pagani. Published by EdP-Sciences, Conference Series, 2005, p. 319

Subjects: Astrophysics (astro-ph)

[444] arXiv:0706.2473 [pdf, other]

Title: Active Galactic Nuclei with Double-Peaked Balmer Lines: I. Black Hole Masses and the Eddington ratios

Wei-Hao Bian (1,2), Yan-Mei Chen (1), Qu-Sheng Gu (3), Jin-Min Wang (1) (<a href="http://1.Ihep" rel="external noopener nofollow" class="link-external link-http">this http URL</a>, 2. Njnu, 3. Nju)

Comments: 10 pages, 9 figures, 1 table, accepted for publication in ApJ

Subjects: Astrophysics (astro-ph)

[445] arXiv:0706.2498 [pdf, other]

Title: Decoherence in supernova neutrino transformations suppressed by deleptonization

Andreu Esteban-Pretel, Sergio Pastor, Ricard Tomas, Georg G. Raffelt, Gunter Sigl

Comments: 17 pages, 12 figures. Misprint in Eq (14) corrected

Journal-ref: Phys.Rev.D76:125018,2007

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

[446] arXiv:0706.2503 [pdf, other]

Title: New Solutions of the Inflationary Flow Equations

Michal Spalinski

Comments: References added, and a couple of comments

Journal-ref: JCAP0708:016,2007

Subjects: Astrophysics (astro-ph)

[447] arXiv:0706.2504 [pdf, other]

Title: Singular Sources of Energy in Stars and Planets

B.E. Zhilyaev

Comments: 7 pages

Journal-ref: KinematicsPhys.Celest.Bodies4:211-216,2003

Subjects: Astrophysics (astro-ph)

[448] arXiv:0706.2519 [pdf, other]

Title: Chandra Observation of the Cluster Environment of a WAT Radio Source in Abell 1446

E. M. Douglass, Elizabeth L. Blanton, T. E. Clarke, Craig L. Sarazin, Michael Wise

Comments: 40 AASTeX pages including 15 postscript figures; accepted for publication in ApJ

Subjects: Astrophysics (astro-ph)

[449] arXiv:0706.2527 [pdf, other]

Title: Effects of Magnetic Fields on Neutrino-dominated Accretion Model for Gamma-ray Bursts

Yi Xie, Chang-Yin Huang, Wei-Hua Lei

Comments: 10 pages, 4 figures, accepted by ChJAA

Subjects: Astrophysics (astro-ph)

[450] arXiv:0706.2547 [pdf, other]

Title: Swift-XRT observation of 34 new INTEGRAL/IBIS AGNs: discovery of Compton thick and other peculiar sources

A. Malizia, R. Landi, L. Bassani, A.J. Bird, M. Molina, A. De Rosa, M. Fiocchi, N. Gehrels, J.Kennea, M. Perri

Comments: 15 pages, 5 figures, ApJ accepted

Subjects: Astrophysics (astro-ph)