Astrophysics

Authors and titles for February 2007

[251] arXiv:astro-ph/0702251 [pdf, other]

Title: Observations of pulsations in roAp stars

O. Kochukhov

Comments: To appear in the proceedings of Vienna Workshop on the Future of Asteroseismology, eds. G. Handler and G. Houdek, Comm. in Asteroseismology

Subjects: Astrophysics (astro-ph)

[252] arXiv:astro-ph/0702252 [pdf, other]

Title: Self-similar solutions for the emergence of energy varying shock waves from plane-parallel atmospheres

Akihiro Suzuki, Toshikazu Shigeyama

Comments: 8 pages, 7 figures, to appear in ApJ

Subjects: Astrophysics (astro-ph)

[253] arXiv:astro-ph/0702253 [pdf, other]

Title: Whiting 1: the youngest globular cluster associated with the Sgr dSph

Giovanni Carraro (Padova), Robert Zinn (Yale), Christian Moni Bidin (UChile)

Comments: 9 pages, 9 eps figures (some degraded in resolution), in press in Astronomy and Astrophysics. Abstract here below has been shortened to fit in

Subjects: Astrophysics (astro-ph)

[254] arXiv:astro-ph/0702254 [pdf, other]

Title: On the Present and Future of Pulsar Astronomy

W.Becker (MPE), J.Gil (Uni. of Zielona Gora), B. Rudak (CAMK Torun)

Comments: Summary of the Joined Discussion (JD02) held at the XXVI IAU General Assembly in 2006 August in Prague. To appear in "Highlights of Astronomy, Volume 14", ed. K.A. van der Hucht

Subjects: Astrophysics (astro-ph)

[255] arXiv:astro-ph/0702255 [pdf, other]

Title: The dynamics of a fully radiative rapidly rotating star

F. Espinosa Lara, M. Rieutord

Comments: 11 pages, 12 fig., to appear in AA,

Subjects: Astrophysics (astro-ph)

[256] arXiv:astro-ph/0702256 [pdf, other]

Title: The Nature of Galactic Bulges from SAURON Absorption Line Strength Maps

Reynier F. Peletier, Jesus Falcon-Barroso, Katia Ganda, Roland Bacon, Michele Cappellari, Roger L. Davies, P. Tim de Zeeuw, Eric Emsellem, Davor Krajnovic, Harald Kuntschner, Richard M. McDermid, Marc Sarzi, Glenn van de Ven

Comments: 4 pages, 2 figures, to be published in the proceedings of IAU Symposium No. 241, "Stellar Populations as Building Blocks of Galaxies", editors A. Vazdekis and R.F. Peletier

Subjects: Astrophysics (astro-ph)

[257] arXiv:astro-ph/0702257 [pdf, other]

Title: Cosmological Voids: Observational Evidence and Models

Marco Serpico

Comments: Published in the Proceedings of the "I Workshop of Astronomy and Astrophysics for Students", Eds. N.R. Napolitano & M. Paolillo, Naples, 19-20 April 2006 (astro-ph/0701577)

Subjects: Astrophysics (astro-ph)

[258] arXiv:astro-ph/0702258 [pdf, other]

Title: The Origin of the Gaussian Initial Mass Function of Old Globular Cluster Systems

Geneviève Parmentier (1), Gerard Gilmore (2) ((1) IAGL, Liège, Belgium; (2) IoA, Cambridge, UK)

Comments: 24 pages, accepted for publication in MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc.377:352-372,2007

Subjects: Astrophysics (astro-ph)

[259] arXiv:astro-ph/0702259 [pdf, other]

Title: Bulk viscosity in kaon condensed matter

Debarati Chatterjee, Debades Bandyopadhyay

Comments: LaTeX, 32 pages, 9 figures; two tables and one new figure are added; some figures are modified and discussed in section III; version to appear in Phys. Rev. D

Journal-ref: Phys.Rev.D75:123006,2007

Subjects: Astrophysics (astro-ph)

[260] arXiv:astro-ph/0702260 [pdf, other]

Title: Density of dark matter in Solar system and perihelion precession of planets

I.B. Khriplovich

Comments: 4 pages; some explanations on derivation of master formula added

Journal-ref: Int.J.Mod.Phys.D16:1475-1478,2007

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

[261] arXiv:astro-ph/0702261 [pdf, other]

Title: Magnetic structures produced by the small-scale dynamo

S. Louise Wilkin, Carlo F. Barenghi, Anvar Shukurov

Comments: 4 pages, 6 figures Replacement of v1: references added, text shortened, title slightly changed

Journal-ref: Phys.Rev.Lett.99:134501,2007

Subjects: Astrophysics (astro-ph)

[262] arXiv:astro-ph/0702262 [pdf, other]

Title: GRB 050822: Detailed analysis of an XRF observed by Swift

O. Godet, K.L. Page, J. Osborne, B. Zhang, D.N. Burrows, P.T. O'Brien, J. E. Hill, J. Racusin, A.P. Beardmore, M.R. Goad, A. Falcone, D.C. Morris, H. Ziaeepour

Comments: Now accepted for publication in A&A

Subjects: Astrophysics (astro-ph)

[263] arXiv:astro-ph/0702263 [pdf, other]

Title: Study of the Fast X-Ray Transient XTE J1901+014 Based on INTEGRAL, RXTE and ROSAT Data

D.I.Karasev, A.A.Lutovinov, S.A.Grebenev (Space Research Institute, Moscow, Russia)

Comments: 19 pages, 7 figures

Journal-ref: Astron.Lett. 33 (2007) 135-143; Pisma Astron.Zh. 33 (2007) 186-195

Subjects: Astrophysics (astro-ph)

[264] arXiv:astro-ph/0702264 [pdf, other]

Title: Observation of inertial energy cascade in interplanetary space plasma

Luca Sorriso-Valvo, Raffaele Marino, Vincenzo Carbone, Fabio Lepreti, Pierluigi Veltri, Alain Noullez, Roberto Bruno, Bruno Bavassano, Ermanno Pietropaolo

Journal-ref: Phys.Rev.Lett.99:115001,2007

Subjects: Astrophysics (astro-ph); Chaotic Dynamics (nlin.CD); Plasma Physics (physics.plasm-ph)

[265] arXiv:astro-ph/0702265 [pdf, other]

Title: Search for neutrino-induced cascades from gamma-ray bursts with AMANDA

IceCube Collaboration: A. Achterberg, et al

Comments: 38 pages. 16 postscript figures. Accepted for publication in the Astrophysical Journal

Journal-ref: Astrophys.J.664:397-410,2007

Subjects: Astrophysics (astro-ph)

[266] arXiv:astro-ph/0702266 [pdf, other]

Title: Optically Thick [O I] and [C II] Emission Towards NGC 6334 A

N. P. Abel, A. P. Sarma, T. H. Troland, G. J. Ferland

Comments: 27 pages, 8 figures, accepted for publication in the Astrophysical Journal

Journal-ref: Astrophys.J.662:1024-1032,2007

Subjects: Astrophysics (astro-ph)

[267] arXiv:astro-ph/0702267 [pdf, other]

Title: Conference summary: Mass loss from stellar clusters

M. Gieles (Utrecht University/ESO Santiago)

Comments: 6 pages, To appear in "Mass loss from stars and the evolution of stellar clusters". Proc. of a workshop held in honour of H.J.G.L.M. Lamers, Lunteren, The Netherlands. Eds. A. de Koter, L. Smith and R. Waters (San Francisco: ASP)

Subjects: Astrophysics (astro-ph)

[268] arXiv:astro-ph/0702268 [pdf, other]

Title: Pre-main sequence spectroscopic binaries suitable for VLTI observations

E. W. Guenther, M. Esposito, R. Mundt, E. Covino, J. M. Alcala, F. Cusano, B. Stecklum

Comments: 16 pages

Subjects: Astrophysics (astro-ph)

[269] arXiv:astro-ph/0702269 [pdf, other]

Title: "Meissner effect" and Blandford-Znajek mechanism in conductive black hole magnetospheres

S.S.Komissarov, J.C. McKinney

Comments: Accepted by MNRAS Letters

Journal-ref: Mon.Not.Roy.Astron.Soc.Lett.377:L49-L53,2007

Subjects: Astrophysics (astro-ph)

[270] arXiv:astro-ph/0702270 [pdf, other]

Title: The complementary roles of interferometry and asteroseismology in determining the mass of solar-type stars

O. L. Creevey (1,2,3), M. J. P. F. G. Monteiro (2), T. S. Metcalfe (1), T. M. Brown (1), S. J. Jiménez-Reyes (3), J. A. Belmonte (3) ((1) HAO Boulder, CO, USA; (2) CAUP Porto, Portugal; (3) IAC Tenerife, Spain)

Comments: 7 pages text; 6 pages ref+figures+tables; accepted by ApJ; uses emulateapj5

Journal-ref: Astrophys.J.659:616-625,2007

Subjects: Astrophysics (astro-ph)

[271] arXiv:astro-ph/0702271 [pdf, other]

Title: A Keck Spectroscopic Survey of MS1054-03 (z=0.83): Forming the Red Sequence

Kim-Vy H. Tran, Marijn Franx, Garth D. Illingworth, Pieter van Dokkum, Daniel D. Kelson, John P. Blakeslee, Marc Postman

Comments: Accepted by ApJ

Journal-ref: Astrophys.J.661:750-767,2007

Subjects: Astrophysics (astro-ph)

[272] arXiv:astro-ph/0702272 [pdf, other]

Title: An Investigation into the Effects of Luminosity on the Mid-Infrared Spectral Energy Distributions of Radio-Quiet Quasars

S. C. Gallagher (UCLA), G. T. Richards (Drexel), M. Lacy (SSC), D. C. Hines (SSI), M. Elitzur (Kentucky), L. J. Storrie-Lombardi (SSC)

Comments: Comments: 13 pages, 11 figures (3 color), uses emulateapj. Accepted for publication in ApJ

Journal-ref: Astrophys.J.661:30-37,2007

Subjects: Astrophysics (astro-ph)

[273] arXiv:astro-ph/0702273 [pdf, other]

Title: Discovery Of A Molecular Outflow in the Haro 6-10 Star-Forming Region

Irena Stojimirović (1), Gopal Narayanan, Ronald L. Snel (University of Massachusetts, Amherst) ((1) IAR Boston University, Boston)

Comments: ApJ Accepted; 9 pages, 8 figures. For high resolution ps file use: this http URL

Journal-ref: Astrophys.J.660:418-425,2007

Subjects: Astrophysics (astro-ph)

[274] arXiv:astro-ph/0702274 [pdf, other]

Title: Constraints on accretion in Ultraluminous X-ray Sources from Spitzer IRS observations of NGC 4485/90: Infrared diagnostic diagrams

Gerardo A. Vazquez, Ann E. Hornschemeier, Edward Colbert, Tymothy P. Roberts, Martin J. Ward, Sangeeta Malhotra

Comments: 2 Figures. ApJ Letters, accepted for publication

Journal-ref: Astrophys.J.658:L21-L24,2007

Subjects: Astrophysics (astro-ph)

[275] arXiv:astro-ph/0702275 [pdf, other]

Title: Escaping from MOND

Benoit Famaey, Jean-Philippe Bruneton, HongSheng Zhao

Comments: 4 pages, 1 figure; accepted for publication in MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc.377:L79-L82,2007

Subjects: Astrophysics (astro-ph)

[276] arXiv:astro-ph/0702276 [pdf, other]

Title: A Mass Function Constraint on Extrasolar Giant Planet Evaporation Rates

W.B Hubbard, M. Hattori, A. Burrows, I. Hubeny

Comments: accepted by Astrophys. J. Letters on 1 February 2007

Journal-ref: Astrophys.J.658:L59-L62,2007

Subjects: Astrophysics (astro-ph)

[277] arXiv:astro-ph/0702277 [pdf, other]

Title: Directionality in the WMAP Polarization Data

Duncan Hanson, Douglas Scott, Emory F. Bunn

Comments: 5 pages, modified to match version accepted by MNRAS

Subjects: Astrophysics (astro-ph)

[278] arXiv:astro-ph/0702278 [pdf, other]

Title: Stability of Cosmological Solution in f(R) Models of Gravity

Ignacy Sawicki, Wayne Hu (KICP, U. Chicago)

Comments: 4 pages, 2 figures, v2 reflects version accepted for publication in PRD: minor typos fixed and references updated

Journal-ref: Phys.Rev.D75:127502,2007

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

[279] arXiv:astro-ph/0702279 [pdf, other]

Title: The Unified Model of Active Galactic Nuclei: II. Evolutionary Connection

Jian-Min Wang (IHEP, Beijing), En-Peng Zhang (NAOC, Beijing)

Comments: ApJ, vol 661 (2007), in press

Journal-ref: Astrophys.J.660:1072-1092,2007

Subjects: Astrophysics (astro-ph)

[280] arXiv:astro-ph/0702280 [pdf, other]

Title: Temporal evolution of mottles observed in H_alpha

Z. Funda Bostanci, Nurol Al Erdogan

Comments: 4 pages, 5 figures, contribution to proceedings of Coimbra Solar Physics Meeting on The Physics of Chromospheric Plasmas, ASP Conference Series, Vol. 354, ed. P. Heinzel, I. Dorotovic, R.J. Rutten, higher resolution version can be downloaded from : this http URL

Subjects: Astrophysics (astro-ph)

[281] arXiv:astro-ph/0702281 [pdf, other]

Title: Three clusters of the SMC from ACS/WFC HST archive data: NGC 265, K~29 and NGC 290 and their fields

E. Chiosi, A. Vallenari (INAF, Osservatorio di Padova, Padova, Italy)

Comments: 20 pages. A&A accepted

Subjects: Astrophysics (astro-ph)

[282] arXiv:astro-ph/0702282 [pdf, other]

Title: An Inhomogeneous Model Universe Behaving Homogeneously

Sh. Khosravi, E. Kourkchi, R. Mansouri, Y. Akrami

Comments: 23 pages, 19 figures, published version in GRG

Journal-ref: Gen.Rel.Grav.40:1047-1069,2008

Subjects: Astrophysics (astro-ph)

[283] arXiv:astro-ph/0702283 [pdf, other]

Title: Joint H-alpha and X-Ray Observations of Massive X-Ray Binaries. III. The Be X-ray Binaries HDE 245770 = A 0535+26 and X Persei

E. D. Grundstrom, T. S. Boyajian, C. Finch, D. R. Gies, W. Huang, M. V. McSwain, D. P. O'Brien, R. L. Riddle, M. L. Trippe, S. J. Williams, D. W. Wingert, R. A. Zaballa

Comments: accepted to ApJ, 24 pages including 3 tables & 10 figures

Journal-ref: Astrophys.J.660:1398-1408,2007

Subjects: Astrophysics (astro-ph)

[284] arXiv:astro-ph/0702284 [pdf, other]

Title: Spectral indices of Galactic radio loops between 1420, 820 and 408 MHz

V. Borka

Comments: 10 pages, 5 tables, 13 figures. Accepted for publication in MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc.376:634-644,2007

Subjects: Astrophysics (astro-ph)

[285] arXiv:astro-ph/0702285 [pdf, other]

Title: Steps Toward a Common Near-Infrared Photometric System

A.T. Tokunaga W.D. Vacca

Comments: 16 pages, 3 figures, ASP conf. ser. 364

Subjects: Astrophysics (astro-ph)

[286] arXiv:astro-ph/0702286 [pdf, other]

Title: Disks around Brown Dwarfs and Cool Stars

Daniel Apai, Kevin Luhman, Michael Liu

Comments: Summary of the Cool Stars 14 Splinter Session "Disks around Brown Dwarfs and Cool Stars". 8 pages, 1 figure

Subjects: Astrophysics (astro-ph)

[287] arXiv:astro-ph/0702287 [pdf, other]

Title: Evidence for tidal interaction and merger as the origin of galaxy morphology evolution in compact groups

R. Coziol (1), I. Plauchu-Frayn (1) ((1) Depto. de Astronomia de la Univ. de Guanajuato, Mexico)

Comments: 64 pages, 35 figures. Accepted for publication in ApJ

Journal-ref: Astron.J.133:2630-2642,2007

Subjects: Astrophysics (astro-ph)

[288] arXiv:astro-ph/0702288 [pdf, other]

Title: Constraints on superdense preon stars and their formation scenarios

J.E. Horvath (IAG-USP, Sao Paulo U.)

Comments: 6 pp. 1 .eps figure, to apear in Astrophys. Space Sci

Journal-ref: Astrophys.SpaceSci.307:419-422,2007

Subjects: Astrophysics (astro-ph)

[289] arXiv:astro-ph/0702289 [pdf, other]

Title: Origin of Abundance Inhomogeneity in Globular Clusters

K. Bekki, S. W. Campbell, J. C. Lattanzio, J. E. Norris

Comments: 18 pages, 17 figures, accepted by MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc.377:335-351,2007

Subjects: Astrophysics (astro-ph)

[290] arXiv:astro-ph/0702290 [pdf, other]

Title: Galaxy Rotation Curves from String Theory

Yeuk-Kwan E. Cheung, Konstantin Savvidy, Hsien-Chung Kao

Comments: 15 pages, 1 table, 3 figures,1 appendix, LaTex in JHEP style

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

[291] arXiv:astro-ph/0702291 [pdf, other]

Title: Numerical demonstration of fluctuation dynamo at low magnetic Prandtl numbers

A. B. Iskakov (UCLA), A. A. Schekochihin (Imperial), S. C. Cowley (UCLA), J. C. McWilliams (UCLA), M. R. E. Proctor (Cambridge)

Comments: revtex, 4 pages, 4 figures; final published version: minor edits, slightly improved numerical results

Journal-ref: Phys.Rev.Lett.98:208501,2007

Subjects: Astrophysics (astro-ph)

[292] arXiv:astro-ph/0702292 [pdf, other]

Title: Low-Luminosity Active Galactic Nuclei: Are They UV-Faint and Radio Loud?

Dan Maoz

Comments: MNRAS, in press

Journal-ref: Mon.Not.Roy.Astron.Soc.377:1696-1710,2007

Subjects: Astrophysics (astro-ph)

[293] arXiv:astro-ph/0702293 [pdf, other]

Title: Ellipsoidal Universe Induces Large Scale CMB Polarization

Paolo Cea

Comments: revised version, 9 pages

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

[294] arXiv:astro-ph/0702294 [pdf, other]

Title: A simple beam combination for stellar interferometry

E. N. Ribak, M. Gai, D. Loreggia, S. G. Lipson

Comments: 3 pages

Subjects: Astrophysics (astro-ph)

[295] arXiv:astro-ph/0702295 [pdf, other]

Title: Statistical Estimates of Coordinate Error Circles for LAT-detected GRBs

Carl W. Akerlof, Fang Yuan

Comments: 4 pages, 8 figures, poster paper presented at the First GLAST Symposium, February 5-8, 2007, two typos corrected

Subjects: Astrophysics (astro-ph)

[296] arXiv:astro-ph/0702296 [pdf, other]

Title: A Debris Disk around the Central Star of the Helix Nebula?

Kate Y. L. Su (1), Y.-H. Chu (2), G. H. Rieke (1), P. J. Huggins (3), R. Gruendl (2), R. Napiwotzki (4), T. Rauch (5), W. B. Latter (6), K. Volk (7) ((1) Univ. of Arizona, (2) UIUC, (3) New York Univ, (4) Univ. of Hertfordshire, UK, (5) Univ. of Tubingen, Germany, (6) Hersche Science Center, (7) Gemini Obs.)

Comments: emulateapj format, accepted for publication in ApJ Letters

Journal-ref: Astrophys.J.657:L41-L46,2007

Subjects: Astrophysics (astro-ph)

[297] arXiv:astro-ph/0702297 [pdf, other]

Title: New abundance determinations in z < 1.5 QSO absorbers: seven sub-DLAs and one DLA

Joseph D. Meiring (1), James T. Lauroesch (2), Varsha P. Kulkarni (1), Celine Peroux (3), Pushpa Khare (4), Donald G. York (5), Arlin P.S. Crotts (6) ((1) University of South Carolina, (2) University of Louisville, (3) ESO, (4) Utkal University, (5) University of Chicago, (6) Columbia University)

Comments: 15 pages, 15 Figures, Accepted by MNRAS, updated references and authors

Journal-ref: Mon.Not.Roy.Astron.Soc.376:557-572,2007

Subjects: Astrophysics (astro-ph)

[298] arXiv:astro-ph/0702298 [pdf, other]

Title: Missing Pages in Our Photo Album of the Infant Universe

Abraham Loeb (Harvard)

Comments: Popular level review, to appear in "Physica Plus" magazine, Vol. 8; a modified version with original artwork appeared in Scientific American, 295, 46, 2006 (see this http URL)

Subjects: Astrophysics (astro-ph); High Energy Physics - Phenomenology (hep-ph); Physics Education (physics.ed-ph); Physics and Society (physics.soc-ph)

[299] arXiv:astro-ph/0702299 [pdf, other]

Title: The observable Metal-enrichment of Radiation-driven+Wind-blown HII Regions in the Wolf-Rayet Stage

Gerhard Hensler (1), Danica Kroeger (2), Tim Freyer (2) ((1) I of Astronomy, U of Vienna, (2) I of Theor. Physics and Astrophys., U of Kiel)

Comments: 4 pages, 2 figure, to appear in conference proceed. ''The Metal Rich Universe'', La Palma, June 2006, Eds. G. Israelian & G. Meynet, Cambridge University Press

Subjects: Astrophysics (astro-ph)

[300] arXiv:astro-ph/0702300 [pdf, other]

Title: Riemannian isometries of twisted magnetic flux tubes and stable current-carrying solar loops

Garcia de Andrade

Comments: Departamento de Fisica Teorica-IF-UERJ-Rio-Brasil. submitted to physics of plasmas

Subjects: Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc); Plasma Physics (physics.plasm-ph)