Astrophysics

Authors and titles for December 2005

[601] arXiv:astro-ph/0512601 [pdf, other]

Title: Proper-Motion Measurements of the Cygnus Egg Nebula

Toshiya Ueta (USRA SOFIA/NASA Ames Research Center), Koji Murakawa (Max-Planck Institute for Radio Astronomy), Margaret Meixner (STScI)

Comments: To appear in ApJ in April 2006. 11 ApJ emulated pages including 2 tables and 4 figures

Journal-ref: Astrophys.J.641:1113-1121,2006

Subjects: Astrophysics (astro-ph)

[602] arXiv:astro-ph/0512602 [pdf, other]

Title: Quiescent times in Gamma-Ray-Bursts: hints of a dormant inner engine

Alessandro Drago (Ferrara U. & INFN sez. Ferrara), Giuseppe Pagliara (Torino Politecnico & INFN sez. Ferrara)

Comments: 17 pages, 7 figures. New version after referee's comments. Two figures added

Journal-ref: Astrophys.J.665:1227-1234,2007

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

[603] arXiv:astro-ph/0512603 [pdf, other]

Title: $^{187}$Re(\gamm,n) cross section close to and above the neutron threshold

S. Müller, A. Kretschmer, K. Sonnabend, A. Zilges, D. Galaviz

Comments: Phys. Rev. C, in press

Journal-ref: Phys.Rev.C73:025804,2006

Subjects: Astrophysics (astro-ph)

[604] arXiv:astro-ph/0512604 [pdf, other]

Title: Simulation of a Hybrid Optical/Radio/Acoustic Extension to IceCube for EeV Neutrino Detection

D. Besson, S. Böser, R. Nahnhauer, P. B. Price, J. A. Vandenbroucke (for the IceCube Collaboration)

Comments: 4 pages, 2 figures; to appear in the Proceedings of the 29th ICRC, Pune, India

Journal-ref: Int.J.Mod.Phys.A21S1:259-264,2006

Subjects: Astrophysics (astro-ph)

[605] arXiv:astro-ph/0512605 [pdf, other]

Title: Structured FRW universe leads to acceleration: a non-perturbative approach

Reza Mansouri

Comments: new material added, such as off-center case and the exact backreaction calculations

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

[606] arXiv:astro-ph/0512606 [pdf, other]

Title: Monte Carlo simulations of star clusters -- III. A million body star cluster

Mirek Giersz

Comments: 12 pages, 11 figures

Journal-ref: Mon.Not.Roy.Astron.Soc.371:484-494,2006

Subjects: Astrophysics (astro-ph)

[607] arXiv:astro-ph/0512607 [pdf, other]

Title: Bulk Motions of Spiral Galaxies in the z = 0.03 Volume

Yu.N.Kudrya, V.E.Karachentseva, I.D.Karachentsev, S.N.Mitronova, W.K.Huchtmeier

Comments: 15 pages, 6 figures

Journal-ref: Astron.Lett.32:73-83,2006

Subjects: Astrophysics (astro-ph)

[608] arXiv:astro-ph/0512608 [pdf, other]

Title: The origin and evolution of cluster magnetism

A. Shukurov (Newcastle), K. Subramanian (IUCAA), N. E. L. Haugen (Trondheim)

Comments: 4 pages, 1 figure, to be published by Astronomische Nachrichten (proceedings of "The Origin and Evolution of Cosmic Magnetism", 29 August - 2 September 2005, Bologna, Italy); version updated to match the accepted text

Journal-ref: Astron.Nachr.327:583-586,2006

Subjects: Astrophysics (astro-ph)

[609] arXiv:astro-ph/0512609 [pdf, other]

Title: Estimate black hole masses of AGNs using ultraviolet emission line properties

Min-Zhi Kong, Xue-Bing Wu, Ran Wang, Jin-Lin Han

Comments: 19 pages, 10 figures

Journal-ref: Chin.J.Astron.Astrophys.6:396-410,2006

Subjects: Astrophysics (astro-ph)

[610] arXiv:astro-ph/0512610 [pdf, other]

Title: Physical and chemical structure of dense cores in regions of high mass star formation

Igor Zinchenko, Lev Pirogov, Paola Caselli, Lars E.B. Johansson, Sergey Malafeev, Barry Turner

Comments: 6 pages, 4 figures, to be published in "Massive star birth: A crossroads of Astrophysics", IAU Symposium Proceedings of the international Astronomical Union 227, Held 16-20 May, Italy, edited by Cesaroni, R.; Felli, M.; Churchwell, E.; Walmsley, M. Cambridge: Cambridge University Press, 2005

Subjects: Astrophysics (astro-ph)

[611] arXiv:astro-ph/0512611 [pdf, other]

Title: Phase-Space Distributions of Chemical Abundances in Milky Way-type Galaxy Halos

Andreea S. Font (1), Kathryn V. Johnston (1), James S. Bullock (2), Brant E. Robertson (3) ((1) Wesleyan University; (2) University of California, Irvine; (3) Harvard/CfA)

Comments: submitted to ApJ. High res figures can be found at: this http URL

Journal-ref: Astrophys.J.646:886-898,2006

Subjects: Astrophysics (astro-ph)

[612] arXiv:astro-ph/0512612 [pdf, other]

Title: Flat Cosmology with Coupled Matter and Dark Energies

A.-M.M. Abdel-Rahman, Ihab F. Riad, (Department of Physics, Faculty of Science, University of Khartoum, Khartoum, Sudan)

Comments: Version to appear in The Astronomical Journal, with a modified name- Flat Cosmology with Coupled Matter and Dark Energies. Expanded and Modified content

Journal-ref: Astron.J.134:1391-1402,2007

Subjects: Astrophysics (astro-ph)

[613] arXiv:astro-ph/0512613 [pdf, other]

Title: A Deep Radio Survey of Abell 2125 III: The Cluster Core - Merging and Stripping

F. N. Owen (NRAO), W. C. Keel (Alabama), Q. D. Wang (UMass), M. J. Ledlow (Gemini), G.E. Morrison (NOAO)

Comments: 36 pages, 16 figures, accepted AJ, paper with full resolution figures is available at http:www.aoc.nrao.edu/~fowen/papers/a2125/a2125paper3.ps.gz

Journal-ref: Astron.J.131:1974-1988,2006

Subjects: Astrophysics (astro-ph)

[614] arXiv:astro-ph/0512614 [pdf, other]

Title: The Possibility of Curved Spacetime, Black Holes, and Big Bang is Less than One Billionth

Jin He

Comments: The Explanation to `Accelerating Expansion` is Corrected

Subjects: Astrophysics (astro-ph)

[615] arXiv:astro-ph/0512615 [pdf, other]

Title: The Giant X-ray Flare of GRB 050502B: Evidence for Late-Time Internal Engine Activity

A. D. Falcone, D. N. Burrows, D. Lazzati, S. Campana, S. Kobayashi, B. Zhang, P. Meszaros, K. L. Page, J. A. Kennea, P. Romano, C. Pagani, L. Angelini, A. P. Beardmore, M. Capalbi, G. Chincarini, G. Cusumano, P. Giommi, M. R. Goad, O. Godet, D. Grupe, J. E. Hill, V. La Parola, V. Mangano, A. Moretti, J. A. Nousek, P. T. O'Brien, J. P. Osborne, M. Perri, G. Tagliaferri, A. A. Wells, N. Gehrels

Comments: accepted for publication in ApJ

Journal-ref: Astrophys.J.641:1010-1017,2006

Subjects: Astrophysics (astro-ph)

[616] arXiv:astro-ph/0512616 [pdf, other]

Title: CCS and NH3 emission associated with low-mass young stellar objects

I. de Gregorio-Monsalvo, J.F. Gomez, O. Suarez, T.B.H. Kuiper, L.F. Rodriguez, E. Jimenez-Bailon

Comments: 28 pages, 1 figure, 3 tables, to appear in the 2006 May 1 issue of the Astrophysical Journal

Journal-ref: Astrophys.J.642:319-329,2006

Subjects: Astrophysics (astro-ph)

[617] arXiv:astro-ph/0512617 [pdf, other]

Title: 3D Spectroscopy of Herbig-Haro objects

R. Lopez (1), S.F. Sanchez (2), B. Garcia-Lorenzo (3), R. Estalella (1), G. Gomez (3), A. Riera (4), K. Exter (3) (1)Departament d'Astronomia i Meteorologia (<a href="http://U.Barcelona" rel="external noopener nofollow" class="link-external link-http">this http URL</a>), (2) (CAHA), (3) (IAC), (4) (UPC)

Comments: 3 pages, 2 figures To appear in Sciences Perspectives for 3D Spectroscopy. ESO Astrophysics Symposia. Ed by this http URL-Patig, M.M. Roth and J.R. Walsh

Subjects: Astrophysics (astro-ph)

[618] arXiv:astro-ph/0512618 [pdf, other]

Title: Mid-infrared properties of X-ray sources in the Extended Groth Strip

P. Barmby, A. Alonso-Herrero, J.L. Donley, E. Egami, G.G. Fazio, A. Georgakakis, J.-S. Huang, E.S. Laird, S. Miyazaki, K. Nandra, S.Q. Park, P.G. Perez-Gonzalez, G.H. Rieke, J.R. Rigby, S.P. Willner

Comments: Replaced to correct minor error in Figure 3 axis label and typo in author list. ApJ, in press; 40 pages, 12 figures

Journal-ref: Astrophys.J.642:126-139,2006

Subjects: Astrophysics (astro-ph)

[619] arXiv:astro-ph/0512619 [pdf, other]

Title: Observations of H-alpha, iron, and oxygen lines in B, Be, and shell stars

S. M. Saad, J. Kubat, D. Korcakova, P. Koubsky, P. Skoda, M. Slechta, A. Kawka, A. Budovicova, V. Votruba, L. Sarounova, M. I. Nouh

Comments: 23 pages, 45 figures; accepted in Astronomy & Astrophysics

Subjects: Astrophysics (astro-ph)

[620] arXiv:astro-ph/0512620 [pdf, other]

Title: Assisted stellar suicide in V617 Sgr

J. E. Steiner (IAG-USP), A. S. Oliveira (SOAR Telescope), D. Cieslinski (INPE), T. V. Ricci (IAG-USP)

Comments: 4 pages, accepted for publication in A&A Letters

Subjects: Astrophysics (astro-ph)

[621] arXiv:astro-ph/0512621 [pdf, other]

Title: Astrometric Monitoring of Stellar Orbits at the Galactic Center with a Next Generation Large Telescope

Nevin N. Weinberg (1, 2), Milos Milosavljevic (1), Andrea M. Ghez (3) ((1) Caltech, (2) KITP, (3) UCLA)

Comments: 8 pages, 3 figures. ASP Conf. Series "Astrometry in the Age of the Next Generation of Large Telescopes", 2005, v.338, eds. P. Kenneth Seidelmann and Alice K. B. Monet; references added/updated

Journal-ref: ASP Conf. Proc. 338 (2005) 252

Subjects: Astrophysics (astro-ph)

[622] arXiv:astro-ph/0512622 [pdf, other]

Title: "Expansion" around the vacuum: how far can we go from Lambda?

J.S. Alcaniz (Rio de Janeiro), H. Stefancic (Barcelona)

Comments: 7 pages, 4 figures. Accepted for publication in Astronomy & Astrophysics

Journal-ref: Astron.Astrophys. 462 (2007) 443-448

Subjects: Astrophysics (astro-ph)

[623] arXiv:astro-ph/0512623 [pdf, other]

Title: A MMT/Hectospec Redshift Survey of 24 Micron Sources in the Spitzer First Look Survey

Casey Papovich (1), Richard Cool (1), Daniel Eisenstein (1), Emeric Le Floc'h (1), Xiaohui Fan (1), Robert C. Kennicutt Jr. (1), J.-D. T. Smith (1), G. H. Rieke (1), Marianne Vestergaard (1), ((1) Steward Observatory, University of Arizona)

Comments: Accepted for publication in the Astronomical Journal, AASTEX format, 23 pages, 7 figures (some in color). This replacement is the accepted version, and includes minor changes from previous version. Data tables and spectra available at this http URL or at this http URL

Journal-ref: Astron.J.132:231-241,2006

Subjects: Astrophysics (astro-ph)

[624] arXiv:astro-ph/0512624 [pdf, other]

Title: X-ray flare modeling in the single giant HR 9024

Paola Testa (MIT), David Garcia-Alvarez (SAO), Fabio Reale (Univ. Palermo), David Huenemoerder (MIT)

Comments: 2 pages, 4 figures. To be included in the proceedings of the 'X-ray universe 2005 meeting' held in San Lorenzo de El Escorial (Spain), 26-30 Sep 2005

Subjects: Astrophysics (astro-ph)

[625] arXiv:astro-ph/0512625 [pdf, other]

Title: Flares of Sagittarius a* at Millimeter Wavelengths

Atsushi Miyazaki, Takahiro Tsutsumi, Makoto Miyoshi, Masato Tsuboi, Zhi-Qiang Shen

Comments: 4 pages. Presented at the XXVIIIth Geleral Assembly of the URSI, Oct 2005, India

Subjects: Astrophysics (astro-ph)

[626] arXiv:astro-ph/0512626 [pdf, other]

Title: The early reionization with the primordial magnetic fields

Hiroyuki Tashiro, Naoshi Sugiyama

Comments: 8 pages, 5 figures. accepted for publication in MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc.368:965-970,2006

Subjects: Astrophysics (astro-ph)

[627] arXiv:astro-ph/0512627 [pdf, other]

Title: INTEGRAL detection of hard X-rays from NGC 6334: Nonthermal emission from colliding winds or an AGN?

A.M.Bykov, A.M.Krassilchtchikov, Yu.A.Uvarov, F.Lebrun, M.Renaud, R.Terrier, H.Bloemen, B.McBreen, T.J.-L.Courvoisier, M.Yu.Gustov, W.Hermsen, J.-C.Leyder, T.A.Lozinskaya, G.Rauw, J.-P. Swings

Comments: 8 pages, 8 figures, Astronomy and Astrophysics (in press)

Journal-ref: Astron.Astrophys. 449 (2006) 917-923

Subjects: Astrophysics (astro-ph)

[628] arXiv:astro-ph/0512628 [pdf, other]

Title: Multiwavelength Observations of the Blazar Mrk 421 in December 2002 and January 2003

P. Rebillot (for the VERITAS Collaboration), M. Aller, H. Aller, P. Boltwood, I. Jung, D. Kranich, A. Sillanpaa, A. Sadun

Comments: Accepted for publication in the Astrophysical Journal

Journal-ref: Astrophys.J.641:740-751,2006

Subjects: Astrophysics (astro-ph)

[629] arXiv:astro-ph/0512629 [pdf, other]

Title: Nonlinear Criterion for the Stability of Molecular Clouds

Ruben Krasnopolsky, Charles F. Gammie

Comments: 11 pages, 5 figures

Journal-ref: Astrophys.J.635:1126-1135,2005

Subjects: Astrophysics (astro-ph)

[630] arXiv:astro-ph/0512630 [pdf, other]

Title: Detection with RHESSI of high frequency X-ray oscillations in the tail of the 2004 hyperflare from SGR 1806-20

Anna L Watts, Tod E Strohmayer

Comments: 5 pages, 5 figures using emulateapj. Corrected minor typo that appeared in journal version

Journal-ref: Astrophys.J.637:L117-L120,2006

Subjects: Astrophysics (astro-ph)

[631] arXiv:astro-ph/0512631 [pdf, other]

Title: Linear Cosmological Structure Limits on Warm Dark Matter

Kevork Abazajian (LANL)

Comments: 6 pages, 4 figures; v2: matches PRD version, with note added regarding astro-ph/0602430

Journal-ref: Phys.Rev. D73 (2006) 063513

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

[632] arXiv:astro-ph/0512632 [pdf, other]

Title: On the Relation Between Hot Jupiters & the Roche Limit

Eric B. Ford (UC Berkeley), Frederic A. Rasio (Northwestern)

Comments: 10 pages, 3 figures, to appear in ApJL

Journal-ref: Astrophys.J.638:L45-L48,2006

Subjects: Astrophysics (astro-ph)

[633] arXiv:astro-ph/0512633 [pdf, other]

Title: Observational confirmation of the Sun's CNO cycle

Michael Mozina, Hilton Ratcliffe, O. Manuel

Comments: 9 pages, 21 references, 2 figures show x-rays and gamma-rays from nuclear reactions in a solar-flare-induced electrical discharge. Replaced to show publication details

Journal-ref: Journal of Fusion Energy, volume 25 (2006) pages 107-114

Subjects: Astrophysics (astro-ph)

[634] arXiv:astro-ph/0512634 [pdf, other]

Title: Improving the Efficiency of Markov Chain Monte Carlo for Analyzing the Orbits of Extrasolar Planets

Eric B. Ford (UC Berkeley, Princeton)

Comments: 46 pages, 5 figures, 2 tables, ApJ in press

Journal-ref: Astrophys.J.642:505-522,2006

Subjects: Astrophysics (astro-ph)

[635] arXiv:astro-ph/0512635 [pdf, other]

Title: What do Multiple Planet Systems Teach us about Planet Formation?

Eric B. Ford

Comments: 12 pages, to appear in Frank N. Bash Symposium 2005: New Horizons in Astronomy

Subjects: Astrophysics (astro-ph)

[636] arXiv:astro-ph/0512636 [pdf, other]

Title: Newtonian versus relativistic nonlinear cosmology

Jai-chan Hwang, Hyerim Noh

Comments: 8 pages, no figure

Journal-ref: Gen.Rel.Grav.38:703-710,2006

Subjects: Astrophysics (astro-ph)

[637] arXiv:astro-ph/0512637 [pdf, other]

Title: Location of the solar dynamo and near-surface shear

Axel Brandenburg (Nordita)

Comments: 6 pages, 3 figures, in Solar MHD: Theory and Observations, eds: J. W. Leibacher, H. Uitenbroek, & R. F. Stein, Astron. Soc. Pac. Conf. Ser

Journal-ref: ASPConf.Ser.354:121-126,2006

Subjects: Astrophysics (astro-ph)

[638] arXiv:astro-ph/0512638 [pdf, other]

Title: Distributed versus tachocline dynamos

Axel Brandenburg (Nordita)

Comments: 4 pages, 2 figures, in Solar activity: exploration, understanding and prediction, ed: H. Lundstedt, ESA, ESTEC Noordwijk

Subjects: Astrophysics (astro-ph)

[639] arXiv:astro-ph/0512639 [pdf, other]

Title: Connection between active longitudes and magnetic helicity

A. Brandenburg (Nordita), P. J. Käpylä (KIS and Oulu)

Comments: 6 pages, 5 figures, in Solar activity: exploration, understanding and prediction, ed: H. Lundstedt, ESA, ESTEC Noordwijk

Subjects: Astrophysics (astro-ph)

[640] arXiv:astro-ph/0512640 [pdf, other]

Title: The relation between circular velocity and central velocity dispersion in low surface brightness galaxies

E. M. Corsini (1), A. Pizzella (1), E. Dalla Bonta` (1), F. Bertola (1), L. Coccato (2), M. Sarzi (3) ((1) Universita` di Padova, (2) Kapteyn Astronomical Institute, (3) University of Oxford)

Comments: 6 pages and 1 figure. To appear in the proceedings of the "Island Universes: Structure and Evolution of Disk Galaxies" conference held in Terschelling, Netherlands, July 2005, ed. R. de Jong (Springer: Dordrecht)

Subjects: Astrophysics (astro-ph)

[641] arXiv:astro-ph/0512641 [pdf, other]

Title: Analytic Results for a Flat Universe Dominated by Dust and Dark Energy

A.Gruppuso, F.Finelli

Comments: 6 pages,6 figures. One reference added, minor changes to match version published in Physical Review D

Journal-ref: Phys.Rev.D73:023512,2006

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

[642] arXiv:astro-ph/0512642 [pdf, other]

Title: Massive Black Hole Binaries from Collisional Runaways

M. Atakan Gürkan, John M. Fregeau, Frederic A. Rasio (Northwestern University)

Comments: 4 pages with emulateapj. To appear in ApJ letters. Minor revisions to include the changes suggested by the referee

Journal-ref: Astrophys.J.640:L39-L42,2006

Subjects: Astrophysics (astro-ph)

[643] arXiv:astro-ph/0512643 [pdf, other]

Title: G359.95-0.04: Pulsar Candidate Near Sgr A*

Q. D. Wang (UMass/IAS), F. J. Lu (UMass/IHEP), E. V. Gotthelf (Columbia U.)

Comments: 11 pages, accepted for publication in MNRAS, higher resolution version at this http URL

Journal-ref: Mon.Not.Roy.Astron.Soc.367:937-944,2006

Subjects: Astrophysics (astro-ph)

[644] arXiv:astro-ph/0512644 [pdf, other]

Title: Testing a new analytic model for gravitational lensing probabilities

Sudeep Das, Jeremiah P. Ostriker

Comments: Accepted for publication in ApJ, 13 pages, 12 figures, revised version, references added, section 6 expanded

Journal-ref: Astrophys.J.645:1-16,2006

Subjects: Astrophysics (astro-ph)

[645] arXiv:astro-ph/0512645 [pdf, other]

Title: The soft X-ray properties of quasars in the Sloan Digital Sky Survey

Shiyin Shen, Simon D.M. White, H.J. Mo, Wolfgang Voges, Guinevere Kauffmann, Christy Tremonti, Scott F. Anderson

Comments: 16 pages, 15 figures, 3 tables, replaced with final version accepted by MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc.369:1639-1653,2006

Subjects: Astrophysics (astro-ph)

[646] arXiv:astro-ph/0512646 [pdf, other]

Title: Short-living supermassive magnetar model for the early X-ray flares following short GRBs

W. H. Gao, Y. Z. Fan

Comments: The final version. Possible mechanisms giving rise to multiple flares in the magnetar wind model have been discussed

Journal-ref: Chin. J. Astron. Astrophys.6:513-516, 2006

Subjects: Astrophysics (astro-ph)

[647] arXiv:astro-ph/0512647 [pdf, other]

Title: Morphology and Evolution of Simulated and Optical Clusters: A Comparative Analysis

Nurur Rahman (1), Janusz Krywult (2), Patrick M. Motl (3), Piotr Flin (2), Sergei F. Shandarin (1) (1 University of Kansas, Kansas, USA; 2 Pedagogical University, Kielce, Poland; 3 Louisiana State University, Louisiana, USA)

Comments: Accepted for publication in MNRAS, 2006; 15 pages, 13 postscript figures

Journal-ref: Mon.Not.Roy.Astron.Soc.367:838-850,2006

Subjects: Astrophysics (astro-ph)

[648] arXiv:astro-ph/0512648 [pdf, other]

Title: Direct Detection of Intermediate Mass Compact Objects via Submillilensing

Kaiki Taro Inoue, Masashi Chiba

Comments: 4 pages, 1 eps file, to appear in Science and Technology (Kinki University Press), 2006

Journal-ref: Annual reports by Research Institute for Science and Technology, (2006) 18, p.11-14

Subjects: Astrophysics (astro-ph); Astrophysics of Galaxies (astro-ph.GA)

[649] arXiv:astro-ph/0512649 [pdf, other]

Title: Gamma Ray Bursts as cosmological tools

G. Ghirlanda (1), G. Ghisellini (1), L. Nava (1,2), C. Firmani (1,3) ((1)Osservatorio Astronomico di Brera, (2)Universita Milano Bicocca, (3)Instituto de Astronomia U.N.A.M.)

Comments: 6 pages, 3 figures, Proceedings of the workshop 'Astrophysical sources of high energy particles and radiation', Torun - Poland 20-24 June 2005, Ed. T. Bulik, B. Rudak, G. Madejski

Journal-ref: AIP Conf.Proc.801:123-128,2006

Subjects: Astrophysics (astro-ph)

[650] arXiv:astro-ph/0512650 [pdf, other]

Title: NGC 6791: an exotic open cluster or the nucleus of a tidally disrupted galaxy?

Giovanni Carraro (UChile/Yale), Sandro Villanova (Padova), Pierre Demarque (Yale), M. Virginia McSwain (Yale), Giampaolo Piotto (Padova), Luigi R. Bedin (ESO)

Comments: 29 pages, 10 eps figure, accepted for publication in the Astrophysical Journal

Journal-ref: Astrophys.J.643:1151-1159,2006

Subjects: Astrophysics (astro-ph)