Astrophysics

Authors and titles for June 2007

[351] arXiv:0706.1939 [pdf, other]

Title: 3-He in the Milky Way Interstellar Medium: Ionization Structure

T. M. Bania, Dana S. Balser, Robert T. Rood, T. L. Wilson, Jennifer M. LaRocque

Comments: 36 pages, 4 figures To appear Astrophysical Journal, 20 August 2007, vol 665, no 2

Journal-ref: Astrophys.J.664:915-927,2007

Subjects: Astrophysics (astro-ph)

[352] arXiv:0706.1944 [pdf, other]

Title: On the nature of optical nuclei in FR I radio-galaxies from ACS/HST imaging polarimetry

Alessandro Capetti (1), David J. Axon (2), Marco Chiaberge (3), William B. Sparks (3), F. Duccio Macchetto (3,4), Misty Cracraft (3), Annalisa Celotti (5) ((1) INAF - Osservatorio Astronomico di Torino, Italy (2) Rochester Institute of Technology, USA (3) Space Telescope Science Institute, USA (4) Affiliated with ESA's Research & Space Science Department, (5) SISSA/ISAS, Italy)

Comments: 16 page, 10 figures, accepted for publication in A&A

Subjects: Astrophysics (astro-ph)

[353] arXiv:0706.1945 [pdf, other]

Title: Non-circular motion evidences in the circumnuclear region of M100 (NGC 4321)

A. Castillo-Morales (1), J. Jimenez-Vicente (2), E. Mediavilla (3), E. Battaner (2) ((1) Universidad Complutense Madrid, Spain, (2) Universidad de Granada, Spain, (3) Instituto de Astrofisica de Canarias, Spain)

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

Subjects: Astrophysics (astro-ph)

[354] arXiv:0706.1959 [pdf, other]

Title: The Black Hole Mass of Abell 1836-BCG and Abell 3565-BCG

E. Dalla Bonta' (1,2), L. Ferrarese (2), E. M. Corsini (1), J. Miralda-Escude (3), L. Coccato (4), A. Pizzella (1) ((1) Padua University, Italy, (2) Herzberg Institute of Astrophysics, Canada, (3) Institut de Ciencies de l'Espai (CSIC-IEEC)/ICREA, Spain, (4) Max-Planck-Institut fuer extraterrestrische Physik, Germany)

Comments: 4 pages, 3 figures, Mem SAIt in press, Proceedings of the 51st Annual Meeting of the Italian Astronomical Society, Florence, April 17-20, 2007

Subjects: Astrophysics (astro-ph)

[355] arXiv:0706.1962 [pdf, other]

Title: Dynamical and Observational Constraints on Additional Planets in Highly Eccentric Planetary Systems

Robert A. Wittenmyer, Michael Endl, William D. Cochran, Harold F. Levison

Comments: Accepted for publication in AJ

Journal-ref: Astron.J.134:1276-1284,2007

Subjects: Astrophysics (astro-ph)

[356] arXiv:0706.1963 [pdf, other]

Title: Galaxy Cluster Gas Mass Fraction and Hubble Parameter versus Redshift Constraints on Dark Energy

Lado Samushia, Gang Chen, Bharat Ratra

Comments: 11 pages, 3 figures

Subjects: Astrophysics (astro-ph)

[357] arXiv:0706.1965 [pdf, other]

Title: SDSS J080531.84+481233.0: An Unresolved L Dwarf/T Dwarf Binary

Adam J. Burgasser (MIT)

Comments: 11 pages, 4 figures, accepted by AJ

Journal-ref: Astron.J.134:1330-1336,2007

Subjects: Astrophysics (astro-ph)

[358] arXiv:0706.1967 [pdf, other]

Title: Chemical evolution of the Small Magellanic Cloud based on planetary nebulae

T. P. Idiart, W. J. Maciel, R. D. D. Costa

Comments: 11 pages, 6 figures, accepted for publication in Astronomy and Astrophysics

Subjects: Astrophysics (astro-ph)

[359] arXiv:0706.1975 [pdf, other]

Title: Proper Motions in the Galactic Bulge: Plaut's Window

Katherine Vieira, Dana I. Casetti-Dinescu, Rene A. Mendez, R. Michael Rich, Terrence M. Girard, Vladimir I. Korchagin, William van Altena, Steven R. Majewski, Sidney van den Bergh

Comments: Submitted to AJ April 17th 2007. Accepted June 8th 2007. 45 pages, 14 figures

Journal-ref: Astron.J.134:1432-1446,2007

Subjects: Astrophysics (astro-ph)

[360] arXiv:0706.1976 [pdf, other]

Title: Tidal dwarf galaxies as a test of fundamental physics

G. Gentile, B. Famaey, F. Combes, P. Kroupa, H. S. Zhao, O. Tiret

Comments: Accepted for publication in A&A Letters, 5 pages, 3 figures

Journal-ref: Astron.Astrophys. 472 (2007) L25-L28

Subjects: Astrophysics (astro-ph)

[361] arXiv:0706.1977 [pdf, other]

Title: Challenging the Cosmological Constant

Nemanja Kaloper

Comments: 13 pages, 1 .eps figure, added references and comments

Journal-ref: Phys.Lett.B653:109-115,2007

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

[362] arXiv:0706.1982 [pdf, other]

Title: Limits on primordial power spectrum resolution: An inflationary flow analysis

Brian A. Powell, William H. Kinney

Comments: 10 pages, 4 figures. The flow code used in this paper is available at this http URL. References added, version accepted by JCAP

Journal-ref: JCAP 0708:006,2007

Subjects: Astrophysics (astro-ph)

[363] arXiv:0706.1987 [pdf, other]

Title: Dynamics of the solar chromosphere. V. High-frequency modulation in ultraviolet image sequences from TRACE

A. G. de Wijn, R. J. Rutten, T. D. Tarbell

Comments: 9 pages, 8 figures

Journal-ref: Astron.Astrophys.430:1119-1127,2005

Subjects: Astrophysics (astro-ph)

[364] arXiv:0706.1990 [pdf, other]

Title: Applying Extensive Air Shower Universality to Ground Detector Data

Fabian Schmidt, Maximo Ave, Lorenzo Cazon, Aaron Chou

Comments: Proceedings of the 30th International Cosmic Ray Conference, Merida, Mexico; 4 pages, 4 figures

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

[365] arXiv:0706.1995 [pdf, other]

Title: The Leo Elliptical NGC 3379: A Metal-Poor Halo Emerges

W.E.Harris, G.L.H.Harris, A.C.Layden, E.H.Wehner

Comments: 48 pages, 15 figures. Complete preprint file available at this http URL. to be published in Ap.J. 667, Oct 1 (2007)

Journal-ref: Astrophys.J.666:903-918,2007

Subjects: Astrophysics (astro-ph)

[366] arXiv:0706.1997 [pdf, other]

Title: HST Photometry for the Halo Stars in the Leo Elliptical NGC 3377

W.E.Harris, G.L.H.Harris, A.C.Layden, P.B.Stetson

Comments: 40 pages, 17 figures

Journal-ref: Astron.J.134:43-55,2007

Subjects: Astrophysics (astro-ph)

[367] arXiv:0706.2003 [pdf, other]

Title: Numerical Measurements of the Spectrum in Magnetohydrodynamic Turbulence

Joanne Mason, Fausto Cattaneo, Stanislav Boldyrev

Comments: 4 pages, 2 figures

Journal-ref: Phys.Rev.E77:036403,2008

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

[368] arXiv:0706.2006 [pdf, other]

Title: The Nature of the Far-UV Break in the Energy Distribution of Quasars

L. Binette, S. Haro-Corzo, Y. Krongold, A.C. Andersen

Comments: 5 pages,7 figures, to appear in proceedings of the Huatulco meeting on AGN, RevMex, eds E. Benitez, I. Cruz-Gonzalez & Y. Krongold

Subjects: Astrophysics (astro-ph)

[369] arXiv:0706.2008 [pdf, other]

Title: DOT tomography of the solar atmosphere. IV. Magnetic patches in internetwork areas

A. G. de Wijn, R. J. Rutten, E. M. W. P. Haverkamp, P. Sütterlin

Comments: 8 pages, 6 figures

Journal-ref: Astron.Astrophys.441:1183-1190,2005

Subjects: Astrophysics (astro-ph)

[370] arXiv:0706.2009 [pdf, other]

Title: Satellite Galaxies and Fossil Groups in the Millennium Simulation

L. V. Sales, J. F. Navarro, D. G. Lambas, S. D. M. White, D. J. Croton

Comments: 18 pages, 14 figures, MNRAS in press. Accepted version with minor changes. Version with high resolution figures available at: this http URL

Subjects: Astrophysics (astro-ph)

[371] arXiv:0706.2011 [pdf, other]

Title: Dynamic fibrils in H-alpha and C IV

A. G. de Wijn, B. De Pontieu

Comments: 8 pages, 8 figures

Journal-ref: Astron.Astrophys.460:309-316,2006

Subjects: Astrophysics (astro-ph)

[372] arXiv:0706.2014 [pdf, other]

Title: Fourier analysis of active-region plage

A. G. de Wijn, B. De Pontieu, R. J. Rutten

Comments: 14 pages, 6 figures

Journal-ref: Astrophys.J.654:1128-1134,2007

Subjects: Astrophysics (astro-ph)

[373] arXiv:0706.2016 [pdf, other]

Title: Observations of Water Masers in the NGC 1333 IRAS 4 Region

Geumsook Park, Minho Choi

Comments: 8 pages, 5 figures

Subjects: Astrophysics (astro-ph)

[374] arXiv:0706.2022 [pdf, other]

Title: The Unusual Spectrum of Comet 96P/Machholz

Laura E. Langland-Shula, Graeme H. Smith

Comments: 14 pages, 4 tables, 2 figures, accepted for publication in ApJL

Subjects: Astrophysics (astro-ph)

[375] arXiv:0706.2029 [pdf, other]

Title: The Chemical Compositions of the Type II Cepheids -- The BL Her and W Vir Variables

Thomas Maas (1), Sunetra Giridhar (2), David L. Lambert (1) ((1) The W.J. McDonald Observatory (2) Indian Institute of Astrophysics)

Comments: 41 pages including 11 figures and 4 tables; Accepted for publication in ApJ

Journal-ref: Astrophys.J.666:378-392,2007

Subjects: Astrophysics (astro-ph)

[376] arXiv:0706.2039 [pdf, other]

Title: Oscillatory secular modes: The thermal micropulses

A. Gautschy, L.G. Althaus

Comments: To be published - essentially footnote-free - in Astronomy & Astrophysics

Subjects: Astrophysics (astro-ph)

[377] arXiv:0706.2041 [pdf, other]

Title: Disappearing cosmological constant in f(R) gravity

Alexei A. Starobinsky

Comments: 8 pages, footnote clarified, grammatical typo corrected, references added, final version to be published in JETPL

Journal-ref: JETP Lett.86:157-163,2007

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

[378] arXiv:0706.2043 [pdf, other]

Title: Phase Spaces in Special Relativity: Towards Eliminating Gravitational Singularities

Peter Danenhower

Comments: 18 pages, amslatex

Subjects: Astrophysics (astro-ph)

[379] arXiv:0706.2055 [pdf, other]

Title: The TACTIC atmospheric Cherenkov Imaging telescope

R. Koul, A.K. Tickoo, S.K. Kaul, S.R. Kaul, N. Kumar, K.K. Yadav, N. Bhatt, K. Venugopal, H.C. Goyal, M. Kothari, P. Chandra, R.C. Rannot, V.K. Dhar, M.K. Koul, R.K. Kaul, S. Kotwal, K. Chanchalani, S. Thoudam, N. Chouhan, M. Sharma, S. Bhattacharyya, S. Sahayanathan

Comments: 27 pages, 13 figures, accepted for publication in NIM A

Journal-ref: Nucl.Instrum.Meth.A578:548-564,2007

Subjects: Astrophysics (astro-ph)

[380] arXiv:0706.2059 [pdf, other]

Title: BRIDGE: A Direct-tree Hybrid N-body Algorithm for Fully Self-consistent Simulations of Star Clusters and their Parent Galaxies

M. Fujii, M. Iwasawa, Y. Funato, J. Makino

Comments: 12 pages, 13 figures, Accepted for PASJ

Subjects: Astrophysics (astro-ph)

[381] arXiv:0706.2075 [pdf, other]

Title: Bianchi Model CMB Polarization and its Implications for CMB Anomalies

Andrew Pontzen (1), Anthony Challinor (1,2) ((1) IoA Cambridge, (2) DAMTP Cambridge)

Comments: Accepted for publication in MNRAS. Minor grammatical and typographical changes to reflect version in press. 13 pages, 6 figures

Subjects: Astrophysics (astro-ph)

[382] arXiv:0706.2086 [pdf, other]

Title: On the relation between the proton-air cross section and fluctuations of the shower longitudinal profile

R. Ulrich, J. Blümer, R. Engel, F. Schüssler, M. Unger

Comments: Contribution to the 30th International Cosmic Ray Conference, Merida, Mexico, July 2007

Subjects: Astrophysics (astro-ph)

[383] arXiv:0706.2096 [pdf, other]

Title: Measurement of the UHECR energy spectrum using data from the Surface Detector of the Pierre Auger Observatory

Markus Roth (for the Auger Collaboration)

Comments: Contribution to the 30th International Cosmic Ray Conference, Merida, Mexico, July 2007, 4 pages, 6 figures

Subjects: Astrophysics (astro-ph)

[384] arXiv:0706.2100 [pdf, other]

Title: Molecular opacities for low-mass metal-poor AGB stars undergoing the Third Dredge Up

S. Cristallo, O. Straniero, M.T. Lederer, B. Aringer

Comments: 23 pages, 8 figures, accepted for publication in ApJ

Journal-ref: Astrophys.J.667:489-496,2007

Subjects: Astrophysics (astro-ph)

[385] arXiv:0706.2101 [pdf, other]

Title: Dark Matter Annihilation in Substructures Revised

L. Pieri, G. Bertone, E Branchini

Comments: Version accepted for publication in MNRAS. Other subhalos mass function slopes added. All-sky analysis performed. Boost factors added. High resolution figures for all models in this http URL

Journal-ref: Mon.Not.Roy.Astron.Soc.384:1627,2008

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

[386] arXiv:0706.2102 [pdf, other]

Title: The lower mass function of the young open cluster Blanco 1: from 30 Mjup to 3 Mo

Estelle Moraux (LAOG), Jerome Bouvier (LAOG), John Stauffer, David Barrado Y Navascues, Jean-Charles Cuillandre

Comments: 18 pages, 15 figures and 5 tables accepted in A&A

Subjects: Astrophysics (astro-ph)

[387] arXiv:0706.2105 [pdf, other]

Title: Equilibrium of stellar dynamical systems in the context of the Vlasov-Poisson model

jerome perez

Comments: 8 pages, no figures, accepted in Communications in Nonlinear Science and Numerical Simulation

Subjects: Astrophysics (astro-ph)

[388] arXiv:0706.2120 [pdf, other]

Title: IRAS08281-4850 and IRAS14325-6428: two A-type post-AGB stars with s-process enrichment

M. Reyniers, G.C. Van de Steene, P.A.M. van Hoof, H. Van Winckel

Comments: 8 pages, 6 figures, accepted by A&A

Subjects: Astrophysics (astro-ph)

[389] arXiv:0706.2128 [pdf, other]

Title: Stability and Formation of the Resonant System HD 73526

Zs. Sandor, W. Kley, P. Klagyivik

Comments: 12 pages, 14 figures, accepted in A&A, v2: technical changes

Subjects: Astrophysics (astro-ph)

[390] arXiv:0706.2137 [pdf, other]

Title: The broadband spectrum of Cygnus X-1

S. Fritz, J. Wilms, K. Pottschmidt, M. A. Nowak, E. Kendziorra, M. G. Kirsch, I. Kreykenbohm, A. Santangelo

Comments: 4 pages, 3 figures

Subjects: Astrophysics (astro-ph)

[391] arXiv:0706.2139 [pdf, other]

Title: Spectral type dependent rotational braking and strong magnetic flux in three components of the late-M multiple system LHS 1070

Ansgar Reiners, Andreas Seifahrt, Hans Ulrich Käufl, Ralf Siebenmorgen, Alain Smette

Comments: accepted for publication as A&A Letter

Subjects: Astrophysics (astro-ph)

[392] arXiv:0706.2145 [pdf, other]

Title: Prompt muons in extended air showers

J.Ridky, D.Nosek, P.Travnicek, P.Necesal

Comments: Contribution to the 30th International Cosmic Ray Conference, Merida, Mexico; 4 pages, 3 figures

Subjects: Astrophysics (astro-ph)

[393] arXiv:0706.2150 [pdf, other]

Title: The polar ring galaxy AM1934-563 revisited

N. Brosch (1,2), A. Kniazev (2,3), D. Buckley (2), D. O'Donoghue (2), Y. Hashimoto (2), N. Loaring (2), E. Romero (2), M. Still (2), P. Vaisanen (2), E.B. Burgh (4), K. Nordsieck (4) ((1) Wise Observatory, Israel; (2) SAAO, South Africa; (3) SAO, Russia; (4) University of Wisconsin; USA)

Comments: 19 pages, 13 figures, submitted to MNRAS. Some figures were bitmapped to reduce the size. Full resolution version is available from this http URL

Subjects: Astrophysics (astro-ph)

[394] arXiv:0706.2151 [pdf, other]

Title: Nonlocal Cosmology

S. Deser (Caltech and Brandeis), R. P. Woodard (U. of Florida)

Comments: Expanded(!) version, to appear in Phys. Rev. Letters

Journal-ref: Phys.Rev.Lett.99:111301,2007

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

[395] arXiv:0706.2158 [pdf, other]

Title: Ultra High Energy Cosmic Rays Diffusion in an Expanding Universe

R. Aloisio, V. Berezinsky, A. Gazizov

Comments: To appear in the proceedings of 30th International Cosmic Ray Conference (ICRC 2007), Merida, Yucatan, Mexico, 3-11 Jul 2007

Subjects: Astrophysics (astro-ph)

[396] arXiv:0706.2164 [pdf, other]

Title: Spitzer Mid-to-Far-Infrared Flux Densities of Distant Galaxies

Casey Papovich (1), Gregory Rudnick (3), Emeric Le Floc'h (1,3), Pieter G. van Dokkum (4), George H. Rieke (1), Edward N. Taylor (5), Lee Armus (6), Eric Gawiser (4), Jiasheng Huang (7), Delphine Marcillac (1), Marijn Franx (5) ((1) Steward Observatory, (2) NOAO, (3) IfA, (4) Yale, (5) Leiden Observatory, (6) SSC/Caltech, (7) CfA)

Comments: Accepted for Publication in ApJ. AASTeX format. 34 pages, 12 figures. Updated references and other small textual revisions

Subjects: Astrophysics (astro-ph)

[397] arXiv:0706.2170 [pdf, other]

Title: Transient jets in V617 Sagittarii

J. E. Steiner, A. S. Oliveira, C. A. O. Torres, A. Damineli

Comments: Four pages, accepted to be published as a Letter in A&A

Subjects: Astrophysics (astro-ph)

[398] arXiv:0706.2171 [pdf, other]

Title: A multiwavelength study of young massive star forming regions: II. The dust environment

Guido Garay, Diego Mardones, Kate J. Brooks, Liza Videla, Yanett Contreras

Comments: 6 figures, accepted by ApJ

Journal-ref: Astrophys.J.666:309-320,2007

Subjects: Astrophysics (astro-ph)

[399] arXiv:0706.2174 [pdf, other]

Title: Planets around evolved intermediate-mass stars. I. Two substellar companions in the open clusters NGC 2423 and NGC 4349

C. Lovis, M. Mayor

Comments: 9 pages, 11 figures, accepted for publication in A&A

Subjects: Astrophysics (astro-ph)

[400] arXiv:0706.2181 [pdf, other]

Title: GZK Photons Above 10 EeV

Graciela B Gelmini, Oleg Kalashev, Dmitry V. Semikoz

Comments: 20 pages, 9 figures (21 panels), this http URL and this http URL needed to typeset

Journal-ref: JCAP 0711:002,2007

Subjects: Astrophysics (astro-ph)