Astrophysics

Authors and titles for August 2007

[701] arXiv:0708.3877 [pdf, other]

Title: A Null Test of the Cosmological Constant

Takeshi Chiba, Takashi Nakamura

Comments: 5 pages, 1 figure, references added, to be published in this http URL

Journal-ref: Prog.Theor.Phys.118:815-819,2007

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

[702] arXiv:0708.3881 [pdf, other]

Title: Radiation Testing of Consumer High-Speed LSI Chips for the Next Space VLBI Mission, VSOP-2

Kiyoaki Wajima, Noriyuki Kawaguchi, Yasuhiro Murata, Hisashi Hirabayashi

Comments: 6 pages, 14 figures, 1 table, to appear in PASJ, Vol.59, No.6

Subjects: Astrophysics (astro-ph)

[703] arXiv:0708.3890 [pdf, other]

Title: Rapid planetesimal formation in turbulent circumstellar discs

Anders Johansen (1), Jeffrey S. Oishi (2,3), Mordecai-Mark Mac Low (2,1), Hubert Klahr (1), Thomas Henning (1), Andrew Youdin (4) ((1) MPIA, Heidelberg, (2) American Museum of Natural History, (3) University of Virginia, (4) CITA, University of Toronto)

Comments: To appear in Nature (30 August 2007 issue). 18 pages (in referee mode), 3 figures. Supplementary Information can be found at 0708.3893

Subjects: Astrophysics (astro-ph)

[704] arXiv:0708.3893 [pdf, other]

Title: Supplementary Information for ``Rapid planetesimal formation in turbulent circumstellar discs''

Anders Johansen (1), Jeffrey S. Oishi (2,3), Mordecai-Mark Mac Low (2,1), Hubert Klahr (1), Thomas Henning (1), Andrew Youdin (4) ((1) MPIA, Heidelberg; (2) American Museum of Natural History; (3) University of Virginia; (4) CITA, University of Toronto)

Comments: 52 pages, 27 figures. Main paper can be found at 0708.3890

Subjects: Astrophysics (astro-ph)

[705] arXiv:0708.3902 [pdf, other]

Title: B2 1144+35B, a giant low power radio galaxy with superluminal motion. Orientation and evidence for recurrent activity

G. Giovannini, M. Giroletti, G.B. Taylor

Comments: 7 pages, 6 b&w figures. A&A in press

Subjects: Astrophysics (astro-ph)

[706] arXiv:0708.3906 [pdf, other]

Title: Magnesium Isotopes in Halo Stars

Jorge Melendez (RSAA, ANU), Judith G. Cohen (Caltech)

Comments: Proceedings, First Stars III, July 16-20, 2007, Santa Fe

Journal-ref: AIP Conf.Proc.990:181-183,2008

Subjects: Astrophysics (astro-ph)

[707] arXiv:0708.3911 [pdf, other]

Title: The jet of Markarian 501 from the sub-parsec to the kpc scale

G. Giovannini, M. Giroletti, G.B. Taylor

Comments: Contributed talk at the international meeting "Extragalactic Jets: Theory and Observation from Radio to Gamma Ray"; T. A. Rector and D. S. De Young (eds.) - Girdwood, Alaska, 21-24 May, 2007. 6 pgs, in press

Subjects: Astrophysics (astro-ph)

[708] arXiv:0708.3915 [pdf, other]

Title: How Compact are the Cores of AGN? Sub-Parsec Scale Imaging with VLBI at Millimeter Wavelengths

T.P. Krichbaum, S.S. Lee, A.P. Lobanov, A.P. Marscher, M.A. Gurwell

Comments: 8 pages, 4 figures, 2 tables. To appear in: "Extragalactic Jets - Theory and Observation from Radio to Gamma-Ray", eds. T.A. Rector & D.S. De Young, proceedings of a conference held in Girdwood, Alaska, on May 21-24, 2007, ASP Conf. Series, 2007, in press

Subjects: Astrophysics (astro-ph)

[709] arXiv:0708.3922 [pdf, other]

Title: Primordial Light Element Abundances

Paolo Molaro

Comments: talk given at the conference "Pathways Through an Eclectic Universe" Johan Knapen, Terry Mahoney and Alexandre Vazdekis Editors

Subjects: Astrophysics (astro-ph)

[710] arXiv:0708.3953 [pdf, other]

Title: Taking the Measure of the Universe: Precision Astrometry with SIM PlanetQuest

Stephen C. Unwin, Michael Shao, Angelle M. Tanner, Ronald J. Allen, Charles A. Beichman, David Boboltz, Joseph H. Catanzarite, Brian C. Chaboyer, David R. Ciardi, Stephen J. Edberg, Alan L. Fey, Debra A. Fischer, Christopher R. Gelino, Andrew P. Gould, Carl Grillmair, Todd J. Henry, Kathryn V. Johnston, Kenneth J. Johnston, Dayton L. Jones, Shrinivas R. Kulkarni, Nicholas M. Law, Steven R. Majewski, Valeri V. Makarov, Geoffrey W. Marcy, David L. Meier, Rob P. Olling, Xiaopei Pan, Richard J. Patterson, Jo Eliza Pitesky, Andreas Quirrenbach, Stuart B. Shaklan, Edward J. Shaya, Louis E. Strigari, John A. Tomsick, Ann E. Wehrle, Guy Worthey

Comments: 54 pages, 28 figures, uses emulateapj. Submitted to PASP

Subjects: Astrophysics (astro-ph)

[711] arXiv:0708.3967 [pdf, other]

Title: The dynamical viability of scalar-tensor gravity theories

Nishant Agarwal, Rachel Bean

Comments: 24 pages, 3 figures

Journal-ref: Class.Quant.Grav.25:165001,2008

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

[712] arXiv:0708.3968 [pdf, other]

Title: Spectral evolution of GRB 060904A observed with Swift and Suzaku -- Possibility of Inefficient Electron Acceleration

Daisuke Yonetoku, Sachiko Tanabe, Toshio Murakami, Naomi Emura, Yuka Aoyama, Takashi Kidamura, Hironobu Kodaira, Yoshiki Kodama, Ryota Kozaka, Takuro Nashimoto, Shinya Okuno, Satoshi Yokota, Satoru Yoshinari, Keiichi Abe, Kaori Onda, Makoto S. Tashiro, Yuji Urata, Yujin E. Nakagawa, Satoshi Sugita, Kazutaka Yamaoka, Atsumasa Yoshida, Takuto Ishimura, Nobuyuki Kawai, Takashi Shimokawabe, Kenzo Kinugasa, Takayoshi Kohmura, Kaori Kubota, Kei Sugiyasu, Yoshihiro Ueda, Kensuke Masui, Kazuhiro Nakazawa, Tadayuki Takahashi, Shouta Maeno, Eri Sonoda, Makoto Yamauchi, Makoto Kuwahara, Toru Tamagawa, Daisuke Matsuura, Motoko Suzuki, Scott Barthelmy, Neil Gehrels, John Nousek

Comments: 19 pages, 9 figures, accepted for publication in PASJ (Suzaku 2nd Special Issue)

Subjects: Astrophysics (astro-ph)

[713] arXiv:0708.3976 [pdf, other]

Title: Geometry reconstruction of fluorescence detectors revisited

D. Kuempel, K.-H. Kampert, M. Risse

Comments: 4 pages, 5 figures. To appear in the proceedings of 30th International Cosmic Ray Conference (ICRC 2007), Merida, Yucatan, Mexico, 3-11 July 2007

Subjects: Astrophysics (astro-ph)

[714] arXiv:0708.3979 [pdf, other]

Title: Constraining the nature of High Frequency Peakers. I. The spectral variability

M. Orienti (1,2), D. Dallacasa (1,2), C. Stanghellini (2), ((1) Dipartimento di Astronomia, Bologna, (2) IRA-INAF, Bologna)

Comments: 14 pages, 3 figures; accepted for pubblication in A&A

Subjects: Astrophysics (astro-ph)

[715] arXiv:0708.3996 [pdf, other]

Title: Models of crustal heating in accreting neutron stars

P. Haensel, J.L. Zdunik

Comments: 8 pages, 5 figures, Submitted to A&A

Subjects: Astrophysics (astro-ph)

[716] arXiv:0708.4013 [pdf, other]

Title: The Axis of Opportunity: The Large-Scale Correlation of Elliptical Galaxies

Michael J. Longo

Comments: This paper has been withdrawn

Subjects: Astrophysics (astro-ph)

[717] arXiv:0708.4014 [pdf, other]

Title: Spectral energy distributions of submm/radio bright gamma-ray burst host galaxies

M. J. Michałowski, J. Hjorth (Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Denmark)

Comments: 6 pages, 1 figure, Proceedings of the Conference "The Multicoloured Landscape of Compact Objects and their Explosive Origins" (Cefalu, Sicily, 2006 June 11-24). Eds. L. Burderi et al. (New York: AIP), in press, for SED templates, see this http URL

Subjects: Astrophysics (astro-ph)

[718] arXiv:0708.4015 [pdf, other]

Title: Energetic Impact of Jet Inflated Cocoons in Relaxed Galaxy Clusters

John C. Vernaleo, Christopher S. Reynolds (University of Maryland)

Comments: 12 pages, Accepted for publication in ApJ

Subjects: Astrophysics (astro-ph)

[719] arXiv:0708.4017 [pdf, other]

Title: Hot GRB-selected Submillimeter Galaxies

M. J. Michałowski, J. Hjorth, J. M. Castro Cerón, D. Watson (Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Denmark)

Comments: 2 pages, 1 figure, In: Pathways through an eclectic Universe, J. H. Knapen, T. J. Mahoney, and A. Vazdekis (Eds.), ASP Conf. Ser., 2007, in press, for SED templates, see this http URL

Subjects: Astrophysics (astro-ph)

[720] arXiv:0708.4020 [pdf, other]

Title: Yields from single AGB stars

Amanda I. Karakas (RSAA, Mt Stromlo Observatory)

Comments: 8 pages. To appear in "Asymmetrical Planetary Nebulae IV," eds. R. L. M. Corradi, A. Manchado & N. Soker

Subjects: Astrophysics (astro-ph)

[721] arXiv:0708.4026 [pdf, other]

Title: The Evolution of Oxygen and Magnesium in the Bulge and Disk of the Milky Way

A. McWilliam, F. Matteucci, S. Ballero, R.M. Rich, J. P. Fulbright, G. Cescutti

Comments: 22 pages including 5 figures. Submitted to the Astronomical Journal

Subjects: Astrophysics (astro-ph)

[722] arXiv:0708.4030 [pdf, other]

Title: Deep ACS Imaging in the Globular Cluster NGC 6397: The Cluster Color Magnitude Diagram and Luminosity Function

Harvey B. Richer (UBC), Aaron Dotter (Dartmouth), Jarrod Hurley (Swinburne), Jay Anderson (Rice), Ivan King (Washington), Saul Davis (UBC), Gregory G. Fahlman (HIA/NRC), Brad M. S. Hansen (UCLA), Jason Kalirai (UCSC), Nathaniel Paust (STScI), R. Michael Rich (UCLA), Michael M. Shara (AMNH)

Comments: 43 pages including 4 tables and 12 diagrams. Figures 2 and 3 have been bitmapped. Accepted for publication in the Astronomical Journal

Subjects: Astrophysics (astro-ph)

[723] arXiv:0708.4037 [pdf, other]

Title: Dynamics of Rotating Accretion Flows Irradiated by a Quasar

Daniel Proga, Jeremiah P. Ostriker, Ryuichi Kurosawa

Comments: accepted for publication in ApJ

Subjects: Astrophysics (astro-ph)

[724] arXiv:0708.4049 [pdf, other]

Title: An analysis of the durations of Swift Gamma-Ray Bursts

Zhi-Bin Zhang, Chul-Sung Choi

Comments: 5 pages, 4 figures and 2 table; Accepted to A&A with minor changes; Note that our previously main conclusions are unchanged

Subjects: Astrophysics (astro-ph)

[725] arXiv:0708.4062 [pdf, other]

Title: Constraining Dark Energy and Cosmological Transition Redshift with Type Ia Supernovae

F. Y. Wang, Z. G. Dai (NJU)

Comments: 16 pages, 5 figures, 1 table

Journal-ref: Chin.J.Astron.Astrophys.6:561-571,2006

Subjects: Astrophysics (astro-ph)

[726] arXiv:0708.4079 [pdf, other]

Title: GMRT Low Frequency Observations of Extrasolar Planetary Systems

Samuel George, Ian Stevens

Comments: 6 pages, 2 figures, accepted for publication in MNRAS

Subjects: Astrophysics (astro-ph)

[727] arXiv:0708.4083 [pdf, other]

Title: Metal Abundance Properties of M81 Globular Cluster System

Jun Ma (1), David Burstein (2), Zhou Fan, Xu Zhou, Jiansheng Chen, Zhaoji Jiang, Zhenyu Wu, Jianghua Wu ((1)National Astronomical Observatories, Chinese Academy of Sciences, (2)Department of Physics and Astronomy, Arizona State University, Tempe, AZ)

Comments: Accepted for Publication in PASP, 7 pages, 5 figures, fig 1 in jpg

Subjects: Astrophysics (astro-ph)

[728] arXiv:0708.4107 [pdf, other]

Title: The variable mass loss of the AGB star WX Psc as traced by the CO J=1-0 through 7-6 lines and the dust emission

L. Decin, S. Hony, A. de Koter, G. Molenberghs, S. Dehaes, F. Markwick-Kemper

Comments: 12 pages, accepted for publication in A&A

Subjects: Astrophysics (astro-ph)

[729] arXiv:0708.4110 [pdf, other]

Title: The effect of a planet on the dust distribution in a 3D protoplanetary disk

L. Fouchet (1,2), S. T. Maddison (3), J.-F. Gonzalez (1), J. R. Murray (3) ((1) CRAL, Lyon, France, (2) ETH, Zurich, Switzerland, (3) Swinburne University, Australia)

Comments: 13 pages, 12 figures. Accepted for publication in Astronomy & Astrophysics

Subjects: Astrophysics (astro-ph)

[730] arXiv:0708.4118 [pdf, other]

Title: Transformation of Morphology and Luminosity Classes of the SDSS Galaxies

Changbom Park, J. Richard Gott III, Yun-Young Choi

Comments: 14 pages, 7 figures, for higher resolution figures download PDF file at this http URL ; references added and typos in section 3.2 corrected; Final version accepted for publication in ApJ

Journal-ref: Astrophys.J.674:784-796,2008

Subjects: Astrophysics (astro-ph)

[731] arXiv:0708.4119 [pdf, other]

Title: The early spectral evolution of SN 2004dt

G. Altavilla, M. Stehle, P. Ruiz-Lapuente, P. Mazzali, G. Pignata, A. Balastegui, S. Benetti, G. Blanc, R. Canal, N. Elias-Rosa, A. Goobar, A. Harutyunyan, A. Pastorello, F. Patat, J. Rich, M. Salvo, B. P. Schmidt, V. Stanishev, S. Taubenberger, M. Turatto, W. Hillebrandt

Comments: 13 pages, 15 figures, accepted for pubblication in Astronomy and Astrophysics

Subjects: Astrophysics (astro-ph)

[732] arXiv:0708.4120 [pdf, other]

Title: Theoretical model atmosphere spectra used for the calibration of infrared instruments

L. Decin, K. Eriksson

Comments: 16 pages, accepted for publication in A&A. High-resolution version of Fig. 7 published in A&A and available on request

Subjects: Astrophysics (astro-ph)

[733] arXiv:0708.4122 [pdf, other]

Title: On the stability of the triangular libration points: exact results

I. I. Shevchenko

Comments: This paper has been withdrawn

Subjects: Astrophysics (astro-ph)

[734] arXiv:0708.4125 [pdf, other]

Title: Comparing cosmic shear measures - Optimizing the Information content of cosmic shear data vectors

T. Eifler, M. Kilbinger, P. Schneider

Comments: 12 pages, 8 figures

Subjects: Astrophysics (astro-ph)

[735] arXiv:0708.4128 [pdf, other]

Title: On radio emission of the Geminga pulsar and RBS 1223 at the frequency of 111 MHz

Alexander A. Ershov (Pushchino Radio Astronomy Observatory, ASC, LPI)

Comments: 4 pages, 3 figures

Subjects: Astrophysics (astro-ph)

[736] arXiv:0708.4133 [pdf, other]

Title: Some doubts on the validity of the foreground Galactic contribution subtraction from microwave anisotropies

M. Lopez-Corredoira

Comments: 24 pages, 1 figure, accepted to be published in J. Astrophys. Astr

Journal-ref: J. Astrophys. Astr., 28, 101 (2007)

Subjects: Astrophysics (astro-ph)

[737] arXiv:0708.4134 [pdf, other]

Title: Star-gas decoupling and a non-rotating stellar core in He 2-10: Integral field spectroscopy with FLAMES/ARGUS

T. Marquart, K. Fathi, G. Östlin, N. Bergvall, R. J. Cumming, P. Amram

Comments: 4 pages, 3 figures, accepted for publication in A&A Letters, resubmitted with minor revisions

Subjects: Astrophysics (astro-ph)

[738] arXiv:0708.4137 [pdf, other]

Title: A multiwavelength study of Galactic HII region Sh2-294

M. R. Samal, A. K. Pandey, D. K. Ojha, S. K. Ghosh, V. K. Kulkarni, B. C. Bhatt

Comments: 50 pages, 21 figures: Accepted by The Astrophysical Journal; Also available at this http URL

Subjects: Astrophysics (astro-ph)

[739] arXiv:0708.4145 [pdf, other]

Title: Low Luminosity Radio Loud Active Galactic Nuclei

G. Giovannini, M. Giroletti

Comments: Review talk at the 8th European VLBI Network Symposium on New Developments in VLBI Science and Technology, Torun, Poland 26-29 September 2006. It will be published in "Proceedings of Science" (PoS) - a web-based tool provided by SISSA in Trieste. 10 pages

Subjects: Astrophysics (astro-ph)

[740] arXiv:0708.4150 [pdf, other]

Title: Compact radio sources and jet-driven AGN feedback in the early Universe: Constraints from integral-field spectroscopy

N. P. H. Nesvadba, M. D. Lehnert, C. De Breuck, A. Gilbert, W. van Breugel

Comments: A&A accepted

Subjects: Astrophysics (astro-ph)

[741] arXiv:0708.4153 [pdf, other]

Title: Cosmic reionization in a dynamic quintessence cosmology

D. Crociani, M. Viel, L. Moscardini, M. Bartelmann, M. Meneghetti

Comments: 10 pages, minor changes to match the version accepted for publication by MNRAS

Journal-ref: MNRAS, 385, 728 (2008)

Subjects: Astrophysics (astro-ph)

[742] arXiv:0708.4163 [pdf, other]

Title: Chemical evolution of neutron capture elements in our Galaxy and in the dwarf spheroidal galaxies of the Local Group

Gabriele Cescutti (Astronomy Department, Trieste University)

Comments: 182 pages, 74 figures, PhD Thesis. Supervisor: Francesca Matteucci. High quality figures upon request

Subjects: Astrophysics (astro-ph)

[743] arXiv:0708.4169 [pdf, other]

Title: Discovery of new nearby L and late-M dwarfs at low Galactic latitude from the DENIS database

N. Phan-Bao, M. S. Bessell, E. L. Martin, G. Simon, J. Borsenberger, R. Tata, J. Guibert, F. Crifo, T. Forveille, X. Delfosse, J. Lim, B. de Batz

Comments: 17 pages, 11 figures, 7 tables, accepted by MNRAS

Journal-ref: Mon.Not.R.Astron.Soc. 383 (2008) 831

Subjects: Astrophysics (astro-ph)

[744] arXiv:0708.4175 [pdf, other]

Title: Spitzer's View of Planetary Nebulae

Joseph L. Hora

Comments: 8 pages, 2 figures, invited review to appear in the proceedings of the conference "Asymmetrical Planetary Nebulae IV", eds. R.L.M. Corradi, A. Manchado & N. Soker, conference website: this http URL

Subjects: Astrophysics (astro-ph)

[745] arXiv:0708.4185 [pdf, other]

Title: A Submillimeter View of Circumstellar Dust Disks in $\rho$ Ophiuchus

Sean M. Andrews, Jonathan P. Williams

Comments: accepted in ApJ; 38 pages, 11 figures

Journal-ref: Astrophys.J.671:1800-1812,2007

Subjects: Astrophysics (astro-ph)

[746] arXiv:0708.4192 [pdf, other]

Title: Probing Unification With Chandra HETGS and XMM-Newton EPIC And RGS Spectroscopy of the Narrow Emission Line Galaxy NGC 2110

Daniel A. Evans (1), Julia C. Lee (1), T. Jane Turner (2,3), Kimberly A. Weaver (2), Herman L. Marshall (4) ((1) Harvard-Smithsonian Center for Astrophysics, (2) NASA Goddard Space Flight Center, (3) Dept. of Physics, University of Maryland Baltimore County, (4) MIT Kavli Institute for Astrophysics and Space Research)

Comments: 14 pages, 11 figures. Accepted for publication in ApJ

Subjects: Astrophysics (astro-ph)

[747] arXiv:0708.4199 [pdf, other]

Title: Planetary Nebulae Principles & Paradigms: Binaries, Accretion, Magnetic Fields

Eric G. Blackman (Univ. of Rochester), Jason T. Nordhaus (Univ. of Rochester)

Comments: 8 pages, 1 figure; for the proceedings of "Asymmetric Planetary Nebuale IV," R. L. M. Corradi, A. Manchado, N. Soker eds

Subjects: Astrophysics (astro-ph)

[748] arXiv:0708.4202 [pdf, other]

Title: Gravitational waves from black-hole mergers

John G. Baker, William D. Boggs, Joan M. Centrella, Bernard J. Kelly, Sean T. McWilliams, James R. van Meter

Comments: Added reference on large spin-kick configurations. 14 pages, 5 figures, 1 table. To be published in the Proceedings of the 2007 Spring Symposium of the Space Telescope Science Institute (Baltimore, MD), held from Monday April 23, 2007 to Thursday April 26, 2007

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

[749] arXiv:0708.4204 [pdf, other]

Title: A Search for Binary Stars at Low Metallicity

David K. Lai (UCSC), Sara Lucatello (INAF-OAPD), Michael Bolte (UCSC), Debra A. Fischer (SFSU), Jennifer A. Johnson (OSU)

Comments: To appear in conference proceedings,"First Stars III", eds. B. O'Shea, A. Heger & T. Abel. 3 pages, 5 figures

Journal-ref: AIP Conf.Proc.990:145-147,2008

Subjects: Astrophysics (astro-ph)

[750] arXiv:0708.4207 [pdf, other]

Title: Continuum driven winds from super-Eddington stars. A tale of two limits

A. J. van Marle, S. P. Owocki, N. J. Shaviv

Comments: to be published in the conference proceedings of: First Stars III, Santa Fe, 2007

Journal-ref: AIP Conf.Proc.990:250-253,2008

Subjects: Astrophysics (astro-ph)