Astrophysics

Authors and titles for August 2004

[501] arXiv:astro-ph/0408501 [pdf, other]

Title: The gas temperature in the surface layers of protoplanetary disks

I. Kamp, C.P. Dullemond

Comments: 28 pages, 8 figures, accepted for publication in ApJ

Journal-ref: Astrophys.J. 615 (2004) 991-999

Subjects: Astrophysics (astro-ph)

[502] arXiv:astro-ph/0408502 [pdf, other]

Title: Properties of Molecular Gas in Massive Low Surface Brightness Galaxies, Including New 12CO Observations of Three Malin 1 `Cousins'

K. O'Neil, E. Schinnerer

Comments: Accepted for publication with ApJL. The paper can also be uploaded from this http URL 6 pages including 2 figures and 3 tables. Accepted by ApJL

Journal-ref: Astrophys.J. 615 (2004) L109-L112

Subjects: Astrophysics (astro-ph)

[503] arXiv:astro-ph/0408503 [pdf, other]

Title: The gas temperature in flaring disks around pre-main sequence stars

B. Jonkheid, F. G. A. Faas, G.-J. van Zadelhoff, E. F. van Dishoeck

Comments: 14 pages, 10 figures, accepted for publication in A&A

Journal-ref: Astron.Astrophys. 428 (2004) 511-521

Subjects: Astrophysics (astro-ph)

[504] arXiv:astro-ph/0408504 [pdf, other]

Title: An Empirical Algorithm for Broad-band Photometric Redshifts of Quasars from the Sloan Digital Sky Survey

Michael A. Weinstein, Gordon T. Richards, Donald P. Schneider, Joshua D. Younger, Michael A. Strauss, Patrick B. Hall, Tamas Budavari, James E. Gunn, Donald G. York, J. Brinkmann

Comments: 34 pages, 12 figures (5 color), accepted by ApJS; higher resolution version available at this http URL

Journal-ref: Astrophys.J.Suppl. 155 (2004) 243-256

Subjects: Astrophysics (astro-ph)

[505] arXiv:astro-ph/0408505 [pdf, other]

Title: Efficient Photometric Selection of Quasars from the Sloan Digital Sky Survey: 100,000 z<3 Quasars from Data Release One

Gordon T. Richards, Robert C. Nichol, Alexander G. Gray, Robert J. Brunner, Robert H. Lupton, Daniel E. Vanden Berk, Shang Shan Chong, Michael A. Weinstein, Donald P. Schneider, Scott F. Anderson, Jeffrey A. Munn, Hugh C. Harris, Michael A. Strauss, Xiaohui Fan, James E. Gunn, Zeljko Ivezic, Donald G. York, J. Brinkmann

Comments: 35 pages, 11 figures (3 color), 2 tables, accepted by ApJS; higher resolution paper and ASCII version of catalog available at this http URL

Journal-ref: Astrophys.J.Suppl. 155 (2004) 257-269

Subjects: Astrophysics (astro-ph)

[506] arXiv:astro-ph/0408506 [pdf, other]

Title: O VII and O VIII absorption by hot gas in the vicinity of the Galaxy

B.McKernan (Maryland), T.Yaqoob (JHU, NASA GSFC), C.S.Reynolds (Maryland)

Comments: 8 pages. Modified discussion of Fe-K band absorption features in PDS 456 and PG 1211+143

Journal-ref: Astrophys.J. 617 (2004) 232-239

Subjects: Astrophysics (astro-ph)

[507] arXiv:astro-ph/0408507 [pdf, other]

Title: The narrow-line quasar NAB 0205+024 observed with XMM-Newton

L. C. Gallo (1), Th. Boller (1), W. N. Brandt (2), A. C. Fabian (3), S. Vaughan (4) ((1) MPE; (2)PSU; (3)IoA; (4)University of Leicester)

Comments: 7 pages. Accepted for publication in MNRAS

Subjects: Astrophysics (astro-ph)

[508] arXiv:astro-ph/0408508 [pdf, other]

Title: Circumstellar interaction of the type Ia supernova 2002ic

N.N. Chugai, R.A. Chevalier, P. Lundqvist

Comments: 12 pages, MNRAS, in press

Subjects: Astrophysics (astro-ph)

[509] arXiv:astro-ph/0408509 [pdf, other]

Title: The abundance of HOC+ in diffuse clouds

H. Liszt, R. Lucas, J. H. Black

Comments: Accepted for publication in Astronomy and Astrophysics 23/08/2004

Journal-ref: Astron.Astrophys. 428 (2004) 117-120

Subjects: Astrophysics (astro-ph)

[510] arXiv:astro-ph/0408510 [pdf, other]

Title: Nonlinear Scale Invariance in Local Disk Flows

Steven A. Balbus

Comments: Submitted to A&A, 4 pages, no figs

Subjects: Astrophysics (astro-ph)

[511] arXiv:astro-ph/0408511 [pdf, other]

Title: The influence of rotation in radiation driven winds from hot stars II. CAK topological analysis

Michel Cure, Diego Rial

Comments: 11 pages, Astronomy and Astrophysics Accepted

Journal-ref: Astron.Astrophys. 428 (2004) 545-554

Subjects: Astrophysics (astro-ph)

[512] arXiv:astro-ph/0408512 [pdf, other]

Title: Setting the Triggering Threshold on Swift

K. McLean, E. E. Fenimore, D. Palmer, S. Barthelmy, N. Gehrels, H. Krimm, C. Markwardt, A. Parsons

Comments: 4 pages, 1 figure, in proceedings of the "Gamma-Ray Bursts: 30 Years of Discovery" conf in Sante Fe NM (Sept 2003), Fenimore and Galassi (eds), AIP

Subjects: Astrophysics (astro-ph)

[513] arXiv:astro-ph/0408513 [pdf, other]

Title: Swift's Ability to Detect Gamma-Ray Bursts

E. E. Fenimore, K. McLean, D. Palmer, S. Barthelemy, N. Gehrels, H. Krimm, C. Markwardt, A. Parsons, M. Stephens, J. Tueller

Comments: 12 pages, 10 figures including 7 bonus figures not in the proceedings. To appear in Baltic Astronomy as the proceedings of the 2003 JEMAM conf in Budapest

Subjects: Astrophysics (astro-ph)

[514] arXiv:astro-ph/0408514 [pdf, other]

Title: The Trigger Algorithm for the Burst Alert Telescope on Swift

E. Fenimore, D. Palmer, M. Galassi, T. Tavenner, S. Barthelmy, N. Gehrels, A. Parsons, J. Tueller

Comments: 3 pages, no figures, from the "Gamma-Ray Burst and Afterglow Astronomy 2001" confernce, Woodshole, MA, Sept 2001

Journal-ref: in "Gamma-Ray Burst and Afterglow Astronomy 2001", Ricker and Vanderspek (eds), AIP 662, pg 491, 2003

Subjects: Astrophysics (astro-ph)

[515] arXiv:astro-ph/0408515 [pdf, other]

Title: Multifrequency analysis of 21 cm fluctuations from the Era of Reionization

M. G. Santos, A. Cooray, L. Knox

Comments: 14 pages, 14 figures. New version to match paper accepted for publication in ApJ. The frequency cross-correlations of the signal are now smaller. Main conclusions of the paper remain unchanged

Journal-ref: Astrophys.J. 625 (2005) 575-587

Subjects: Astrophysics (astro-ph)

[516] arXiv:astro-ph/0408516 [pdf, other]

Title: Cosmic Star Formation History to z=1 from a Narrow Emission Line Selected Tunable Filter Survey

Karl Glazebrook, Jeffrey Tober, Scott Thomson, Joss Bland-Hawthorn, Roberto Abraham

Comments: 12 pages, 3 figures. ApJ in press (Dec 2004)

Subjects: Astrophysics (astro-ph)

[517] arXiv:astro-ph/0408517 [pdf, other]

Title: FeII/MgII Emission Line Ratios of QSOs. II. z>6 Objects

F.Iwamuro, M.Kimura, S.Eto, T.Maihara, K.Motohara, Y.Yoshii, M.Doi

Comments: 12 pages, 2 figures. Accepted for publication in ApJ (10 October 2004, v614)

Journal-ref: Astrophys.J. 614 (2004) 69-74

Subjects: Astrophysics (astro-ph)

[518] arXiv:astro-ph/0408518 [pdf, other]

Title: Large Scale CO and [CI] emission in the rho Ophiuchi Molecular Cloud

Craig A. Kulesa, Aimee L. Hungerford, Christopher K. Walker, Xiaolei Zhang, Adair P. Lane

Comments: 17 pages, 21 figures. To be published in the Astrophysical Journal. High resolution color version (PS, PDF formats) available at this http URL

Journal-ref: Astrophys.J. 625 (2005) 194-209

Subjects: Astrophysics (astro-ph)

[519] arXiv:astro-ph/0408519 [pdf, other]

Title: The New Interpretation of the Uniformly Expanding Universe

Yoshio Kubo

Comments: this http URL used, 7pages with 6 eps figures

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

[520] arXiv:astro-ph/0408520 [pdf, other]

Title: Discovery of six Ly alpha emitters near a radio galaxy at z ~ 5.2

B.P. Venemans, H.J.A. Rottgering, R.A. Overzier, G.K. Miley (Leiden Observatory), C. De Breuck (ESO), J.D. Kurk (Osservatorio Astrofisico di Arcetri, Firenze), W. van Breugel (IGPP/LLNL), C.L. Carilli (NRAO), H. Ford, T. Heckman (JHU), P. McCarthy (Carnegie Observatories), L. Pentericci (Dipartimento di Fisica, Univ. Roma Tre)

Comments: 4 pages, 1 figure, published in A&A Letters

Journal-ref: Astron.Astrophys. 424 (2004) L17-L20

Subjects: Astrophysics (astro-ph)

[521] arXiv:astro-ph/0408521 [pdf, other]

Title: "Permanence" - An Adaptationist Solution to Fermi's Paradox?

Milan M. Cirkovic

Comments: 23 pages, 2 figures

Subjects: Astrophysics (astro-ph); Physics and Society (physics.soc-ph)

[522] arXiv:astro-ph/0408522 [pdf, other]

Title: The Formation of Free-Floating Brown Dwarves and Planetary-Mass Objects by Photo-Erosion of Prestellar Cores

A. P. Whitworth, H. Zinnecker

Comments: 8 pages, 1 figure. to appear in A&A

Journal-ref: Astron.Astrophys. 427 (2004) 299-306

Subjects: Astrophysics (astro-ph)

[523] arXiv:astro-ph/0408523 [pdf, other]

Title: Big Bang Nucleosynthesis with a New Neutron Lifetime

G. J. Mathews, T. Kajino, T. Shima

Comments: 4 pages, 1 figure, Submitted to Physical Review D, Revised per referee's suggestions

Journal-ref: Phys.Rev. D71 (2005) 021302

Subjects: Astrophysics (astro-ph)

[524] arXiv:astro-ph/0408524 [pdf, other]

Title: A top-down scenario for the formation of massive Tidal Dwarf Galaxies

Pierre-Alain Duc, Frederic Bournaud, Frederic Masset

Comments: 13 pages, 11 figures, accepted for publication in A&A

Journal-ref: Astron.Astrophys. 427 (2004) 803-814

Subjects: Astrophysics (astro-ph)

[525] arXiv:astro-ph/0408525 [pdf, other]

Title: Protostellar Disks: Formation, Fragmentation, and the Brown Dwarf Desert

Christopher D. Matzner (University of Toronto), Yuri Levin (CITA)

Comments: 22 pages, 2 figures, accepted by ApJ. Improved discussions of the criterion for local fragmentation and of the effects of stellar radiation; expanded comparisons to numerical simulations and to observations

Subjects: Astrophysics (astro-ph)

[526] arXiv:astro-ph/0408526 [pdf, other]

Title: The Luminous Erupting Dwarf Nova CV1 in the Dense Globular Cluster M15

Michael M. Shara (1), Sasha Hinkley (1), David R. Zurek (1), Christian Knigge (2) ((1) Dept. of Astrophysics, AMNH (2) Department of Physics and Astronomy, University of Southampton)

Comments: 17 pages, 5 figures. Submitted to AJ

Subjects: Astrophysics (astro-ph)

[527] arXiv:astro-ph/0408527 [pdf, other]

Title: Diffusive Shock Acceleration in Unmodified Relativistic, Oblique Shocks

Donald C. Ellison, Glen P. Double

Comments: Accepted for publication in Astroparticle Physics, August 2004, 22 pages, 14 figures

Journal-ref: Astropart.Phys. 22 (2004) 323-338

Subjects: Astrophysics (astro-ph)

[528] arXiv:astro-ph/0408528 [pdf, other]

Title: Initial Results from the Palomar Adaptive Optics Survey of Young Solar-Type Stars: a Brown Dwarf and Three Stellar Companions

Stanimir A. Metchev (1), Lynne A. Hillenbrand (1) ((1) Caltech)

Comments: 26 pages, 6 tables, 10 figures. ApJ accepted

Journal-ref: Astrophys.J. 617 (2004) 1330-1346

Subjects: Astrophysics (astro-ph)

[529] arXiv:astro-ph/0408529 [pdf, other]

Title: The metal enrichment of the intracluster medium in hierarchical galaxy formation models

Masahiro Nagashima, Cedric G. Lacey, Carlton M. Baugh, Carlos S. Frenk, Shaun Cole

Comments: 21 pages including 21 figures, accepted for publication in MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc. 358 (2005) 1247-1266

Subjects: Astrophysics (astro-ph)

[530] arXiv:astro-ph/0408530 [pdf, other]

Title: A search for circumstellar dust disks with ADONIS

O. Schuetz (1), H. Boehnhardt (1), E. Pantin (2), M. Sterzik (3), S. Els (4), J. Hahn (5), Th. Henning (1) ((1) MPIA Heidelberg, Germany; (2) CEA Saclay, France; (3) ESO Santiago, Chile; (4) ING La Palma, Spain; (5) Saint Mary's University Halifax, Canada)

Comments: To appear in A&A, in press

Journal-ref: Astron.Astrophys. 424 (2004) 613-618

Subjects: Astrophysics (astro-ph)

[531] arXiv:astro-ph/0408531 [pdf, other]

Title: Detection of 21 Centimeter HI Absorption at z = 0.78 in a Survey of Radio Continuum Sources

Jeremy Darling, Riccardo Giovanelli, Martha P. Haynes, Alberto D. Bolatto, Geoffrey C. Bower

Comments: AASTeX, 6 pages, 2 figures, accepted by ApJ Letters

Journal-ref: Astrophys.J. 613 (2004) L101-L104

Subjects: Astrophysics (astro-ph)

[532] arXiv:astro-ph/0408532 [pdf, other]

Title: The massive star IMF at high metallicity

Fabio Bresolin (Institute for Astronomy, Hawaii)

Comments: 6 pages, to appear in IMF@50, ed. by E. Corbelli, F. Palla & H. Zinnecker (Dordrecht: Kluwer)

Subjects: Astrophysics (astro-ph)

[533] arXiv:astro-ph/0408533 [pdf, other]

Title: The Case of the Off-Center, Levitating Bar in the Large Magellanic Cloud

Dennis Zaritsky (Univ. of Arizona)

Comments: 5 emulateapj style pages, accepted for publication in ApJL

Journal-ref: Astrophys.J. 614 (2004) L37-L40

Subjects: Astrophysics (astro-ph)

[534] arXiv:astro-ph/0408534 [pdf, other]

Title: Radio observations of a few giant sources

C. Konar (1), D.J. Saikia (1,2), C.H. Ishwara-Chandra (1), V.K. Kulkarni (1) ((1) NCRA, TIFR (2) Jodrell Bank Observatory, University of Manchester)

Comments: 11 pages, 2 figures (Figure 1 shows the images of 17 sources), 4 tables. accepted for publication in Monthly Notices

Subjects: Astrophysics (astro-ph)

[535] arXiv:astro-ph/0408535 [pdf, other]

Title: The Double-Lined Spectroscopic Binary Haro 1-14c

M. Simon (SUNY-Stony Brook), L. Prato (Lowell Obs.)

Comments: Accepted by ApJ Letters

Journal-ref: Astrophys.J. 613 (2004) L69-L72

Subjects: Astrophysics (astro-ph)

[536] arXiv:astro-ph/0408536 [pdf, other]

Title: The 2dF Galaxy Redshift Survey: the local E+A galaxy population

Chris Blake, Michael Pracy, Warrick Couch, Kenji Bekki, Ian Lewis, Karl Glazebrook, Ivan Baldry, Carlton Baugh, Joss Bland-Hawthorn, Terry Bridges, Russell Cannon, Shaun Cole, Matthew Colless, Chris Collins, Gavin Dalton, Roberto De Propris, Simon Driver, George Efstathiou, Richard Ellis, Carlos Frenk, Carole Jackson, Ofer Lahav, Stuart Lumsden, Steve Maddox, Darren Madgwick, Peder Norberg, John Peacock, Bruce Peterson, Will Sutherland, Keith Taylor

Comments: 16 pages, 13 figures, accepted for publication in MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc.355:713-727,2004

Subjects: Astrophysics (astro-ph)

[537] arXiv:astro-ph/0408537 [pdf, other]

Title: Submillimeter Observations of Low Metallicity Galaxy NGC 4214

Gaku Kiuchi, Kouji Ohta, Marcin Sawicki, Michael Allen

Comments: 17 pages, 6 figures, accepted for publication in AJ

Subjects: Astrophysics (astro-ph)

[538] arXiv:astro-ph/0408538 [pdf, other]

Title: High Energy Emission from Magnetars

C. Thompson, A.M. Beloborodov

Comments: Astrophysical Journal, 634, 565 (2005)

Journal-ref: Astrophys.J. 634 (2005) 565-569

Subjects: Astrophysics (astro-ph)

[539] arXiv:astro-ph/0408539 [pdf, other]

Title: Protoplanetary Earth Formation: Further Evidence and Geophysical Implications

J. Marvin Herndon

Subjects: Astrophysics (astro-ph); Geophysics (physics.geo-ph)

[540] arXiv:astro-ph/0408540 [pdf, other]

Title: Pulsation of M-type Mira variables with moderately different mass: search for observable mass effects

M.J. Ireland, M. Scholz, P.G. Tuthill, P.R. Wood

Comments: Accepted for MNRAS, 8 Pages, 8 Figures

Subjects: Astrophysics (astro-ph)

[541] arXiv:astro-ph/0408541 [pdf, other]

Title: Chandra Observation of a Group of Galaxies HCG 80: Does the Spiral-Only Group Have Hot Intragroup Gas?

Naomi Ota (1), Umeyo Morita (2), Tetsu Kitayama (3), Takaya Ohashi (2) ((1) RIKEN, (2) Tokyo Metropolitan Univ., (3) Toho Univ.)

Comments: 12 pages, 6 figures; minor corrections. To appear in PASJ, Vol 56 No.5

Subjects: Astrophysics (astro-ph)

[542] arXiv:astro-ph/0408542 [pdf, other]

Title: Calculation of the dependence of transition frequencies on the fine structure constant and the search for variation of alpha in QSO spectra

J. C. Berengut, V. A. Dzuba, V. V. Flambaum, M. V. Marchenko

Comments: 4 pages, 1 figure

Subjects: Astrophysics (astro-ph)

[543] arXiv:astro-ph/0408543 [pdf, other]

Title: The metallicity distribution of F/G dwarfs derived from BATC survey data

Cui-hua Du, Xu Zhou, Jun Ma, Jian-rong Shi, Alfred Bing-Chih Chen, Zhao-ji Jiang, Jian-sheng

Comments: 22 pages, 9 figure, accepted by Astronomical Journal

Subjects: Astrophysics (astro-ph)

[544] arXiv:astro-ph/0408544 [pdf, other]

Title: Cumulative analysis of the association between the gravitational wave detectors NAUTILUS and EXPLORER and the gamma-ray bursts detected by BATSE and BeppoSAX

P. Astone, D. Babusci, M. Bassan, P. Carelli, E. Coccia, C. Cosmelli, S. D'Antonio, V. Fafone, F. Frontera, G. Giordano, C. Guidorzi, A. Marini, Y. Minenkov, I. Modena, G. Modestino, A. Moleti, E. Montanari, G.V. Pallottino, G. Pizzella, L. Quintieri, A. Rocchi, F. Ronga, L. Sperandio, R. Terenzi, G. Torrioli, M. Visco

Comments: 10 pages, 6 figures; minor corrections, added references. Accepted for publication in Phys. Rev. D

Journal-ref: Phys. Rev. D71, 042001 (2005)

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

[545] arXiv:astro-ph/0408545 [pdf, other]

Title: XMM-Newton study of the lensing cluster of galaxies CL0024+17

Y.-Y. Zhang, H. Boehringer, Y. Mellier, G. Soucail, W. Forman

Comments: 16 pages, 12 figures, to appear in A&A

Journal-ref: Astron.Astrophys. 429 (2005) 85-99

Subjects: Astrophysics (astro-ph)

[546] arXiv:astro-ph/0408546 [pdf, other]

Title: Distribution of the extensive Doppler redshift of quasars

Yi-Ping Qin, Hong-Tao Liu, En-Wei Liang, Yun-Ming Dong, Cheng-Yue Su

Comments: 13 pages, 8 figures

Journal-ref: Mon.Not.Roy.Astron.Soc.351:1319-1326,2004

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

[547] arXiv:astro-ph/0408547 [pdf, other]

Title: Determination of the equation of the state of the Universe using ~ 0.1 Hz Gravitational Wave Detectors

Ryuichi Takahashi, Takashi Nakamura

Comments: 9 pages, 6 figures; accepted for publication in Prog. Theor. Phys

Journal-ref: Prog.Theor.Phys. 113 (2005) 63-71

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

[548] arXiv:astro-ph/0408548 [pdf, other]

Title: Weak Lensing by Large-Scale Structure with the FIRST Radio Survey

Tzu-Ching Chang (Berkeley), Alexandre Refregier (CEA/Saclay), David J. Helfand (Columbia)

Comments: 17 pages, 16 figures. To appear in ApJ

Journal-ref: Astrophys.J. 617 (2004) 794-810

Subjects: Astrophysics (astro-ph)

[549] arXiv:astro-ph/0408549 [pdf, other]

Title: Evidence for a Geometrically Thick Self-Gravitating Accretion Disk in NGC 3079

Paul T. Kondratko, Lincoln J. Greenhill, James M. Moran (Harvard-Smithsonian Center for Astrophysics)

Comments: 41 pages, 13 figures, to appear in the 2005 January 10 issue of the Astrophysical Journal. High resolution versions of the figures and of the paper are available at this http URL

Journal-ref: Astrophys.J. 618 (2005) 618-634

Subjects: Astrophysics (astro-ph)

[550] arXiv:astro-ph/0408550 [pdf, other]

Title: Magnetic field generation in relativistic shocks - An early end of the exponential Weibel instability in electron-proton plasmas

J. Wiersma, A. Achterberg (Universiteit Utrecht, Netherlands)

Comments: 7 pages, 3 figures, accepted for publication in A&A

Journal-ref: Astron.Astrophys. 428 (2004) 365-371

Subjects: Astrophysics (astro-ph)