output
19962026
most citedPlanck 2013 results. XVI. Cosmological parameters

6.6k citations

Showing 2007 · astro-phShow all

71 papers · 2 filters

astro-ph2007★ 88 cited

Radially-Inflowing Molecular Gas in NGC 1275 Deposited by a X-ray Cooling Flow in the Perseus Cluster

Jeremy Lim, YiPing Ao, Dinh-V-Trung

We have imaged in CO(2-1) the molecular gas in NGC 1275 (Perseus A), the cD galaxy at the center of the Perseus Cluster, at a spatial resolution of 1 kpc over a central regio…

astro-ph2007★ 33 cited

On the nature of outflows in intermediate-mass protostars: a case study of IRAS 20050+2720

M. T. Beltran, R. Estalella, J. M. Girart +2

Context. This is the third of a series of papers devoted to study in detail and with high-angular resolution intermediate-mass molecular outflows and their powering sources. Aims.…

astro-ph2007★ 37 cited

Molecular shells in IRC+10216: Evidence for non-isotropic and episodic mass loss enhancement

Dinh-V-Trung, Jeremy Lim

We report high angular-resolution VLA observations of cyanopolyyne molecules HCN and HCN from the carbon rich circumstellar envelope of IRC+10216. The observed low-lying ro…

astro-ph2007★ 67 cited

Forming an Early O-type Star Through Gas Accretion?

Luis A. Zapata, Aina Palau, Paul Ho +4

We present high angular resolution ( 3) and sensitive 1.3 mm continuum, cyanogen (CN) and vinyl cyanide (CHCN) line observations made with the Submillimeter Array…

astro-ph2007★ 136 cited

Combining Lens Distortion and Depletion to Map the Mass Distribution of A1689

Keiichi Umetsu, Tom Broadhurst

[Abridged] We derive a projected 2D mass map of the well studied galaxy cluster A1689 based on an entropy-regularized maximum-likelihood combination of the lens magnification and d…

astro-ph2007★ 218 cited

An X-ray, IR, and Submillimeter Flare of Sagittarius A*

D. P. Marrone, F. K. Baganoff, M. R. Morris +14

Energetic flares are observed in the Galactic supermassive black hole Sagittarius A* from radio to X-ray wavelengths. On a few occasions, simultaneous flares have been detected in…

astro-ph2007★ 50 cited

Properties of newly formed dust by SN2006jc based on near-to-mid infrared observation with AKARI

I. Sakon, T. Wada, Y. Ohyama +18

We present our latest results on near- to mid- infrared observation of SN2006jc at 200 days after the discovery using the Infrared Camera (IRC) on board . The near-infrared…

astro-ph2007★ 36 cited

Hyperflares of SGRs as an engine for millisecond extragalactic radio bursts

S. B. Popov, K. A. Postnov

We propose that the strong millisecond extragalactic radio burst (mERB) discovered by Lorimer et al. (2007) may be related to a hyperflare from an extragalactic soft gamma-ray repe…

astro-ph2007★ 113 cited

Spatially Resolved Molecular Hydrogen Emission in the Inner 200AU Environments of Classical T Tauri Stars

Tracy L. Beck, Peter J. McGregor, Michihiro Takami +1

We present 2.0-2.4micron integral field spectroscopy at adaptive optics spatial resolution (~0.''1) obtained with the Near-infrared Integral Field Spectrograph (NIFS) at Gemini Nor…

astro-ph2007★ 71 cited

A re-visit of the phase-resolved X-ray and γ-ray spectra of the Crab pulsar

Anisia P. S. Tang, J. Takata, J. J. Jia +1

We use a modified outer gap model to study the multi-frequency phase-resolved spectra of the Crab pulsar. The emissions from both poles contribute to the light curve and the phase-…

astro-ph2007★ 8 cited

Cosmic Covariance and the Low Quadrupole Anisotropy of the Wilkinson Microwave Anisotropy Probe (WMAP) Data

Lung-Yih Chiang, Pavel D. Naselsky, Peter Coles

The quadrupole power of cosmic microwave background (CMB) temperature anisotropies seen in the WMAP data is puzzlingly low. In this paper we demonstrate that Minimum Variance Optim…

astro-ph2007★ 16 cited

SMA High Angular Resolution Imaging of the Lensed Quasar APM08279+5255

M. Krips, A. B. Peck, K. Sakamoto +4

We present Submillimeter Array observations of the z=3.91 gravitationally lensed broad absorption line quasar APM08279+5255 which spatially resolve the 1.0mm (0.2mm rest-frame) dus…

astro-ph2007★ 28 cited

Massive expanding torus and fast outflow in planetary nebula NGC 6302

Dinh-V-Trung, V. Bujarrabal, A. Castro-Carrizo +2

We present interferometric observations of CO and CO =21 emission from the butterfly-shaped, young planetary nebula NGC 6302. The high angular resolution and hi…

astro-ph2007★ 83 cited

Simultaneous Multi-Wavelength Observations of Magnetic Activity in Ultracool Dwarfs. II. Mixed Trends in VB10 and LSR1835+32 and the Possible Role of Rotation

E. Berger, G. Basri, J. E. Gizis +8

[Abridged] As part of our on-going investigation of magnetic activity in ultracool dwarfs we present simultaneous radio, X-ray, UV, and optical observations of LSR1835+32 (M8.5), a…

astro-ph2007★ 53 cited

The CO Molecular Outflows of IRAS 16293-2422 Probed by the Submillimeter Array

Sherry C. C. Yeh, Naomi Hirano, Tyler L. Bourke +4

We have mapped the proto-binary source IRAS 16293-2422 in CO 2-1, 13CO 2-1, and CO 3-2 with the Submillimeter Array (SMA). The maps with resolution of 1".5-5" reveal a single small…

astro-ph2007★ 44 cited

A Micro Molecular Bipolar Outflow From HL Tau

Michihiro Takami, Tracy L. Beck, Tae-Soo Pyo +2

We present detailed geometry and kinematics of the inner outflow toward HL Tau observed using Near Infrared Integral Field Spectograph (NIFS) at the Gemini-North 8-m Observatory. W…

astro-ph2007★ 27 cited

Three-Dimensional Observations of H_2 Emission around Sgr A East - I. Structure in the Central 10 Parsecs of Our Galaxy

Sungho Lee, Soojong Pak, Minho Choi +6

We have obtained velocity-resolved spectra of the H_2 v=1-0 S(1) (lambda = 2.1218 micron) emission line at 2 arcsec angular resolution (or 0.08 pc spatial resolution) in four regio…

astro-ph2007★ 26 cited

Can gravitational infall energy lead to the observed velocity dispersion in DLAs?

Alexei O. Razoumov, Michael L. Norman, Jason X. Prochaska +3

The median observed velocity width v_90 of low-ionization species in damped Ly-alpha systems is close to 90 km/s, with approximately 10% of all systems showing v_90 > 210 km/s at z…

astro-ph2007★ 62 cited

A Method for Weak Lensing Flexion Analysis by the HOLICs Moment Approach

Yuki Okura, Keiichi Umetsu, Toshifumi Futamase

We have developed a method for measuring higher-order weak lensing distortions of faint background galaxies, namely the weak gravitational flexion, by fully extending the Kaiser, S…

astro-ph2007★ 44 cited

Candidate Rotating Toroids around High-Mass (Proto)Stars

R. S. Furuya, R. Cesaroni, S. Takahashi +3

Using the OVRO, Nobeyama, and IRAM mm-arrays, we searched for ``disk''-outflow systems in three high-mass (proto)star forming regions: G16.59-0.05, G23.01-0.41, and G28.87+0.07. Th…

astro-ph2007★ 7 cited

Structural and Nucleosynthetic Evolution of Metal-poor and Metal-free Low and Intermediate Mass Stars

Simon W. Campbell, John C. Lattanzio

We report on an investigation into stellar evolution and nucleosynthesis in the low and extremely low metallicity regime, including models of stars with a pure Big Bang composition…

astro-ph2007★ 48 cited

The Circumnuclear Molecular Gas in the Seyfert Galaxy NGC4945

Richard C. Y. Chou, A. B. Peck, J. Lim +6

We have mapped the central region of NGC 4945 in the transition of CO, CO, and CO, as well as the continuum at 1.3 mm, at an angular resolution of $5…

astro-ph2007★ 92 cited

The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds: VII. Ophiuchus Observed with MIPS

Deborah L. Padgett, Luisa M. Rebull, Karl R. Stapelfeldt +21

We present maps of 14.4 deg^2 of the Ophiuchus dark clouds observed by the Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS). These high quality maps depict b…

astro-ph2007★ 43 cited

X-winds in Action

Mike J. Cai, Hsien Shang, Hsiao-Hsuan Lin +1

The interaction of accretion disks with the magnetospheres of young stars can produce X-winds and funnel flows. With the assumption of axial symmetry and steady state flow, the pro…