output
19962026
most citedPlanck 2013 results. XVI. Cosmological parameters

6.6k citations

Showing 2011 · astro-ph.SRShow all

25 papers · 2 filters

astro-ph.SR2011★ 18 cited

The Extremely High-Velocity Outflow from the Luminous Young Stellar Object G5.89-0.39

Yu-Nung Su, Sheng-Yuan Liu, Huei-Ru Chen +1

We have imaged the extremely high-velocity outflowing gas in CO (2-1) and (3-2) associated with the shell-like ultracompact HII region G5.89-0.39 at a resolution of ~3" (correspond…

astro-ph.SR2011★ 16 cited

Magnetospheric Accretion and Ejection of Matter in Resistive Magnetohydrodynamic Simulations

Miljenko Čemeljić, Hsien Shang, Tzu-Yang Chiang

The ejection of matter in the close vicinity of a young stellar object is investigated, treating the accretion disk as a gravitationally bound reservoir of matter. By solving the r…

astro-ph.SR2011★ 16 cited

Magnetic Interactions in Pre-Main-Sequence Binaries

Fred C. Adams, Michael J. Cai, Daniele Galli +2

Young stars typically have strong magnetic fields, so that the magnetospheres of newly formed close binaries can interact, dissipate energy, and produce synchrotron radiation. The…

astro-ph.SR2011★ 80 cited

Images of the Extended Outer Regions of the Debris Ring Around HR 4796 A

C. Thalmann, M. Janson, E. Buenzli +48

We present high-contrast images of HR 4796 A taken with Subaru/HiCIAO in H-band, resolving the debris disk in scattered light. The application of specialized angular differential i…

astro-ph.SR2011★ 50 cited

The Origin of OB Clusters: From 10 pc to 0.1 pc

Hauyu Baobab Liu, Guillermo Quintana-Lacaci, Ke Wang +4

We observe the 1.2 mm continuum emission around the OB cluster forming region G10.6-0.4, using the IRAM 30m telescope MAMBO-2 bolometer array and the Submillimeter array. Compariso…

astro-ph.SR2011★ 29 cited

Probing Substellar Companions of AGB Stars through Spirals and Arcs

Hyosun Kim, Ronald E. Taam

Recent observations of strikingly well-defined spirals in the circumstellar envelopes of asymptotic giant branch (AGB) stars point to the existence of binary companions in these ob…

astro-ph.SR2011★ 15 cited

A Detailed Study of Spitzer-IRAC Emission in Herbig-Haro Objects (II): Interaction Between Ejecta and Ambient Gas

Michihiro Takami, Jennifer L. Karr, Brunella Nisini +1

We present a new analysis of the physical conditions in three Herbig-Haro complexes (HH 54, HH 212, and the L 1157 protostellar jet) using archival data from the Infrared Array Cam…

astro-ph.SR2011

Remodel the Envelope Around the 21 micrometer PPN IRAS 07134+1005

Chun-Hui Yang, Chin-Fei Lee

Recently, the CO J=3-2 observational result of the envelope of the 21 micrometer PPN IRAS 07134+1005 has been reported. Assuming that the CO J=3-2 line was optically thin, the mass…

astro-ph.SR2011★ 48 cited

Kinematics and Physical Conditions of the Innermost Envelope in B335

Hsi-Wei Yen, Shigehisa Takakuwa, Nagayoshi Ohashi

We made C18O (2-1) and CS (7-6) images of the protostellar envelope around B335 with a high spatial dynamic range from ~10000 to ~400 AU, by combining the Submillimeter Array and s…

astro-ph.SR2011★ 106 cited

Arcsecond resolution images of the chemical structure of the low-mass protostar IRAS 16293-2422

Jes K. Jorgensen, Tyler L. Bourke, Quang Nguyen Luong +1

It remains a key challenge to establish the molecular content of different components of low-mass protostars, like their envelopes and disks, and how this depends on the evolutiona…

astro-ph.SR2011★ 54 cited

Millimeter Observations of the Transition Disk around HD135344B (SAO 206462)

A-Ran Lyo, Nagayoshi Ohashi, Chunhua Qi +2

We present \sim1" resolution 1.3 millimeter dust continuum and spectral line (12CO and 13CO J=2-1) observations of the transitional disk system HD 135344B obtained with the Submill…

astro-ph.SR2011★ 2 cited

Chemistry of dense clumps near moving Herbig-Haro objects

Helen Christie, Serena Viti, David Williams +2

Localised regions of enhanced emission from HCO+, NH3 and other species near Herbig-Haro objects (HHOs) have been interpreted as arising in a photochemistry stimulated by the HHO r…

astro-ph.SR2011★ 95 cited

Silicate features in Galactic and extragalactic post-AGB discs

C. Gielen, J. Bouwman, H. Van Winckel +7

Aims. In this paper we study the Spitzer and TIMMI2 infrared spectra of post-AGB disc sources, both in the Galaxy and the LMC. Using the observed infrared spectra we determine the…

astro-ph.SR2011★ 10 cited

Star-forming Region Sh 2-233IR I. Deep NIR Observations toward the Embedded Stellar Clusters

Chi-Hung Yan, Y. C. Minh, Shiang-Yu Wang +2

We observed the Sh 2-233IR (S233IR) region with better sensitivity in near-infrared than previous studies for this region. By applying statistical subtraction of the back- ground s…

astro-ph.SR2011★ 259 cited

An AMR Study of the Common Envelope Phase of Binary Evolution

Paul M. Ricker, Ronald E. Taam

The hydrodynamic evolution of the common envelope phase of a low mass binary composed of a 1.05 Msun red giant and a 0.6 Msun companion has been followed for five orbits of the sys…

astro-ph.SR2011★ 169 cited

Surveying the Agents of Galaxy Evolution in the Tidally-Stripped, Low Metallicity Small Magellanic Cloud (SAGE-SMC) II. Cool Evolved Stars

Martha L. Boyer, Sundar Srinivasan, Jacco Th. van Loon +17

We investigate the infrared (IR) properties of cool, evolved stars in the Small Magellanic Cloud (SMC), including the red giant branch (RGB) stars and the dust-producing red superg…

astro-ph.SR2011★ 42 cited

Magnetic Flux Expulsion in Star Formation

Bo Zhao, Zhi-Yun Li, Fumitaka Nakamura +2

Stars form in dense cores of magnetized molecular clouds. If the magnetic flux threading the cores is dragged into the stars, the stellar field would be orders of magnitude stronge…

astro-ph.SR2011★ 61 cited

Molecular Outflows From the Protocluster, Serpens South

Fumitaka Nakamura, Koji Sugitani, Yoshito Shimajiri +8

We present the results of CO () and HCO () mapping observations toward a nearby embedded cluster, Serpens South, using the ASTE 10 m telescope. Our CO () m…

astro-ph.SR2011★ 5 cited

An Envelope Disrupted by a Quadrupolar Outflow in the Pre-Planetary Nebula IRAS19475+3119

Ming-Chien Hsu, Chin-Fei Lee

IRAS 19475+3119 is a quadrupolar pre-planetary nebula (PPN), with two bipolar lobes, one in the east-west (E-W) direction and one in the southeast-northwest (SE-NW) direction. We h…

astro-ph.SR2011★ 45 cited

Molecular Outflows in the Substellar Domain: Millimeter Observations of Young Very Low Mass Objects in Taurus and rho Ophiuchi

Ngoc Phan-Bao, Chin-Fei Lee, Paul T. P. Ho +1

We report here our search for molecular outflows from young very low mass stars and brown dwarfs in Taurus and rho Ophiuchi. Using the Submillimeter Array (SMA) and the Combined Ar…

astro-ph.SR2011★ 19 cited

High Resolution CO Observations of Massive Star Forming Regions

P. D. Klaassen, C. D. Wilson, E. R. Keto +3

Context. To further understand the processes involved in the formation of massive stars, we have undertaken a study of the gas dynamics surrounding three massive star forming regio…

astro-ph.SR2011★ 253 cited

Direct Imaging of Fine Structures in Giant Planet Forming Regions of the Protoplanetary Disk around AB Aurigae

J. Hashimoto, M. Tamura, T. Muto +49

We report high-resolution 1.6 $\micron$ polarized intensity () images of the circumstellar disk around the Herbig Ae star AB Aur at a radial distance of 22 AU () up to 5…

astro-ph.SR2011★ 107 cited

Disk Formation in Magnetized Clouds Enabled by the Hall Effect

Ruben Krasnopolsky, Zhi-Yun Li, Hsien Shang

Stars form in dense cores of molecular clouds that are observed to be significantly magnetized. A dynamically important magnetic field presents a significant obstacle to the format…

astro-ph.SR2011★ 28 cited

An Overall Picture of the Gas Flow In Massive Cluster Forming Region: The Case of G10.6-0.4

Hauyu Baobab Liu, Qizhou Zhang, Paul T. P. Ho

The massive clump G10.6-0.4 is an OB cluster forming region, in which multiple UC HII regions have been identified. In the present study, we report arcsecond resolution observation…