output
19962026
most citedMolecular Gas and Star Formation in Nearby Disk Galaxies

681 citations

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56 papers · 1 filter

astro-ph2008★ 95 cited

Rotating molecular outflows: the young T Tauri star in CB26

R. Launhardt, Ya. Pavlyuchenkov, F. Gueth +7

The disk-outflow connection is thought to play a key role in extracting excess angular momentum from a forming proto-star. Though jet rotation has been observed in a few objects, n…

astro-ph2008★ 80 cited

HCO mapping of the Horsehead : Tracing the illuminated dense molecular cloud surfaces

Maryvonne Gerin, Javier R. Goicoechea, Jérôme Pety +1

Far-UV photons strongly affect the physical and chemical state of molecular gas in the vicinity of young massive stars. We have obtained maps of the HCO and H13CO+ ground state lin…

astro-ph2008★ 36 cited

The CO line SED and atomic carbon in IRAS F10214+4724

Y. Ao, A. Weiss, D. Downes +3

Using the IRAM 30m telescope and the Plateau de Bure interferometer we have detected the \ctwo and the CO 32, 43, 65, 76 transitions as well as the dust continuum at 3…

astro-ph2008★ 112 cited

Ram-pressure stripped molecular gas in the Virgo spiral galaxy NGC 4522

B. Vollmer, J. Braine, C. Pappalardo +1

IRAM 30m 12CO(1-0) and 12CO(2-1) HERA observations are presented for the ram-pressure stripped Virgo spiral galaxy NGC 4522. The CO emission is detected in the galactic disk and th…

astro-ph2008★ 36 cited

Chemistry in Disks. II. -- Poor molecular content of the AB Aur disk

Katharina Schreyer, Stéphane Guilloteau, Dmitry Semenov +9

We study the molecular content and chemistry of a circumstellar disk surrounding the Herbig Ae star AB Aur at (sub-)millimeter wavelengths. Our aim is to reconstruct the chemical h…

astro-ph2008★ 16 cited

HI and CO in the circumstellar environment of the oxygen-rich AGB star RX Lep

Y. Libert, T. Le Bertre, E. Gérard +1

Circumstellar shells around AGB stars are built over long periods of time that may reach several million years. They may therefore be extended over large sizes (~1 pc, possibly mor…

astro-ph2008★ 174 cited

Gas flow models in the Milky Way embedded bars

Nemesio Rodriguez-Fernandez, Francoise Combes

The gas distribution and dynamics in the inner Galaxy present many unknowns as the origin of the asymmetry of the longitude-velocity (lv) diagram of the Central Molecular Zone (CMZ…

astro-ph2008★ 111 cited

Disks around CQ Tau and MWC 758: dense PDR or gas dispersal?

Edwige Chapillon, Stéphane Guilloteau, Anne Dutrey +1

The overall properties of disks surrounding intermediate PMS stars (HAe) are not yet well constrained by current observations. The disk inclination, which significantly affect SED…

astro-ph2008★ 77 cited

Cold gas in the Perseus cluster core: Excitation of molecular gas in filaments

P. Salomé, F. Combes, Y. Revaz +4

We have recently detected CO lines in the well-known filaments around NGC 1275, the galaxy at the centre of the Perseus cluster of galaxies. These previous observations, with the H…

astro-ph2008★ 22 cited

Long-term observations of Uranus and Neptune at 90 GHz with the IRAM 30m telescope - (1985 -- 2005)

C. Kramer, R. Moreno, A. Greve

The planets Uranus and Neptune with small apparent diameters are primary calibration standards. We investigate their variability at ~90 GHz using archived data taken at the IRAM 30…

astro-ph2008★ 48 cited

CN in prestellar cores

Pierre Hily-Blant, Malcolm Walmsley, G. Pineau Des Forêts +1

Determining the structure of and the velocity field in prestellar cores is essential to understanding protostellar evolution.} {We have observed the dense prestellar cores L 1544 a…

astro-ph2007

The Horsehead mane: Towards an observational benchmark for chemical models

Jérôme Pety, Javier R. Goicoechea, Maryvonne Gerin +5

After a discussion about the need for observational benchmark for chemical models, we explain 1) why the Horsehead western edge is well suited to serve as reference for models and…

astro-ph2007★ 78 cited

Evidence for alignment of the rotation and velocity vectors in pulsars. II. Further data and emission heights

Simon Johnston, M. Kramer, A. Karastergiou +3

We have conducted observations of 22 pulsars at frequencies of 0.7, 1.4 and 3.1 GHz and present their polarization profiles. The observations were carried out for two main purposes…

astro-ph2007★ 320 cited

The earliest phases of high-mass star formation: a 3 square degree millimeter continuum mapping of Cygnus X

Frédérique Motte, S. Bontemps, P. Schilke +3

We have made an extensive 1.2mm continuum mosaicing study of the Cygnus X molecular cloud complex using the MAMBO cameras at the IRAM 30 m telescope. We then compared our mm maps w…

astro-ph2007

Gravitational stability in the disk of M51

M. Hitschfeld, C. Kramer, K. F. Schuster +2

Star formation laws, like i.e. the Schmidt law relating star formation rate and total gas density, have been studied in several spiral galaxies but the underlying physics are not y…

astro-ph2007★ 78 cited

Molecular gas in QSO host galaxies at z>5

R. Maiolino, R. Neri, A. Beelen +10

We present observations with the IRAM Plateau de Bure Interferometer of three QSOs at z>5 aimed at detecting molecular gas in their host galaxies as traced by CO transitions. CO (5…

astro-ph2007★ 57 cited

Molecular line radiative transfer in protoplanetary disks: Monte Carlo simulations versus approximate methods

Ya. Pavlyuchenkov, D. Semenov, Th. Henning +4

We analyze the line radiative transfer in protoplanetary disks using several approximate methods and a well-tested Accelerated Monte Carlo code. A low-mass flaring disk model with…

astro-ph2007★ 103 cited

An empirical model for the beams of radio pulsars

A. Karastergiou, S. Johnston

Motivated by recent results on the location of the radio emission in pulsar magnetospheres, we have developed a model which can account for the large diversity found in the average…

astro-ph2007★ 96 cited

Particularly Efficient Star Formation in M33

E. Gardan, J. Braine, K. F. Schuster +2

The Star Formation (SF) rate in galaxies is an important parameter at all redshifts and evolutionary stages of galaxies. In order to understand the increased SF rates in intermedia…

astro-ph2007★ 174 cited

Discovery of Interstellar Propylene (CH_2CHCH_3): Missing Links in Interstellar Gas-Phase Chemistry

N. Marcelino, J. Cernicharo, M. Agundez +5

We report the discovery of propylene (also called propene, CH_2CHCH_3) with the IRAM 30-m radio telescope toward the dark cloud TMC-1. Propylene is the most saturated hydrocarbon e…

astro-ph2007★ 229 cited

Highly-excited CO emission in APM08279+5255 at z=3.9

A. Weiss, D. Downes, R. Neri +5

We report the detection of the CO 4-3, 6-5, 9-8, 10-9, and 11-10 lines in the Broad Absorption Line quasar APM08279+5255 at z=3.9 using the IRAM 30m telescope. We also present IRAM…

astro-ph2007★ 1 cited

Small-scale dissipative structures of diffuse ISM turbulence: I- CO diagnostics

Pierre Hily-Blant, Jerome Pety, Edith Falgarone

Observations of translucent molecular gas in CO and CO emission lines, at high spectral and spatial resolutions, evidence different kinds of structures at small scale…

astro-ph2006★ 109 cited

A highly-collimated SiO jet in the HH212 protostellar outflow

C. Codella, S. Cabrit, F. Gueth +4

We mapped the HH212 Class 0 outflow in SiO(2--1, 5--4) and continuum using the PdBI in its extended configurations. The unprecedented angular resolution (down to 0.34") allows accu…

astro-ph2006★ 55 cited

Detection of HNC and tentative detection of CN at z=3.9

M. Guelin, P. Salome, R. Neri +8

Molecular line emission from high-redshift galaxies holds great promise for the study of galaxy formation and evolution. The weak signals can only be detected with the largest mm-w…