Search Publications

Discovering a misaligned CO outflow related to the red MSX source G034.5964-01.0292

Rubio, M.; Ortega, M. E.; Paron, S. +1 more

Aims: The red MSX source G034.5964-01.0292 (MSXG34), catalogued as a massive young stellar object, was observed in molecular lines with the aim of discovering and studying molecular outflows.
Methods: We mapped a region of 3'× 3' centred at MSXG34 using the Atacama Submillimeter Telescope Experiment in the ¹²CO J = 3-2 and HCO…

Integrated spectroscopy of the Herschel Reference Survey (Corrigendum). The spectral line properties of a volume-limited, K-band-selected sample of nearby galaxies

Buat, V.; Boselli, A.; Cortese, L. +2 more

Polarisation observations of H₂O J_K-1 K₁ = 5₃₂ - 4₄₁ 620.701 GHz maser emission with Herschel/HIFI in Orion KL

Menten, K. M.; Morris, P.; Teyssier, D. +9 more

Context. The high intensities and narrow bandwidths exhibited by some astronomical masers make them ideal tools for studying star-forming giant molecular clouds. The water maser transition J_K-1K1 = 5₃₂-4₄₁ at 620.701 GHz can only be observed from above Earth's strongly absorbing atmosphere; it…

Probing the evolution of galaxy clusters with the SZ effect

Lapi, A.; Cavaliere, A.

In galaxy clusters the thermal Sunyaev-Zel'dovich (SZ) effect from the hot intracluster medium (ICM) provides a direct, self-contained measure of the pressure integrated over crossing lines of sight, that is intrinsically independent of redshift and well suited for evolutionary studies. We show in detail how the size of the effect and its pattern …

Mass assembly in quiescent and star-forming galaxies since z ≃ 4 from UltraVISTA

Aussel, H.; Le Floc'h, E.; Sanders, D. B. +33 more

We estimate the galaxy stellar mass function and stellar mass density for star-forming and quiescent galaxies with 0.2 < z < 4. We construct a large, deep (K_s < 24) sample of 220 000 galaxies selected using the new UltraVISTA DR1 data release. Our analysis is based on precise 30-band photometricredshifts. By comparing these pho…

Herschel view of the Taurus B211/3 filament and striations: evidence of filamentary growth?

Martin, P. G.; Hill, T.; White, G. L. +24 more

We present first results from the Herschel Gould Belt survey for the B211/L1495 region in the Taurus molecular cloud. Thanks to their high sensitivity and dynamic range, the Herschel images reveal the structure of the dense, star-forming filament B211 with unprecedented detail, along with the presence of striations perpendicular to the filament an…

The VLT-FLAMES Tarantula Survey. VIII. Multiplicity properties of the O-type star population

Crowther, P. A.; Lennon, D. J.; Herrero, A. +14 more

Context. The Tarantula Nebula in the Large Magellanic Cloud is our closest view of a starburst region and is the ideal environment to investigate important questions regarding the formation, evolution and final fate of the most massive stars.
Aims: We analyze the multiplicity properties of the massive O-type star population observed through m…

The deepest Herschel-PACS far-infrared survey: number counts and infrared luminosity functions from combined PEP/GOODS-H observations

Berta, S.; Magnelli, B.; Nordon, R. +34 more

We present results from the deepest Herschel-Photodetector Array Camera and Spectrometer (PACS) far-infrared blank field extragalactic survey, obtained by combining observations of the Great Observatories Origins Deep Survey (GOODS) fields from the PACS Evolutionary Probe (PEP) and GOODS-Herschel key programmes. We describe data reduction and thec…

Global collapse of molecular clouds as a formation mechanism for the most massive stars

Avison, A.; André, Ph.; Schneider, N. +8 more

The relative importance of primordial molecular cloud fragmentation versus large-scale accretion still remains to be assessed in the context of massive core/star formation. Studying the kinematics of the dense gas surrounding massive-star progenitors can tell us the extent to which large-scale flow of material impacts the growth in mass of star-fo…

Planck intermediate results. V. Pressure profiles of galaxy clusters from the Sunyaev-Zeldovich effect

Böhringer, H.; Kneissl, R.; Dahle, H. +215 more

Taking advantage of the all-sky coverage and broadfrequency range of the Planck satellite, we study the Sunyaev-Zeldovich (SZ) and pressure profiles of 62 nearby massive clusters detected at high significance in the 14-month nominal survey. Careful reconstruction of the SZ signal indicates that most clusters are individually detected at least out …