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88 papers · 2 filters
Star formation towards the Galactic HII region RCW120
M. Figueira, A. Zavagno, L. Deharveng +16
The expansion of HII regions can trigger the formation of stars. An overdensity of young stellar objects (YSOs) is observed at the edges of HII regions but the mechanisms that give…
In and out star formation in z~1.5 quiescent galaxies from rest-frame UV spectroscopy and the far-infrared
Raphael Gobat, Emanuele Daddi, Veronica Strazzullo +18
We present a sample of 34 spectroscopically confirmed BzK-selected ~1e11 Msun quiescent galaxies (pBzK) in the COSMOS field. The targets were initially observed with VIMOS on the V…
PHIBSS: Exploring the Dependence of the CO-H Conversion Factor on Total Mass Surface Density at
Timothy Carleton, Michael C. Cooper, Alberto D. Bolatto +10
We present an analysis of the relationship between the CO-H conversion factor () and total mass surface density () in star-forming galaxies at $z < 1…
Globular Clusters As Tracers of Fine Structure in the Dramatic Shell Galaxy NGC 474
Sungsoon Lim, Eric W. Peng, Pierre-Alain Duc +7
Globular clusters (GCs) are some of the most visible tracers of the merging and accretion history of galaxy halos. Metal-poor GCs, in particular, are thought to arrive in massive g…
Obscured Active Galactic Nuclei triggered in compact star-forming galaxies
Yu-Yen Chang, Emeric Le Floc'h, Stéphanie Juneau +10
We present a structural study of 182 obscured Active Galactic Nuclei (AGNs) at z<=1.5, selected in the COSMOS field from their extreme infrared to X-ray luminosity ratio and their…
Dense gas in low-metallicity galaxies
J. Braine, Y. Shimajiri, P. André +4
Stars form out of the densest parts of molecular clouds. Far-IR emission can be used to estimate the Star Formation Rate (SFR) and high dipole moment molecules, typically HCN, trac…
Molecular outflows in local ULIRGs: energetics from multi-transition OH analysis
E. González-Alfonso, J. Fischer, H. W. W. Spoon +11
We report on the energetics of molecular outflows in 14 local Ultraluminous Infrared Galaxies (ULIRGs) that show unambiguous outflow signatures (P-Cygni profiles or high-velocity a…
AGN-Host Connection at 0.5 < z < 2.5: A rapid evolution of AGN fraction in red galaxies during the last 10 Gyr
Tao Wang, D. Elbaz, D. M. Alexander +13
We explore the dependence of the incidence of moderate-luminosity ( erg s) AGNs and the distribution of their accretion rates on host color at 0.5 <…
The red sequence at birth in the galaxy cluster ClJ1449+0856 at z=2
V. Strazzullo, E. Daddi, R. Gobat +10
We use HST/WFC3 imaging to study the red population in the IR-selected, X-ray detected, low-mass cluster Cl J1449+0856 at z=2, one of the few bona-fide established clusters discove…
Spiral-driven accretion in protoplanetary discs - III tri-dimensional simulations
Patrick Hennebelle, Geoffroy Lesur, Sébastien Fromang
Understanding how accretion proceeds in proto-planetary discs and more generally their dynamics is a crucial issue for explaining the conditions in which planets form. The role tha…
THE NEXT GENERATION VIRGO CLUSTER SURVEY. XIV. Shell feature early-type dwarf galaxies in the Virgo cluster
Sanjaya Paudel, Rory Smith, Pierre-Alain Duc +15
The Next Generation Virgo Cluster Survey is a deep (with a detection limit = 29~mag~arcsec in the band) optical panchromatic survey targeting the Virgo cluste…
Disentangling the ISM phases of the dwarf galaxy NGC 4214 using [CII] SOFIA/GREAT observations
Katja Fahrion, Diane Cormier, Frank Bigiel +9
The [CII] 158 um fine structure line is one of the dominant cooling lines in the interstellar medium (ISM) and is an important tracer of star formation. Recent velocity-resolved st…
High-redshift major mergers weakly enhance star formation
J. Fensch, F. Renaud, F. Bournaud +11
Galaxy mergers are believed to trigger strong starbursts. This is well assessed by observations in the local Universe. However the efficiency of this mechanism has poorly been test…
The Next Generation Virgo Cluster Survey (NGVS). XXIV. The Red Sequence to 10 L and Comparisons with Galaxy Formation Models
Joel C. Roediger, Laura Ferrarese, Patrick Côté +22
We use deep optical photometry from the Next Generation Virgo Cluster Survey [NGVS] to investigate the color-magnitude diagram for the galaxies inhabiting the core of this cluster.…
Evidence for strong evolution in galaxy environmental quenching efficiency between z = 1.6 and z = 0.9
Julie B. Nantais, Adam Muzzin, Remco F. J. van der Burg +7
We analyse the evolution of environmental quenching efficiency, the fraction of quenched cluster galaxies that would be star-forming if they were in the field, as a function of red…
HERUS: A CO Atlas from SPIRE Spectroscopy of local ULIRGs
Chris Pearson, Dimitra Rigopoulou, Peter Hurley +10
We present the Herschel SPIRE Fourier Transform Spectroscopy (FTS) atlas for a complete flux limited sample of local Ultra-Luminous Infra-Red Galaxies as part of the HERschel ULIRG…
Planck's Dusty GEMS. II. Extended [CII] emission and absorption in the Garnet at z=3.4 seen with ALMA
N. Nesvadba, R. Kneissl, R. Canameras +9
We present spatially resolved ALMA [CII] observations of the bright (flux density S=400 mJy at 350 microns), gravitationally lensed, starburst galaxy PLCK G045.1+61.1 at z=3.427, t…
The properties of the Malin 1 galaxy giant disk: A panchromatic view from the NGVS and GUViCS surveys
S. Boissier, A. Boselli, L. Ferrarese +9
Low surface brightness galaxies (LSBGs) represent a significant percentage of local galaxies but their formation and evolution remain elusive. They may hold crucial information for…
Characterizing elusive, faint dusty star-forming galaxies: a lensed, optically undetected ALMA galaxy at z~3.3
P. Santini, M. Castellano, A. Fontana +19
We present the serendipitous ALMA detection of a faint submillimeter galaxy (SMG) lensed by a foreground z~1 galaxy. By optimizing the source detection to deblend the system, we ac…
The XXL survey: first results and future
M. Pierre, C. Adami, M. Birkinshaw +108
The XXL survey currently covers two 25 sq. deg. patches with XMM observations of ~10ks. We summarise the scientific results associated with the first release of the XXL data set, t…
DustPedia - A Definitive Study of Cosmic Dust in the Local Universe
J. I. Davies, M. Baes, S. Bianchi +20
The European Space Agency has invested heavily in two cornerstones missions; Herschel and Planck. The legacy data from these missions provides us with an unprecedented opportunity…
The Herschel Virgo Cluster Survey. XX. Dust and gas in the foreground Galactic cirrus
S. Bianchi, C. Giovanardi, M. W. L. Smith +22
We study the correlation between far-infared/submm dust emission and atomic gas column density in order to derive the properties of the high Galactic latitude, low density, Milky W…
On the distance to the North Polar Spur and the local CO-H2 factor
R. Lallement, S. Snowden, K. D. Kuntz +4
Most models identify the X-ray bright North Polar Spur (NPS) with a hot interstellar (IS) bubble in the Sco-Cen star-forming region at 130 pc. An opposite view considers th…
Star formation associated with neutral hydrogen in the outskirts of early-type galaxies
Mustafa K. Yıldız, Paolo Serra, Reynier F. Peletier +2
About 20 percent of all nearby early-type galaxies ( M) outside the Virgo cluster are surrounded by a disc or ring of low-column-densit…