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22 papers · 1 filter
A gas cloud on its way towards the super-massive black hole in the Galactic Centre
S. Gillessen, R. Genzel, T. K. Fritz +9
Measurements of stellar orbits provide compelling evidence that the compact radio source Sagittarius A* at the Galactic Centre is a black hole four million times the mass of the Su…
The evolution of the star formation activity per halo mass up to redshift ~ 1.6 as seen by Herschel
P. Popesso, A. Biviano, G. Rodighiero +40
Star formation in massive galaxies is quenched at some point during hierarchical mass assembly. To understand where and when the quenching processes takes place, we study the evolu…
The star formation history of the Milky Way's Nuclear Star Cluster
O. Pfuhl, T. K. Fritz, M. Zilka +7
We present spatially resolved imaging and integral field spectroscopy data for 450 cool giant stars within 1\,pc from Sgr\,A*. We use the prominent CO bandheads to derive effective…
The zCOSMOS-SINFONI Project I: Sample Selection and Natural-Seeing Observations
Chiara Mancini, Natascha Foerster Schreiber, Alvio Renzini +21
The zCOSMOS SINFONI project is aimed at studying the physical and kinematical properties of a sample of massive z~1.4-2.5 star-forming galaxies, through SINFONI near-IR integral fi…
Herschel/PACS spectroscopy of NGC 4418 and Arp 220: H2O, H2^{18}O, OH, ^{18}OH, O I, HCN and NH3
E. González-Alfonso, J. Fischer, J. Graciá-Carpio +14
Herschel/PACS spectroscopy of the luminous infrared galaxies NGC4418 and Arp220 reveals high excitation in H2O, OH, HCN, and NH3. In NGC4418, absorption lines were detected with E_…
Enriched haloes at redshift with no star-formation: Implications for accretion and wind scenarios
N. Bouche, M. T. Murphy, C. Peroux +9
[Abridged] In order to understand which process (e.g. galactic winds, cold accretion) is responsible for the cool (T~10^4 K) halo gas around galaxies, we embarked on a program to s…
FIR measurements of Ly- emitters at z1.0: dust attenuation from PACS-\emph{Herschel}
I. Oteo, A. Bongiovanni, A. M. Pérez García +24
One remaining open question regarding the physical properties of Ly emitters (LAEs) is their dust content and its evolution with redshift. The variety of results is large and wi…
How well can we Measure the Intrinsic Velocity Dispersion of Distant Disk Galaxies?
R. Davies, N. M. Forster Schreiber, G. Cresci +13
The kinematics of distant galaxies, from z=0.1 to z>2, play a key role in our understanding of galaxy evolution from early times to the present. One of the important parameters is…
Galaxy Structure and Mode of Star Formation in the SFR-Mass Plane from z ~ 2.5 to z ~ 0.1
Stijn Wuyts, Natascha M. Forster Schreiber, Arjen van der Wel +23
We analyze the dependence of galaxy structure (size and Sersic index) and mode of star formation (Σ_SFR and SFR_IR/SFR_UV) on the position of galaxies in the SFR versus Mass diagra…
On Star Formation Rates and Star Formation Histories of Galaxies out to z ~ 3
Stijn Wuyts, Natascha M. Forster Schreiber, Dieter Lutz +23
We compare multi-wavelength SFR indicators out to z~3 in GOODS-South. Our analysis uniquely combines U-to-8um photometry from FIREWORKS, MIPS 24um and PACS 70, 100, and 160um photo…
Rotational Support of Giant Clumps in High-z Disc Galaxies
Daniel Ceverino, Avishai Dekel, Nir Mandelker +4
We address the internal support against total free-fall collapse of the giant clumps that form by violent gravitational instability in high-z disc galaxies. Guidance is provided by…
The metallicity dependence of the CO {\rightarrow} H_2 conversion factor in z>1 star forming galaxies
R. Genzel, L. J. Tacconi, F. Combes +20
We use the first systematic samples of CO millimeter emission in z>1 'main-sequence' star forming galaxies (SFGs) to study the metallicity dependence of the conversion factor αCO,…
The impact of evolving infrared spectral energy distributions of galaxies on star formation rate estimates
R. Nordon, D. Lutz, R. Genzel +27
We combine Herschel-PACS data from the PEP program with Spitzer 24 um and 16 um photometry and ultra deep IRS mid-infrared spectra, to measure the mid- to far-infrared spectral ene…
The PEP survey: clustering of infrared-selected galaxies and structure formation at z~2 in the GOODS South
M. Magliocchetti, P. Santini, G. Rodighiero +23
ABRIDGED-This paper presents the first direct estimate of the 3D clustering properties of far-infrared sources up to z~3. This has been possible thanks to the Pacs Evolutionary Pro…
Line derived infrared extinction towards the Galactic Center
Tobias K. Fritz, Stefan Gillessen, Katie Dodds-Eden +7
We derive the extinction curve towards the Galactic Center from 1 to 19 micron. We use hydrogen emission lines of the minispiral observed by ISO-SWS and SINFONI. The extinction fre…
Massive molecular outflows and negative feedback in ULIRGs observed by Herschel-PACS
E. Sturm, E. González-Alfonso, S. Veilleux +13
Mass outflows driven by stars and active galactic nuclei are a key element in many current models of galaxy evolution. They may produce the observed black hole-galaxy mass relation…
The effect of environment on star forming galaxies at redshift 1 - First insight from PACS
P. Popesso, G. Rodighiero, A. Saintonge +4
We use deep 70, 100 and 160 um observations taken with PACS, the Photodetector Array Camera and Spectrometer on board of Herschel, as part of the PACS Evolutionary Probe (PEP) guar…
COLD GASS, an IRAM Legacy Survey of Molecular Gas in Massive Galaxies: II. The non-universality of the Molecular Gas Depletion Timescale
Amelie Saintonge, Guinevere Kauffmann, Jing Wang +21
We study the relation between molecular gas and star formation in a volume-limited sample of 222 galaxies from the COLD GASS survey, with measurements of the CO(1-0) line from the…
COLD GASS, an IRAM legacy survey of molecular gas in massive galaxies: I. Relations between H2, HI, stellar content and structural properties
Amelie Saintonge, Guinevere Kauffmann, Carsten Kramer +21
We are conducting COLD GASS, a legacy survey for molecular gas in nearby galaxies. Using the IRAM 30m telescope, we measure the CO(1-0) line in a sample of ~350 nearby (D=100-200 M…
Concurrent X-ray, near-infrared, sub-millimeter, and GeV gamma-ray observations of Sgr A*
G. Trap, A. Goldwurm, K. Dodds-Eden +13
The radiative counterpart of the supermassive black hole at the Galactic center (GC), Sgr A*, is subject to frequent flares visible simultaneously in X-rays and near-infrared (NIR)…
Arp220: extinction and merger-induced star formation
H. Engel, R. I. Davies, R. Genzel +3
We analyse new spatially resolved integral field spectroscopic H- and K-band data at a resolution of 0.3arcsec (100pc) and re-analyse interferometric CO(2-1) line observations of t…
Far-Infrared Line Deficits in Galaxies with Extreme Lfir/MH2 Ratios
J. Graciá-Carpio, E. Sturm, S. Hailey-Dunsheath +13
We report initial results from the far-infrared fine structure line observations of a sample of 44 local starbursts, Seyfert galaxies and infrared luminous galaxies obtained with t…