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Observations of the gas cloud G2 in the Galactic Center
Stefan Gillessen, Reinhard Genzel, Tobias K. Fritz +6
In 2011, we discovered a compact gas cloud ("G2") with roughly three Earth masses that is falling on a near-radial orbit toward the massive black hole in the Galactic Center. The o…
The Nuclear Cluster of the Milky Way: Total Mass and Luminosity
Tobias K. Fritz, Sotiris Chatzopoulos, Ortwin Gerhard +6
Here we present the fundamental properties of the nuclear cluster of the Milky Way. First, we derive its structural properties by constructing a density map of the central 1000'' u…
The evolution of the dust and gas content in galaxies
P. Santini, R. Maiolino, B. Magnelli +36
We use deep Herschel PACS and SPIRE observations in GOODSS, GOODSN and COSMOS to estimate the average dust mass (Mdust) of galaxies on a redshift-stellar mass (Mstar)-SFR grid. We…
The evolution of the dust temperatures of galaxies in the SFR plane up to
B. Magnelli, D. Lutz, A. Saintonge +38
[Abridged] We study the evolution of the dust temperatures of galaxies in the SFR-M* plane up to z~2 using observations from the Herschel Space Observatory. Starting from a sample…
The SINS/zC-SINF survey of z~2 galaxy kinematics: Evidence for powerful AGN-driven nuclear outflows in massive star-forming galaxies
N. M. Förster Schreiber, R. Genzel, S. F. Newman +29
We report the detection of ubiquitous powerful nuclear outflows in massive (> 10^11 Msun) z~2 star-forming galaxies (SFGs), which are plausibly driven by an Active Galactic Nucleus…
A CANDELS - 3D-HST Synergy: Resolved Star Formation Patterns at 0.7 < z < 1.5
Stijn Wuyts, Natascha M. Forster Schreiber, Erica J. Nelson +20
We analyze the resolved stellar populations of 473 massive star-forming galaxies at 0.7 < z < 1.5, with multi-wavelength broad-band imaging from CANDELS and Halpha surface brightne…
Reversal or no reversal: the evolution of the star formation rate-density relation up to z~1.6
F. Ziparo, P. Popesso, A. Finoguenov +27
We investigate the evolution of the star formation rate (SFR)-density relation in the Extended Chandra Deep Field South (ECDFS) and the Great Observatories Origin Deep Survey (GOOD…
The Mean Star-Forming Properties of QSO Host Galaxies
D. J. Rosario, B. Trakhtenbrot, D. Lutz +22
Quasi-stellar objects (QSOs) occur in galaxies in which supermassive black holes (SMBHs) are growing substantially through rapid accretion of gas. Many popular models of the co-evo…
The effect of metal enrichment and galactic winds on galaxy formation in cosmological zoom simulations
Michaela Hirschmann, Thorsten Naab, Romeel Dave +9
We investigate the differential effects of metal cooling and galactic stellar winds on the cosmological formation of individual galaxies with three sets of cosmological, hydrodynam…
The Mid-infrared Emission of Narrow-Line Active Galactic Nuclei: Star-Formation, Nuclear Activity and two populations revealed by WISE
D. J. Rosario, L. Burtscher, R. I. Davies +3
We explore the nature of the long-wavelength mid-infrared (MIR) emission of a sample of 13000 local Type II (narrow-line) Active Galactic Nuclei (AGNs) from the Sloan Digital Sky S…
Validation of the equilibrium model for galaxy evolution to z~3 through molecular gas and dust observations of lensed star-forming galaxies
Amelie Saintonge, Dieter Lutz, Reinhard Genzel +11
We combine IRAM Plateau de Bure Interferometer and Herschel PACS and SPIRE measurements to study the dust and gas contents of high-redshift star forming galaxies. We present new ob…
Fast Molecular Outflows in Luminous Galaxy Mergers: Evidence for Quasar Feedback from Herschel
S. Veilleux, M. Melendez, E. Sturm +18
We report the results from a systematic search for molecular (OH-119 um) outflows with Herschel-PACS in a sample of 43 nearby (z < 0.3) galaxy mergers, mostly ultraluminous infrare…
Massive binaries in the vicinity of Sgr A*
O. Pfuhl, T. Alexander, S. Gillessen +5
A long-term spectroscopic and photometric survey of the most luminous and massive stars in the vicinity of the super-massive black hole Sgr A* revealed two new binaries; a long-per…
Lyman break and UV-selected galaxies at z ~ 1: II. PACS-100um/160um FIR detections
I. Oteo, G. Magdis, Á. Bongiovanni +53
We report the PACS-100um/160um detections of a sample of 42 GALEX-selected and FIR-detected Lyman break galaxies (LBGs) at z ~ 1 located in the COSMOS field and analyze their ultra…
The lack of star formation gradients in galaxy groups up to z~1.6
Felicia Ziparo, Paola Popesso, Andrea Biviano +28
In the local Universe, galaxy properties show a strong dependence on environment. In cluster cores, early type galaxies dominate, whereas star-forming galaxies are more and more co…
Nebular Excitation in z~2 Star-forming Galaxies from the SINS and LUCI Surveys: The Influence of Shocks and AGN
S. F. Newman, P. Buschkamp, R. Genzel +24
Based on high-resolution, spatially resolved data of 10 z~2 star-forming galaxies from the SINS/zC-SINF survey and LUCI data for 12 additional galaxies, we probe the excitation pro…
Pericenter passage of the gas cloud G2 in the Galactic Center
Stefan Gillessen, Reinhard Genzel, Tobias K Fritz +6
We have further followed the evolution of the orbital and physical properties of G2, the object currently falling toward the massive black hole in the Galactic Center on a near-rad…
Hydrodynamical simulations of a compact source scenario for the Galactic Center cloud G2
A. Ballone, M. Schartmann, A. Burkert +6
The origin of the dense gas cloud G2 discovered in the Galactic Center (Gillessen et al. 2012) is still a debated puzzle. G2 might be a diffuse cloud or the result of an outflow fr…
On the origin of the B-stars in the Galactic center
Ann-Marie Madigan, Oliver Pfuhl, Yuri Levin +3
We present a new directly-observable statistic which uses sky position and proper motion of stars near the Galactic center massive black hole to identify populations with high orbi…
The Herschel-PEP survey: evidence for downsizing in the hosts of dusty star-forming systems
M. Magliocchetti, P. Popesso, D. Rosario +27
By making use of Herschel-PEP observations of the COSMOS and Extended Groth Strip fields, we have estimated the dependence of the clustering properties of FIR-selected sources on t…
Molecular gas mass functions of normal star forming galaxies since z~3
S. Berta, D. Lutz, R. Nordon +7
We use deep far-infrared data from the PEP/GOODS-Herschel surveys and rest frame ultraviolet photometry to study the evolution of the molecular gas mass function of normal star for…
The Herschel PEP/HerMES Luminosity Function. I: Probing the Evolution of PACS selected Galaxies to z~4
C. Gruppioni, F. Pozzi, G. Rodighiero +100
We exploit the deep and extended far infrared data sets (at 70, 100 and 160 um) of the Herschel GTO PACS Evolutionary Probe (PEP) Survey, in combination with the HERschel Multi tie…
Nuclear Activity is more prevalent in Star-Forming Galaxies
D. J. Rosario, P. Santini, D. Lutz +14
We explore the question of whether low and moderate luminosity Active Galactic Nuclei (AGNs) are preferentially found in galaxies that are undergoing a transition from active star…
Simulations of the origin and fate of the Galactic Center cloud G2
M. Schartmann, A. Burkert, Ch. Alig +5
We investigate the origin and fate of the recently discovered gas cloud G2 close to the Galactic Center. Our hydrodynamical simulations focussing on the dynamical evolution of the…