Publications (414)
Constraints on the assembly and dynamics of galaxies. II. Properties of kiloparsec-scale clumps in rest-frame optical emission of z ~ 2 star-forming galaxies
N. M. Förster Schreiber, A. E. Shapley, R. Genzel +11
We study the properties of luminous stellar clumps identified in deep, high resolution HST/NIC2 F160W imaging at 1.6um of six z~2 star-forming galaxies with existing near-IR integr…
GRAVITY: The adaptive optics assisted, two object beam combiner for the VLTI
S. Gillessen, G. Perrin, W. Brandner +8
We present the adaptive optics assisted, near-infrared VLTI instrument - GRAVITY - for precision narrow-angle astrometry and interferometric phase referenced imaging of faint objec…
Evidence for X-ray synchrotron emission from simultaneous mid-IR to X-ray observations of a strong Sgr A* flare
K. Dodds-Eden, D. Porquet, G. Trap +22
This paper reports measurements of Sgr A* made with NACO in L' -band (3.80 um), Ks-band (2.12 um) and H-band (1.66 um) and with VISIR in N-band (11.88 um) at the ESO VLT, as well a…
A parameter survey of Sgr A* radiative models from GRMHD simulations with self-consistent electron heating
J. Dexter, A. Jiménez-Rosales, S. M. Ressler +13
The Galactic center black hole candidate Sgr A* is the best target for studies of low-luminosity accretion physics, including with near-infrared and submillimeter wavelength long b…
Herschel FIR counterparts of selected Ly-alpha emitters at z~2.2. Fast evolution since z~3 or missed obscured AGNs?
A. Bongiovanni, I. Oteo, J. Cepa +58
Ly-alpha emitters (LAEs) are seen everywhere in the redshift domain from local to z~7. Far-infrared (FIR) counterparts of LAEs at different epochs could provide direct clues on dus…
First Light for the GRAVITY+ Adaptive Optics: Extreme Adaptive Optics for the Very Large Telescope Interferometer
GRAVITY+ Collaboration, :, F. Allouche +137
GRAVITY+ improves by orders of magnitude the sensitivity, sky-coverage and contrast of the Very Large Telescope Interferometer (VLTI). A central part of this project is the develop…
MICADO: first light imager for the E-ELT
R. Davies, J. Schubert, M. Hartl +80
MICADO will equip the E-ELT with a first light capability for diffraction limited imaging at near-infrared wavelengths. The instrument's observing modes focus on various flavours o…
The structure of the nuclear stellar cluster of the Milky Way
R. Schoedel, A. Eckart, T. Alexander +8
We present high-resolution seeing limited and AO NIR imaging observations of the stellar cluster within about one parsec of Sgr A*, the massive black hole at the centre of the Milk…
Enhanced star formation rates in AGN hosts with respect to inactive galaxies from PEP-Herschel observations
P. Santini, D. J. Rosario, L. Shao +35
We compare the average star formation (SF) activity in X-ray selected AGN hosts with mass-matched control inactive galaxies,including star forming and quiescent sources, at 0.5<z<2…
Mid-infrared spectroscopy of two luminous submillimeter galaxies at z~2.8
D. Lutz, E. Valiante, E. Sturm +5
Using the Infrared Spectrograph (IRS) on board the Spitzer Space Telescope, we have obtained rest frame mid-infrared spectroscopy of two bright submillimeter galaxies. SMMJ02399-01…
The Position, Motion, and Mass of Sgr A*
M. J. Reid, K. M. Menten, R. Genzel +4
We report progress on measuring the position of Sgr A* on infrared images, placing limits on the motion of the central star cluster relative to Sgr A*, and measuring the proper mot…
Interferometric CO Observations of submillimeter-faint, radio-selected starburst galaxies at z~2
S. C. Chapman, R. Neri, F. Bertoldi +9
High-redshift, dust-obscured galaxies -- selected to be luminous in the radio but relatively faint at 850um -- appear to represent a different population from the ultra-luminous su…
Spectroscopic AGN survey at 2 with NTT/SOFI for GRAVITY+ observations
D. J. D. Santos, T. Shimizu, R. Davies +15
With the advent of GRAVITY+, the upgrade to the beam combiner GRAVITY at the Very Large Telescope Interferometer (VLTI), fainter and higher redshift active galactic nuclei (AGNs) a…
The first Herschel view of the mass-SFR link in high-z galaxies
G. Rodighiero, A. Cimatti, C. Gruppioni +37
We exploit deep observations of the GOODS-N field taken with PACS, on board of Herschel, as part of the PEP guaranteed time, to study the link between star formation and stellar ma…
The infrared L'-band view of the Galactic Center with NAOS-CONICA at VLT
Y. Clénet, D. Rouan, E. Gendron +9
We report on Galactic Center L'-band observations made during NAOS/CONICA Science Verification. Colors of the inner 2" stars reveal an infrared excess of S2, the closest star to th…
An interferometric CO survey of luminous submm galaxies
T. R. Greve, F. Bertoldi, Ian Smail +9
In this paper we present results from an IRAM Plateau de Bure millimetre-wave Interferometer (PdBI) survey for CO emission towards radio-detected submillimetre galaxies (SMGs) with…
A powerful flare from Sgr A* confirms the synchrotron nature of the X-ray emission
G. Ponti, E. George, S. Scaringi +21
We present the first fully simultaneous fits to the NIR and X-ray spectral slope (and its evolution) during a very bright flare from Sgr A*, the supermassive black hole at the Milk…
Broad [CII] line wings as tracer of molecular and multi-phase outflows in infrared bright galaxies
A. W. Janssen, N. Christopher, E. Sturm +13
We report a tentative correlation between the outflow characteristics derived from OH absorption at and [CII] emission at in a sample of 22 loca…
Relative depolarization of the black hole photon ring in GRMHD models of Sgr A* and M87*
A. Jiménez-Rosales, J. Dexter, S. M. Ressler +15
Using general relativistic magnetohydrodynamic simulations of accreting black holes, we show that a suitable subtraction of the linear polarization per pixel from total intensity i…
Flares from Sgr A* and their emission mechanism
K. Dodds-Eden, D. Porquet, G. Trap +12
We summarize recent observations and modeling of the brightest Sgr A* flare to be observed simultaneously in (near)-infrared and X-rays to date. Trying to explain the spectral char…
MOLsphere and pulsations of the Galactic Center's red supergiant GCIRS 7 from VLTI/GRAVITY
GRAVITY Collaboration, G. RodrÃguez-Coira, T. Paumard +55
GCIRS 7, the brightest star in the Galactic central parsec, formed Myr ago together with dozens of massive stars in a disk orbiting the central black-hole. It has been argu…
A geometric distance measurement to the Galactic Center black hole with 0.3% uncertainty
R. Abuter, A. Amorim, M. Bauboeck +51
We present a 0.16% precise and 0.27% accurate determination of R0, the distance to the Galactic Center. Our measurement uses the star S2 on its 16-year orbit around the massive bla…
Towards a resolved Kennicutt-Schmidt law at high redshift
J. Freundlich, F. Combes, L. J. Tacconi +16
Massive galaxies in the distant Universe form stars at much higher rates than today. Although direct resolution of the star forming regions of these galaxies is still a challenge,…
3D AMR simulations of G2 as an outflow
A. Ballone, M. Schartmann, A. Burkert +8
We study the evolution of G2 in a \textit{Compact Source Scenario}, where G2 is the outflow from a low-mass central star moving on the observed orbit. This is done through 3D AMR s…
Near-Infrared-Spectroscopy with Extremely Large Telescopes: Integral-Field- versus Multi-Object-Instruments
F. Eisenhauer, M. Tecza, N. Thatte +3
Integral-field-spectroscopy and multi-object-spectroscopy provide the high multiplex gain required for efficient use of the upcoming generation of extremely large telescopes. We pr…
Thick Disks, and an Outflow, of Dense Gas in the Nuclei of Nearby Seyfert Galaxies
Ming-Yi Lin, R. I. Davies, L. Burtscher +12
We discuss the dense molecular gas in central regions of nearby Seyfert galaxies, and report new arcsec resolution observations of HCN(1-0) and HCO(1-0) for 3 objects. In NGC 3…
GRAVITY+ Wavefront Sensors: High-Contrast, Laser Guide Star, Adaptive Optics systems for the VLTI
G. Bourdarot, F. Eisenhauer, S. Yazıcı +53
We present the Wavefront Sensor units of the Gravity Plus Adaptive Optics (GPAO) system, which will equip all 8m class telescopes of the VLTI and is an instrumental part of the GRA…
Clockwise Stellar Disk and the Dark Mass in the Galactic Center
A. M. Beloborodov, Y. Levin, F. Eisenhauer +4
Two disks of young stars have recently been discovered in the Galactic Center. The disks are rotating in the gravitational field of the central black hole at radii r=0.1-0.3 pc and…
Dissecting the cosmic infra-red background with Herschel/PEP
S. Berta, B. Magnelli, D. Lutz +34
The constituents of the cosmic IR background (CIB) are studied at its peak wavelengths (100 and 160 um) by exploiting Herschel/PACS observations of the GOODS-N, Lockman Hole, and C…
High contrast at short separation with VLTI/GRAVITY: Bringing Gaia companions to light
N. Pourré, T. O. Winterhalder, J. -B. Le Bouquin +173
Since 2019, GRAVITY has provided direct observations of giant planets and brown dwarfs at separations of down to 95 mas from the host star. Some of these observations have provided…
Molecular Gas Inflows and Outflows in Ultraluminous Infrared Galaxies at and one QSO at
R. Herrera-Camus, E. Sturm, J. Graciá-Carpio +12
Aims. We aim to search and characterize inflows and outflows of molecular gas in four ultraluminous infrared galaxies (ULIRGs) at and one distant QSO at . Me…
The Flare Activity of SgrA*; New Coordinated mm to X-Ray Observations
A. Eckart, F. K. Baganoff, R. Schoedel +17
We report new simultaneous near-infrared/sub-millimeter/X-ray observations of the SgrA* counterpart associated with the massive 3-4x10**6 solar mass black hole at the Galactic Cent…
A mid-infrared spectroscopic study of submillimeter galaxies: luminous starbursts at high redshift
E. Valiante, D. Lutz, E. Sturm +4
We present rest frame mid-infrared spectroscopy of a sample of 13 submillimeter galaxies, obtained using the Infrared Spectrograph (IRS) on board the Spitzer Space Telescope. The s…
The Role of Host Galaxy for the Environmental Dependence of Active Nuclei in Local Galaxies
R. I. Davies, E. K. S. Hicks, P. Erwin +22
We discuss the environment of local hard X-ray selected active galaxies, with reference to two independent group catalogues. We find that the fraction of these AGN in S0 host galax…
Lyman break and UV-selected galaxies at z ~ 1: II. PACS-100um/160um FIR detections
I. Oteo, G. Magdis, Ã. 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 Nature of Starburst Activity in M82
N. M. Forster Schreiber, R. Genzel, D. Lutz +1
We present new evolutionary synthesis models of M82 based mainly on observations consisting of near-infrared integral field spectroscopy and mid-infrared spectroscopy. The models i…
The Post-Pericenter Evolution of the Galactic Center Source G2
P. M. Plewa, S. Gillessen, O. Pfuhl +9
In early 2014 the fast-moving near-infrared source G2 reached its closest approach to the supermassive black hole Sgr A* in the Galactic Center. We report on the evolution of the i…
The G2+G2t complex as a fast and massive outflow?
A. Ballone, M. Schartmann, A. Burkert +8
Observations of the gas component of the cloud G2 in the Galactic Center have revealed its connection to a tail (G2t) lying on the same orbit. More recent studies indicate a connec…
Constraints on the Broad Line Region Properties and Extinction in Local Seyferts
Allan Schnorr-Müller, R. I. Davies, K. T. Korista +22
We use high spectral resolution (R > 8000) data covering 3800-13000Ã to study the physical conditions of the broad line region (BLR) of nine nearby Seyfert 1 galaxies. Up to six br…
Proposed identification of Hubble Deep Field submillimeter source HDF 850.1
D. Downes, R. Neri, A. Greve +23
The IRAM interferometer has been used to detect the submm source HDF 850.1 found by Hughes et al. (1998) in the Hubble Deep Field. The flux density measured at 1.3mm is 2.2 mJy, in…
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…
SINFONI Integral Field Spectroscopy of z~2 UV-selected Galaxies: Rotation Curves and Dynamical Evolution
N. M. Forster Schreiber, R. Genzel, M. D. Lehnert +14
We present 0.5" resolution near-IR integral field spectroscopy of the Ha line emission of 14 z~2 UV-selected BM/BX galaxies obtained with SINFONI at ESO/VLT. The mean Ha half-light…
The Nuclear Gas Dynamics and Star Formation of Markarian 231
R. I. Davies, L. J. Tacconi, R. Genzel
We report adaptive optics H- and K-band spectroscopy of the inner few arcsec of the luminous merger/ULIRG/QSO Mkn231, at spatial resolutions as small as 0.085". For the first time…
Multi-Conjugate Adaptive Optics with Laser Guide Stars
R. I. Davies, D. Bonaccini, S. Rabien +8
The Laser Guide Star Facility for the VLT will be commissioned during 2003. This, of course, can only be the first step towards enhancing the scientific output of the VLT through a…
3D AMR hydrosimulations of a compact source scenario for the Galactic Centre cloud G2
A. Ballone, M. Schartmann, A. Burkert +8
The nature of the gaseous and dusty cloud G2 in the Galactic Centre is still under debate. We present three-dimensional hydrodynamical adaptive mesh refinement (AMR) simulations of…
Stellar dynamics observations of a double nucleus in M 83
N. Thatte, M. Tecza, R. Genzel
We report on the discovery of a double nucleus in M 83, based on measurements of the line of sight velocity distribution of stars observed at near infrared wavelengths with the VLT…
GRAVITY+ Wide: Towards hundreds of z 2 AGN
A. Drescher, M. Fabricius, T. Shimizu +34
As part of the GRAVITY project, the near-infrared beam combiner GRAVITY and the VLTI are currently undergoing a series of significant upgrades to further improve the performa…
The SINS/zC-SINF survey of z~2 galaxy kinematics: evidence for gravitational quenching
R. Genzel, N. M. Förster Schreiber, P. Lang +25
As part of the SINS/zC-SINF surveys of high-z galaxy kinematics, we derive the radial distributions of H-alpha surface brightness, stellar mass surface density, and dynamical mass…
Unveiling Far-Infrared Counterparts of Bright Submillimeter Galaxies Using PACS Imaging
H. Dannerbauer, E. Daddi, G. E. Morrison +35
We present a search for Herschel-PACS counterparts of dust-obscured, high-redshift objects previously selected at submillimeter and millimeter wavelengths in the Great Observatorie…
A Deep HST H-Band Imaging Survey of Massive Gas-Rich Mergers. II. The QUEST PG QSOs
S. Veilleux, D. -C. Kim, D. S. N. Rupke +11
We report the results from a deep HST NICMOS H-band imaging survey of 28 z < 0.3 QSOs from the Palomar-Green (PG) sample. This program is part of QUEST (Quasar / ULIRG Evolution ST…
Herschel PEP: The star-formation rates of 1.5<z<2.5 massive galaxies
R. Nordon, D. Lutz, L. Shao +31
The star formation rate (SFR) is a key parameter in the study of galaxy evolution. The accuracy of SFR measurements at z~2 has been questioned following a disagreement between obse…
Star Formation and Molecular Gas in AGN
R. Davies, R. Genzel, L. Tacconi +2
We present initial results from a survey of nearby AGN using the near infrared adaptive optics integral field spectrograph SINFONI. These data enable us to probe the distribution a…
GCIRS34W: An irregular variable in the Galactic Centre
S. Trippe, F. Martins, T. Ott +7
We report the results of time-resolved photometric and spectroscopic near-infrared observations of the Ofpe/WN9 star and LBV candidate GCIRS34W in the Galactic Centre star cluster.…
Physical properties of dense molecular gas in centres of Seyfert galaxies
E. Sani, R. I. Davies, A. Sternberg +10
We present new ~1" resolution data of the dense molecular gas in the central 50-100 pc of four nearby Seyfert galaxies. PdBI observations of HCN and, in 2 of the 4 sources, simulta…
A 1.4 GHz Survey of the Southern ELAIS Region
C. Gruppioni, P. Ciliegi, M. Rowan-Robinson +13
A deep survey of the European Large Area ISO Survey (ELAIS) field in the southern celestial hemisphere (hereinafter S1) has been carried out with the Australia Telescope Compact Ar…
The SINS/zC-SINF survey of z~2 galaxy kinematics: SINFONI adaptive optics-assisted data and kiloparsec-scale emission line properties
N. M. Förster Schreiber, A. Renzini, C. Mancini +29
We present the "SINS/zC-SINF AO survey" of 35 star-forming galaxies, the largest sample with deep adaptive optics-assisted (AO) near-infrared integral field spectroscopy at z~2. Th…
The GRAVITY young stellar object survey III. The dusty disk of RY Lup
GRAVITY Collaboration, Y. -I. Bouarour, K. Perraut +55
We use PIONIER data from the ESO archive and GRAVITY data that were obtained in June 2017 with the four 8m telescopes. We use a parametric disk model and the 3D radiative transfer…
Ionized outflows in local luminous AGN: what are the real densities and outflow rates?
R. Davies, D. Baron, T. Shimizu +23
We report on the determination of electron densities, and their impact on the outflow masses and rates, measured in the central few hundred parsecs of 11 local luminous active gala…
First VLTI/GRAVITY Observations of HIP 65426 b: Evidence for a Low or Moderate Orbital Eccentricity
S. Blunt, W. O. Balmer, J. J. Wang +95
Giant exoplanets have been directly imaged over orders of magnitude of orbital separations, prompting theoretical and observational investigations of their formation pathways. In t…
Spectroscopic FIR mapping of the disk and galactic wind of M82 with Herschel-PACS
A. Contursi, A. Poglitsch, J. Graciá-Carpio +11
[Abridged] We present maps of the main cooling lines of the neutral atomic gas ([OI] at 63 and 145 micron and [CII] at 158 micron) and in the [OIII] 88 micron line of the starburst…
PEP: first Herschel probe of dusty galaxy evolution up to z~3
C. Gruppioni, F. Pozzi, P. Andreani +32
We exploit the deepest existing far-infrared (FIR) data obtained so far by Herschel at 100 and 160 um in the GOODS-N, as part of the PACS Evolutionary Probe (PEP) survey, to derive…
PHIBSS: Unified Scaling Relations of Gas Depletion Time and Molecular Gas Fractions
L. J. Tacconi, R. Genzel, A. Saintonge +32
This paper provides an update of our previous scaling relations (Genzel et al.2015) between galaxy integrated molecular gas masses, stellar masses and star formation rates, in the…
Constraints on the Orbit of the Young Substellar Companion GQ Lup B from High-Resolution Spectroscopy and VLTI/GRAVITY Astrometry
Vidya Venkatesan, S. Blunt, J. J. Wang +99
Understanding the orbits of giant planets is critical for testing planet formation models, particularly at wide separations greater than 10 au where traditional core accretion beco…
Near-infrared Integral Field Spectroscopy and Mid-infrared Spectroscopy of the Starburst Galaxy M82
N. M. Forster Schreiber, R. Genzel, D. Lutz +2
We present new observations of the central regions of the starburst galaxy M82 consisting of near-infrared H- and K-band integral field spectroscopy from the MPE 3D instrument, and…
Infrared spectroscopy of NGC 4151: ISO observations and NLR line profiles
E. Sturm, T. Alexander, D. Lutz +3
We present ISO-SWS and ISOPHOT-S spectroscopy of the Seyfert galaxy NGC 4151. We detect a total of 17 fine structure emission lines emitted by a wide range of low- and high-excitat…
GRAVITY: getting to the event horizon of Sgr A*
F. Eisenhauer, G. Perrin, W. Brandner +45
We present the second-generation VLTI instrument GRAVITY, which currently is in the preliminary design phase. GRAVITY is specifically designed to observe highly relativistic motion…
CII Emission From NGC 4038/39 (The Antennae)
T. Nikola, R. Genzel, F. Herrmann +5
We present observations of NGC 4038/39 in the [CII] 158 micron fine structure line taken with the MPE/UCB Far-infrared Imaging Fabry-Perot Interferometer (FIFI) on the KAO with 55"…
A dynamical measure of the black hole mass in a quasar 11 billion years ago
R. Abuter, F. Allouche, A. Amorim +124
Tight relationships exist in the local universe between the central stellar properties of galaxies and the mass of their supermassive black hole. These suggest galaxies and black h…
Obscuration in AGNs: near-infrared luminosity relations and dust colors
L. Burtscher, G. Orban de Xivry, R. I. Davies +11
We combine two approaches to isolate the AGN luminosity at near-infrared wavelengths and relate the near-IR pure AGN luminosity to other tracers of the AGN. Using integral-field sp…
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…
Combining Gaia and GRAVITY: Characterising five new Directly Detected Substellar Companions
T. O. Winterhalder, S. Lacour, A. Mérand +96
Precise mass constraints are vital for the characterisation of brown dwarfs and exoplanets. Here we present how the combination of data obtained by Gaia and GRAVITY can help enlarg…
Prospects for testing the nature of Sgr A*'s NIR flares on the basis of current VLT- and future VLTI-observations
N. Hamaus, T. Paumard, T. Müller +4
Sagittarius A*, the supermassive compact object at the center of the Galaxy, exhibits outbursts in the near infrared and X-ray domains. These flares are likely due to energetic eve…
Properties of mm galaxies: Constraints from K-band blank fields
H. Dannerbauer, M. D. Lehnert, D. Lutz +5
We have used the IRAM Plateau de Bure mm interferometer to locate with subarcsecond accuracy the dust emission of three of the brightest 1.2mm sources in the NTT Deep Field (NDF) s…
Dynamical properties of Ultraluminous Infrared Galaxies I: Mass ratio conditions for ULIRG activity in interacting pairs
K. M. Dasyra, L. J. Tacconi, R. I. Davies +6
We present first results from our Very Large Telescope large program to study the dynamical evolution of Ultraluminous Infrared Galaxies (ULIRGs), which are the products of mergers…
Counterrotating Nuclear Disks in Arp 220
K. Sakamoto, N. Z. Scoville, M. S. Yun +3
The ultraluminous infrared galaxy Arp 220 has been observed at 0.5" resolution in CO(2-1) and 1 mm continuum using the newly expanded Owens Valley Millimeter Array. The CO and cont…
An ISO survey of PAH features in Ultraluminous Infrared Galaxies
D. Lutz, R. Genzel, D. Rigopoulou +3
We have obtained ISOPHOT-S low resolution mid-infrared spectra of a sample of 60 Ultraluminous Infrared Galaxies (ULIRGs). We use the strength of the `PAH' mid-infrared features as…
A kiloparsec view of a typical star-forming galaxy when the Universe was ~1 Gyr old. Part I. Outflow, halo, and interstellar medium properties
R. Herrera-Camus, N. Förster Schreiber, R. Genzel +9
We present new Atacama Large Millimeter/Submillimeter Array (ALMA) observations of the [CII] 158 m transition and the dust continuum in HZ4, a typical star-forming galaxy when…
Monitoring stellar orbits around the Massive Black Hole in the Galactic Center
S. Gillessen, F. Eisenhauer, S. Trippe +4
We present the results of 16 years of monitoring stellar orbits around the massive black hole in center of the Milky Way using high resolution NIR techniques. This work refines our…
Massive star formation and evolution in starburst galaxies: mid-infrared spectroscopy with ISO-SWS
M. D. Thornley, N. M. Forster-Schreiber, D. Lutz +4
We present new ISO-SWS data for a sample of 27 starburst galaxies, and with these data examine the issues of formation and evolution of the most massive stars in starburst galaxies…
Dust emission from the lensed Lyman break galaxy cB58
A. J. Baker, D. Lutz, R. Genzel +2
We detect 1.2mm continuum emission from dust in the gravitationally lensed Lyman break galaxy MS 1512+36-cB58. Our detected flux is surprisingly low: relative to local starburst ga…
Adaptive optics near infrared integral field spectroscopy of NGC 2992
S. Friedrich, R. I. Davies, E. K. S. Hicks +4
NGC 2992 is an intermediate Seyfert 1 galaxy showing outflows on kilo parsec scales which might be due either to AGN or starburst activity. We therefore aim at investigating its ce…
Stellar and Molecular Gas Kinematics of NGC1097: Inflow Driven by a Nuclear Spiral
R. Davies, W. Maciejewski, E. Hicks +3
We present spatially resolved distributions and kinematics of the stars and molecular gas in the central 320pc of NGC1097. The stellar continuum confirms the previously reported 3-…
First direct detection of an exoplanet by optical interferometry; Astrometry and K-band spectroscopy of HR8799 e
S. Lacour, M. Nowak, J. Wang +85
To date, infrared interferometry at best achieved contrast ratios of a few times on bright targets. GRAVITY, with its dual-field mode, is now capable of high contrast obs…
Stellar Orbits Near Sagittarius A*
A. Eckart, R. Genzel, T. Ott +1
We present new SHARP/NTT stellar proper motion and accelaration data covering an interval from 1992 to 2000: 1) We combine the high precision but shorter time scale NIRC/Keck data…
GRAVITY faint: reducing noise sources in GRAVITY with a fast metrology attenuation system
F. Widmann, S. Gillessen, T. Ott +28
With the upgrade from GRAVITY to GRAVITY the instrument will evolve into an all-sky interferometer that can observe faint targets, such as high redshift AGN. Observing the fain…
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…
Herschel-PACS spectroscopy of IR-bright galaxies at high redshift
E. Sturm, A. Verma, J. Graciá-Carpio +11
We present Herschel-PACS observations of rest-frame mid-infrared and far-infrared spectral line emissions from two lensed, ultra-luminous infrared galaxies at high redshift: MIPS J…
Falling outer rotation curves of star-forming galaxies at 0.6 < z < 2.6 probed with KMOS^3D and SINS/ZC-SINF
P. Lang, N. M. Förster Schreiber, R. Genzel +25
We exploit the deep resolved Halpha kinematic data from the KMOS^3D and SINS/zC-SINF surveys to examine the largely unexplored outer disk kinematics of star-forming galaxies (SFGs)…
Infrared spectroscopy of faint 15 micron sources in the Hubble Deep Field South: first hints at the properties of the sources of the IR background
A. Franceschini, S. Berta, D. Rigopoulou +8
We present a spectroscopic analysis of 21 galaxies with z=0.2-1.5 drawn from a 25 sq. arcmin ultra-deep 15 micron ISOCAM survey centered in the HDFS. VLT/ISAAC spectra are reported…
Host dynamics and origin of Palomar-Green QSOs
K. M. Dasyra, L. J. Tacconi, R. I. Davies +7
We present host-galaxy velocity dispersions of 12 local (mainly Palomar-Green) quasi-stellar objects (QSOs) measured directly from the stellar CO absorption features in the H band.…
VLTI observations of IRS~3: The brightest compact MIR source at the Galactic Centre
J. -U. Pott, A. Eckart, A. Glindemann +7
The dust enshrouded star IRS~3 in the central light year of our galaxy was partially resolved in a recent VLTI experiment. The presented observation is the first step in investigat…
Nuclear Dynamics and Star Formation of AGN
R. Davies, L. Tacconi, R. Genzel +1
We are using adaptive optics on Keck and the VLT to probe the dynamics and star formation in Seyfert and QSO nuclei, obtaining spatial resolutions better than 0.1" in the H- and K-…
First Light for GRAVITY: Phase Referencing Optical Interferometry for the Very Large Telescope Interferometer
GRAVITY Collaboration, R. Abuter, M. Accardo +130
GRAVITY is a new instrument to coherently combine the light of the European Southern Observatory Very Large Telescope Interferometer to form a telescope with an equivalent 130 m di…
KMOS^3D: Dynamical constraints on the mass budget in early star-forming disks
S. Wuyts, N. M. Förster Schreiber, E. Wisnioski +26
We exploit deep integral-field spectroscopic observations with KMOS/VLT of 240 star-forming disks at 0.6 < z < 2.6 to dynamically constrain their mass budget. Our sample consists o…
Combined CO & Dust Scaling Relations of Depletion Time and Molecular Gas Fractions with Cosmic Time, Specific Star Formation Rate and Stellar Mass
R. Genzel, L. J. Tacconi, D. Lutz +33
We combine molecular gas masses inferred from CO emission in 500 star forming galaxies (SFGs) between z=0 and 3, from the IRAM-COLDGASS, PHIBSS1/2 and other surveys, with gas masse…
The Flux Distribution of Sgr A*
The GRAVITY Collaboration, R. Abuter, A. Amorim +54
The Galactic Center black hole Sagittarius A* is a variable NIR source that exhibits bright flux excursions called flares. The low-flux density turnover of the flux distribution is…
Variations in the spectral slope of Sgr A* during a NIR flare
S. Gillessen, F. Eisenhauer, E. Quataert +10
We have observed a bright flare of Sgr A* in the near infrared with the adaptive optics assisted integral field spectrometer SINFON. Within the uncertainties, the observed spectrum…
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…
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…
The regulation of galaxy growth along the size-mass relation by star-formation, as traced by H in KMOS galaxies at 0.7 < z < 2.7
D. J. Wilman, M. Fossati, J. T. Mendel +24
We present half-light sizes measured from H emission tracing star-formation in 281 star-forming galaxies from the KMOS3D survey at 0.7 < z < 2.7. Sizes are derived by fitting 2…