Publications (216)
Modeling He-rich subdwarfs through the hot-flasher scenario (brief version)
M. M. Miller Bertolami, L. G. Althaus, K. Unglaub +1
We present 1D numerical simulations aimed at studying the hot-flasher scenario for the formation of He-rich subdwarf stars. Sequences were calculated for a wide range of metallicit…
Multi-Transition Study of M51's Molecular Gas Spiral Arms
E. Schinnerer, A. Weiss, S. Aalto +1
Two selected regions in the molecular gas spiral arms in M51 were mapped with the Owens Valley Radio Observatory (OVRO) mm-interferometer in the 12CO(2-1), 13CO(1-0), C18O(1-0), HC…
Influence of two updated nuclear reaction rates on the evolution of low and intermediate mass stars
A. Weiss, A. Serenelli, A. Kitsikis +2
Two key reactions of hydrostatic nuclear burning in stars have recently been revised by new experimental data - the 14N(p,gamma)15O and triple alpha reaction rates. We investigate…
The molecular circumnuclear disk (CND) in Centaurus A: A multi-transition CO and [CI] survey with Herschel, APEX, JCMT, and SEST
F. P. Israel, R. Guesten, R. Meijerink +8
We present new CO and C^o line measurements of the compact circumnuclear disk in the center of NGC 128 (Centaurus~A) obtained with the Herschel Space Observatory, as well as SEST,…
An ALMA survey of sub-millimeter galaxies in the Extended Chandra Deep Field South: Sub-millimeter properties of color-selected galaxies
R. Decarli, I. Smail, F. Walter +16
We study the sub-mm properties of color-selected galaxies via a stacking analysis applied for the first time to interferometric data at sub-mm wavelengths. We base our study on 344…
CONCERTO: High-fidelity simulation of millimeter line emissions of galaxies and [CII] intensity mapping
M. Bethermin, A. Gkogkou, M. Van Cuyck +27
The intensity mapping of the [CII] 158um line redshifted to the sub-mm window is a promising probe of the z>4 star formation and its spatial distribution into the large-scale struc…
H2O emission in high-z ultra-luminous infrared galaxies
A. Omont, Chentao Yang, P. Cox +47
Using IRAM PdBI we report the detection of H2O in six new lensed ultra-luminous starburst galaxies at high redshift, discovered in the Herschel H-ATLAS survey. The sources are dete…
On the absolute age of the Globular Cluster M92
A. Di Cecco, R. Becucci, G. Bono +15
We present precise and deep optical photometry of the globular M92. Data were collected in three different photometric systems: Sloan Digital Sky Survey (g',r',i',z'; MegaCam@CFHT)…
Using [CI] to probe the Interstellar Medium in z~2.5 Sub-Millimeter Galaxies
S. Alaghband-Zadeh, S. C. Chapman, A. M. Swinbank +7
We present new [CI](1-0) and 12CO(4-3) Plateau de Bure Interferometer observations of five Sub-Millimeter Galaxies (SMGs) and combine these with all available [CI](1-0) literature…
Revealing the Stellar Mass and Dust Distributions of Submillimeter Galaxies at Redshift 2
P. Lang, E. Schinnerer, Ian Smail +35
We combine high-resolution ALMA and HST/CANDELS observations of 20 submillimeter galaxies (SMGs) predominantly from the AS2UDS survey at z~2 with bright rest-frame optical counterp…
Evolution of low-mass metal-free stars including effects of diffusion and external pollution
A. Weiss, S. Cassisi, H. Schlattl +1
We investigate the evolution of low-mass metal-free Population III stars. Emphasis is laid upon the question of internal and external sources for CNO-elements, which - if present i…
The LABOCA survey of the Extended Chandra Deep Field South - radio and mid-infrared counterparts to submillimetre galaxies
A. D. Biggs, R. J. Ivison, E. Ibar +13
We present radio and infrared (3.6-24um) counterparts to submillimetre galaxies (SMGs) detected in the Extended Chandra Deep Field South with the LABOCA 870-um bolometer camera on…
Galaxy growth in a massive halo in the first billion years of cosmic history
D. P. Marrone, J. S. Spilker, C. C. Hayward +34
According to the current understanding of cosmic structure formation, the precursors of the most massive structures in the Universe began to form shortly after the Big Bang, in reg…
ALMA observations of cool dust in a low-metallicity starburst, SBS0335-052
L. K. Hunt, L. Testi, V. Casasola +9
We present Atacama Large Millimeter/submillimeter Array (ALMA) Cycle 0 Band 7 observations of an extremely metal-poor dwarf starburst galaxy in the Local Universe, SBS0335-052 (12+…
The LABOCA Survey of the Extended Chandra Deep Field South
A. Weiss, A. Kovacs, K. Coppin +22
We present a sensitive 870 micron survey of the Extended Chandra Deep Field South (ECDFS) using LABOCA on the APEX telescope. The LABOCA ECDFS Submillimetre Survey (LESS) covers th…
VLBI observations of SN 2008iz: I. Expansion velocity and limits on anisotropic expansion
A. Brunthaler, I. Marti-Vidal, K. M. Menten +9
We present observations of the recently discovered supernova 2008iz in M82 with the VLBI High Sensitivity Array at 22 GHz, the Very Large Array at frequencies of 1.4, 4.8, 8.4, 22…
Constraints on the High-l Power Spectrum of Millimeter-wave Anisotropies from APEX-SZ
C. L. Reichardt, O. Zahn, P. A. R. Ade +27
We present measurements of the angular power spectrum of millimeter wave anisotropies with the APEX-SZ instrument. APEX-SZ has mapped 0.8 square degrees of sky at a frequency of 15…
The LABOCA Survey of the Extended Chandra Deep Field South: Clustering of submillimetre galaxies
Ryan C. Hickox, J. L. Wardlow, Ian Smail +12
We present a measurement of the spatial clustering of submillimetre galaxies (SMGs) at z = 1-3. Using data from the 870 micron LESS survey, we employ a novel technique to measure t…
Evolution of planetary nebulae II. Population effects on the bright cut-off of the PNLF
P. Marigo, L. Girardi, A. Weiss +2
We investigate the bright cut-off of the [OIII]l5007 planetary nebula luminosity function (PNLF), that has been suggested as a powerful extragalactic distance indicator. Theoretica…
LEGO II: A 3 mm molecular line study covering 100 pc of one of the most actively star-forming portions within the Milky Way Disc
A. T. Barnes, J. Kauffmann, F. Bigiel +20
The current generation of (sub)mm-telescopes has allowed molecular line emission to become a major tool for studying the physical, kinematic, and chemical properties of extragalact…
Far infrared constraints on the contamination by dust obscured galaxies of high-z dropout searches
F. Boone, D. Schaerer, R. Pello +23
The spectral energy distributions (SED) of dusty galaxies at intermediate redshift may look similar to very high redshift galaxies in the optical/near infrared (NIR) domain. This c…
The LABOCA survey of the Extended Chandra Deep Field South: A photometric redshift survey of submillimetre galaxies
J. L. Wardlow, Ian Smail, K. E. K. Coppin +23
[abridged] We derive photometric redshifts from 17-band optical to mid-IR photometry of 74 robust counterparts to 68 of the 126 submillimetre galaxies (SMGs) selected at 870um by L…
Red Giant Branch stars: the theoretical framework
M. Salaris, S. Cassisi, A. Weiss
Theoretical predictions of Red Giant Branch stars' effective temperatures, colors, luminosities and surface chemical abundances are a necessary tool for the astrophysical interpret…
Is the core mass-luminosity relation violated by the occurrence of the third dredge-up ?
P. Marigo, L. Girardi, A. Weiss +1
The core mass-luminosity (Mc-L) relation of TP-AGB stars is a key ingredient in synthetic calculations of their evolution. Recently, Herwig et al. (1998) have presented full calcul…
A Collection of German Science Interests in the Next Generation Very Large Array
M. Kadler, D. A. Riechers, J. Agarwal +88
The Next Generation Very Large Array (ngVLA) is a planned radio interferometer providing unprecedented sensitivity at wavelengths between 21 cm and 3 mm. Its 263 antenna element ar…
Deep submillimeter and radio observations in the SSA22 field. I. Powering sources and Lyα escape fraction of Lyα blobs
Y. Ao, Y. Matsuda, C. Henkel +22
We study the heating mechanisms and Lyα escape fractions of 35 Lyα blobs (LABs) at z = 3.1 in the SSA22 field. Dust continuum sources have been identified in 11 of the 35 LABs, a…
Stellar ages and convective cores in field main-sequence stars: first asteroseismic application to two Kepler targets
V. Silva Aguirre, S. Basu, I. M. Brandão +21
Using asteroseismic data and stellar evolution models we make the first detection of a convective core in a Kepler field main-sequence star, putting a stringent constraint on the t…
Measurements of the dust properties in z~1-3 SMGs with ALMA
E. da Cunha, J. A. Hodge, C. M. Casey +13
We present Atacama Large Millimetre Array (ALMA) 2mm continuum observations of a complete and unbiased sample of 99 870micron-selected sub-millimeter galaxies (SMGs) in the Extende…
The core helium flash revisited: II. Two and three-dimensional hydrodynamic simulations
M. Mocak, E. Mueller, A. Weiss +1
We study turbulent convection during the core helium flash close to its peak by comparing the results of two and three-dimensional hydrodynamic simulations. We use a multidimension…
New insights on the dense molecular gas in NGC253 as traced by HCN and HCO+
K. K. Knudsen, F. Walter, A. Weiss +3
We have imaged the central ~1kpc of the circumnuclear starburst disk in the galaxy NGC253 in the HCN(1-0), HCO+(1-0), and CO(1-0) transitions at 60pc resolution using the Owens Val…
Standard and Non-Standard Plasma Neutrino Emission Revisited
M. Haft, G. Raffelt, A. Weiss
On the basis of Braaten and Segel's representation of the electromagnetic dispersion relations in a QED plasma we check the numerical accuracy of several published analytic approxi…
SPT 0538-50: Physical conditions in the ISM of a strongly lensed dusty star-forming galaxy at z=2.8
M. S. Bothwell, J. E. Aguirre, S. C. Chapman +38
We present observations of SPT-S J053816-5030.8, a gravitationally-lensed dusty star forming galaxy (DSFG) at z = 2.7817, first discovered at millimeter wavelengths by the South Po…
Models for extremely metal-poor halo stars
A. Weiss, H. Schlattl, M. Salaris +2
Two alternative scenarios concerning the origin and evolution of extremely metal-poor halo stars are investigated. The first one assumes that the stars have been completely metal-f…
A Sensitive Search For [NII] Emission in a z=6.4 Quasar Host Galaxy
F. Walter, A. Weiss, D. A. Riechers +4
We present a sensitive search for the ^3P_1->^3P_0 ground state fine structure line at 205 microns of ionized nitrogen ([NII]) in one of the highest redshift quasars (J1148+5251 at…
Highly-excited CO emission in APM08279+5255 at z=3.9
A. Weiss, D. Downes, R. Neri +5
We report the detection of the CO 4-3, 6-5, 9-8, 10-9, and 11-10 lines in the Broad Absorption Line quasar APM08279+5255 at z=3.9 using the IRAM 30m telescope. We also present IRAM…
The CO line SED and atomic carbon in IRAS F10214+4724
Y. Ao, A. Weiss, D. Downes +3
Using the IRAM 30m telescope and the Plateau de Bure interferometer we have detected the \ctwo and the CO 32, 43, 65, 76 transitions as well as the dust continuum at 3…
Stellar Evolution and Variability in the Pre-ZAHB Phase
V. Silva Aguirre, M. Catelan, A. Weiss +1
One of the most dramatic events in the life of a low-mass star is the He flash, which takes place at the tip of the RGB and is followed by a series of secondary flashes before the…
HIFI spectroscopy of low-level water transitions in M82
A. Weiss, M. A. Requena-Torres, R. Guesten +23
We present observations of the rotational ortho-water ground transition, the two lowest para-water transitions, and the ground transition of ionised ortho-water in the archetypal s…
The EDGE-CALIFA survey: exploring the role of the molecular gas on the galaxy star formation quenching
D. Colombo, S. F. Sanchez, A. D. Bolatto +11
Understanding how galaxies cease to form stars represents an outstanding challenge for galaxy evolution theories. This process of "star formation quenching" has been related to var…
Submillimeter Observations of Millimeter Bright Galaxies Discovered by the South Pole Telescope
T. R. Greve, J. D. Vieira, A. Weiss +65
We present APEX SABOCA 350micron and LABOCA 870micron observations of 11 representative examples of the rare, extremely bright (S_1.4mm > 15mJy), dust-dominated millimeter-selected…
The effect of violent star formation on the state of the molecular gas in M82
A. Weiss, N. Neininger, S. Huettemeister +1
We present the results of a high angular resolution, multi-transition analysis of the molecular gas in M82. The analysis is based on the two lowest transitions of 12CO and the grou…
Observations of neutral carbon in 29 high-z lensed dusty star forming galaxies and the comparison of gas mass tracers
G. Gururajan, M. Béthermin, N. Sulzenauer +10
The nature and evolution of high-redshift dusty star-forming galaxies (high-z DSFGs) remain an open question. Their massive gas reservoirs play an important role in driving the int…
The innermost region of the water megamaser radio galaxy 3C403
A. Tarchi, A. Brunthaler, C. Henkel +3
The standard unified scheme of active galactic nuclei requires the presence of high column densities of gas and dust potentially obscuring the central engine. So far, few direct su…
The Rest-Frame Submillimeter Spectrum of High-Redshift, Dusty, Star-Forming Galaxies
J. S. Spilker, D. P. Marrone, J. E. Aguirre +28
We present the average rest-frame spectrum of high-redshift dusty, star-forming galaxies from 250-770GHz. This spectrum was constructed by stacking ALMA 3mm spectra of 22 such sour…
The impact of type Ia supernovae on main sequence binary companions
R. Pakmor, F. K. Roepke, A. Weiss +1
The nature of Type Ia supernova progenitors is still unclear. The outstanding characteristic of the single-degenerate scenario is that it contains hydrogen in the binary companion…
Chemical anomalies in globular cluster red giant stars and the "second parameter" problem
C. Charbonnel, P. A. Denissenkov, A. Weiss
We present the evolution of low mass and low metallicity RGB models computed under the assumption of deep mixing between the convective envelope and the hydrogen burning shell. We…
Evidence for Low Extinction in Actively Star Forming Galaxies at z6.5
F. Walter, R. Decarli, C. Carilli +9
We present a search for the [CII] 158micron fine structure line (a main cooling line of the interstellar medium) and the underlying far-infrared (FIR) continuum in three high-redsh…
The most distant, luminous, dusty star-forming galaxies: redshifts from NOEMA and ALMA spectral scans
Y. Fudamoto, R. J. Ivison, I. Oteo +23
We present 1.3- and/or 3-mm continuum images and 3-mm spectral scans, obtained using NOEMA and ALMA, of 21 distant, dusty, star-forming galaxies (DSFGs). Our sample is a subset of…
Sub-kiloparsec Imaging of Cool Molecular Gas in Two Strongly Lensed Dusty, Star-Forming Galaxies
J. S. Spilker, M. Aravena, D. P. Marrone +20
We present spatially-resolved imaging obtained with the Australia Telescope Compact Array (ATCA) of three CO lines in two high-redshift gravitationally lensed dusty star-forming ga…
ALMA reveals potential evidence for spiral arms, bars, and rings in high-redshift submillimeter galaxies
J. A. Hodge, I. Smail, F. Walter +20
We present sub-kpc-scale mapping of the 870 m ALMA continuum emission in six luminous ( L) submillimeter galaxies (SMGs) from the ALE…
Galois structure of S-units
D. Riveros, A. Weiss
Let K/k be a finite Galois extension of number fields with Galois group G, S a large set of primes of K, and E the G-module of S-units of K. Previous work has determined the data w…
Fine structure of the red giant clump from HIPPARCOS data, and distance determinations based on its mean magnitude
L. Girardi, M. A. T. Groenewegen, A. Weiss +1
The I-band brightness of clump stars has been used recently to determine the distance to the bulge, the LMC and SMC, and to M31. It was assumed to be a standard candle based on the…
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…
The dust and [CII] morphologies of redshift ~4.5 sub-millimeter galaxies at ~200pc resolution: The absence of large clumps in the interstellar medium of high-redshift galaxies
B. Gullberg, A. M. Swinbank, I. Smail +27
We present deep high resolution (0.03", 200pc) ALMA Band 7 observations covering the dust continuum and [CII] m emission in four sub-millimeter galax…
Modelling CO emission from hydrodynamic simulations of nearby spirals, starbursting mergers, and high-redshift galaxies
F. Bournaud, E. Daddi, A. Weiss +3
We model the intensity of emission lines from the CO molecule, based on hydrodynamic simulations of spirals, mergers, and high-redshift galaxies with very high resolutions (3pc and…
Molecular gas in NGC6946
W. Walsh, R. Beck, G. Thuma +3
We present imaging of molecular gas emission in the star-forming spiral galaxy NGC6946. Our CO(1-0) and CO(3-2) images, made at 22" resolution with the IRAM 30-m and the Heinrich H…
Fast Molecular Outflow from a Dusty Star-Forming Galaxy in the Early Universe
J. S. Spilker, M. Aravena, M. Bethermin +20
Galaxies grow inefficiently, with only a few percent of the available gas converted into stars each free-fall time. Feedback processes, such as outflowing winds driven by radiation…
The LABOCA survey of the Extended Chandra Deep Field South: Two modes of star formation in AGN hosts?
D. Lutz, V. Mainieri, D. Rafferty +23
We study the co-existence of star formation and AGN activity in X-ray selected AGN by analyzing stacked 870um submm emission from a deep and wide map of the Extended Chandra Deep F…
The puzzling theoretical predictions for the luminosity of clumping He burning stars
V. Castellani, S. Degl'Innocenti, L. Girardi +3
This paper deals with theoretical predictions for He burning models in a range of masses covering the so-called Red Giant Branch phase transition. Taking as a guideline the observa…
Why did Comet 17P/Holmes burst out?
W. J. Altenhoff, E. Kreysa, K. M. Menten +3
Based on millimeter-wavelength continuum observations we suggest that the recent 'spectacle' of comet 17P/Holmes can be explained by a thick, air-tight dust cover and the effects o…
Physical Conditions of the Gas in an ALMA [CII]-identified Submillimetre Galaxy at z = 4.44
M. T. Huynh, R. P. Norris, K. E. K. Coppin +18
We present CO(2-1) observations of the submillimetre galaxy ALESS65.1 performed with the Australia Telescope Compact Array at 42.3 GHz. A previous ALMA study of submillimetre galax…
NOEMA redshift measurements of bright Herschel galaxies
R. Neri, P. Cox, A. Omont +31
Using the IRAM NOrthern Extended Millimeter Array (NOEMA), we conducted a program to measure redshifts for 13 bright galaxies detected in the Herschel Astrophysical Large Area Surv…
The space density of luminous dusty star-forming galaxies at : SCUBA-2 and LABOCA imaging of ultrared galaxies from -ATLAS
R. J. Ivison, A. J. R. Lewis, A. Weiss +28
Until recently, only a handful of dusty, star-forming galaxies (DSFGs) were known at , most of them significantly amplified by gravitational lensing. Here, we have increased t…
Time-Variation of Newton's Constant and the Age of Globular Clusters
S. Degl'Innocenti, G. Fiorentini, G. G. Raffelt +2
A variation of Newton's constant over cosmological time scales would modify the main-squence time of globular cluster (GC) stars. We have calculated the evolution of low-mass s…
Star formation relations and CO SLEDs across the J-ladder and redshift
T. R. Greve, I. Leonidaki, E. M. Xilouris +19
We present FIR-CO luminosity relations () for the full CO rotational ladder from J=1-0 to J=13-12 for 62 local (z < 0.1) (Ultra) Luminou…
Multiple CO lines in SMM J16359+6612 -- Further evidence for a merger
A. Weiss, D. Downes, F. Walter +1
Using the IRAM 30m telescope, we report the detection of the CO(3--2), CO(4--3), CO(5--4) and CO(6--5) lines in the gravitational lensed submm galaxy SMM J16359+6612 at z=2.5. The…
Un updated theoretical scenario for globular cluster stars
S. Cassisi, V. Castellani, S. Degl'Innocenti +1
In the first part of this paper we revisit the history of theoretical predictions for HB luminosities in old Population II stellar clusters, starting from the results of `old' evol…
GREAT confirms transient nature of the circumnuclear disk
M. A. Requena-Torres, R. Guesten, A. Weiss +6
We report SOFIA/GREAT, Herschel/HIFI, and ground-based velocity-resolved spectroscopy of carbon monoxide (CO) rotational transitions from J=2-1 to J=16-15 toward two positions in t…
Weak 13CO in the Cloverleaf Quasar: evidence for a young, early generation starburst
C. Henkel, D. Downes, A. Weiss +2
Observations of 12CO at high redshift indicate rapid metal enrichment in the nuclear regions of at least some galaxies in the early universe. However, the enrichment may be limited…
Flares and variability from Sagittarius A*: five nights of simultaneous multi-wavelength observations
X. Haubois, K. Dodds-Eden, A. Weiss +8
Aims. We report on simultaneous observations and modeling of mid-infrared (MIR), near-infrared (NIR), and submillimeter (submm) emission of the source Sgr A* associated with the su…
Submillimeter observations of the J2142-4423 Lya protocluster at z = 2.38
A. Beelen, A. Omont, N. Bavouzet +9
We present observations aimed at exploring both the nature of Lya emitting nebulae (Lya blobs) at z=2.38 and the way they trace large scale structure (LSS), by exploring their prox…
The Bright Extragalactic ALMA Redshift Survey (BEARS) I: redshifts of bright gravitationally-lensed galaxies from the Herschel ATLAS
S. A. Urquhart, G. J. Bendo, S. Serjeant +53
We present spectroscopic measurements for 71 galaxies associated with 62 of the brightest high-redshift submillimeter sources from the Southern fields of the Herschel Astrophysical…
Probing star formation in the dense environments of z~1 lensing halos aligned with dusty star-forming galaxies detected with the South Pole Telescope
N. Welikala, M. Béthermin, D. Guery +46
We probe star formation in the environments of massive dark matter halos at redshifts of . This star formation is linked to a sub-millimetre cl…
The halo+cluster system of the Galactic globular cluster NGC1851
A. F. Marino, A. P. Milone, D. Yong +17
NGC1851 is surrounded by a stellar component that extends more than ten times beyond the tidal radius. Although the nature of this stellar structure is not known, it has been sugge…
ATLASGAL - The APEX Telescope Large Area Survey of the Galaxy at 870 microns
F. Schuller, K. M. Menten, Y. Contreras +31
(Abridged) Studying continuum emission from interstellar dust is essential to locating and characterizing the highest density regions in the interstellar medium. In particular, the…
The level of agreement between theoretical and observed globular cluster luminosity functions
S. Degl'Innocenti, A. Weiss, L. Leone
Luminosity functions from theoretical stellar evolution calculations are compared with observed ones of several galactic globular clusters (M30, M92, M68, NGC6397, M4, M80, NGC6352…
A self-synthesized origin of heavy metals in hot subdwarf stars?
T. Battich, M. M. Miller Bertolami, A. M. Serenelli +2
Some He-rich hot subdwarf stars (He-sdOBs) present high abundances of trans-iron elements, such as Sr, Y, Zr and Pb. Diffusion processes are important in hot subdwarf stars, and it…
The -processes nucleosynthesis during the formation of He-rich hot-subdwarf stars
T. Battich, M. M. Miller Bertolami, A. Weiss +3
It has been shown that proton ingestion episodes can happen in the formation of hot-subdwarf stars, and that neutron-capture processes are possible in those cases. Moreover, some h…
Sulfur isotope ratios in the Large Magellanic Cloud
Y. Gong, C. Henkel, K. M. Menten +11
Sulfur isotope ratios have emerged as a promising tool for tracing stellar nucleosynthesis, quantifying stellar populations, and investigating the chemical evolution of galaxies. W…
Microscopic Diffusion in Stellar Evolution Codes: First Comparison results of ESTA-Task~3
Y. Lebreton, J. Montalban, J. Christensen-Dalsgaard +8
We present recent work undertaken by the Evolution and Seismic Tools Activity (ESTA) team of the CoRoT Seismology Working Group. The new ESTA-Task 3 aims at testing, comparing and…
Molecular gas in QSO host galaxies at z>5
R. Maiolino, R. Neri, A. Beelen +10
We present observations with the IRAM Plateau de Bure Interferometer of three QSOs at z>5 aimed at detecting molecular gas in their host galaxies as traced by CO transitions. CO (5…
Kiloparsec-scale dust disks in high-redshift luminous submillimeter galaxies
J. A. Hodge, A. M. Swinbank, J. M. Simpson +21
We present high-resolution (0.16) 870um Atacama Large Millimeter/submillimeter Array (ALMA) imaging of 16 luminous (L_IR ~ 4 x 10^12 L_sun) submillimeter galaxies (SMGs) from th…
Large gas reservoirs and free-free emission in two lensed star-forming galaxies at z=2.7
M. Aravena, E. J. Murphy, J. E. Aguirre +26
We report the detection of CO(1-0) line emission in the bright, lensed star-forming galaxies SPT-S 233227-5358.5 (z=2.73) and SPT-S 053816-5030.8 (z=2.78), using the Australia Tele…
Evolved stars hint to an external origin of enhanced metallicity in planet-hosting stars
L. Pasquini, M. P. Doellinger, A. Weiss +5
Exo-planets are preferentially found around high metallicity main sequence stars. We aim at investigating whether evolved stars share this property, and what this tells about plane…
What Powers Lyman alpha Blobs?
Y. Ao, Y. Matsuda, A. Beelen +14
Lyman alpha blobs (LABs) are spatially extended lyman alpha nebulae seen at high redshift. The origin of Lyman alpha emission in the LABs is still unclear and under debate. To stud…
Multi-frequency imaging of the galaxy cluster Abell 2163 using the Sunyaev-Zel'dovich Effect
M. Nord, K. Basu, F. Pacaud +30
We used the APEX-SZ and LABOCA bolometer cameras on the APEX telescope to map the decrement of the Sunyaev-Zeldovich effect at 150 GHz and the increment at 345 GHz toward the galax…
Dense-gas tracers and carbon isotopes in five 2.5<z<4 lensed dusty star forming galaxies from the SPT SMG sample
M. Bethermin, T. R. Greve, C. De Breuck +15
The origin of the high SFR observed in high-z dusty star-forming galaxies is still unknown. Large fractions of dense molecular gas might provide part of the explanation, but there…
Dense Gas in Nearby Galaxies: XVII. The Distribution of Ammonia in NGC253, Maffei2 and IC342
M. Lebron, J. G. Mangum, R. Mauersberger +5
The central few 100 pc of galaxies often contain large amounts of molecular gas. The chemical and physical properties of these extragalactic star formation regions differ from thos…
The Aarhus Red Giants Challenge I: Stellar structures in the red giant branch phase
V. Silva Aguirre, J. Christensen-Dalsgaard, S. Cassisi +23
(Abridged). We introduce the Aarhus Red Giants Challenge, a series of detailed comparisons between widely used stellar evolution and oscillation codes aiming at establishing the mi…
On a new parameter to estimate the helium content in old stellar systems
F. Troisi, G. Bono, P. B. Stetson +19
We introduce a new parameter Îξ - the difference in magnitude between the red giant branch (RGB) bump and a point on the main sequence (MS) at the same color as the bump, the "be…
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…
Stellar evolution models with overshooting based on 3-equation non-local theories I. Physical basis and the computation of the dissipation rate
F. Kupka, F. Ahlborn, A. Weiss
Context. Mixing by convective overshooting has long been suggested to play an important role for the amount of hydrogen available to nuclear burning in convective cores of stars. T…
VLA imaging of 12CO J=1-0 and free-free emission in lensed submillimetre galaxies
A. P. Thomson, R. J. Ivison, Ian Smail +7
We present a study using the Karl G. Jansky Very Large Array of 12CO J=1-0 emission in three strongly lensed submillimetre-selected galaxies (SMMJ16359, SMMJ14009 and SMMJ02399) at…
On the Variations of Fundamental Constants and AGN feedback in the QSO host galaxy RXJ0911.4+0551 at z=2.79
A. Weiss, F. Walter, D. Downes +4
We report on sensitive observations of the CO(7-6) and CI(2-1) transitions in the z=2.79 QSO host galaxy RXJ0911.4+0551 using the IRAM Plateau de Bure interferometer (PdBI). Our ex…
Gas and dust in a submillimeter galaxy at z = 4.24 from the Herschel ATLAS
Pierre Cox, M. Krips, R. Neri +39
We report ground-based follow-up observations of the exceptional source, ID141, one the brightest sources detected so far in the H-ATLAS cosmological survey. ID141 was observed usi…
An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field: High-resolution dust continuum morphologies and the link between sub-millimetre galaxies and spheroid formation
B. Gullberg, I. Smail, A. M. Swinbank +15
We present an analysis of the morphology and profiles of the dust continuum emission in 153 bright sub-millimetre galaxies (SMGs) detected with ALMA at S/N ratios of in high-r…
Convective core size determination using asteroseismic data
V. Silva Aguirre, J. Ballot, A. Serenelli +1
As it is long known, the presence of a convective region creates a discontinuity in the chemical profile of a star, which in turn translates into a sharp variation of the adiabatic…
LABOCA observations of nearby, active galaxies
A. Weiss, A. Kovacs, R. Guesten +4
We present large scale 870 micron maps of the nearby starburst galaxies NGC253, NGC4945 and the nearest giant elliptical radio galaxy Centaurus A (NGC 5128) obtained with the newly…
Red giant bound on the axion-electron coupling reexamined
G. Raffelt, A. Weiss
If axions or other low-mass pseudoscalars couple to electrons (``fine structure constant'' ) they are emitted from red giant stars by the Compton process and by…
Basic physical parameters of a selected sample of evolved stars
L. da Silva, L. Girardi, L. Pasquini +6
We present the detailed spectroscopic analysis of 72 evolved stars, including the [Fe/H] determination for the whole sample. These metallicities, together with the Teff values and…