Search Publications
GAMA/G10-COSMOS/3D-HST: Evolution of the galaxy stellar mass function over 12.5 Gyr
Robotham, A. S. G.; Driver, S. P.; Wright, A. H.
Using a combined and consistently analysed GAMA, G10-COSMOS, and 3D-HST data set, we explore the evolution of the galaxy stellar mass function over lookback times t_L \in [0.2,12.5] { h^{-1}_{70} Gyr}. We use a series of volume-limited samples to fit Schechter functions in bins of ∼constant lookback time and explore the evolution of the best-fitti…
Spectral energy distributions and colours of hot subluminous stars
Irrgang, Andreas; Heber, Ulrich; Schaffenroth, Johannes
Photometric surveys at optical, ultraviolet, and infrared wavelengths provide ever-growing datasets as major surveys proceed. Colour-colour diagrams are useful tools to identify classes of star and provide large samples. However, combining all photometric measurements of a star into a spectral energy distribution will allow quantitative analyses t…
Heading Gaia to measure atmospheric dynamics in AGB stars
Schultheis, M.; Chiavassa, A.; Freytag, B.
Context. Asymptotic giant branch (AGB) stars are characterised by complex stellar surface dynamics that affect the measurements and amplify the uncertainties on stellar parameters. The uncertainties in observed absolute magnitudes have been found to originate mainly from uncertainties in the parallaxes. The resulting motion of the stellar photocen…
Deconstructing the neutrino mass constraint from galaxy redshift surveys
Komatsu, Eiichiro; Boyle, Aoife
The total mass of neutrinos can be constrained in a number of ways using galaxy redshift surveys. Massive neutrinos modify the expansion rate of the Universe, which can be measured using baryon acoustic oscillations (BAOs) or the Alcock-Paczynski (AP) test. Massive neutrinos also change the structure growth rate and the amplitude of the matter pow…
Star formation history from the cosmic infrared background anisotropies
Lagache, G.; Béthermin, M.; Maniyar, A. S.
We present a linear clustering model of cosmic infrared background (CIB) anisotropies at large scales that is used to measure the cosmic star formation rate density up to redshift 6, the effective bias of the CIB, and the mass of dark matter halos hosting dusty star-forming galaxies. This is achieved using the Planck CIB auto- and cross-power spec…
Geoeffectiveness of interplanetary shocks controlled by impact angles: A review
Samsonov, A. A.; Oliveira, D. M.
The high variability of the Sun's magnetic field is responsible for the generation of perturbations that propagate throughout the heliosphere. Such disturbances often drive interplanetary shocks in front of their leading regions. Strong shocks transfer momentum and energy into the solar wind ahead of them which in turn enhance the solar wind inter…
Jupiter's Aurora Observed With HST During Juno Orbits 3 to 7
Kurth, W. S.; Saur, J.; McComas, D. J. +20 more
A large set of observations of Jupiter's ultraviolet aurora was collected with the Hubble Space Telescope concurrently with the NASA-Juno mission, during an eight-month period, from 30 November 2016 to 18 July 2017. These Hubble observations cover Juno orbits 3 to 7 during which Juno in situ and remote sensing instruments, as well as other observa…
Deciphering the atmosphere of HAT-P-12b: solving discrepant results
Strassmeier, K. G.; Granzer, T.; Mallonn, M. +9 more
Context. Two independent investigations of the atmosphere of the hot Jupiter HAT-P-12b by two different groups resulted in discrepant solutions. Using broad-band photometry from the ground, one study found a flat and featureless transmission spectrum that was interpreted as gray absorption by dense cloud coverage. The second study made use of Hubb…
ALMA 26 Arcmin2 Survey of GOODS-S at One Millimeter (ASAGAO): Average Morphology of High-z Dusty Star-forming Galaxies in an Exponential Disk (n ≃ 1)
Ouchi, Masami; Ivison, R. J.; Dunlop, J. S. +23 more
We present morphological properties of dusty star-forming galaxies at z = 1-3 determined with the high-resolution (FWHM ∼ 0.″19) Atacama Large Milllimeter/submillimeter Array (ALMA) 1 mm map of our ASAGAO survey covering a 26 arcmin2 area in GOODS-S. In conjunction with the ALMA archival data, our sample consists of 45 ALMA sources with…
Characterizing TW Hydra
Lee, Jae-Joon; Kim, Hwihyun; Jaffe, Daniel T. +5 more
At 60 pc, TW Hydra (TW Hya) is the closest example of a star with a gas-rich protoplanetary disk, though TW Hya may be relatively old (3-15 Myr). As such, TW Hya is especially appealing for testing our understanding of the interplay between stellar and disk evolution. We present a high-resolution near-infrared spectrum of TW Hya obtained with the …