Search Publications
The properties of (sub-)millimetre-selected galaxies as revealed by CANDELS HST WFC3/IR imaging in GOODS-South
Kartaltepe, J. S.; Ferguson, H. C.; McLure, R. J. +16 more
We have exploited the Hubble Space Telescope (HST) Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey (CANDELS) J and H-band Wide Field Camera 3 (WFC3)/infrared (IR) imaging to study the properties of (sub-)millimetre galaxies within the Great Observatories Origins Deep Survey South (GOODS-South) field. After using the deep radio (Very Large…
Multi-wavelength SEDs of Herschel-selected Galaxies in the COSMOS Field
Berta, S.; Riguccini, L.; Casey, Caitlin M. +15 more
We combine Herschel Photodetector Array Camera and Spectrometer and Spectral and Photometric Imaging Receiver maps of the full 2 deg2 Cosmic Evolution Survey (COSMOS) field with existing multi-wavelength data to obtain template and model-independent optical-to-far-infrared spectral energy distributions (SEDs) for 4218 Herschel-selected …
Waterfalls around protostars. Infall motions towards Class 0/I envelopes as probed by water
van Dishoeck, E. F.; Bruderer, S.; Kristensen, L. E. +4 more
Context. For stars to form, material must fall inwards from core scales through the envelope towards the central protostar. While theories of how this takes place have been around for some time, the velocity profile around protostars is poorly constrained. The combination of observations in multiple transitions of a tracer which is sensitive to ki…
The CORALIE survey for southern extrasolar planets. XVII. New and updated long period and massive planets
Alonso, R.; Queloz, D.; Sahlmann, J. +24 more
Context. Since 1998, a planet-search program around main sequence stars within 50 pc in the southern hemisphere has been carried out with the CORALIE echelle spectrograph at La Silla Observatory.
Aims: With an observing time span of more than 14 years, the CORALIE survey is now able to unveil Jovian planets on Jupiter's period domain. This gr…
A rigid and weathered ice shell on Titan
Iess, L.; Zebker, H.; Nimmo, F. +1 more
Several lines of evidence suggest that Saturn's largest moon, Titan, has a global subsurface ocean beneath an outer ice shell 50 to 200 kilometres thick. If convection is occurring, the rigid portion of the shell is expected to be thin; similarly, a weak, isostatically compensated shell has been proposed to explain the observed topography. Here we…
On the Robustness of z = 0-1 Galaxy Size Measurements through Model and Non-parametric Fits
Franx, Marijn; Williams, Rik J.; Mosleh, Moein
We present the size-stellar mass relations of nearby (z = 0.01-0.02) Sloan Digital Sky Survey galaxies, for samples selected by color, morphology, Sérsic index n, and specific star formation rate. Several commonly employed size measurement techniques are used, including single Sérsic fits, two-component Sérsic models, and a non-parametric method. …
Returning magnetic flux in sunspot penumbrae
Ruiz Cobo, B.; Asensio Ramos, A.
Aims: We study the presence of reversed polarity magnetic flux in sunspot penumbra.
Methods: We applied a new regularized method to deconvolve spectropolarimetric data observed with the spectropolarimeter SP onboard Hinode. The new regularization is based on a principal component decomposition of the Stokes profiles. The resulting Stokes…
The galaxy stellar mass function and its evolution with time show no dependence on global environment
Moretti, A.; Vulcani, B.; Halliday, C. +7 more
We present an analysis of the galaxy stellar mass function in different environments at intermediate redshift (0.3 ≤ z ≤ 0.8) for two mass-limited galaxy samples. We use the IMACS Cluster Building Survey (ICBS; M∗ ≥ 1010.5 M⊙) to study cluster, group and field galaxies at z = 0.3-0.45, and the ESO Distant Cluster S…
High-J CO survey of low-mass protostars observed with Herschel-HIFI
van Dishoeck, E. F.; Karska, A.; Fuente, A. +8 more
Context. In the deeply embedded stage of star formation, protostars start to heat and disperse their surrounding cloud cores. The evolution of these sources has traditionally been traced through dust continuum spectral energy distributions (SEDs), but the use of CO excitation as an evolutionary probe has not yet been explored due to the lack of hi…
New image statistics for detecting disturbed galaxy morphologies at high redshift
Koekemoer, A. M.; Lotz, J. M.; Conselice, C. J. +5 more
Testing theories of hierarchical structure formation requires estimating the distribution of galaxy morphologies and its change with redshift. One aspect of this investigation involves identifying galaxies with disturbed morphologies (e.g. merging galaxies). This is often done by summarizing galaxy images using, e.g. the concentration, asymmetry a…