Search Publications
Probing the cool interstellar and circumgalactic gas of three massive lensing galaxies at z = 0.4-0.7
Zahedy, Fakhri S.; Chen, Hsiao-Wen; Rauch, Michael +2 more
We present multisightline absorption spectroscopy of cool gas around three lensing galaxies at z = 0.4-0.7. These lenses have half-light radii re = 2.6-8 kpc and stellar masses of log M*/M⊙ = 10.9-11.4, and therefore resemble nearby passive elliptical galaxies. The lensed QSO sightlines presented here occur at proj…
Acceleration of individual, decimetre-sized aggregates in the lower coma of comet 67P/Churyumov-Gerasimenko
Jorda, L.; Lamy, P. L.; Lara, L. M. +41 more
We present observations of decimetre-sized, likely ice-containing aggregates ejected from a confined region on the surface of comet 67P/Churyumov-Gerasimenko. The images were obtained with the narrow angle camera of the Optical, Spectroscopic, and Infrared Remote Imaging System on board the Rosetta spacecraft in 2016 January when the comet was at …
The SCUBA-2 Cosmology Legacy Survey: galaxies in the deep 850 µm survey, and the star-forming `main sequence'
Bowler, R. A. A.; McLure, R. J.; Dunlop, J. S. +14 more
We investigate the properties of the galaxies selected from the deepest 850-µm survey undertaken to date with (Submillimetre Common-User Bolometer Array 2) SCUBA-2 on the James Clerk Maxwell Telescope as part of the SCUBA-2 Cosmology Legacy Survey. A total of 106 sources (>5σ) were uncovered at 850 µm from an area of ≃150 arcmin
A robust measurement of the mass outflow rate of the galactic outflow from NGC 6090
Chisholm, John; Leitherer, Claus; Tremonti Christy, A. +1 more
To evaluate the impact of stellar feedback, it is critical to estimate the mass outflow rates of galaxies. Past estimates have been plagued by uncertain assumptions about the outflow geometry, metallicity, and ionization fraction. Here we use Hubble Space Telescope ultraviolet spectroscopic observations of the nearby starburst NGC 6090 to demonstr…
Cosmochemical implications of CONSERT permittivity characterization of 67P/CG
Lasue, J.; Quirico, E.; Kofman, W. +7 more
Analysis of the propagation of the Comet Nucleus Sounding Experiment by Radiowave Transmission (CONSERT) signal throughout the small lobe of the 67P/CG nucleus has permitted us to deduce the real part of the permittivity, at a value of 1.27 ± 0.05. The first interpretation of this value, using the dielectric properties of mixtures of ices (H2…
A PSF-based approach to Kepler/K2 data - I. Variability within the K2 Campaign 0 star clusters M 35 and NGC 2158
Bedin, L. R.; Piotto, G.; Nardiello, D. +1 more
Kepler and K2 data analysis reported in the literature is mostly based on aperture photometry. Because of Kepler's large, undersampled pixels and the presence of nearby sources, aperture photometry is not always the ideal way to obtain high-precision photometry, and, because of this, the data set has not been fully exploited so far. We present a n…
A Herschel-SPIRE survey of the Mon R2 giant molecular cloud: analysis of the gas column density probability density function
Henning, T.; Gutermuth, R.; Wolk, S. J. +8 more
We present a far-IR survey of the entire Mon R2 giant molecular cloud (GMC) with Herschel-Spectral and Photometric Imaging REceiver cross-calibrated with Planck-High Frequency Instrument data. We fit the spectral energy distributions of each pixel with a greybody function and an optimal beta value of 1.8. We find that mid-range column densities ob…
A young cluster with an extended main-sequence turnoff: confirmation of a prediction of the stellar rotation scenario
Salaris, M.; Larsen, S.; Cabrera-Ziri, I. +13 more
We present Hubble Space Telescope photometry of NGC 1850, a ∼100 Myr, ∼105 M⊙ cluster in the Large Magellanic Cloud. The colour-magnitude diagram clearly shows the presence of an extended main-sequence turnoff (eMSTO). The use of non-rotating stellar isochrones leads to an age spread of ∼40 Myr. This is in good agreement with…
Matching dust emission structures and magnetic field in high-latitude cloud L1642: comparing Herschel and Planck maps
Juvela, M.; Montier, L.; Ristorcelli, I. +7 more
The nearby cloud L1642 is one of only two known very high latitude (|b| > 30 deg) clouds actively forming stars. It is a rare example of star formation in isolated conditions, and can reveal important details of star formation in general, e.g. of the effect of magnetic fields. We compare Herschel dust emission structures and magnetic field orie…
SU Lyncis, a hard X-ray bright M giant: clues point to a large hidden population of symbiotic stars
Nuñez, N. E.; Nelson, T.; Mukai, K. +6 more
Symbiotic star surveys have traditionally relied almost exclusively on low resolution optical spectroscopy. However, we can obtain a more reliable estimate of their total Galactic population by using all available signatures of the symbiotic phenomenon. Here we report the discovery of a hard X-ray source, 4PBC J0642.9+5528, in the Swift hard X-ray…