Search Publications
Missions
Journals
Publication Years
Imaging Prominence Eruptions out to 1 AU
Howard, Russell A.; Linton, Mark G.; Wood, Brian E.
Views of two bright prominence eruptions trackable all the way to 1 AU are here presented, using the heliospheric imagers on the Solar TErrestrial RElations Observatory (STEREO) spacecraft. The two events first erupted from the Sun on 2011 June 7 and 2012 August 31, respectively. Only these two examples of clear prominence eruptions observable thi…
Luminosity Dependence and Redshift Evolution of Strong Emission-Line Diagnostics in Star-Forming Galaxies
Barger, A. J.; Cowie, L. L.; Songaila, A.
We examine the redshift evolution of standard strong emission-line diagnostics for Hβ-selected star-forming galaxies using the local SDSS sample and a new z=0.2{--}2.3 sample obtained from Hubble Space Telescope WFC3 grism and Keck DEIMOS and MOSFIRE data. We use the SDSS galaxies to show that there is a systematic dependence of the strong emissio…
Constraints on Photoionization Feedback from Number Counts of Ultra-faint High-redshift Galaxies in the Frontier Fields
Castellano, M.; Santini, P.; Merlin, E. +11 more
We exploit a sample of ultra-faint high-redshift galaxies (demagnified Hubble Space Telescope, HST, H 160 magnitude > 30) in the Frontier Fields clusters A2744 and M0416 to constrain a theoretical model for the UV luminosity function in the presence of photoionization feedback. The objects have been selected on the basis of accurate …
Quasi-periodic injections of relativistic electrons in Saturn's outer magnetosphere
Krupp, N.; Dougherty, M. K.; Roussos, E. +8 more
Quasi-periodic, short-period injections of relativistic electrons have been observed in both Jupiter's and Saturn's magnetospheres, but understanding their origin or significance has been challenging, primarily due to the limited number of in-situ observations of such events by past flyby missions. Here we present the first survey of such injectio…
MUSE observations of the lensing cluster Abell 1689
Bina, D.; Pelló, R.; Richard, J. +14 more
Context. This paper presents the results obtained with the Multi Unit Spectroscopic Explorer (MUSE) for the core of the lensing cluster Abell 1689, as part of MUSE's commissioning at the ESO Very Large Telescope.
Aims: Integral-field observations with MUSE provide a unique view of the central 1 × 1 arcmin2 region at intermediate sp…
Martian ionosphere observed by Mars Express. 1. Influence of the crustal magnetic fields
Dubinin, E.; Fraenz, M.; Andrews, D. +1 more
The Bullet cluster at its best: weighing stars, gas, and dark matter
Kneib, J. -P.; Jullo, E.; Richard, J. +4 more
Aims: We present a new strong lensing mass reconstruction of the Bullet cluster (1E 0657-56) at z = 0.296, based on WFC3 and ACS HST imaging and VLT/FORS2 spectroscopy. The strong lensing constraints underwent substantial revision compared to previously published analysis, there are now 14 (six new and eight previously known) multiply-imaged …
A lucky imaging multiplicity study of exoplanet host stars - II
Avenhaus, H.; Ginski, C.; Mugrauer, M. +6 more
The vast majority of extrasolar planets are detected by indirect detection methods such as transit monitoring and radial velocity measurements. While these methods are very successful in detecting short-periodic planets, they are mostly blind to wide sub-stellar or even stellar companions on long orbits. In our study, we present high-resolution im…
Chemical abundances in the multiple sub-giant branch of 47 Tucanae: insights on its faint sub-giant branch component
Milone, A. P.; Marino, A. F.; Bedin, L. R. +8 more
The globular cluster 47 Tuc exhibits a complex sub-giant branch (SGB) with a faint-SGB comprising only about the 10 per cent of the cluster mass and a bright-SGB hosting at least two distinct populations. We present a spectroscopic analysis of 62 SGB stars including 21 faint-SGB stars. We thus provide the first chemical analysis of the intriguing …
The 80 Ms follow-up of the X-ray afterglow of GRB 130427A challenges the standard forward shock model
Troja, E.; Piro, L.; Page, M. J. +12 more
GRB 130427A was the brightest gamma-ray burst detected in the last 30 yr. With an equivalent isotropic energy output of 8.5 × 1053 erg and redshift z = 0.34, it uniquely combined very high energetics with a relative proximity to Earth. As a consequence, its X-ray afterglow has been detected by sensitive X-ray observatories such as XMM-N…