Search Publications
Longitudinal filament oscillations enhanced by two C-class flares
Guo, J. H.; Zhang, Q. M.; Xu, A. A. +1 more
Context. Large-amplitude, longitudinal filament oscillations triggered by solar flares have been well established in the literature. However, filament oscillations enhanced by flares have never been reported.
Aims: In this paper we report the multiwavelength observations of a very long filament in active region (AR) 11112 on 2010 October 18. …
Discovery of molecular gas fueling galaxy growth in a protocluster at z = 1.7
Prandoni, I.; Massardi, M.; Vignali, C. +16 more
Based on ALMA Band 3 observations of the CO(2→1) line transition, we report the discovery of three new gas-rich (MH2 ∼ 1.5 - 4.8 × 1010 M⊙) galaxies in an overdense region at z = 1.7 that already contains eight spectroscopically confirmed members. This leads to a total of 11 confirmed overdensity members…
Optical counterpart to Swift J0243.6+6124
Reig, P.; Alfonso-Garzón, J.; Fabregat, J.
Context. Swift J0243.6+6124 is a unique system. It is the first and only ultra-luminous X-ray source in our Galaxy. It is the first and only high-mass Be X-ray pulsar showing radio jet emission. It was discovered during a giant X-ray outburst in October 2017. While there are numerous studies in the X-ray band, very little is known about the optica…
GRB 190114C in the nuclear region of an interacting galaxy. A detailed host analysis using ALMA, the HST, and the VLT
Covino, S.; Sánchez-Ramírez, R.; Salvaterra, R. +28 more
Context. For the first time, very high energy emission up to the TeV range has been reported for a gamma-ray burst (GRB). It is still unclear whether the environmental properties of GRB 190114C might have contributed to the production of these very high energy photons, or if it is solely related to the released GRB emission.
Aims: The relativ…
GG Tauri A: gas properties and dynamics from the cavity to the outer disk
Beck, T.; Chapillon, E.; Hersant, F. +13 more
Context. GG Tauri A is the prototype of a young triple T Tauri star that is surrounded by a massive and extended Keplerian outer disk. The central cavity is not devoid of gas and dust and at least GG Tauri Aa exhibits its own disk of gas and dust emitting at millimeter wavelengths. Its observed properties make this source an ideal laboratory for i…
Euclid preparation. VIII. The Complete Calibration of the Colour-Redshift Relation survey: VLT/KMOS observations and data release
Cimatti, A.; Ilbert, O.; Burigana, C. +145 more
The Complete Calibration of the Colour-Redshift Relation survey (C3R2) is a spectroscopic effort involving ESO and Keck facilities designed specifically to empirically calibrate the galaxy colour-redshift relation - P(z|C) to the Euclid depth (iAB = 24.5) and is intimately linked to the success of upcoming Stage IV dark energy missions …
The Carnegie Supernova Project II. Observations of the intermediate-luminosity red transient SNhunt120
Suntzeff, N. B.; Galbany, L.; Baron, E. +23 more
We present multiwavelength observations of two gap transients that were followed by the Carnegie Supernova Project-II. The observations are supplemented with data obtained by a number of different programs. Here in the first of two papers, we focus on the intermediate-luminosity red transient (ILRT) designated SNhunt120, while in a companion paper…
Binary evolution along the red giant branch with BINSTAR: The barium star perspective
Jorissen, A.; Escorza, A.; Van Winckel, H. +1 more
Barium (Ba), CH, and extrinsic or Tc-poor S-type stars are evolved low- and intermediate-mass stars that show enhancement of slow-neutron-capture-process elements on their surface, an indication of mass accretion from a former asymptotic giant branch companion, which is now a white dwarf (WD). Ba and CH stars can be found in the main-sequence (MS)…
Directly comparing coronal and solar wind elemental fractionation
Owen, C. J.; Baker, D.; Brooks, D. H. +1 more
Context. As the solar wind propagates through the heliosphere, dynamical processes irreversibly erase the signatures of the near-Sun heating and acceleration processes. The elemental fractionation of the solar wind should not change during transit, however, making it an ideal tracer of these processes.
Aims: We aim to verify directly if the s…
The structure and characteristic scales of molecular clouds
Arzoumanian, Doris; Elia, Davide; Heyer, Mark +8 more
The structure of molecular clouds holds important clues regarding the physical processes that lead to their formation and subsequent dynamical evolution. While it is well established that turbulence imprints a self-similar structure onto the clouds, other processes, such as gravity and stellar feedback, can break their scale-free nature. The break…