Search Publications
Multiwavelength study of the G345.5+1.5 region
Zavagno, A.; Hervías-Caimapo, C.; Bronfman, L. +4 more
Context. The star formation process requires the dust and gas present in the Milky Way to self-assemble into dense reservoirs of neutral material where the new generation of stars will emerge. Star-forming regions are usually studied in the context of Galactic surveys, but dedicated observations are sometimes needed when the study reaches beyond t…
Spectral characterization of newly detected young substellar binaries with SINFONI
Calissendorff, Per; Janson, Markus; Köhler, Rainer +1 more
We observe 14 young low-mass substellar objects using the VLT/SINFONI integral field spectrograph with laser guide star adaptive optics to detect and characterize three candidate binary systems. All three binary candidates show strong signs of youth, with two of them likely belonging to young moving groups. Together with the adopted young-moving-g…
Revisiting the magnetization of comet 67P/Churyumov-Gerasimenko
Richter, I.; Glassmeier, K. H.; Heinisch, P. +1 more
Context. The landing of the Philae probe as part of the ESA Rosetta mission made it possible to study the magnetization of comet 67P/Churyumov-Gerasimenko (67P) by combining observations from the lander and orbiter. In this work, we revisit the magnetic properties with information gained during the progression of the mission for a comprehensive un…
Multiwavelength campaign on Mrk 509. XVI. Continued HST/COS monitoring of the far-ultraviolet spectrum
Kaastra, J. S.; Kriss, G. A.; Arav, N. +10 more
Aims: To elucidate the location, physical conditions, mass outflow rate, and kinetic luminosity of the outflow from the active nucleus of the Seyfert 1 galaxy Mrk 509, we used coordinated UV and X-ray spectral observations in 2012 to follow up our lengthier campaign conducted in 2009.
Methods: We observed Mrk 509 with the Cosmic Origins …
Herschel water maps towards the vicinity of the black hole Sgr A*
Martín-Pintado, J.; Harris, A. I.; van der Werf, P. +8 more
Aims: We study the spatial distribution and kinematics of water emission in a 8 × 8 pc2 region of the Galactic center (GC) that covers the main molecular features around the supermassive black hole Sagittarius A* (Sgr A*). We also analyze the water excitation to derive the physical conditions and water abundan…
Warm CO in evolved stars from the THROES catalogue. II. Herschel/PACS spectroscopy of C-rich envelopes
García-Lario, P.; Sánchez Contreras, C.; da Silva Santos, J. M. +1 more
Context. This is the second paper of a series making use of Herschel/PACS spectroscopy of evolved stars in the THROES catalogue to study the inner warm regions of their circumstellar envelopes (CSEs).
Aims: We analyse the CO emission spectra, including a large number of high-J CO lines (from J = 14-13 to J = 45-44, ν = 0), as a proxy for the …
Concerning the occurrence of bow shocks around high-mass X-ray binaries
Prišegen, M.
Context. We investigate the occurrence of stellar bow shocks around high-mass X-ray binaries (HMXBs) in the Galaxy.
Aims: We seek to conduct a survey of HMXBs in the mid-infrared to search for the presence of bow shocks around these objects.
Methods: Telescopes operating in the mid-infrared, such as the Spitzer Space Telescope or Wide-fi…
Infrared and sub-mm observations of outbursting young stars with Herschel and Spitzer
Rab, C.; Audard, M.; Güdel, M. +3 more
Context. Episodic accretion plays an important role in the evolution of young stars. Although it has been under investigation for a long time, the origin of such episodic accretion events is not yet understood.
Aims: We investigate the dust and gas emission of a sample of young outbursting sources in the infrared to get a better understanding…
Unveiling the enigma of ATLAS17aeu
Covino, S.; D'Avanzo, P.; Campana, S. +42 more
Aims: The unusual transient ATLAS17aeu was serendipitously detected within the sky localisation of the gravitational wave trigger GW 170104. The importance of a possible association with gravitational waves coming from a binary black hole merger led to an extensive follow-up campaign, with the aim of assessing a possible connection with GW 17…
Searching for further evidence for cloud-cloud collisions in L1188
Menten, K. M.; Lee, M. -Y.; Wang, Y. +9 more
In order to search for further observational evidence of cloud-cloud collisions in one of the promising candidates, L1188, we carried out observations of multiple molecular lines toward the intersection region of the two nearly orthogonal filamentary molecular clouds in L1188. Based on these observations, we find two parallel filamentary structure…