Search Publications
V342 Andromedae B is an eccentric-orbit eclipsing binary
Schwarzenberg-Czerny, A.; Bagińska, P.; Lehmann, H. +12 more
We present a photometric and spectroscopic study of the visual binary V342 Andromedae. Visual components of the system have angular separations of 3 arcseconds. We obtained two spectroscopic data sets. An examination of both the A and B component spectra reveals that the B component is a spectroscopic binary with an eccentric orbit. The orbital pe…
High resolution deep imaging of a bright radio quiet QSO at z ~ 3
Tanaka, Ichi; Yamada, Toru; Iye, Masanori +3 more
We have obtained deep J and Ks-band images centered on a bright radio quiet QSO UM 402 (zem = 2.856) using the IRCS camera and adaptive optics systems that are part of the Subaru Telescope, as well as retrieved WFC3/F140W archive images of this object. A faint galaxy (mk = 23.32±0.05 in the Vega magnitude system) that lies ~ …
Unified line profiles for hydrogen perturbed by collisions with protons: satellites and asymmetries
Kepler, S. O.; Pelisoli, Ingrid; Santos, M. G.
We present new calculations of unified line profiles for hydrogen perturbed by collisions with protons. We report on new calculations of the potential energies and dipole moments which allow the evaluation of profiles for the lines of the Lyman series up to Lyman δ and the Balmer series up to Balmer 10. Unified calculations only existed for the li…
Witnessing the transformation of a quasar host galaxy at z = 1.6
Humphrey, A.; Villar-Martín, M.; Binette, L. +9 more
A significant minority of high-redshift radio galaxy (HzRG) candidates show extremely red broad-band colours and remain undetected in emission lines after optical `discovery' spectroscopy. In this paper, we present deep GTC optical imaging and spectroscopy of one such radio galaxy, 5C 7.245, with the aim of better understanding the nature of these…
On the Integrated Continuum Radio Spectrum of Supernova Remnant W44 (G34.7-0.4): New Insights From Planck
Onić, D.
In this paper, the integrated continuum radio spectrum of supernova remnant (SNR) W44 was analyzed up to 70 GHz by testing different emission models that can be responsible for its particular shape. The observations by the Planck space telescope made it possible to analyze the high frequency part of radio emission from SNRs. Although the quality o…
Variegation and space weathering on asteroid 21 Lutetia
Keller, H. U.; Mottola, S.; Preusker, F. +4 more
During the flyby in 2010, the OSIRIS camera on-board Rosetta acquired hundreds of high-resolution images of asteroid Lutetia's surface through a range of narrow-band filters. While Lutetia appears very bland in the visible wavelength range, Magrin et al. (2012) tentatively identified UV color variations in the Baetica cluster, a group of relativel…
Search for signatures of dust in the Pluto-Charon system using Herschel/PACS observations
Lellouch, E.; Balog, Z.; Marton, G. +3 more
In this letter we explore the environment of Pluto and Charon in the far infrared with the main aim of identifying the signs of any possible dust ring, should it exist in the system. Our study is based on observations performed at 70 µm with the PACS instrument onboard the Herschel Space Observatory at nine epochs between March 14 and 19, 20…
Thermal structure of Venus' nightside mesosphere as observed by infrared heterodyne spectroscopy at 10 µm
Sonnabend, Guido; Sornig, Manuela; Stangier, Tobias +4 more
Ground-based heterodyne spectroscopy is used to observe the night side of Venus by probing single pressure broadened CO2 absorption lines. From the pressure induced line broadening, the predominant temperature at different altitude layers can be deduced. It is found, that heterodyne spectroscopy is sensitive to probe the mesosphere betw…
Herschel Far-IR Observations of the Giant H II Region NGC 3603
Paresce, Francesco; Correnti, Matteo; Di Cecco, Alessandra +2 more
We observed the giant H II region around the NGC 3603 YC with the five broad bands (70, 160, 250, 350, 500 µm) of the SPIRE and PACS instruments, on board the Herschel Space Observatory. Together with what is currently known of the stellar, atomic, molecular, and warm dust components, this additional and crucial information should allow us t…
Ultraviolet/X-ray Variability and the Extended X-ray Emission of the Radio-loud Broad Absorption Line Quasar PG 1004+130
Brandt, W. N.; Luo, B.; Gallagher, S. C. +2 more
We present the results of recent Chandra, XMM-Newton, and Hubble Space Telescope observations of the radio-loud (RL), broad absorption line (BAL) quasar PG 1004+130. We compare our new observations to archival X-ray and UV data, creating the most comprehensive, high signal-to-noise, multi-epoch, spectral monitoring campaign of a RL BAL quasar to d…