Search Publications
Far plasma wake of Titan from the RPWS observations: A case study
Lewis, G. R.; Coates, A. J.; Kurth, W. S. +5 more
The Titan's plasma wake has been investigated using observations from the Radio and Plasma Wave Science (RPWS) instrument onboard the Cassini spacecraft during one Titan flyby on December 26, 2005. The Langmuir Probe and the wideband receiver suggest a strong asymmetry of the plasma wake, which is displaced from the ideal wake. Two distinct struct…
The martian atmosphere in the region of Hellas basin as observed by the planetary Fourier spectrometer (PFS-MEX)
Forget, F.; Grassi, D.; Ignatiev, N. I. +4 more
This work presents a review of the observations acquired by the planetary Fourier spectrometer (PFS) in the region of the Hellas basin. Taking advantage of the high spectral resolution of PFS, the vertical air temperature profile can be investigated with a previously unexperienced vertical resolution. Extensive comparisons with the expectations of…
XMM-Newton observations of the eclipsing polar V2301 Oph
Cropper, Mark; Ramsay, Gavin
We present XMM-Newton observations of the eclipsing polar V2301 Oph which cover nearly 2.5 binary orbital cycles and two eclipses. This polar is believed to have the lowest magnetic field strength (7 MG) of any known polar. We find evidence for structure in the X-ray eclipse profile which shows a `standstill' feature lasting 26 +/- 4 s. This allow…
AEGIS: A Panchromatic Study of IRAC-selected Extremely Red Objects with Confirmed Spectroscopic Redshifts
Barmby, P.; Papovich, C.; Rigopoulou, D. +17 more
We study 87 extremely red objects (EROs), selected both to have color redder than R-[3.6]=4.0 and to have confirmed spectroscopic redshifts. Together, these two constraints result in this sample populating a fairly narrow redshift range at 0.76<z<1.42. The key new ingredient included here is deep Spitzer Space Telescope Infrared Array Camera…
HST and VLT observations of the symbiotic star Hen 2-147. Its nebular dynamics, its Mira variable and its distance
Munari, U.; Corradi, R. L. M.; Santander-García, M. +5 more
Aims:We investigate the dynamics of the nebula around the symbiotic star Hen 2-147, determine its expansion parallax, and compare it with the distance obtained via the period-luminosity relation for its Mira variable.
Methods: A combination of multi-epoch HST images and VLT integral field high-resolution spectroscopy is used to study the nebul…
Influence of Saturnian moons on Saturn kilometric radiation
Gurnett, D. A.; Hospodarsky, G. B.; Kurth, W. S. +4 more
Similar to past studies at Jupiter, we conduct an investigation of possible associations of radio emission occurrence probability with the orbital phases of Saturnian moons. We use a new definition of the Saturn longitude system (SLS) based on the results of Kurth et al. (2007). This paper presents results of our findings to date, sampling a large…
Infrared Study of J-Type Carbon Stars Based on Infrared Astronomical Satellite, Two Micron All Sky Survey, and Infrared Space Observatory Data
Chen, Pei-Sheng; Yang, Xiao-Hong; Zhang, Pin
We collected 113 J-type carbon stars from the published literature. Observations from 2MASS, IRAS, and ISO show that, except for silicate carbon stars in the J-type carbon star domain, the infrared properties of the other J-type carbon stars are quite similar to those of ordinary carbon stars. The above results imply that the chemical peculiarity …
XMM-Newton observation of Mrk 110
Balestra, I.; Boller, Th.; Kollatschny, W.
Context: We report on the first XMM-Newton observation of the bright narrow-line Seyfert 1 galaxy Mrk 110.
Aims: Our analysis is aimed to study the properties of the X-ray spectrum of Mrk 110 and compare them with those inferred from optical spectroscopy.
Methods: We make use of detailed timing and spectral analysis as well as high resolut…
The Structure and Dynamics of the Quiet Corona from Observations with the Extreme Ultraviolet Imaging Spectrometer on Hinode
Harra, Louise K.; Doschek, George A.; Hansteen, Viggo H. +4 more
The goal of the Hinode mission is to provide an observational basis for understanding the heating and acceleration of coronal plasmas. On 2007 January 20, the Extreme ultraviolet Imaging Spectrometer performed a raster of a quiet region near Sun center. Maps of intensities, velocities, and electron densities derived from these observations are pre…
Astrometry with Carte du Ciel plates, San Fernando zone. I. Digitization and measurement using a flatbed scanner
Abad, C.; Vicente, B.; Garzón, F.
Context: The historic plates of the Carte du Ciel, an international cooperative project launched in 1887, offers valuable first-epoch material for determining of absolute proper motions.
Aims: We present an original method of digitizing and astrometrically reducing Carte du Ciel plate material using an inexpensive flatbed scanner, to demonstra…