Search Publications
Dust and cloud detection at the Mars limb with UV scattered sunlight with SPICAM
Montmessin, F.; Korablev, O.; Bertaux, J. -L. +3 more
The UV detector of Spectroscopy for the Investigation of the Characteristics of the Atmosphere of Mars (SPICAM) on board Mars Express has measured several profiles of light scattered at the limb of Mars. In this paper we present 33 profiles taken between January 2004 and August 2005. Scattering of UV light at the limb of Mars is due to the molecul…
Spatially Resolved Narrow-Line Region Kinematics in Active Galactic Nuclei
Shields, Joseph C.; Greene, Jenny E.; Pogge, Richard W. +4 more
We have analyzed Hubble Space Telescope spectroscopy of 24 nearby active galactic nuclei (AGNs) to investigate spatially resolved gas kinematics in the narrow-line region (NLR). These observations effectively isolate the nuclear line profiles on less than 100 pc scales and are used to investigate the origin of the substantial scatter between the w…
The Properties and Redshift Evolution of Intermediate-Luminosity Off-Nuclear X-Ray Sources in the Chandra Deep Fields
Lehmer, B. D.; Hornschemeier, A. E.; Alexander, D. M. +5 more
We analyze a population of intermediate-redshift (z~0.05-0.3) off-nuclear X-ray sources located within optically bright galaxies in the Great Observatories Origins Deep Survey and Galaxy Evolution from Morphology and SEDs fields. A total of 24 off-nuclear source candidates are classified using deep Chandra X-Ray Observatory exposures from the Chan…
Science objectives and first results from the SMART-1/AMIE multicolour micro-camera
Langevin, Y.; Koschny, D.; Barucci, M. A. +16 more
The Advanced Moon micro-Imager Experiment (AMIE), on-board SMART-1, the first European mission to the Moon, is an imaging system with scientific, technical and public outreach objectives. The science objectives are to image the lunar South Pole, permanent shadow areas (ice deposit), eternal light (crater rims), ancient lunar non-mare volcanism, lo…
ACS Photometry of the Remote M31 Globular Cluster B514
Bellazzini, M.; Galleti, S.; Federici, L. +2 more
We present deep F606W, F814W ACS photometry of the recently discovered globular cluster B514, the outermost known globular in the M31 galaxy. The cluster appears quite extended, and member stars are unequivocally identified out to ~200 pc from the center. The color-magnitude diagram reveals a steep red giant branch (RGB), and a horizontal branch e…
New insights on the complex planetary nebula Hen 2-113
Lopez, B.; Chesneau, O.; Zijlstra, A. A. +6 more
We report on infrared observations of the planetary nebula Hen 2-113 obtained with VLT/NACO, VLTI/MIDI, VLT/ISAAC and TIMMI at the ESO 3.6 m. Hen 2-113 exhibits a clear ring-like structure superimposed to a more diffuse environment visible in the L' (3.8 µm), M' (4.78 µm) and 8.7 µm bands. No clear core at 8.7 µm and no fri…
The Remarkable Be Star HD 110432 (BZ Crucis)
Smith, Myron A.; Balona, Luis
HD 110432 (B1e) has gained considerable recent attention because it is a hard, variable X-ray source with local absorption and also because its optical spectrum is affected by an extensive Be disk. From time-serial echelle data obtained over 2 weeks during 2005 January and February, we have discovered several remarkable characteristics in the star…
Are halo coronal mass ejections special events?
Gopalswamy, Nat; Xie, Hong; Lara, Alejandro +3 more
We revisited the properties of wide coronal mass ejections (CMEs) called halo CMEs. Using the large LASCO/SOHO CMEs data set, from 1996 to 2004, we examined the statistical properties of (partial and full) halo CMEs and compare with the same properties of "normal" width (lower than 120°) CMEs. We found that halo CMEs have different properties than…
Kinetic properties of heavy solar wind ions from Ulysses-SWICS
Zurbuchen, T. H.; von Steiger, R.
The kinetic properties of heavy ions in the solar wind reflect the plasma processes governing the solar wind in the heliosphere. We use Ulysses-SWICS data that resolve heavy ions in a wide range of mass-per-charge values, 2 <= m/q <= 9.33, to investigate the heavy ions and their dynamic evolution throughout the heliosphere. While at 1 AU the…
Metallicity and absolute magnitude calibrations for UBV photometry
Karataş, Y.; Schuster, W. J.
Calibrations are presented here for metallicity ([Fe/H]) in terms of the ultraviolet excess, [δ(U - B) at B - V = 0.6, hereafter δ0.6], and also for the absolute visual magnitude (MV) and its difference with respect to the Hyades (ΔMHV) in terms of δ0.6 and (B - V), making use of high-resoluti…