Search Publications
Low mass pre-main sequence stars in the Large Magellanic Cloud
Panagia, N.; Romaniello, M.; Blanco, C. +2 more
As a part of an ongoing effort to characterise the young stellar populations in the Large Magellanic Cloud, we present HST-WFPC2 broad and narrow band imaging of two fields with recent star formation activity in the Tarantula region. A population of objects with Hα and/or Balmer continuum excess was identified. On account of the intense Hα emissio…
Macrospicules and blinkers as seen in Shutterless EIT 304 Å
Doyle, J. G.; Madjarska, M. S.; Hochedez, J. -F. +1 more
Aims.Small-scale transient phenomena in the solar atmosphere are believed to play a crucial role in the coronal heating and solar wind generation. This study aims at providing new observational evidence on blinkers and macrospicules appearance in imager data and in doing so, establish the long disputed relationship between these phenomena.
Met…
Spatial and Temporal Scales of Coronal Magnetic Restructuring in the Development of Coronal Mass Ejections
Wen, Yayuan; Wang, Jingxiu; Zhao, Hui +3 more
It has been commonly accepted that coronal mass ejections (CMEs) result from the restructuring or reconfiguring of large-scale coronal magnetic fields. In this paper, we analyzed four CME events using Nançay Radioheliograph (NRH) images and the experiments onboard the Solar and Heliospheric Observatory (SOHO) spacecraft to understand the coronal r…
An XMM-Newton Search for X-Ray Emission from the Microlensing Event MACHO-96-BLG-5
Kaastra, J. S.; de Plaa, J.; Elia, D. +3 more
MACHO-96-BLG-5 was a microlensing event observed toward the bulge of the Galaxy with an exceptionally long duration of ~970 days. The microlensing parallax fit parameters were used to estimate a lens mass M=6+10-3 Msolar, corresponding to a distance d in the range 0.5-2 kpc. The upper limit on the absolute brightne…
The Starburst-Interstellar Medium Interaction in NGC 1569. II. Small-Scale Examination of Nebular Emission, H II Region Size Distribution, and H II Region Luminosity Function
Kobulnicky, Henry A.; Buckalew, Brent A.
As the nearest dramatic example of a poststarburst galaxy driving a galactic wind, NGC 1569 is an ideal test environment to understand the impact of ``feedback'' from massive star lives and deaths on the surrounding interstellar medium. We present Hubble Space Telescope Wide Field Planetary Camera 2 narrowband imagery of NGC 1569 in an attempt to …
Experimental study of nonlinear interaction of plasma flow with charged thin current sheets: 2. Hall dynamics, mass and momentum transfer
Khotyaintsev, Y.; Gough, M. P.; Reme, H. +19 more
Proceeding with the analysis of Amata et al. (2005), we suggest that the general feature for the local transport at a thin magnetopause (MP) consists of the penetration of ions from the magnetosheath with gyroradius larger than the MP width, and that, in crossing it, the transverse potential difference at the thin current sheet (TCS) is acquired b…
Mass-dependent Color Evolution of Field Galaxies back to z~3 over the Wide Range of Stellar Mass
Yamada, T.; Kajisawa, M.
We use deep multiband optical and near-infrared data for four general fields, GOODS-South, HDF-North/South, and IRAC UDF in GOODS-North to investigate the evolution of the observed rest-frame U-V color of field galaxies as a function of the stellar mass evaluated by fitting the galaxy spectral models to the observed broadband SEDs. In these four f…
A Simple Model of the Effect of Solar Array Orientation on SMART-1 Floating Potential
Hilgers, A.; Thiebault, B.; Estublier, D. +6 more
Morphology and kinematics of the ionised gas in early-type galaxies
Bacon, Roland; Krajnović, Davor; Emsellem, Eric +10 more
We present results of our ongoing study of the morphology and kinematics of the ionised gas in 48 representative nearby elliptical and lenticular galaxies using the SAURON integral-field spectrograph on the 4.2m William Herschel Telescope. Making use of a recently developed technique, emission is detected in 75% of the galaxies. The ionised-gas di…
Vertical atmospheric flow on Titan as measured by the HASI instrument on board the Huygens probe
Tokano, Tetsuya; Ferri, Francesca; Mäkinen, J. Teemu T. +3 more
On January 14, 2005, the Huygens probe descended on the surface of Titan, the largest moon of Saturn and the only moon in the Solar system with a substantial atmosphere. After the deployment of the main parachute and the release of the heat shield at an altitude of about 150 km, the local pressure and temperature were measured by HASI (Huygens Atm…