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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…
Effervescent heating: constraints from nearby cooling flow clusters observed with XMM-Newton
Kaastra, J. S.; Piffaretti, R.
Aims.We have used deprojected radial density and temperature profiles of a sample of 16 nearby CF clusters observed with XMM-Newton to test whether the effervescent heating model can satisfactorily explain the dynamics of CF clusters.
Methods.For each cluster we derived the required extra heating as a function of cluster-centric distance for va…
XMM-Newton discovery of the X-ray transient XMMU J181227.8-181234 in the Galactic plane
Cackett, Edward M.; Wijnands, Rudy; Remillard, Ron
We report the discovery of an X-ray transient, observed in outburst with XMM-Newton on 2003 March 20, and with position (J2000, approximate positional error 2arcsec). No known source is present at this position and the source was not detected during published ROSAT or ASCA observations of that region. However, the source may be associated with 1H1…
The Concept of a Stare-Mode Astrometric Space Mission
Zacharias, N.; Dorland, B.
In this paper, we introduce the concept of a stare-mode astrometric space mission. The traditionally accepted mode of operation for a mapping astrometric space mission is that of a continuously scanning satellite, such as the successful Hipparcos and planned Gaia missions. With the advent of astrometry missions mapping out stars to 20th magnitude,…