Learn More
The reversible self-assembly of a series of bipolar amphiphiles, alpha,omega-bis(3- or 4-amidinophenoxy)alkanes (chain length n = 5-12), on mercaptoalkanoic acid-functionalized gold surfaces (chain length n = 10, 11, 14, 15) has been studied by in-situ ellipsometry, IR reflection absorption spectroscopy (IRAS), and atomic force microscopy (AFM). The layer(More)
  • M . D ICKINSON, G . M ORRISON, +11 authors M . M IGNOLI
  • 2008
Examining a sample of massive galaxies at 1.4 < z < 2.5, we present a systematic intercomparison of photometry at various wavelengths that are sensitive to energy from star formation, in order to examine the degree to which different tracers do or do not agree, and to explore the implications for star formation and galaxy assembly. We use some of the(More)
The ≈ 1 Ms Chandra Deep Field North observation is used to study the extended X-ray sources in the region surrounding the Hubble Deep Field North (HDF-N), yielding the most sensitive probe of extended X-ray emission at cosmological distances to date. A total of six such sources are detected, the majority of which align with small numbers of optically bright(More)
We report on the first ten identifications of sources serendipitously detected by the Nuclear Spectroscopic Telescope Array (NuSTAR) to provide the first sensitive census of the cosmic X-ray background (CXB) source population at > ∼ 10 keV. We find that these NuSTAR-detected sources are ≈ 100 times fainter than those previously detected at > ∼ 10 keV and(More)
  • A . E . H ORNSCHEMEIER, Frank Auer, +6 authors G . W ILSON
  • 2008
We have analyzed optically bright, X-ray faint [OBXF; i.e., log( fX fR ) < ∼ − 2] sources identified in an 178.9 arcmin2 area having high exposure (> 1500 ks) within the Chandra Deep Field-North (CDF-N) 2 Ms survey. We find 43 OBXF sources in this area, comprising ≈ 15% of the X-ray sources above a 0.5–2 keV flux of ≈ 2.3×10−17 erg cm−2 s−1. We present(More)
  • E . D ADDI, D . M . A LEXANDER, +16 authors S . R AVINDRANATH
  • 2008
We investigate the nature of a population of z ∼ 2 galaxies that shows a distinct mid-IR excess flux density at 24μm with respect to that expected from the star formation rate as estimated at radio, UV, 70μm, soft X-ray, and submm wavelengths. These mid-IR excess galaxies, identified in the Great Observatories Origins Deep Survey (GOODS), represent ≈ 20–30%(More)
  • GALAXIES D . M . A LEXANDER, H . A USSEL, +5 authors D . P . S CHNEIDER
  • 2008
Using the 1 Ms Chandra Deep Field North and 15 μm ISOCAM HDF-N surveys we find a tight correlation between the population of strongly evolving starbursts discovered in faint 15 μm ISOCAM surveys and the apparently normal galaxy population detected in deep X-ray surveys. Up to 100% of the X-ray detected emission-line galaxies (ELGs) have 15 μm counterparts,(More)
The aim of this paper is to give an overview of the semiconductor solutions for the micro-hybrid automotive systems as based on the technologies existing today. First, the motivation for the micro-hybrid, especially for the belt driven starter alternator, is given, followed by the system overview. Alternator in question is the Lundell type alternator with(More)
  • D . M . A LEXANDER, C . V IGNALI, +4 authors D . P . S CHNEIDER
  • 2008
The multi-wavelength properties of Very Red Objects (VROs; I −K ≥ 4) are largely unknown as many of these sources are optically faint (I ≥ 24) and undetected at most wavelengths. Here we provide constraints on the X-ray (0.5–8.0 keV) properties of VROs using the 1 Ms Chandra exposure of an 8.4 × 8.4 region within the Hawaii Flanking-Field area containing(More)