Search Publications
The Geometry of Mass Outflows and Fueling Flows in the Seyfert 2 Galaxy MRK 3
Kraemer, S. B.; Crenshaw, D. M.; Schmitt, H. R. +4 more
We present a study of the resolved emission-line regions and an inner dust/gas disk in the Seyfert 2 galaxy Mrk 3, based on Hubble Space Telescope observations. We show that the extended narrow-line region (ENLR), spanning ~4 kpc, is defined by the intersection of the ionizing bicone of radiation from the active galactic nucleus (AGN) and the inne…
Physical and morphological properties of z ~ 3 Lyman break galaxies: dependence on Lyα line emission
Castellano, M.; Pentericci, L.; Fontana, A. +4 more
Aims: We investigate the physical and morphological properties of Lyman break galaxies (LBGs) at redshift ~2.5 to ~3.5, to determine if and how they depend on the nature and strength of the Lyα emission.
Methods: We selected U-dropout galaxies from the z-detected GOODS-MUSIC catalog by adapting the classical Lyman break criteria on the G…
Evidence for Gamma-ray Emission from the Low-mass X-ray Binary System First J102347.6+003841
Cheng, K. S.; Takata, J.; Kong, A. K. H. +6 more
The low-mass X-ray binary (LMXB) system FIRST J102347.6+003841 hosts a newly born millisecond pulsar (MSP) PSR J1023+0038 that was revealed as the first and only known rotation-powered MSP in a quiescent LMXB. While the system is shown to have an accretion disk before 2002, it remains unclear how the accretion disk has been removed in order to rev…
Cold dust and young starbursts: spectral energy distributions of Herschel SPIRE sources from the HerMES survey
Aussel, H.; Elbaz, D.; Valtchanov, I. +75 more
We present spectral energy distributions (SEDs) for 68 Herschel sources detected at 5σ at 250, 350 and 500 µm in the HerMES SWIRE-Lockman field. We explore whether existing models for starbursts, quiescent star-forming galaxies and active galactic nucleus dust tori are able to model the full range of SEDs measured with Herschel. We find that…
Herschel observations of EXtra-Ordinary Sources (HEXOS): Detection of hydrogen fluoride in absorption towards Orion KL
Menten, K. M.; Martin, P. G.; Murphy, J. A. +52 more
We report a detection of the fundamental rotational transition of hydrogen fluoride in absorption towards Orion KL using Herschel/HIFI. After the removal of contaminating features associated with common molecules (“weeds”), the HF spectrum shows a P-Cygni profile, with weak redshifted emission and strong blue-shifted absorption, associated with th…
Magnetopause oscillations near the planetary period at Saturn: Occurrence, phase, and amplitude
Coates, A. J.; Andrews, D. J.; Cowley, S. W. H. +2 more
Using magnetic field and plasma electron data from ∼40 Cassini orbits that crossed Saturn's magnetopause during 2004-2007, we make a first systematic study of the magnetopause oscillations that are related to the oscillations in the magnetic field and plasma inside the magnetosphere near the ∼11 h planetary rotation period, here termed the magneto…
Photometry and spectroscopy of GRB 060526: a detailed study of the afterglow and host galaxy of a z = 3.2 gamma-ray burst
Dahle, H.; Covino, S.; Ganesh, S. +59 more
Aims: With this paper we want to investigate the highly variable afterglow light curve and environment of gamma-ray burst (GRB) 060526 at z = 3.221.
Methods: We present one of the largest photometric datasets ever obtained for a GRB afterglow, consisting of multi-color photometric data from the ultraviolet to the near infrared. The data …
Metastability of current sheets
Petrukovich, A. A.; Nakamura, R.; Zelenyi, Lev M. +2 more
Herschel images of NGC 6720: H2 formation on dust grains
Walker, H. J.; Ivison, R. J.; Blommaert, J. A. D. L. +27 more
Herschel PACS and SPIRE images have been obtained of NGC 6720 (the Ring nebula). This is an evolved planetary nebula with a central star that is currently on the cooling track, due to which the outer parts of the nebula are recombining. From the PACS and SPIRE images we conclude that there is a striking resemblance between the dust distribution an…
An XMM-Newton Survey of the Soft X-ray Background. I. The O VII and O VIII Lines Between l = 120° and l = 240°
Henley, David B.; Shelton, Robin L.
We present measurements of the soft X-ray background (SXRB) O VII and O VIII intensity between l = 120° and l = 240°, the first results of a survey of the SXRB using archival XMM-Newton observations. We do not restrict ourselves to blank-sky observations, but instead use as many observations as possible, removing bright or extended sources by hand…