Search Publications
An HST morphological survey of faint extremely red objects
Ivison, R. J.; Smail, Ian; Packham, C. +1 more
We present the results from a survey for extremely red objects (EROs) in deep, high-resolution optical images taken from the Hubble Space Telescope (HST) Medium Deep Survey. We have surveyed 35 deep F814W HST/WFPC2 fields in the near-infrared to a typical depth of K>~ 20. From a total area of 206 arcmin2 and to a limit of K= 20.0, we…
XMM-Newton observations of Nova LMC 2000
Greiner, J.; Schartel, N.; Orio, M.
We report on three X-ray observations of Nova LMC 2000 with XMM-Newton at 17, 51 and 294 days after the maximum, respectively. X-ray spectral fits show a concordant decrease of the absorbing column and the X-ray luminosity. No supersoft X-ray emission is detected. The mass of the ejected shell is determined to be (less than) 7.5 x 10-5 …
Oxygen Abundance in the Template Halo Giant HD 122563
Damineli, Augusto; Hill, Vanessa; Meléndez, Jorge +7 more
HD 122563 is a well-known bright (V=6.2) halo giant of low metallicity ([Fe/H]~-2.7). We have observed HD 122563 for infrared OH lines at 1.5-1.7 µm in the H band with the NIRSPEC high-resolution spectrograph at the 10 m Keck Telescope. Optical spectra were obtained with the UVES spectrograph at the 8 m VLT UT2 telescope at ESO (Paranal) and…
XMM-Newton study of the persistent X-ray source 1E 1743.1-2843 located in the Galactic Center direction
Goldoni, P.; Rodriguez, J.; Decourchelle, A. +4 more
We report the results of an XMM-Newton observation of the persistent X-ray source
EPIC simulations of the merger of Jupiter's White Ovals BE and FA: altitude-dependent behavior
Dowling, Timothy E.; Sánchez-Lavega, Agustín.; Morales-Juberías, Raúl
Observations of the merger of Jupiter's White Ovals BE and FA show altitude-dependent behavior that we seek to capture in numerical simulations. In particular, it was observed that the upper portions of the vortices orbited each other before merging, but the lower portions translated into each other without orbiting, a phenomenon we term the pair-…
The Globular Cluster System of the Spiral Galaxy NGC 7814
Zepf, Stephen E.; Rhode, Katherine L.
We present the results of a wide-field photometric study of the globular cluster (GC) system of the edge-on Sab spiral NGC 7814. This is the first spiral to be fully analyzed from our survey of the GC systems of a large sample of galaxies beyond the Local Group. NGC 7814 is of particular interest because a previous study estimated that it has 500-…
X-Ray Rotational Modulation in VXR45
Micela, G.; Peres, G.; Sciortino, S. +1 more
We present evidence of X-ray rotational modulation on VXR45, a young very fast rotator star member of IC2391 open cluster, observed with XMM-Newton observatory.
A study of the unification of quiet-Sun transient-event phenomena
Harrison, R. A.; Brković, A.; Harra, L. K. +1 more
A number of small-scale, globally distributed solar transient event-types have been reported in the literature. Their potential role in fundamental processes in the solar atmosphere, such as coronal heating and wind acceleration, is under active investigation. However, the event-types, such as those known as blinkers, explosive events, EUV (extrem…
The complex FeK line of the Narrow-Line Seyfert 1 galaxy IRAS 13349+2438
Nandra, K.; Cappi, M.; Dadina, M. +2 more
The observation of the Narrow-Line Seyfert 1 galaxy IRAS 13349+2438 performed by XMM-Newton European Photon Imaging Camera between 0.3-10 keV, is presented here. The broadband spectrum of the source is dominated at low energies (E <=2 keV) by a strong excess of emission and by complex emission/absorption features between ~ 5.5-8.0 keV. The soft…
The Small Magellanic Cloud in the far infrared. I. ISO's 170 mu m map and revisit of the IRAS 12-100 mu m data
Lemke, D.; Klaas, U.; Haas, M. +3 more
The ISOPHOT experiment onboard the ISO satellite generated a complete view of the Small Magellanic Cloud (SMC) at 170 mu m with 1.5 arcmin resolution. The map is analysed using an automated photometry program enabling accurate photometric characterization of the far infrared (FIR) emitting regions. An integrated FIR luminosity of 8.5x 107