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Two rings but no fellowship: LoTr 1 and its relation to planetary nebulae possessing barium central stars
Boumis, P.; Pollacco, D.; Santander-García, M. +8 more
LoTr 1 is a planetary nebula thought to contain an intermediate-period binary central star system (that is, a system with an orbital period, P, between 100 and, say, 1500 d). The system shows the signature of a K type, rapidly rotating giant and most likely constitutes an accretion-induced post-mass-transfer system similar to other PNe, such as Lo…
Herschel-SPIRE Fourier transform spectroscopy of the nearby spiral galaxy IC 342
Magdis, G. E.; Rigopoulou, D.; Pellegrini, E. +9 more
We present observations of the nearby spiral galaxy IC 342 with the Herschel Spectral and Photometric Imaging Receiver (SPIRE) Fourier transform spectrometer. The spectral range afforded by SPIRE, 196-671 µm, allows us to access a number of 12CO lines from J = 4-3 to J = 13-12 with the highest J transitions observed for the first …
The use and calibration of read-out streaks to increase the dynamic range of the Swift Ultraviolet/Optical Telescope
Carter, M.; Page, M. J.; Symeonidis, M. +12 more
The dynamic range of photon counting micro-channel-plate (MCP) intensified charged-coupled device (CCD) instruments such as the Swift Ultraviolet/Optical Telescope (UVOT) and the XMM-Newton Optical Monitor (XMM-OM) is limited at the bright end by coincidence loss, the superposition of multiple photons in the individual frames recorded by the CCD. …
The imprint of the crustal magnetic field on the thermal spectra and pulse profiles of isolated neutron stars
Rea, Nanda; Viganò, Daniele; Perna, Rosalba +1 more
Isolated neutron stars (NSs) show a bewildering variety of astrophysical manifestations, presumably shaped by the magnetic field strength and topology at birth. Here, using state-of-the-art calculations of the coupled magnetic and thermal evolution of NSs, we compute the thermal spectra and pulse profiles expected for a variety of initial magnetic…
XMM-Newton observations of the Galactic Centre Region - I. The distribution of low-luminosity X-ray sources
Warwick, R. S.; Heard, V.
We exploit XMM-Newton archival data in a study of the extended X-ray emission emanating from Galactic Centre (GC) region. XMM-Newton EPIC-pn and EPIC-MOS observations, with a total exposure time approaching 0.5 and 1 Ms, respectively, were used to create mosaicked images of a 100 pc × 100 pc region centred on Sgr A* in four bands covering the 2-10…
The thermal dust emission in N158-N159-N160 (LMC) star-forming complex mapped by Spitzer, Herschel and LABOCA
van Loon, J. Th.; Okumura, K.; Lebouteiller, V. +21 more
Low-metallicity galaxies exhibit different properties of the interstellar medium (ISM) compared to nearby spiral galaxies. Obtaining a resolved inventory of the various gas and dust components of massive star-forming regions and diffuse ISM is necessary to understand how those differences are driven. We present a study of the infrared/submillimetr…
On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044
Mukai, K.; de Martino, D.; Masetti, N. +7 more
The INTEGRAL and Swift hard X-ray surveys have identified a large number of new sources, among which many are proposed as Cataclysmic Variables (CVs). Here, we present the first detailed study of three X-ray-selected CVs, Swift J1907.3-2050, IGR J12123-5802 and IGR J19552+0044 based on XMM-Newton, Suzaku, Swift observations and ground-based optica…
Two new ultracool benchmark systems from WISE+2MASS
Marocco, F.; Pinfield, D. J.; Jones, H. R. A. +6 more
We have used the Two-Micron All-Sky Survey and the Wide-field Infrared Survey Explorer to look for ultracool dwarfs that are part of multiple systems containing main-sequence stars. We cross-matched L dwarf candidates from the surveys with Hipparcos and Gliese stars, finding two new systems. The first system, G255-34AB, is an L2 dwarf companion to…
The star formation history of the Large Magellanic Cloud star clusters NGC 1846 and NGC 1783
Girardi, Léo; Marigo, Paola; Goudfrooij, Paul +4 more
NGC 1846 and NGC 1783 are two massive star clusters in the Large Magellanic Cloud, hosting both an extended main-sequence turn-off and a dual clump of red giants. They present similar masses but differ mainly in angular size. Starting from their high-quality ACS data in the F435W, F555W and F814W filters, and updated sets of stellar evolutionary t…
The XMM-Large Scale Structure catalogue - II. X-ray sources and associated multiwavelength data
Chiappetti, L.; Pierre, M.; Surdej, J. +8 more
We present the final release of the multiwavelength XMM-Large Scale Structure (LSS) data set, covering the full survey area of 11.1 deg2, with X-ray data processed with the latest XMM-LSS pipeline version. The present publication supersedes the catalogue from the first paper in this series, pertaining to the initial 5 deg2. W…