Search Publications
Mapping the complex kinematics of LL objects in the Orion nebula
O'Dell, C. R.; García-Díaz, Ma. T.; Henney, William J. +1 more
LL Orionis-type objects (LL objects) are hyperbolic bowshocks visible around young stars in the outer Orion nebula, many of which are also associated with curved, highly collimated jets. The bowshocks are clearly due to the supersonic interaction between an outflow from the young star and an environmental flow from the core of the nebula, but the …
Contrasting behaviour from two Be/ X-ray binary pulsars: insights into differing neutron star accretion modes
Hill, A. B.; Coe, M. J.; Bird, A. J. +4 more
In this paper we present the identification of two periodic X-ray signals coming from the direction of the Small Magellanic Cloud (SMC). On detection with the Rossi X-ray Timing Explorer (RXTE), the 175.4 s and 85.4 s pulsations were considered to originate from new Be/ X-ray binary (BeXRB) pulsars with unknown locations. Using rapid follow-up INT…
Extragalactic point source detection in Wilkinson Microwave Anisotropy Probe 7-year data at 61 and 94 GHz
de Zotti, G.; González-Nuevo, J.; Herranz, D. +4 more
The detection of point sources in cosmic microwave background maps is usually based on a single-frequency approach, whereby maps at each frequency are filtered separately and the spectral information on the sources is derived combining the results at the different frequencies. In contrast, in the case of multifrequency detection methods, source de…
Mid-infrared and X-ray luminosity correlations of X-ray point sources in NGC 1399
Shalima, P.; Jithesh, V.; Jeena, K. +5 more
It is known that the infrared (IR) and X-ray luminosities of active galactic nuclei (AGN) are correlated with LIR ∼ LX. Moreover, the IR flux ratio between the 5.8 and 3.6 µm bands is a good distinguishing characteristic of AGN or AGN-like behaviour. On the other hand, Galactic X-ray binaries (GXB) are underluminous in …
A family of cometary globules at the periphery of Cyg OB1: the star HBHA 3703-01 and the reflection nebula GM 2-39
Lozinskaya, T. A.; Arkhipova, V. P.; Egorov, O. V. +7 more
The interstellar medium in the region of a family of cometary globules including the reflection nebula GM 2-39 has been analysed based on our observations with a slit spectrograph, the results of our previous observations with a Fabry-Perot interferometer in the Hα line and Spitzer archival data (Hora et al.), together with CO microwave data (Leun…
The preferentially magnified active nucleus in IRAS F10214+4724 - I. Lens model and spatially resolved radio emission
Heywood, I.; Serjeant, S.; Deane, R. P. +5 more
This is the first paper in a series that presents a multiwavelength analysis of the archetype ultraluminous infrared galaxy IRAS F10214+4724, a gravitationally lensed, starburst/active galactic nucleus at z = 2.3. Here we present a new lens model and spatially resolved radio data, as well as a deep Hubble Space Telescope (HST) F160W map. The lens …
Dust properties of clumpy disc galaxies at z ∼ 1.3 with Herschel-SPIRE
Glazebrook, Karl; Blake, Chris; Wisnioski, Emily +1 more
We present the far-infrared-derived dust properties from Herschel Spectral and Photometric Imaging Receiver of the WiggleZ kinematic sample of 13 star-forming galaxies at z ∼ 1.3, with existing ancillary ∼kpc resolution integral field spectroscopy. We detect three galaxies individually and place limits on the remainder by stacking. The detected ga…
SDSS J002531.46-104022.2 at z = 0.30: a candidate for the (ultra)luminous infrared galaxy to optical quasar transition
Villar-Martín, M.; Drouart, G.; Emonts, B. +2 more
Using data obtained with the Australia Telescope Compact Array (ATCA), we have characterized the amount, spatial distribution and kinematics of the molecular gas in the merging, double-nucleus type 2 quasar (QSO) SDSS J002531.46-104022.2 (hereafter SDSS J0025-10) at z = 0.30 using the CO(1-0) transition. This is one of the scarce examples of quasa…
Attempt to detect the granulation signature in the HgMn star HD 175640 from CoRoT light curves
Alecian, G.; Ghazaryan, S.; Harutyunian, H.
HgMn stars are affected by atomic diffusion processes. Because theoretical models based on atomic diffusion require that the atmospheres of ApBp stars have to be much more stable than those of normal stars, the detection or the absence of detection of granulation in them should be an interesting information for the modelling. We would like to addr…
Confirmation of the nature of the absorber in IRAS 09104+4109
Fabian, A. C.; Gandhi, P.; Cackett, E. M. +1 more
We present the first long Suzaku observation of the hyperluminous infrared galaxy IRAS 09104+4109 which is dominated by a Type 2 AGN. The infrared to X-ray spectral energy distribution (SED) indicates that the source is an obscured quasar with a Compton-thin absorber. However, the 3σ hard X-ray detection of the source with the BeppoSAX PDS suggest…