Search Publications
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…
Evidence of accretion triggered oscillations in the pre-main-sequence interacting binary AK Sco.
Talavera, A.; Lopez-Santiago, J.; Gomez de, C. A. I.
Pre-main sequence (PMS) binaries are surrounded by circumbinary discs from which matter falls on to both components. The material dragged from the circumbinary disc flows on to each star through independent streams channelled by the variable gravitational field. The action of the bar-like potential is most prominent in high eccentricity systems ma…
X-ray and multiwavelength insights into the inner structure of high-luminosity disc-like emitters
Brandt, W. N.; Wu, Jian; Luo, B. +5 more
We present X-ray and multiwavelength studies of a sample of eight high-luminosity active galactic nuclei (AGN) with disc-like Hβ emission-line profiles selected from the Sloan Digital Sky Survey Data Release 7. These sources have higher redshift (z ≈ 0.6) than the majority of the known disc-like emitters, and they occupy a largely unexplored space…
Investigation of dust properties of the proto-planetary nebula IRAS 18276-1431
Maud, L. T.; Izumiura, H.; Murakawa, K. +1 more
We investigate the circumstellar dust properties of the oxygen-rich bipolar proto-planetary nebula (PPN) IRAS 18276-1431 by means of two-dimensional radiative transfer simulations of the circumstellar dust shell. The model geometry is assumed to have a torus and an envelope which consists of a pair of bipolar lobes and a spherical asymptotic giant…
A 20 GHz bright sample for δ > 72° - II. Multifrequency follow-up
Prandoni, I.; Ricci, R.; Massardi, M. +10 more
We present follow-up observations at 5, 8 and 30 GHz of the K-band Northern Wide Survey (KNoWS) 20 GHz Bright Sample, performed with the 32-m Medicina radio telescope and the 32-m Toruń radio telescope. The KNoWS sources were selected in the Northern Polar Cap (δ > 72°) and have a flux density limit S20 GHz = 115 mJy. We include NRAO…