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INTEGRAL deep observations of the Small Magellanic Cloud

Haberl, F.; Zezas, A.; Udalski, A. +12 more

Deep observations of the Small Magellanic Cloud (SMC) and region were carried out in the hard X-ray band by the INTEGRAL observatory in 2008-2009. The field of view of the instrument permitted simultaneous coverage of the entire SMC and the eastern end of the Magellanic Bridge. In total, INTEGRAL detected seven sources in the SMC and five in the M…

HerMES: SPIRE detection of high-redshift massive compact galaxies in GOODS-N field

Altieri, B.; Elbaz, D.; Pérez-Fournon, I. +47 more

We have analysed the rest-frame far-infrared properties of a sample of massive (M_* > 10¹¹M_solar) galaxies at 2 <~ z <~ 3 in the Great Observatories Origins Deep Survey-North (GOODS-N) field using the Spectral and Photometric Imaging Receiver (SPIRE) instrument aboard the Herschel Space Observatory. To cond…

Inverse-Compton X-rays from giant radio galaxies at z ~ 1

Fabian, A. C.; Laskar, T.; Blundell, K. M. +1 more

We report XMM-Newton observations of three FR II radio galaxies at redshifts between 0.85 and 1.34, which show extended diffuse X-ray emission within the radio lobes, likely due to inverse-Compton up-scattering of the cosmic microwave background. Under this assumption, through spectrum fitting together with archival Very Large Array radio observat…

A study of the interacting binary V393Scorpii

Mennickent, R. E.; Kołaczkowski, Z.; Graczyk, D. +1 more

We present high-resolution J-band spectroscopy of V393Sco obtained with the Cryogenic High-Resolution Infrared Echelle Spectrograph (CRIRES) at the ESO Paranal Observatory along with a discussion of archival International Ultraviolet Explorer (IUE) spectra and published broad-band magnitudes. The best fit to the spectral energy distribution outsid…

AXJ1749.1-2733 and AXJ1749.2-2725 - the close pair of X-ray pulsars behind the Galactic Centre: an optical identification

Lutovinov, A. A.; Karasev, D. I.; Burenin, R. A.

Two faint X-ray pulsars, AXJ1749.2-2725 and AXJ1749.1-2733, located in the direction of the Galactic Centre, were studied in detail using data from the INTEGRAL, XMM-Newton and Chandra observatories in X-rays, the SOFI/NTT instrument in the infrared and the RTT150 telescope in the optical. X-ray positions of both sources were determined with an un…

Ionized gas outflow in the isolated S0 galaxy NGC 4460

Kaisin, Serafim; Karachentsev, Igor; Moiseev, Alexei

We used integral-field and long-slit spectroscopy to study a bright extended nebulosity recently discovered in the isolated lenticular galaxy NGC 4460 during an Hα survey of nearby galaxies. An analysis of archival Sloan Digital Sky Survey, GALEX and Hubble Space Telescope images indicates that current star formation is entirely concentrated in th…

The low-redshift Lyα forest towards 3C 273

Tripp, Todd M.; Jenkins, Edward B.; Sembach, Kenneth R. +6 more

We present an analysis of the Lyα forest towards 3C 273 from the Space Telescope Imaging Spectrograph at ~7kms^-1 resolution, along with reprocessed data from the Far Ultraviolet Spectroscopic Explorer. The high ultraviolet flux of 3C 273 allows us to probe the weak, low-z absorbers. The main sample consists of 21 HI absorbers that we co…

Propagation of a sausage soliton in the solar lower atmosphere observed by Hinode/SOT

Khodachenko, M. L.; Zaqarashvili, T. V.; Kukhianidze, V.

Acoustic waves and pulses propagating from the solar photosphere upwards may quickly develop into shocks due to the rapid decrease of atmospheric density. However, if they propagate along a magnetic flux tube, then the non-linear steepening may be balanced by tube dispersion effects. This may result in the formation of a sausage soliton. The aim o…

Rotational variation of the spectral slope of (21) Lutetia, the second asteroid target of ESA Rosetta mission

Barbieri, C.; Barucci, M. A.; Lazzarin, M. +5 more

The ESA Rosetta mission, launched in 2004 March, will flyby the second asteroid target (21) Lutetia in 2010 July. This asteroid is quite different from (2867) Steins, encountered by Rosetta in 2008 September. Lutetia is in fact a much larger asteroid, approximately 100km of diameter, as compared to the 5 km of Steins and also its surface compositi…

VLT/FLAMES-ARGUS observations of stellar wind-ISM cloud interactions in NGC 6357

Smith, L. J.; Gallagher, J. S., III; Westmoquette, M. S. +1 more

We present optical/near-IR integral field unit observations of a gas pillar in the Galactic HII region NGC 6357 containing the young open star cluster Pismis 24. These observations have allowed us to examine in detail the gas conditions of the strong wind-clump interactions taking place on its surface.

By accurately decomposing the Hα line pr…