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Arcminute Microkelvin Imager observations of unmatched Planck ERCSC LFI sources at 15.75 GHz
AMI Consortium; Olamaie, Malak; Rodríguez-Gonzálvez, Carmen +16 more
The Planck Early Release Compact Source Catalogue includes 26 sources with no obvious matches in other radio catalogues (of predominantly extragalactic sources). Here we present observations made with the Arcminute Microkelvin Imager Small Array (AMI SA) at 15.75 GHz of the eight unmatched sources at δ > +10°. Of the eight, four are detected an…
The first extrasolar planet detected via gravitational microlensing
Bond, Ian A.
In gravitational microlensing, distant planetary systems may be discovered by utilizing them as naturally occuring lenses. Efforts to find planets by this technique began in the 1990s. The first definitive detection of an extrasolar planet by microlensing was made in 2003 in the event OGLE 2003-BLG-235/MOA 2003-BLG-53, where the observed light cur…
First detailed analysis of multiple system V2083 Cyg
Zasche, P.; Svoboda, P.; Šlechta, M.
The main aim of this paper is the first detailed analysis of multiple system V2083 Cyg, to reveal its basic physical properties. The system was studied using the methods of light-curve and radial-velocity curve analysis, together with interferometric data from the visual pair obtained during the last century. It was found that the close subsystem …
The Akari Deep Field South: a New Home for Multiwavelength Extragalactic Astronomy
Clements, David L.
The importance of multiwavelength astronomical surveys is discussed in the context of galaxy evolution. The AKARI Deep Field South (ADF-S) is a new, well placed survey field that is already the subject of studies at a wide range of wavelengths. A number of ADF-S observational programmes are discussed and the prospects for the ADF-S as a future res…
Absolute properties of the neglected eclipsing B-type binary HD 194495
Çakırlı, Ömür; Dervişoğlu, Ahmet; Sipahi, Esin +1 more
We present the results of the high-resolution spectroscopic observations of the neglected binary system HD 194495 (B3 IV-V+B4 V). A combined analysis of three different photometric data set ( Tycho B T and V T photometry, H p-band data of Hipparcos and V-band data of ASAS3 photometry) and radial velocities indicate…
A Composite Light Curve Model of the Symbiotic Nova PU Vul (1979)
Mikołajewska, J.; Kato, M.; Hachisu, I.
PU Vul (1979) is a symbiotic nova that shows a long-lasting flat optical peak followed by a slow decline. We made a quasi-evolution model for outbursts on a 0.6 M⊙ white dwarf consisting of a series of static solutions with optically-thin winds. Our theoretical models reproduce well the observed visual/UV light curves as well as the new…
Constraints on the non-thermal emission from η Carinae's blast wave of 1843
Hinton, J. A.; Domainko, W.; Ohm, S. +3 more
Non-thermal hard X-ray and high-energy (HE; 1 MeV < E < 100 GeV) γ-ray emission in the direction of η Carinae has been recently detected using the INTEGRAL, AGILE and Fermi satellites. This emission has been interpreted either in the framework of particle acceleration in the colliding wind region between the two massive stars or in the very …
Amplitudes of thermal and kinetic Sunyaev-Zel'dovich signals from small-scale CMB anisotropies
Melchiorri, Alessandro; Cooray, Asantha; Pagano, Luca +4 more
While the arcminute-scale cosmic microwave background (CMB) anisotropies are due to secondary effects, point sources dominate the total anisotropy power spectrum. At high frequencies the point sources are primarily in the form of dusty, star-forming galaxies. Both Herschel and Planck have recently measured the anisotropy power spectrum of cosmic i…
Visible and thermal infrared observations of the Martian surface during three Phobos shadow transits
Christensen, Philip R.; Piqueux, Sylvain
We present visible and thermal infrared observations of the Martian surface acquired during three Phobos transits. Observations show a decrease of up to ∼20% of the reflected solar energy, consistent with the fraction of the Sun disk eclipsed by Phobos, and no measurable surface cooling. Thermal modeling indicates that the top millimeter of the re…
Multiple outflows from the luminous YSO IRAS 07422-2001
Varricatt, W. P.
The luminous young stellar object (YSO) IRAS 07422-2001 is studied in the infrared (IR). We discover star forming activity in embedded clusters located in a cloud detected at mid-IR wavelengths in emission. Multiple outflows are discovered from these clusters in the H2 ro-vibrational line at 2.122 µm. We detect at least six outflo…