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The Gaia spectrophotometric standard stars survey: II. Instrumental effects of six ground-based observing campaigns
Jordi, C.; Figueras, F.; Marinoni, S. +16 more
The Gaia SpectroPhotometric Standard Stars (SPSS) survey started in 2006, was awarded almost 450 observing nights and accumulated almost 100 000 raw data frames with both photometric and spectroscopic observations. Such large observational effort requires careful, homogeneous, and automatic data reduction and quality control procedures. In this pa…
Geometric characterization of the Arjuna orbital domain
de la Fuente Marcos, R.; de la Fuente Marcos, C.
Arjuna-type orbits are characterized by being Earth-like, having both low-eccentricity and low-inclination. Objects following these trajectories experience repeated trappings in the 1:1 commensurability with the Earth and can become temporary Trojans, horseshoe librators, quasi-satellites, and even transient natural satellites. Here, we review wha…
Intrinsic colour indices of Be stars obtained from 2MASS photometry
Wegner, W.
This paper is based on 2MASS photometry (JHK_s magnitudes) of 1172 Be stars. The observed mean intrinsic colours have been derived with aid of two-colour diagrams for Be stars of luminosity classes Ie-IIe, IIIe and IVe-Ve. The obtained results are the first determinations of their intrinsic colours in the astronomical literature. The smoothed infr…
CoRoT data reduction by example
Weingrill, J.
Data reduction techniques published so far for the CoRoT N2 data product were targeted primarily on the detection of extrasolar planets. Since the whole dataset has been released, specific algorithms are required to process the lightcurves from CoRoT correctly. Though only unflagged datapoints must be chosen for scientific processing, some flags m…
3XMM J185246.6+003317 as transient neutron star
Neuhäuser, R.; Hohle, M. M.; Hambaryan, V. +2 more
We performed an X-ray timing and spectral analysis of the variable source 3XMM J185246.6+003317 to investigate its physical nature. The data from all observations of 3XMM J185246.6+003317 conducted by XMM-Newton EPIC MOS1 and MOS2 with the same instrumental setup in 2004-2009 were reprocessed to form a homogenous data set of solar barycenter corre…
Gamma rays from a supernova of type Ia: SN2014J
Diehl, R.
SN2014J is the closest supernova of type Ia that occurred in the last 40 years. This provides an opportunity for unprecedented observational detail and coverage in many astronomical bands, which will help to better understand the still unknown astrophysics of these supernovae. For the first time, such an event occurs sufficiently nearby so that al…