Pushing the limits: K2 observations of the trans-Neptunian objects 2002 GV31 and (278361) 2007 JJ43

We present the first photometric observations of trans-Neptunian objects (TNOs) taken with the Kepler space telescope, obtained in the course of the K2 ecliptic survey. Two faint objects have been monitored in specifically designed pixel masks that were centered on the stationary points of the objects, when their daily motion was the slowest. In the design of the experiment, only the apparent path of these objects were retrieved from the detectors, i.e. the costs in terms of Kepler pixels were minimized. Because of the faintness of the targets we employ specific reduction techniques and co-added images. We measure rotational periods and amplitudes in the unfiltered Kepler band as follows: for (278361) 2007 JJ43 and 2002 GV31 we get P_rot=12.097 h and P_rot=29.2 h while 0.10 and 0.35 mag for the total amplitudes, respectively. Future space missions, like TESS and PLATO are not well suited to this kind of observations. Therefore, we encourage to include the brightest TNOs around their stationary points in each observing campaign to exploit this unique capability of the K2 Mission -- and therefore to provide unbiased rotational, shape and albedo characteristics of many objects.Comment: Accepted for publication in ApJ Letters, 5.2 pages in emulateapj style, misspelled 2007 JJ43 designation correcte

Módszertani térkép a kulturális és nyelvi diverzitás megértéséhez

A tanulmánykötetben összegyűjtött és bemutatott kutatások relevanciája abban áll, hogy egyrészt feltérképezi az osztálytermi megfigyeléses technikák terén az utóbbi évtizedekben végbement nagy léptékű metodológiai fejlődés eredményeit, másrészt módszertant kínál egy – nálunk is egyre jelentősebb – megoldásra váró társadalmi problémára: az etnikailag és nyelvileg heterogén osztályokban való integráció és hatékony pedagógia vizsgálatára

The Relation of Contemporary Labour Market Skills and the Future Engineers’ Visions

The study describes a segment of an international research which was aimed to find answers what the future generations‘ (Gen Z) vision is concerning their career and the correlation between these visions and the expectations of labour market nowadays. The preferred competencies of the labour market are constantly altering: a prognosis from 2018 says that the five most important skills will be analytical thinking, innovation, active learning, creativity, and critical thinking in 2022. Keywords: career, competences, engineering education, future priorities, generation Z, labour market, STEM, top skill

Main-Belt Asteroids in the K2 Engineering Field of View

Unlike NASA's original Kepler Discovery Mission, the renewed K2 Mission will stare at the plane of the Ecliptic, observing each field for approximately 75 days. This will bring new opportunities and challenges, in particular the presence of a large number of main-belt asteroids that will contaminate the photometry. The large pixel size makes K2 data susceptible to the effect of apparent minor planet encounters. Here we investigate the effects of asteroid encounters on photometric precision using a sub-sample of the K2 Engineering data taken in February, 2014. We show examples of asteroid contamination to facilitate their recognition and distinguish these events from other error sources. We conclude that main-belt asteroids will have considerable effects on K2 photometry of a large number of photometric targets during the Mission, that will have to be taken into account. These results will be readily applicable for future space photometric missions applying large-format CCDs, such as TESS and PLATO.Comment: accepted for publication in AJ, 6 page