Aims. We present a detailed analysis of OGLE 2004-BLG-482, a relatively high-magnification single-lens microlensing event that exhibits clear extended-source effects. These events are relatively ...rare, but they potentially contain unique information on the stellar atmosphere properties of their source star, as shown in this study. Methods. Our dense photometric coverage of the overall light curve and a proper microlensing modelling allow us to derive measurements of the OGLE 2004-BLG-482source star’s linear limb-darkening coefficients in three bands, including standard Johnson-Cousins I and R, as well as in a broad clear filter. In particular, we discuss in detail the problems of multi-band and multi-site modelling on the expected precision of our results. We also obtained high-resolution UVES spectra as part of a ToO programme at ESO VLT, from which we derive the source star’s precise fundamental parameters. Results. From the high-resolution UVES spectra, we find that OGLE 2004-BLG-482’s source star is a red giant of MK type a bit later than M3, with Teff = 3667 ± 150 K, log g = 2.1 ± 1.0 and an assumed solar metallicity. This is confirmed by an OGLE calibrated colour − magnitude diagram. We then obtain from a detailed microlensing modelling of the light curve linear limb-darkening coefficients that we compare to model-atmosphere predictions available in the literature, and find a very good agreement for the I and R bands. In addition, we perform a similar analysis using an alternative description of limb darkening based on a principal component analysis of ATLAS limb-darkening profiles, and also find a very good agreement between measurements and model predictions.
Aims. We analyze OGLE-2007-BLG-050, a high magnification microlensing event ($A\sim 432$) whose peak occurred on 2 May, 2007, with pronounced finite-source and parallax effects. We compute planet ...detection efficiencies for this event in order to determine its sensitivity to the presence of planets around the lens star. Methods. Both finite-source and parallax effects permit a measurement of the angular Einstein radius $\theta_{\rm E}=0.48\pm 0.01$ mas and the parallax $\pi_{\rm E}=0.12\pm 0.03$, leading to an estimate of the lens mass $M=0.50\pm0.14\,M_{\odot}$ and its distance to the observer $D_L=5.5\pm0.4$ kpc. This is only the second determination of a reasonably precise (<$30\%$) mass estimate for an isolated unseen object, using any method. This allows us to calculate the planetary detection efficiency in physical units $(r_\perp,m_{\rm p})$, where $r_\perp$ is the projected planet-star separation and mp is the planet mass. Results. When computing planet detection efficiency, we did not find any planetary signature, i.e. none of the planetary configurations provides a $\Delta\chi^2$ improvement higher than 60, and our detection efficiency results reveal significant sensitivity to Neptune-mass planets, and to a lesser extent Earth-mass planets in some configurations. Indeed, Jupiter and Neptune-mass planets are excluded with a high confidence for a large projected separation range between the planet and the lens star, respectively 0.6–10 and 1.4–4 AU, and Earth-mass planets are excluded with a 10% confidence in the lensing zone, i.e. 1.8–3.1 AU.
Deposition till namn: Vaxholms fästningsmuseum, Deposition till ort: null
Grupp H IV.
Grupp H IV.
Deposition to name: Vaxholm Fortress Museum, Deposition to Location: null
Group H IV.
Ingvar Nilsson, egentligen lots, splitsar en ögla på telnen. Nilsson kom från västra Blekinge från början, senare på Aspö.
Teln är ett annat ord för rep i garnets över- respektive underkant.
Ingvar ...Nilsson, really pilot, splits a loop on the telnen. Nilsson came from western Blekinge from the start, later on Aspö.
Teln is another word for rope in the upper and lower edge of the yarn.
Ingvar Nilsson, egentligen lots, splitsar en ögla på telnen. Nilsson kom från västra Blekinge från början, senare på Aspö.
Teln är ett annat ord för rep i garnets över- respektive underkant.
A reaction of the European Arctic landscape to a climate change on the scale of a typical middle-sized region is outlined. A wide scope of the methods was used, first of all field mapping and ...observations. Glaciers are important in the Sørkapp Land landscape because they cover the majority of its territory and undergo quick recessions as a result of the 20th century warming. Glacial recession influence intensively: relief with Quaternary deposits, waters, animals, vegetation and soils. The most important landscape changes in the 20th century are: uplift of the equilibrium line altitude on glaciers by 100–200 m; large glacial recession in both surface and volume; significant decrease of the land area due to recession of tidewater glaciers; lengthening of the coastline, and especially of glacial cliffs; development of the land water network; start of the plant succession in areas abandoned by glaciers. No isostatic uplift has taken place in Sørkapp Land since the Little Ice Age.
Ett stenlandskap på Flaggskär/Flakaskär i Karlskrona skärgård där vi ser kåsar vid Inra Kröl fotograferat från Öster. I bakgrunden till höger ses Flake Nacke.
(Kås: sydsvensk ord för båtplats, där ...båten ligger mellan två parallella rader stenar som byggs ut i vattnet.)
Ett stenlandskap på Flaggskär/Flakaskär i Karlskrona skärgård där vi ser kåsar vid Inra Kröl fotograferat från Öster. I bakgrunden till höger ses Flake Nacke.
(Kås: sydsvensk ord för båtplats, där båten ligger mellan två parallella rader stenar som byggs ut i vattnet.)
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