Search

Your search keyword '"Kulczak, P."' showing total 29 results
Start Over Author "Kulczak, P." Search Limiters Full Text
29 results on '"Kulczak, P."'

1. Scaling slowly rotating asteroids by stellar occultations

Author

Marciniak, A., Ďurech, J., Choukroun, A., Hanuš, J., Ogłoza, W., Szakáts, R., Molnár, L., Pál, A., Monteiro, F., Frappa, E., Beisker, W., Pavlov, H., Moore, J., Adomavičienė, R., Aikawa, R., Andersson, S., Antonini, P., Argentin, Y., Asai, A., Assoignon, P., Barton, J., Baruffetti, P., Bath, K. L., Behrend, R., Benedyktowicz, L., Bernasconi, L., Biguet, G., Billiani, M., Błażewicz, D., Boninsegna, R., Borkowski, M., Bosch, J., Brazill, S., Bronikowska, M., Bruno, A., Bąk, M. Butkiewicz, Caron, J., Casalnuovo, G., Castellani, J. J., Ceravolo, P., Conjat, M., Delincak, P., Delpau, J., Demeautis, C., Demirkol, A., Dróżdż, M., Duffard, R., Durandet, C., Eisfeldt, D., Evangelista, M., Fauvaud, S., Fauvaud, M., Ferrais, M., Filipek, M., Fini, P., Fukui, K., Gährken, B., Geier, S., George, T., Goffin, B., Golonka, J., Goto, T., Grice, J., Guhl, K., Halíř, K., Hanna, W., Harman, M., Hashimoto, A., Hasubick, W., Higgins, D., Higuchi, M., Hirose, T., Hirsch, R., Hofschulz, O., Horaguchi, T., Horbowicz, J., Ida, M., Ignácz, B., Ishida, M., Isobe, K., Jehin, E., Joachimczyk, B., Jones, A., Juan, J., Kamiński, K., Kamińska, M. K., Kankiewicz, P., Kasebe, H., Kattentidt, B., Kim, D. -H., Kim, M. -J., Kitazaki, K., Klotz, A., Komraus, M., Konstanciak, I., Tóth, R. Könyves, Kouno, K., Kowald, E., Krajewski, J., Krannich, G., Kreutzer, A., Kryszczyńska, A., Kubánek, J., Kudak, V., Kugel, F., Kukita, R., Kulczak, P., Lazzaro, D., Licandro, J., Livet, F., Maley, P., Manago, N., Mánek, J., Manna, A., Matsushita, H., Meister, S., Mesquita, W., Messner, S., Michelet, J., Michimani, J., Mieczkowska, I., Morales, N., Motyliński, M., Murawiecka, M., Newman, J., Nikitin, V., Nishimura, M., Oey, J., Oszkiewicz, D., Owada, M., Pakštienė, E., Pawłowski, M., Pereira, W., Perig, V., Perła, J., Pilcher, F., Podlewska-Gaca, E., Polák, J., Polakis, T., Polińska, M., Popowicz, A., Richard, F., Rives, J. J., Rodrigues, T., Rogiński, Ł., Rondón, E., Rottenborn, M., Schäfer, R., Schnabel, C., Schreurs, O., Selva, A., Simon, M., Skiff, B., Skrutskie, M., Skrzypek, J., Sobkowiak, K., Sonbas, E., Sposetti, S., Stuart, P., Szyszka, K., Terakubo, K., Thomas, W., Trela, P., Uchiyama, S., Urbanik, M., Vaudescal, G., Venable, R., Watanabe, Ha., Watanabe, Hi., Winiarski, M., Wróblewski, R., Yamamura, H., Yamashita, M., Yoshihara, H., Zawilski, M., Zelený, P., Żejmo, M., Żukowski, K., and Żywica, S.

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

As evidenced by recent survey results, majority of asteroids are slow rotators (P>12 h), but lack spin and shape models due to selection bias. This bias is skewing our overall understanding of the spins, shapes, and sizes of asteroids, as well as of their other properties. Also, diameter determinations for large (>60km) and medium-sized asteroids (between 30 and 60 km) often vary by over 30% for multiple reasons. Our long-term project is focused on a few tens of slow rotators with periods of up to 60 hours. We aim to obtain their full light curves and reconstruct their spins and shapes. We also precisely scale the models, typically with an accuracy of a few percent. We used wide sets of dense light curves for spin and shape reconstructions via light-curve inversion. Precisely scaling them with thermal data was not possible here because of poor infrared data: large bodies are too bright for WISE mission. Therefore, we recently launched a campaign among stellar occultation observers, to scale these models and to verify the shape solutions, often allowing us to break the mirror pole ambiguity. The presented scheme resulted in shape models for 16 slow rotators, most of them for the first time. Fitting them to stellar occultations resolved previous inconsistencies in size determinations. For around half of the targets, this fitting also allowed us to identify a clearly preferred pole solution, thus removing the ambiguity inherent to light-curve inversion. We also address the influence of the uncertainty of the shape models on the derived diameters. Overall, our project has already provided reliable models for around 50 slow rotators. Such well-determined and scaled asteroid shapes will, e.g. constitute a solid basis for density determinations when coupled with mass information. Spin and shape models continue to fill the gaps caused by various biases., Comment: Accepted to Astronomy & Astrophysics. 12 pages + appendices

Published
2023
Full Text
View/download PDF

3. Asteroid phase curves using sparse Gaia DR2 data and differential dense light curves

Author

Wilawer, E., Oszkiewicz, D., Kryszczyńska, A., Marciniak, A., Shevchenko, V., Belskaya, I., Kwiatkowski, T., Kankiewicz, P., Horbowicz, J., Kudak, V., Kulczak, P., Perig, V., and Sobkowiak, K.

Subjects
Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The amount of sparse asteroid photometry being gathered by both space- and ground-based surveys is growing exponentially. This large volume of data poses a computational challenge owing to both the large amount of information to be processed and the new methods needed to combine data from different sources (e.g. obtained by different techniques, in different bands, and having different random and systematic errors). The main goal of this work is to develop an algorithm capable of merging sparse and dense data sets, both relative and differential, in preparation for asteroid observations originating from, for example, Gaia, TESS, ATLAS, LSST, K2, VISTA, and many other sources. We present a novel method to obtain asteroid phase curves by combining sparse photometry and differential ground-based photometry. In the traditional approach, the latter cannot be used for phase curves. Merging those two data types allows for the extraction of phase-curve information for a growing number of objects. Our method is validated for 26 sample asteroids observed by the Gaia mission., Comment: 10 pages, 7 figures (supplementary material: 20 pages, 58 figures)

Published
2022
Full Text
View/download PDF

4. The effect of Immersive Virtual Reality on balance: an exploratory study on the feasibility of head-mounted displays for balance evaluation

Author

Oskar Rosiak, Nikodem Pietrzak, Anna Szczęsna, Izabela Kulczak, Grzegorz Zwoliński, Dorota Kamińska, Wiesław Konopka, and Magdalena Jozefowicz-Korczynska

Subjects
Medicine, Science
Abstract

Abstract Global interest in applying virtual reality (VR) in research and medicine has grown significantly, with potential benefits for patients suffering from balance disorders, instability, and a high risk of falling. This exploratory study assesses the impact of immersive VR (IVR) delivered through a head-mounted display (HMD) on balance and explores the feasibility of using the HMD VR unit as a standalone posturography tool. Using the Meta Quest 2 HMD and a mid-range Android smartphone equipped with standard sensors, the research employed a VR environment that simulated a ship at sea, with thirty-eight healthy participants with no otoneurologic abnormalities. Measurements were conducted in repeated trials, including static assessments on both stable ground and foam, as well as a 3-m walk. This was conducted in two settings: one within a VR environment with three different intensity levels and the other in non-VR settings. Statistical analysis and clinical evaluation revealed that IVR with HMD influences head-level sway velocity, which correlates with increased visual disturbance, suggesting its potential as a low-risk standalone posturography tool.

Published
2024
Full Text
View/download PDF

5. Properties of slowly rotating asteroids from the Convex Inversion Thermophysical Model

Author

Marciniak, A., Ďurech, J., Alí-Lagoa, V., Ogłoza, W., Szakáts, R., Müller, T. G., Molnár, L., Pál, A., Monteiro, F., Arcoverde, P., Behrend, R., Benkhaldoun, Z., Bernasconi, L., Bosch, J., Brincat, S., Brunetto, L., Bąk, M. Butkiewicz, Del Freo, F., Duffard, R., Evangelista-Santana, M., Farroni, G., Fauvaud, S., Fauvaud, M., Ferrais, M., Geier, S., Golonka, J., Grice, J., Hirsch, R., Horbowicz, J., Jehin, E., Julien, P., Kalup, Cs., Kamiński, K., Kamińska, M. K., Kankiewicz, P., Kecskeméthy, V., Kim, D. -H., Kim, M. -J., Konstanciak, I., Krajewski, J., Kudak, V., Kulczak, P., Kundera, T., Lazzaro, D., Manzini, F., Medeiros, H., Michimani-Garcia, J., Morales, N., Nadolny, J., Oszkiewicz, D., Pakštienė, E., Pawłowski, M., Perig, V., Pilcher, F., Pinel, P., Podlewska-Gaca, E., Polakis, T., Richard, F., Rodrigues, T., Rondon, E., Roy, R., Sanabria, J. J., Santana-Ros, T., Skiff, B., Skrzypek, J., Sobkowiak, K., Sonbas, E., Stachowski, G., Strajnic, J., Trela, P., Tychoniec, Ł., Urakawa, S., Verebelyi, E., Wagrez, K., Żejmo, M., and Żukowski, K.

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

Results from the TESS mission showed that previous studies strngly underestimated the number of slow rotators, revealing the importance of studying those asteroids. For most slowly rotating asteroids (P > 12), no spin and shape model is available because of observation selection effects. This hampers determination of their thermal parameters and accurate sizes. We continue our campaign in minimising selection effects among main belt asteroids. Our targets are slow rotators with low light-curve amplitudes. The goal is to provide their scaled spin and shape models together with thermal inertia, albedo, and surface roughness to complete the statistics. Rich multi-apparition datasets of dense light curves are supplemented with data from Kepler and TESS. In addition to data in the visible range, we also use thermal data from infrared space observatories (IRAS, Akari and WISE) in a combined optimisation process using the Convex Inversion Thermophysical Model (CITPM). This novel method has so far been applied to only a few targets, and in this work we further validate the method. We present the models of 16 slow rotators. All provide good fits to both thermal and visible data. The obtained sizes are on average accurate at the 5% precision, with diameters in the range from 25 to 145 km. The rotation periods of our targets range from 11 to 59 hours, and the thermal inertia covers a wide range of values, from 2 to <400 SI units, not showing any correlation with the period. With this work we increase the sample of slow rotators with reliable spin and shape models and known thermal inertia by 40%. The thermal inertia values of our sample do not display a previously suggested increasing trend with rotation period, which might be due to their small skin depth., Comment: Accepted to Astronomy & Astrophysics. 10 pages + appendices

Published
2021
Full Text
View/download PDF

6. Thermal properties of slowly rotating asteroids: Results from a targeted survey

Author

Marciniak, A., Alí-Lagoa, V., Müller, T. G., Szakáts, R., Molnár, L., Pál, A., Gaca, E. Podlewska, Parley, N., Antonini, P., Barbotin, E., Behrend, R., Bernasconi, L., Bąk, M. Butkiewicz, Crippa, R., Duffard, R., Ditteon, R., Feuerbach, M., Fauvaud, S., Garlitz, J., Geier, S., Goncalves, R., Grice, J., Grześkowiak, I., Hirsch, R., Horbowicz, J., Kamiński, K., Kamińska, M. K., Kim, D. -H., Kim, M. -J., Konstanciak, I., Kudak, V., Kulczak, P., Maestre, J. L., Manzini, F., Marks, S., Monteiro, F., Ogłoza, W., Oszkiewicz, D., Pilcher, F., Perig, V., Polakis, T., Polińska, M., Roy, R., Sanabria, J. J., Santana-Ros, T., Skiff, B., Skrzypek, J., Sobkowiak, K., Sonbas, E., Thizy, O., Trela, P., Urakawa, S., Żejmo, M., and Żukowski, K.

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

Context. Earlier work suggests that slowly rotating asteroids should have higher thermal inertias than faster rotators because the heat wave penetrates deeper into the sub-surface. However, thermal inertias have been determined mainly for fast rotators due to selection effects in the available photometry used to obtain shape models required for thermophysical modelling (TPM). Aims. Our aims are to mitigate these selection effects by producing shape models of slow rotators, to scale them and compute their thermal inertia with TPM, and to verify whether thermal inertia increases with the rotation period. Methods. To decrease the bias against slow rotators, we conducted a photometric observing campaign of main-belt asteroids with periods longer than 12 hours, from multiple stations worldwide, adding in some cases data from WISE and Kepler space telescopes. For spin and shape reconstruction we used the lightcurve inversion method, and to derive thermal inertias we applied a thermophysical model to fit available infrared data from IRAS, AKARI, and WISE. Results. We present new models of 11 slow rotators that provide a good fit to the thermal data. In two cases, the TPM analysis showed a clear preference for one of the two possible mirror solutions. We derived the diameters and albedos of our targets in addition to their thermal inertias, which ranged between 3$^{+33}_{-3}$ and 45$^{+60}_{-30}$ Jm$^{-2}$s$^{-1/2}$K$^{-1}$. Conclusions. Together with our previous work, we have analysed 16 slow rotators from our dense survey with sizes between 30 and 150 km. The current sample thermal inertias vary widely, which does not confirm the earlier suggestion that slower rotators have higher thermal inertias., Comment: Accepted for publication in Astronomy & Astrophysics

Published
2019
Full Text
View/download PDF

7. Analysis of Low Excitation HDO Transitions Toward the High-Mass Star-forming Regions G34.26+0.15, W51e$_{1}$/e$_{2}$, and W49N

Author

Kulczak-Jastrzȩbska, Magda

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We present observations of the ground state 1$_{0,1}$-0$_{0,0}$ rotational transition of HDO at 464.925 GHz and the 1$_{1,0}$-1$_{0,1}$ transition at 509.292 GHz toward the three high-mass star forming regions: G34.26+0.15, W49N, and W51e$_{1}$/e$_{2}$, carried out with the Caltech Submillimeter Observatory. The latter transition is observed for the first time from the ground. The spectra are modeled, together with observations of higher-energy HDO transitions, as well as submillimeter dust continuum fluxes from the literature, using a spherically symmetric radiative transfer model to derive the radial distribution of the HDO abundance in the target sources. The abundance profile is divided into an inner hot core region, with kinetic temperatures higher than 100~K, and a cold outer envelope with lower kinetic temperatures. The derived HDO abundance with respect to H$_2$ is (0.3-3.7)$\times 10^{-8}$ in the hot inner region ($T > 100 \mathrm{K}$) and (7.0-10.0)$\times 10^{-11}$ in the cold outer envelope. We also used two H$_{2}^{18}$O fundamental transitions to constrain the H$_{2}$O abundances in the outer envelopes. The HDO/H$_{2}$O ratios in these cold regions are found to be (1.8-3.1)$\times 10^{-3}$ and are consequently higher than in the hot inner regions of these sources.

Published
2017
Full Text
View/download PDF

8. Communities of Uropodina (Acari: Mesostigmata) in Nest Boxes Inhabited by Dormice (Glis glis and Muscardinus avellanarius) and Differences in Percentages of Nidicoles in Nests of Various Hosts

Author

Jerzy Błoszyk, Grzegorz Hebda, Marta Kulczak, Michał Zacharyasiewicz, Tomasz Rutkowski, and Agnieszka Napierała

Subjects
Apionoseius infirmus, bird nests, dormice, Leiodinychus orbicularis, mammal nests, merocenose, Veterinary medicine, SF600-1100, Zoology, QL1-991
Abstract

Bird and mammal nests and nest boxes constitute microenvironments in which various groups of invertebrates can live, including mites from the suborder Uropodina (Acari: Mesostigmata). The main aim of the current study was to ascertain the characteristics of mite communities from the suborder Uropodina, which inhabit the nests of dormice (Gliridae) built in nest boxes. The second aim of the study was to compare the habitat preferences of Leiodinychus orbicularis (C. L. Koch) and Apionoseius infirmus (Berlese), i.e., two typically nest-dwelling species of Uropodina. The material for the study was collected from nest boxes in six forest complexes in southwestern Poland. The conducted research revealed the presence of five species of Uropodina, with a total number of 559 specimens, in the examined boxes. Leiodinychus orbicularis was found in almost half of all of the examined boxes and was a superdominant species in the communities. The analysis of the habitat preferences of the two nest species of Uropodina showed that A. infirmus preferred old natural nests, in which the communities were formed from a larger number of species, without a significant statistical prevalence of one species. On the other hand, L. orbicularis occurred sporadically in open bird nests, but was very numerous and frequent in nest boxes. The significant dominance of L. orbicularis in nest boxes can probably be explained by the specific conditions prevailing in this type of microhabitat, including the very low humidity and food resources that this mite species prefers compared to other species of Uropodina.

Published
2023
Full Text
View/download PDF

9. Geographical Differentiation of Mites from the Suborder Uropodina (Acari: Mesostigmata) in Dead Wood in Europe in the Light of Recent Research

Author

Jerzy Błoszyk, Agnieszka Napierała, Marta Kulczak, and Michał Zacharyasiewicz

Subjects
biodiversity, biogeography, merocenoses, Parasitiformes, unstable microhabitat, range of occurrence, Biology (General), QH301-705.5
Abstract

Dead wood is an important microhabitat for Uropodina mites (Acari: Mesostigmata). Earlier research has shown that dead wood contains about 1/3 of the Uropodina found so far in Poland, and its presence increases the overall biodiversity of forest ecosystems by 40%. The major aim of the current study is to assess the geographical variation of species diversity of Uropodina inhabiting dead wood in Poland and other European countries. The samples from dead wood (1180 samples in total) were collected in seven provinces in Poland, and in eight other countries (France, Italy, Belgium, The Netherlands, Slovakia, Sweden, Norway, and Denmark). Fifty-two Uropodina species were recovered from dead wood in seven provinces in Poland. The highest number of species was recorded in dead wood samples collected in Wielkopolskie, and the lowest in those from Zachodniopomorskie. The total number of species in the examined dead wood in the surveyed European countries was 24 species, ranging from 4 to 13 species per country. The most common species in the examined material from both Poland and other studied European countries were Oodinychus ovalis (C.L. Koch, 1839) and Pulchellaobovella pulchella (Berlese, 1904), though the frequency of the other species found in those areas was low. The differences in species diversity of the examined fauna of Uropodina probably result in the difference in the extent of the research carried out so far in some regions of Poland, lack of sufficient data for other European countries, as well as the highly diversified geographical ranges of most Uropodina species. The obtained results clearly show that there is still a need for further, more extensive research, based on a larger number of samples from dead wood from the whole continent.

Published
2023
Full Text
View/download PDF

10. The Pleistocene Glaciations as One of the Major Factors Having Impact on the Current Range of Occurrence and Species Diversity of Mites from the Suborder Uropodina (Acari: Mesostigmata) in Poland

Author

Jerzy Błoszyk, Marta Kulczak, and Agnieszka Napierała

Subjects
biodiversity, geographical parthenogenesis, glaciations, range of occurrence, refuge, zoogeography, Biology (General), QH301-705.5
Abstract

On the basis of data collected since 1961, the authors of the current article conducted an analysis of the distribution of Uropodina (Acari: Mesostigmata) species in Poland. The areas of occurrence of the species were compared with the range boundaries of the successive Pleistocene glaciations in Poland. The second aim of the study was to establish the importance of the former nunataks (paleonunataks) for the preservation of biodiversity of this group of mites in Poland. The study has revealed that there are six types of distribution of Uropodina species in the area of Poland: (i) species distributed consistently in the whole area of the country, (ii) species having their northern range of occurrence in Poland, (iii) species having their north-western range of occurrence, (iv) species having their north-eastern range of occurrence, (v) species of boreal-mountainous distribution with evident disjunction in central Poland, and (vi) Carpathian species migrating northwards along the Vistula River. The analyses of the species composition of Uropodina communities on nunataks shows that the concave nunatak in Jura Krakowsko-Czestochowska, described in the literature as the “Jurassic Inland Oasis”, turned out to be the location with the highest Uropodina diversity, whereas on the nunatak of the Ślęża Massif, which was covered by two glaciations, the Uropodina diversity was the lowest.

Published
2023
Full Text
View/download PDF

11. Scaling slowly rotating asteroids with stellar occultations

Author

Marciniak, A., primary, Ďurech, J., additional, Choukroun, A., additional, Hanuš, J., additional, Ogłoza, W., additional, Szakáts, R., additional, Molnár, L., additional, Pál, A., additional, Monteiro, F., additional, Frappa, E., additional, Beisker, W., additional, Pavlov, H., additional, Moore, J., additional, Adomavičienė, R., additional, Aikawa, R., additional, Andersson, S., additional, Antonini, P., additional, Argentin, Y., additional, Asai, A., additional, Assoignon, P., additional, Barton, J., additional, Baruffetti, P., additional, Bath, K. L., additional, Behrend, R., additional, Benedyktowicz, L., additional, Bernasconi, L., additional, Biguet, G., additional, Billiani, M., additional, Błażewicz, D., additional, Boninsegna, R., additional, Borkowski, M., additional, Bosch, J., additional, Brazill, S., additional, Bronikowska, M., additional, Bruno, A., additional, Butkiewicz-Bąk, M., additional, Caron, J., additional, Casalnuovo, G., additional, Castellani, J. J., additional, Ceravolo, P., additional, Conjat, M., additional, Delincak, P., additional, Delpau, J., additional, Demeautis, C., additional, Demirkol, A., additional, Dróżdż, M., additional, Duffard, R., additional, Durandet, C., additional, Eisfeldt, D., additional, Evangelista, M., additional, Fauvaud, S., additional, Fauvaud, M., additional, Ferrais, M., additional, Filipek, M., additional, Fini, P., additional, Fukui, K., additional, Gährken, B., additional, Geier, S., additional, George, T., additional, Goffin, B., additional, Golonka, J., additional, Goto, T., additional, Grice, J., additional, Guhl, K., additional, Halíř, K., additional, Hanna, W., additional, Harman, M., additional, Hashimoto, A., additional, Hasubick, W., additional, Higgins, D., additional, Higuchi, M., additional, Hirose, T., additional, Hirsch, R., additional, Hofschulz, O., additional, Horaguchi, T., additional, Horbowicz, J., additional, Ida, M., additional, Ignácz, B., additional, Ishida, M., additional, Isobe, K., additional, Jehin, E., additional, Joachimczyk, B., additional, Jones, A., additional, Juan, J., additional, Kamiński, K., additional, Kamińska, M. K., additional, Kankiewicz, P., additional, Kasebe, H., additional, Kattentidt, B., additional, Kim, D.-H., additional, Kim, M.-J., additional, Kitazaki, K., additional, Klotz, A., additional, Komraus, M., additional, Konstanciak, I., additional, Könyves-Tóth, R., additional, Kouno, K., additional, Kowald, E., additional, Krajewski, J., additional, Krannich, G., additional, Kreutzer, A., additional, Kryszczyńska, A., additional, Kubánek, J., additional, Kudak, V., additional, Kugel, F., additional, Kukita, R., additional, Kulczak, P., additional, Lazzaro, D., additional, Licandro, J., additional, Livet, F., additional, Maley, P., additional, Manago, N., additional, Mánek, J., additional, Manna, A., additional, Matsushita, H., additional, Meister, S., additional, Mesquita, W., additional, Messner, S., additional, Michelet, J., additional, Michimani, J., additional, Mieczkowska, I., additional, Morales, N., additional, Motyliński, M., additional, Murawiecka, M., additional, Newman, J., additional, Nikitin, V., additional, Nishimura, M., additional, Oey, J., additional, Oszkiewicz, D., additional, Owada, M., additional, Pakštienė, E., additional, Pawłowski, M., additional, Pereira, W., additional, Perig, V., additional, Perła, J., additional, Pilcher, F., additional, Podlewska-Gaca, E., additional, Polák, J., additional, Polakis, T., additional, Polińska, M., additional, Popowicz, A., additional, Richard, F., additional, Rives, J. J, additional, Rodrigues, T., additional, Rogiński, Ł., additional, Rondón, E., additional, Rottenborn, M., additional, Schäfer, R., additional, Schnabel, C., additional, Schreurs, O., additional, Selva, A., additional, Simon, M., additional, Skiff, B., additional, Skrutskie, M., additional, Skrzypek, J., additional, Sobkowiak, K., additional, Sonbas, E., additional, Sposetti, S., additional, Stuart, P., additional, Szyszka, K., additional, Terakubo, K., additional, Thomas, W., additional, Trela, P., additional, Uchiyama, S., additional, Urbanik, M., additional, Vaudescal, G., additional, Venable, R., additional, Watanabe, Ha., additional, Watanabe, Hi., additional, Winiarski, M., additional, Wróblewski, R., additional, Yamamura, H., additional, Yamashita, M., additional, Yoshihara, H., additional, Zawilski, M., additional, Zelený, P., additional, Żejmo, M., additional, Żukowski, K., additional, and Żywica, S., additional

Published
2023
Full Text
View/download PDF

12. Changes in Forest Stand and Stability of Uropodine Mites Communities (Acari: Parasitiformes) in Jakubowo Nature Reserve in the Light of Long-Term Research

Author

Jerzy Błoszyk, Agnieszka Napierała, Marta Kulczak, and Michał Zacharyasiewicz

Subjects
anthropogenic disturbances, environmental monitoring, forest reserve, long-term research, natural succession, oak-hornbeam forests, Plant ecology, QK900-989
Abstract

The current study has been conducted for over 40 years (between 1981 and 2022) in a natural forest reserve in Jakubowo (western Poland). The material for the analysis was collected in three permanent monitoring ground plots with different vegetation cover, humidity and degree of shade. The major aim of the study was to analyze the changes in the species composition and abundance in uropodine (Acari: Parasitiformes) mite communities that occurred in the three ground plots in Jakubowo over 40 years. The second goal was to assess the stability of the species composition and the number of Uropodina mites in the examined communities. The most important phenomenon observed during the research period was a considerable decrease in the abundance of Uropodina in ground litter and soil, and the second was the loss of stenotopic and rare species. Similar observations are also presented in previous studies, which embraced 36 years of research period (between 1978 and 2013). Now, this unfavorable trend, which is caused by anthropogenic disturbances in the environment, has become permanent.

Published
2022
Full Text
View/download PDF

13. The Array of Antibacterial Action of Protocatechuic Acid Ethyl Ester and Erythromycin on Staphylococcal Strains

Author

Maria Miklasińska-Majdanik, Małgorzata Kępa, Monika Kulczak, Maciej Ochwat, and Tomasz J. Wąsik

Subjects
protocatechuic acid ethyl ester, erythromycin, fractional inhibitory concentration, Staphylococcus spp., Therapeutics. Pharmacology, RM1-950
Abstract

The spread of antibiotic resistance among bacteria has become one of the major health problems worldwide. Methicillin-resistant staphylococcal strains are especially dangerous because they are often resistant to other antibiotics. The increasing insensitivity to macrolides, lincosamides and streptogramin B antibiotics of methicillin-resistant staphylococcal isolates has limited the use of these drugs in therapy. The combination of natural compounds and antibiotics can be considered as an alternative tool to fight multi-drug-resistant pathogen infections. The aim of the presented study was to examine the antibacterial activity of protocatechuic acid ethyl ester–erythromycin combination towards Staphylococcus aureus and Staphylococcus epidermidis strains with various resistance profiles to methicillin and macrolides, lincosamides and streptogramin B (MLSB) antibiotics. The in-vitro antibacterial potential of the above combination was investigated by minimum inhibitory concentration assays and checkerboard testing. The observed effects were strain dependent, with 8 of 12 tested staphylococcal strains showing an indifferent effect on the natural compound and erythromycin; for 2 strains, the tested combination had an additive effect, while for another 2, the effect was synergistic. Interestingly, the multi-drug-resistant strains were more sensitive to the cooperative action of the protocatechuic acid ethyl ester and the antibiotic.

Published
2022
Full Text
View/download PDF

14. Effect of Near-Infrared Blood Photobiomodulation on Red Blood Cell Damage from the Extracorporeal Circuit during Hemodialysis In Vitro

Author

Tomasz Walski, Karolina Grzeszczuk-Kuć, Weronika Berlik, Izabela Synal-Kulczak, Raghvendra Bohara, Jerzy Detyna, and Małgorzata Komorowska

Subjects
photobiomodulation, hemodialysis, blood, red blood cells, oxidative stress, low-level light therapy (LLLT), Applied optics. Photonics, TA1501-1820
Abstract

The contact of blood with the bioincompatible membranes of the dialyzer, which is part of the extracorporeal circuit during hemodialysis (HD), causes upregulation of various cellular and non-cellular processes, including massive generation and release of reactive oxygen species (ROS), (which is one of the primary causes of anemia in chronic renal failure). We hypothesize that near-infrared (NIR) radiation possesses antioxidant properties and is considered to protect the red blood cell (RBC) membrane by enhancing its resilience to negative pressures. Our experimental setup consisted of an HD machine equipped with a dialyzer with a polyamide membrane; whole bovine blood was examined in vitro in blood-treated circulation. Blood samples were taken at 0, 5, 15, and 30 min during the HD therapy. We also assessed osmotic fragility, hematocrit, hemolysis, and oxidative stress as a concentration of reactive thiobarbituric acid substances (TBARS). Our results have shown that RBC membrane peroxidation increased significantly after 30 min of circulation, whereas the TBARS level in NIR-treated blood remained relatively steady throughout the experiment. The osmotic fragility of NIR-irradiated samples during dialysis was decreased compared to control samples. Our studies confirm that in vitro, blood photobiomodulation using NIR light diminishes oxidative damage during HD and can be considered a simultaneous pretreatment strategy for HD.

Published
2022
Full Text
View/download PDF

15. OUP accepted manuscript

Author

Wilawer, E, primary, Oszkiewicz, D, additional, Kryszczyńska, A, additional, Marciniak, A, additional, Shevchenko, V, additional, Belskaya, I, additional, Kwiatkowski, T, additional, Kankiewicz, P, additional, Horbowicz, J, additional, Kudak, V, additional, Kulczak, P, additional, Perig, V, additional, and Sobkowiak, K, additional

Published
2022
Full Text
View/download PDF

16. Properties of slowly rotating asteroids from the Convex Inversion Thermophysical Model

Author

Marciniak, A., primary, Ďurech, J., additional, Alí-Lagoa, V., additional, Ogłoza, W., additional, Szakáts, R., additional, Müller, T. G., additional, Molnár, L., additional, Pál, A., additional, Monteiro, F., additional, Arcoverde, P., additional, Behrend, R., additional, Benkhaldoun, Z., additional, Bernasconi, L., additional, Bosch, J., additional, Brincat, S., additional, Brunetto, L., additional, Butkiewicz - Bąk, M., additional, Del Freo, F., additional, Duffard, R., additional, Evangelista-Santana, M., additional, Farroni, G., additional, Fauvaud, S., additional, Fauvaud, M., additional, Ferrais, M., additional, Geier, S., additional, Golonka, J., additional, Grice, J., additional, Hirsch, R., additional, Horbowicz, J., additional, Jehin, E., additional, Julien, P., additional, Kalup, Cs., additional, Kamiński, K., additional, Kamińska, M. K., additional, Kankiewicz, P., additional, Kecskeméthy, V., additional, Kim, D.-H., additional, Kim, M.-J., additional, Konstanciak, I., additional, Krajewski, J., additional, Kudak, V., additional, Kulczak, P., additional, Kundera, T., additional, Lazzaro, D., additional, Manzini, F., additional, Medeiros, H., additional, Michimani-Garcia, J., additional, Morales, N., additional, Nadolny, J., additional, Oszkiewicz, D., additional, Pakštienė, E., additional, Pawłowski, M., additional, Perig, V., additional, Pilcher, F., additional, Pinel, P., additional, Podlewska-Gaca, E., additional, Polakis, T., additional, Richard, F., additional, Rodrigues, T., additional, Rondón, E., additional, Roy, R., additional, Sanabria, J. J., additional, Santana-Ros, T., additional, Skiff, B., additional, Skrzypek, J., additional, Sobkowiak, K., additional, Sonbas, E., additional, Stachowski, G., additional, Strajnic, J., additional, Trela, P., additional, Tychoniec, Ł., additional, Urakawa, S., additional, Verebelyi, E., additional, Wagrez, K., additional, Żejmo, M., additional, and Żukowski, K., additional

Published
2021
Full Text
View/download PDF

17. Properties of slowly rotating asteroids from the Convex Inversion Thermophysical Model

Author

Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal, Marciniak, Anna, Ďurech, Josef, Alí-Lagoa, Víctor, Ogłoza, W., Szakáts, Róbert, Müller, Thomas G., Molnár, László, Pál, András, Monteiro, F., Arcoverde, P., Behrend, Raoul, Benkhaldoun, Zouhair, Bernasconi, Laurent, Bosch, J., Brincat, S., Brunetto, L., Butkiewicz-Bąk, Magdalena, Del Freo, F., Duffard, René, Evangelista-Santana, M., Farroni, G., Fauvaud, S., Fauvaud, M., Ferrais, Marin, Geier, Stefan, Golonka, J., Grice, Jonny, Hirsch, R., Horbowicz, J., Jehin, Emmanuel, Julien, P., Kalup, Cs., Kamiński, K., Kamińska, M.K., Kankiewicz, P., Kecskeméthy, V., Kim, D.-H., Kim, Myung-Jin, Konstanciak, I., Krajewski, J., Kudak, V., Kulczak, P., Kundera, T., Lazzaro, D., Manzini, F., Medeiros, H., Michimani-Garcia, J., Morales, Nicolás, Nadolny, J., Oszkiewicz, D., Pakštienė, E., Pawłowski, M., Perig, V., Pilcher, F., Pinel, P., Podlewska-Gaca, Edyta, Polakis, T., Richard, F., Rodrigues, T., Rondón, E., Roy, René, Sanabria, J.J., Santana-Ros, Toni, Skiff, B., Skrzypek, J., Sobkowiak, Krzysztof, Sonbas, E., Stachowski, G., Strajnic, J., Trela, P., Tychoniec, Ł., Urakawa, S., Verebelyi, E., Wagrez, K., Żejmo, M., Żukowski, K., Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal, Marciniak, Anna, Ďurech, Josef, Alí-Lagoa, Víctor, Ogłoza, W., Szakáts, Róbert, Müller, Thomas G., Molnár, László, Pál, András, Monteiro, F., Arcoverde, P., Behrend, Raoul, Benkhaldoun, Zouhair, Bernasconi, Laurent, Bosch, J., Brincat, S., Brunetto, L., Butkiewicz-Bąk, Magdalena, Del Freo, F., Duffard, René, Evangelista-Santana, M., Farroni, G., Fauvaud, S., Fauvaud, M., Ferrais, Marin, Geier, Stefan, Golonka, J., Grice, Jonny, Hirsch, R., Horbowicz, J., Jehin, Emmanuel, Julien, P., Kalup, Cs., Kamiński, K., Kamińska, M.K., Kankiewicz, P., Kecskeméthy, V., Kim, D.-H., Kim, Myung-Jin, Konstanciak, I., Krajewski, J., Kudak, V., Kulczak, P., Kundera, T., Lazzaro, D., Manzini, F., Medeiros, H., Michimani-Garcia, J., Morales, Nicolás, Nadolny, J., Oszkiewicz, D., Pakštienė, E., Pawłowski, M., Perig, V., Pilcher, F., Pinel, P., Podlewska-Gaca, Edyta, Polakis, T., Richard, F., Rodrigues, T., Rondón, E., Roy, René, Sanabria, J.J., Santana-Ros, Toni, Skiff, B., Skrzypek, J., Sobkowiak, Krzysztof, Sonbas, E., Stachowski, G., Strajnic, J., Trela, P., Tychoniec, Ł., Urakawa, S., Verebelyi, E., Wagrez, K., Żejmo, M., and Żukowski, K.

Abstract

Context. Recent results for asteroid rotation periods from the TESS mission showed how strongly previous studies have underestimated the number of slow rotators, revealing the importance of studying those targets. For most slowly rotating asteroids (those with P > 12 h), no spin and shape model is available because of observation selection effects. This hampers determination of their thermal parameters and accurate sizes. Also, it is still unclear whether signatures of different surface material properties can be seen in thermal inertia determined from mid-infrared thermal flux fitting. Aims. We continue our campaign in minimising selection effects among main belt asteroids. Our targets are slow rotators with low light-curve amplitudes. Our goal is to provide their scaled spin and shape models together with thermal inertia, albedo, and surface roughness to complete the statistics. Methods. Rich multi-apparition datasets of dense light curves are supplemented with data from Kepler and TESS spacecrafts. In addition to data in the visible range, we also use thermal data from infrared space observatories (mainly IRAS, Akari and WISE) in a combined optimisation process using the Convex Inversion Thermophysical Model. This novel method has so far been applied to only a few targets, and therefore in this work we further validate the method itself. Results. We present the models of 16 slow rotators, including two updated models. All provide good fits to both thermal and visible data.The obtained sizes are on average accurate at the 5% precision level, with diameters found to be in the range from 25 to 145 km. The rotation periods of our targets range from 11 to 59 h, and the thermal inertia covers a wide range of values, from 2 to <400 J m−2 s−1∕2 K−1, not showing any correlation with the period. Conclusions. With this work we increase the sample of slow rotators with reliable spin and shape models and known thermal inertia by 40%. The thermal inertia values of our sample d

Published
2021

18. Asteroid phase curves using sparse Gaia DR2 data and differential dense light curves.

Author

Wilawer, E, Oszkiewicz, D, Kryszczyńska, A, Marciniak, A, Shevchenko, V, Belskaya, I, Kwiatkowski, T, Kankiewicz, P, Horbowicz, J, Kudak, V, Kulczak, P, Perig, V, and Sobkowiak, K

Subjects
LIGHT curves, ASTEROID detection, ASTEROIDS, SMALL solar system bodies, DATA mining, PHOTOMETRY
Abstract

The amount of sparse asteroid photometry being gathered by both space- and ground-based surveys is growing exponentially. This large volume of data poses a computational challenge owing to both the large amount of information to be processed and the new methods needed to combine data from different sources (e.g. obtained by different techniques, in different bands, and having different random and systematic errors). The main goal of this work is to develop an algorithm capable of merging sparse and dense data sets, both relative and differential, in preparation for asteroid observations originating from, for example, Gaia ,  TESS , ATLAS, LSST, K2 , VISTA, and many other sources. We present a novel method to obtain asteroid phase curves by combining sparse photometry and differential ground-based photometry. In the traditional approach, the latter cannot be used for phase curves. Merging those two data types allows for the extraction of phase-curve information for a growing number of objects. Our method is validated for 26 sample asteroids observed by the Gaia mission. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

19. Stratification of Archaea in the deep sediments of a freshwater meromictic lake: vertical shift from methanogenic to uncultured archaeal lineages.

Author

Guillaume Borrel, Anne-Catherine Lehours, Olivier Crouzet, Didier Jézéquel, Karl Rockne, Amélie Kulczak, Emilie Duffaud, Keith Joblin, and Gérard Fonty

Subjects
Medicine, Science
Abstract

As for lineages of known methanogens, several lineages of uncultured archaea were recurrently retrieved in freshwater sediments. However, knowledge is missing about how these lineages might be affected and structured according to depth. In the present study, the vertical changes of archaeal communities were characterized in the deep sediment of the freshwater meromictic Lake Pavin. For that purpose, an integrated molecular approach was performed to gain information on the structure, composition, abundance and vertical stratification of archaeal communities thriving in anoxic freshwater sediments along a gradient of sediments encompassing 130 years of sedimentation. Huge changes occurred in the structure and composition of archaeal assemblages along the sediment core. Methanogenic taxa (i.e. Methanosaeta and Methanomicrobiales) were progressively replaced by uncultured archaeal lineages (i.e. Marine Benthic Group-D (MBG-D) and Miscellaneous Crenarchaeal Group (MCG)) which are suspected to be involved in the methane cycle.

Published
2012
Full Text
View/download PDF

20. Public History: An ERIC/ChESS Sample.

Author

Kulczak, Carrie

Abstract

Provides citations with abstracts from the ERIC database focusing on public history. Includes background information and teaching materials on such topics as museum resources in K-12 social studies, using historic sites to study western women's history, and teaching about the Oregon Trail. (CMK)

Published
2002

21. The Great Depression: An ERIC/ChESS Sample.

Author

Kulczak, Carrie

Abstract

Provides citations with abstracts from the ERIC database focusing on the Great Depression. Includes both background information and teaching materials on such topics as an overview of the New Deal, the arts and the Great Depression, and information on the Civilian Conservation Corps. Offers directions for accessing the materials. (CMK)

Published
2001

22. Desegregation: An ERIC/ChESS Sample.

Author

Kulczak, Carrie

Abstract

Provides a list from the ERIC database of teaching materials and background information on desegregation. Topics include American Indian boarding schools, Brown v. Board of Education, and segregation in relation to Asian and Hispanic students. Offers directions for obtaining the full text of these materials. (CMK)

Published
2001

23. The First Ladies: An ERIC/ChESS Sample.

Author

Kulczak, Carrie

Abstract

Provides a list from the ERIC database of teaching materials and background information on the First Ladies. Topics include Lou Hoover and the Girl Scouts, Bess Truman and the press, and Eleanor Roosevelt and her press conferences. Offers directions for obtaining the full text of these materials. (CMK)

Published
2001

24. Thermal properties of slowly rotating asteroids: results from a targeted survey

Author

National Science Centre (Poland), European Commission, Ministry of Education (Slovak Republic), Ministerio de Ciencia, Innovación y Universidades (España), Hungarian Academy of Sciences, Marciniak, A., Ali-Lagoa, Victor, Mueller, T.G., Szakáts, R., Molnár, L., Pal, A., Podlewska-Gaca, E., Parley, N., Antonini, P., Barbotin, E., Behrend, R., Bernasconi, L., Butkiewicz-Bąk, M., Crippa, R., Duffard, René D., Ditteon, R, Feuerbach, M, Fauvaud, S, Garlitz, J, Geier, S., Goncalves, R, Grice, J., Grzeskowiak, I, Hirsch, R., Horbowicz, J, Kaminski, K., Kamińska, M. K., Kim, D. H., Kim, M. J., Konstanciak, I., Kudak, V., Kulczak, P, Maestre, J.L., Manzini, F., Marks, S, Monteiro, F, Ogloza, W, Oszkiewicz, D., Pilcher, F, Perig, V, Polakis, T, Polinska, M, Roy, R., Sanabria, JJ, Santana-Ros, T, Skiff, B, Skrzypek, J, Sobkowiak, K, Sonbas, E, Thizy, O, Trela, P, Urakawa, S, Zejmo, M, Zukowski, K, National Science Centre (Poland), European Commission, Ministry of Education (Slovak Republic), Ministerio de Ciencia, Innovación y Universidades (España), Hungarian Academy of Sciences, Marciniak, A., Ali-Lagoa, Victor, Mueller, T.G., Szakáts, R., Molnár, L., Pal, A., Podlewska-Gaca, E., Parley, N., Antonini, P., Barbotin, E., Behrend, R., Bernasconi, L., Butkiewicz-Bąk, M., Crippa, R., Duffard, René D., Ditteon, R, Feuerbach, M, Fauvaud, S, Garlitz, J, Geier, S., Goncalves, R, Grice, J., Grzeskowiak, I, Hirsch, R., Horbowicz, J, Kaminski, K., Kamińska, M. K., Kim, D. H., Kim, M. J., Konstanciak, I., Kudak, V., Kulczak, P, Maestre, J.L., Manzini, F., Marks, S, Monteiro, F, Ogloza, W, Oszkiewicz, D., Pilcher, F, Perig, V, Polakis, T, Polinska, M, Roy, R., Sanabria, JJ, Santana-Ros, T, Skiff, B, Skrzypek, J, Sobkowiak, K, Sonbas, E, Thizy, O, Trela, P, Urakawa, S, Zejmo, M, and Zukowski, K

Abstract

Context. Earlier work suggests that slowly rotating asteroids should have higher thermal inertias than faster rotators because the heat wave penetrates deeper into the subsurface. However, thermal inertias have been determined mainly for fast rotators due to selection effects in the available photometry used to obtain shape models required for thermophysical modelling (TPM). Aims. Our aims are to mitigate these selection effects by producing shape models of slow rotators, to scale them and compute their thermal inertia with TPM, and to verify whether thermal inertia increases with the rotation period. Methods. To decrease the bias against slow rotators, we conducted a photometric observing campaign of main-belt asteroids with periods longer than 12 h, from multiple stations worldwide, adding in some cases data from WISE and Kepler space telescopes. For spin and shape reconstruction we used the lightcurve inversion method, and to derive thermal inertias we applied a thermophysical model to fit available infrared data from IRAS, AKARI, and WISE. Results. We present new models of 11 slow rotators that provide a good fit to the thermal data. In two cases, the TPM analysis showed a clear preference for one of the two possible mirror solutions. We derived the diameters and albedos of our targets in addition to their thermal inertias, which ranged between 3(-3)(+33) and 45(-30)(+60) Jm(-2) s(-1/2) K-1. Conclusions. Together with our previous work, we have analysed 16 slow rotators from our dense survey with sizes between 30 and 150 km. The current sample thermal inertias vary widely, which does not confirm the earlier suggestion that slower rotators have higher thermal inertias.© ESO 2019

Published
2019

25. Thermal properties of slowly rotating asteroids: results from a targeted survey

Author

Marciniak, A., primary, Alí-Lagoa, V., additional, Müller, T. G., additional, Szakáts, R., additional, Molnár, L., additional, Pál, A., additional, Podlewska-Gaca, E., additional, Parley, N., additional, Antonini, P., additional, Barbotin, E., additional, Behrend, R., additional, Bernasconi, L., additional, Butkiewicz-Bąk, M., additional, Crippa, R., additional, Duffard, R., additional, Ditteon, R., additional, Feuerbach, M., additional, Fauvaud, S., additional, Garlitz, J., additional, Geier, S., additional, Goncalves, R., additional, Grice, J., additional, Grześkowiak, I., additional, Hirsch, R., additional, Horbowicz, J., additional, Kamiński, K., additional, Kamińska, M. K., additional, Kim, D.-H., additional, Kim, M.-J., additional, Konstanciak, I., additional, Kudak, V., additional, Kulczak, P., additional, Maestre, J. L., additional, Manzini, F., additional, Marks, S., additional, Monteiro, F., additional, Ogłoza, W., additional, Oszkiewicz, D., additional, Pilcher, F., additional, Perig, V., additional, Polakis, T., additional, Polińska, M., additional, Roy, R., additional, Sanabria, J. J., additional, Santana-Ros, T., additional, Skiff, B., additional, Skrzypek, J., additional, Sobkowiak, K., additional, Sonbas, E., additional, Thizy, O., additional, Trela, P., additional, Urakawa, S., additional, Żejmo, M., additional, and Żukowski, K., additional

Published
2019
Full Text
View/download PDF

26. Properties of slowly rotating asteroids from the Convex Inversion Thermophysical Model

Author

Marciniak, A., Ďurech, J., Alí-Lagoa, V., Ogłoza, W., Szakáts, R., Müller, T. G., Molnár, L., Pál, A., Monteiro, F., Arcoverde, P., Behrend, R., Benkhaldoun, Z., Bernasconi, L., Bosch, J., Brincat, S., Brunetto, L., Butkiewicz - Bąk, M., Del Freo, F., Duffard, R., Evangelista-Santana, M., Farroni, G., Fauvaud, S., Fauvaud, M., Ferrais, M., Geier, S., Golonka, J., Grice, J., Hirsch, R., Horbowicz, J., Jehin, E., Julien, P., Kalup, Cs., Kamiński, K., Kamińska, M. K., Kankiewicz, P., Kecskeméthy, V., Kim, D.-H., Kim, M.-J., Konstanciak, I., Krajewski, J., Kudak, V., Kulczak, P., Kundera, T., Lazzaro, D., Manzini, F., Medeiros, H., Michimani-Garcia, J., Morales, N., Nadolny, J., Oszkiewicz, D., Pakštienė, E., Pawłowski, M., Perig, V., Pilcher, F., Pinel, P., Podlewska-Gaca, E., Polakis, T., Richard, F., Rodrigues, T., Rondón, E., Roy, R., Sanabria, J. J., Santana-Ros, T., Skiff, B., Skrzypek, J., Sobkowiak, K., Sonbas, E., Stachowski, G., Strajnic, J., Trela, P., Tychoniec, Ł., Urakawa, S., Verebelyi, E., Wagrez, K., Żejmo, M., Żukowski, K., Marciniak, A., Ďurech, J., Alí-Lagoa, V., Ogłoza, W., Szakáts, R., Müller, T. G., Molnár, L., Pál, A., Monteiro, F., Arcoverde, P., Behrend, R., Benkhaldoun, Z., Bernasconi, L., Bosch, J., Brincat, S., Brunetto, L., Butkiewicz - Bąk, M., Del Freo, F., Duffard, R., Evangelista-Santana, M., Farroni, G., Fauvaud, S., Fauvaud, M., Ferrais, M., Geier, S., Golonka, J., Grice, J., Hirsch, R., Horbowicz, J., Jehin, E., Julien, P., Kalup, Cs., Kamiński, K., Kamińska, M. K., Kankiewicz, P., Kecskeméthy, V., Kim, D.-H., Kim, M.-J., Konstanciak, I., Krajewski, J., Kudak, V., Kulczak, P., Kundera, T., Lazzaro, D., Manzini, F., Medeiros, H., Michimani-Garcia, J., Morales, N., Nadolny, J., Oszkiewicz, D., Pakštienė, E., Pawłowski, M., Perig, V., Pilcher, F., Pinel, P., Podlewska-Gaca, E., Polakis, T., Richard, F., Rodrigues, T., Rondón, E., Roy, R., Sanabria, J. J., Santana-Ros, T., Skiff, B., Skrzypek, J., Sobkowiak, K., Sonbas, E., Stachowski, G., Strajnic, J., Trela, P., Tychoniec, Ł., Urakawa, S., Verebelyi, E., Wagrez, K., Żejmo, M., and Żukowski, K.

Abstract

Context. Recent results for asteroid rotation periods from the TESS mission showed how strongly previous studies have underestimated the number of slow rotators, revealing the importance of studying those targets. For most slowly rotating asteroids (those with P > 12 h), no spin and shape model is available because of observation selection effects. This hampers determination of their thermal parameters and accurate sizes. Also, it is still unclear whether signatures of different surface material properties can be seen in thermal inertia determined from mid-infrared thermal flux fitting. Aims. We continue our campaign in minimising selection effects among main belt asteroids. Our targets are slow rotators with low light-curve amplitudes. Our goal is to provide their scaled spin and shape models together with thermal inertia, albedo, and surface roughness to complete the statistics. Methods. Rich multi-apparition datasets of dense light curves are supplemented with data from Kepler and TESS spacecrafts. In addition to data in the visible range, we also use thermal data from infrared space observatories (mainly IRAS, Akari and WISE) in a combined optimisation process using the Convex Inversion Thermophysical Model. This novel method has so far been applied to only a few targets, and therefore in this work we further validate the method itself. Results. We present the models of 16 slow rotators, including two updated models. All provide good fits to both thermal and visible data.The obtained sizes are on average accurate at the 5% precision level, with diameters found to be in the range from 25 to 145 km. The rotation periods of our targets range from 11 to 59 h, and the thermal inertia covers a wide range of values, from 2 to <400 J m−2 s−1∕2 K−1, not showing any correlation with the period. Conclusions. With this wor

27. Thermal properties of slowly rotating asteroids: Results from a targeted survey

Author

Marciniak, A, Ali-Lagoa, V, Muller, T.G, Szakáts, R, Molnár, L, Pál, A, Antonini, P, Barbotin, E, Behrend, R, Bernasconi, L, Butkiewicz-Bak, M, Crippa, R, Duffard, R, Ditteon, R, Feuerbach, M, Fauvaud, S, Garlitz, J, Geier, S, Goncalves, R, Grice, J, Grzeskowiak, I, Hirsch, R, Horbowicz, J, Kaminski, K, Kaminska, M.K, Kim, D.H, Kim, M.J, Konstanciak, I, Kudak, V, Kulczak, P, Maestre, J.L, Manzini, F, Marks, S, Monteiro, F, Ogłoza, W, Oszkiewicz, D, Pilcher, F, Perig, V, Polakis, T, Polinska, M, Roy, R, Sanabria, J.J, Santana-Ros, T, Skiff, B, Skrzypek, J, Sobkowiak, K, Sonbas, E, Thizy, O, Trela, P, Urakawa, S, Zejmo, M, Zukowski, K, Marciniak, A, Ali-Lagoa, V, Muller, T.G, Szakáts, R, Molnár, L, Pál, A, Antonini, P, Barbotin, E, Behrend, R, Bernasconi, L, Butkiewicz-Bak, M, Crippa, R, Duffard, R, Ditteon, R, Feuerbach, M, Fauvaud, S, Garlitz, J, Geier, S, Goncalves, R, Grice, J, Grzeskowiak, I, Hirsch, R, Horbowicz, J, Kaminski, K, Kaminska, M.K, Kim, D.H, Kim, M.J, Konstanciak, I, Kudak, V, Kulczak, P, Maestre, J.L, Manzini, F, Marks, S, Monteiro, F, Ogłoza, W, Oszkiewicz, D, Pilcher, F, Perig, V, Polakis, T, Polinska, M, Roy, R, Sanabria, J.J, Santana-Ros, T, Skiff, B, Skrzypek, J, Sobkowiak, K, Sonbas, E, Thizy, O, Trela, P, Urakawa, S, Zejmo, M, and Zukowski, K

Abstract

Context. Earlier work suggests that slowly rotating asteroids should have higher thermal inertias than faster rotators because the heat wave penetrates deeper into the subsurface. However, thermal inertias have been determined mainly for fast rotators due to selection effects in the available photometry used to obtain shape models required for thermophysical modelling (TPM). Aims. Our aims are to mitigate these selection effects by producing shape models of slow rotators, to scale them and compute their thermal inertia with TPM, and to verify whether thermal inertia increases with the rotation period. Methods. To decrease the bias against slow rotators, we conducted a photometric observing campaign of main-belt asteroids with periods longer than 12 h, from multiple stations worldwide, adding in some cases data from WISE and Kepler space telescopes. For spin and shape reconstruction we used the lightcurve inversion method, and to derive thermal inertias we applied a thermophysical model to fit available infrared data from IRAS, AKARI, and WISE. Results. We present new models of 11 slow rotators that provide a good fit to the thermal data. In two cases, the TPM analysis showed a clear preference for one of the two possible mirror solutions. We derived the diameters and albedos of our targets in addition to their thermal inertias, which ranged between 3−3 and 3+−333 and 45+−6030 J m−2 s−1/2 K−1. Conclusions. Together with our previous work, we have analysed 16 slow rotators from our dense survey with sizes between 30 and 150 km. The current sample thermal inertias vary widely, which does not confirm the earlier suggestion that slower rotators have higher thermal inertias.

28. Scaling slowly rotating asteroids with stellar occultations

Author

Marciniak, A., Ďurech, J., Choukroun, A., Hanuš, J., Ogłoza, W., Szakáts, R., Molnár, L., Pál, A., Monteiro, F., Frappa, E., Beisker, W., Pavlov, H., Moore, J., Adomavičienė, R., Aikawa, R., Andersson, S., Antonini, P., Argentin, Y., Asai, A., Assoignon, P., Barton, J., Baruffetti, P., Bath, K. L., Behrend, R., Benedyktowicz, L., Bernasconi, L., Biguet, G., Billiani, M., Błażewicz, D., Boninsegna, R., Borkowski, M., Bosch, J., Brazill, S., Bronikowska, M., Bruno, A., Butkiewicz-Bąk, M., Caron, J., Casalnuovo, G., Castellani, J. J., Ceravolo, P., Conjat, M., Delincak, P., Delpau, J., Demeautis, C., Demirkol, A., Dróżdż, M., Duffard, R., Durandet, C., Eisfeldt, D., Evangelista, M., Fauvaud, S., Fauvaud, M., Ferrais, M., Filipek, M., Fini, P., Fukui, K., Gährken, B., Geier, S., George, T., Goffin, B., Golonka, J., Goto, T., Grice, J., Guhl, K., Halíř, K., Hanna, W., Harman, M., Hashimoto, A., Hasubick, W., Higgins, D., Higuchi, M., Hirose, T., Hirsch, R., Hofschulz, O., Horaguchi, T., Horbowicz, J., Ida, M., Ignácz, B., Ishida, M., Isobe, K., Jehin, E., Joachimczyk, B., Jones, A., Juan, J., Kamiński, K., Kamińska, M. K., Kankiewicz, P., Kasebe, H., Kattentidt, B., Kim, D.-H., Kim, M.-J., Kitazaki, K., Klotz, A., Komraus, M., Konstanciak, I., Könyves-Tóth, R., Kouno, K., Kowald, E., Krajewski, J., Krannich, G., Kreutzer, A., Kryszczyńska, A., Kubánek, J., Kudak, V., Kugel, F., Kukita, R., Kulczak, P., Lazzaro, D., Licandro, J., Livet, F., Maley, P., Manago, N., Mánek, J., Manna, A., Matsushita, H., Meister, S., Mesquita, W., Messner, S., Michelet, J., Michimani, J., Mieczkowska, I., Morales, N., Motyliński, M., Murawiecka, M., Newman, J., Nikitin, V., Nishimura, M., Oey, J., Oszkiewicz, D., Owada, M., Pakštienė, E., Pawłowski, M., Pereira, W., Perig, V., Perła, J., Pilcher, F., Podlewska-Gaca, E., Polák, J., Polakis, T., Polińska, M., Popowicz, A., Richard, F., Rives, J. J, Rodrigues, T., Rogiński, Ł., Rondón, E., Rottenborn, M., Schäfer, R., Schnabel, C., Schreurs, O., Selva, A., Simon, M., Skiff, B., Skrutskie, M., Skrzypek, J., Sobkowiak, K., Sonbas, E., Sposetti, S., Stuart, P., Szyszka, K., Terakubo, K., Thomas, W., Trela, P., Uchiyama, S., Urbanik, M., Vaudescal, G., Venable, R., Watanabe, Ha., Watanabe, Hi., Winiarski, M., Wróblewski, R., Yamamura, H., Yamashita, M., Yoshihara, H., Zawilski, M., Zelený, P., Żejmo, M., Żukowski, K., Żywica, S., Marciniak, A., Ďurech, J., Choukroun, A., Hanuš, J., Ogłoza, W., Szakáts, R., Molnár, L., Pál, A., Monteiro, F., Frappa, E., Beisker, W., Pavlov, H., Moore, J., Adomavičienė, R., Aikawa, R., Andersson, S., Antonini, P., Argentin, Y., Asai, A., Assoignon, P., Barton, J., Baruffetti, P., Bath, K. L., Behrend, R., Benedyktowicz, L., Bernasconi, L., Biguet, G., Billiani, M., Błażewicz, D., Boninsegna, R., Borkowski, M., Bosch, J., Brazill, S., Bronikowska, M., Bruno, A., Butkiewicz-Bąk, M., Caron, J., Casalnuovo, G., Castellani, J. J., Ceravolo, P., Conjat, M., Delincak, P., Delpau, J., Demeautis, C., Demirkol, A., Dróżdż, M., Duffard, R., Durandet, C., Eisfeldt, D., Evangelista, M., Fauvaud, S., Fauvaud, M., Ferrais, M., Filipek, M., Fini, P., Fukui, K., Gährken, B., Geier, S., George, T., Goffin, B., Golonka, J., Goto, T., Grice, J., Guhl, K., Halíř, K., Hanna, W., Harman, M., Hashimoto, A., Hasubick, W., Higgins, D., Higuchi, M., Hirose, T., Hirsch, R., Hofschulz, O., Horaguchi, T., Horbowicz, J., Ida, M., Ignácz, B., Ishida, M., Isobe, K., Jehin, E., Joachimczyk, B., Jones, A., Juan, J., Kamiński, K., Kamińska, M. K., Kankiewicz, P., Kasebe, H., Kattentidt, B., Kim, D.-H., Kim, M.-J., Kitazaki, K., Klotz, A., Komraus, M., Konstanciak, I., Könyves-Tóth, R., Kouno, K., Kowald, E., Krajewski, J., Krannich, G., Kreutzer, A., Kryszczyńska, A., Kubánek, J., Kudak, V., Kugel, F., Kukita, R., Kulczak, P., Lazzaro, D., Licandro, J., Livet, F., Maley, P., Manago, N., Mánek, J., Manna, A., Matsushita, H., Meister, S., Mesquita, W., Messner, S., Michelet, J., Michimani, J., Mieczkowska, I., Morales, N., Motyliński, M., Murawiecka, M., Newman, J., Nikitin, V., Nishimura, M., Oey, J., Oszkiewicz, D., Owada, M., Pakštienė, E., Pawłowski, M., Pereira, W., Perig, V., Perła, J., Pilcher, F., Podlewska-Gaca, E., Polák, J., Polakis, T., Polińska, M., Popowicz, A., Richard, F., Rives, J. J, Rodrigues, T., Rogiński, Ł., Rondón, E., Rottenborn, M., Schäfer, R., Schnabel, C., Schreurs, O., Selva, A., Simon, M., Skiff, B., Skrutskie, M., Skrzypek, J., Sobkowiak, K., Sonbas, E., Sposetti, S., Stuart, P., Szyszka, K., Terakubo, K., Thomas, W., Trela, P., Uchiyama, S., Urbanik, M., Vaudescal, G., Venable, R., Watanabe, Ha., Watanabe, Hi., Winiarski, M., Wróblewski, R., Yamamura, H., Yamashita, M., Yoshihara, H., Zawilski, M., Zelený, P., Żejmo, M., Żukowski, K., and Żywica, S.

Abstract

Context. As evidenced by recent survey results, the majority of asteroids are slow rotators (spin periods longer than 12 h), but lack spin and shape models because of selection bias. This bias is skewing our overall understanding of the spins, shapes, and sizes of asteroids, as well as of their other properties. Also, diameter determinations for large (>60 km) and medium-sized asteroids (between 30 and 60 km) often vary by over 30% for multiple reasons. Aims. Our long-term project is focused on a few tens of slow rotators with periods of up to 60 h. We aim to obtain their full light curves and reconstruct their spins and shapes. We also precisely scale the models, typically with an accuracy of a few percent. Methods. We used wide sets of dense light curves for spin and shape reconstructions via light-curve inversion. Precisely scaling them with thermal data was not possible here because of poor infrared datasets: large bodies tend to saturate in WISE mission detectors. Therefore, we recently also launched a special campaign among stellar occultation observers, both in order to scale these models and to verify the shape solutions, often allowing us to break the mirror pole ambiguity. Results. The presented scheme resulted in shape models for 16 slow rotators, most of them for the first time. Fitting them to chords from stellar occultation timings resolved previous inconsistencies in size determinations. For around half of the targets, this fitting also allowed us to identify a clearly preferred pole solution from the pair of two mirror pole solutions, thus removing the ambiguity inherent to light-curve inversion. We also address the influence of the uncertainty of the shape models on the derived diameters. Conclusions. Overall, our project has already provided reliable models for around 50 slow rotators. Such well-determined and scaled asteroid shapes will, for example, constitute a solid basis fo

29. Properties of slowly rotating asteroids from the Convex Inversion Thermophysical Model

Author

Marciniak, A., Ďurech, J., Alí-Lagoa, V., Ogłoza, W., Szakáts, R., Müller, T. G., Molnár, L., Pál, A., Monteiro, F., Arcoverde, P., Behrend, R., Benkhaldoun, Z., Bernasconi, L., Bosch, J., Brincat, S., Brunetto, L., Butkiewicz - Bąk, M., Del Freo, F., Duffard, R., Evangelista-Santana, M., Farroni, G., Fauvaud, S., Fauvaud, M., Ferrais, M., Geier, S., Golonka, J., Grice, J., Hirsch, R., Horbowicz, J., Jehin, E., Julien, P., Kalup, Cs., Kamiński, K., Kamińska, M. K., Kankiewicz, P., Kecskeméthy, V., Kim, D.-H., Kim, M.-J., Konstanciak, I., Krajewski, J., Kudak, V., Kulczak, P., Kundera, T., Lazzaro, D., Manzini, F., Medeiros, H., Michimani-Garcia, J., Morales, N., Nadolny, J., Oszkiewicz, D., Pakštienė, E., Pawłowski, M., Perig, V., Pilcher, F., Pinel, P., Podlewska-Gaca, E., Polakis, T., Richard, F., Rodrigues, T., Rondón, E., Roy, R., Sanabria, J. J., Santana-Ros, T., Skiff, B., Skrzypek, J., Sobkowiak, K., Sonbas, E., Stachowski, G., Strajnic, J., Trela, P., Tychoniec, Ł., Urakawa, S., Verebelyi, E., Wagrez, K., Żejmo, M., Żukowski, K., Marciniak, A., Ďurech, J., Alí-Lagoa, V., Ogłoza, W., Szakáts, R., Müller, T. G., Molnár, L., Pál, A., Monteiro, F., Arcoverde, P., Behrend, R., Benkhaldoun, Z., Bernasconi, L., Bosch, J., Brincat, S., Brunetto, L., Butkiewicz - Bąk, M., Del Freo, F., Duffard, R., Evangelista-Santana, M., Farroni, G., Fauvaud, S., Fauvaud, M., Ferrais, M., Geier, S., Golonka, J., Grice, J., Hirsch, R., Horbowicz, J., Jehin, E., Julien, P., Kalup, Cs., Kamiński, K., Kamińska, M. K., Kankiewicz, P., Kecskeméthy, V., Kim, D.-H., Kim, M.-J., Konstanciak, I., Krajewski, J., Kudak, V., Kulczak, P., Kundera, T., Lazzaro, D., Manzini, F., Medeiros, H., Michimani-Garcia, J., Morales, N., Nadolny, J., Oszkiewicz, D., Pakštienė, E., Pawłowski, M., Perig, V., Pilcher, F., Pinel, P., Podlewska-Gaca, E., Polakis, T., Richard, F., Rodrigues, T., Rondón, E., Roy, R., Sanabria, J. J., Santana-Ros, T., Skiff, B., Skrzypek, J., Sobkowiak, K., Sonbas, E., Stachowski, G., Strajnic, J., Trela, P., Tychoniec, Ł., Urakawa, S., Verebelyi, E., Wagrez, K., Żejmo, M., and Żukowski, K.

Abstract

Context. Recent results for asteroid rotation periods from the TESS mission showed how strongly previous studies have underestimated the number of slow rotators, revealing the importance of studying those targets. For most slowly rotating asteroids (those with P > 12 h), no spin and shape model is available because of observation selection effects. This hampers determination of their thermal parameters and accurate sizes. Also, it is still unclear whether signatures of different surface material properties can be seen in thermal inertia determined from mid-infrared thermal flux fitting. Aims. We continue our campaign in minimising selection effects among main belt asteroids. Our targets are slow rotators with low light-curve amplitudes. Our goal is to provide their scaled spin and shape models together with thermal inertia, albedo, and surface roughness to complete the statistics. Methods. Rich multi-apparition datasets of dense light curves are supplemented with data from Kepler and TESS spacecrafts. In addition to data in the visible range, we also use thermal data from infrared space observatories (mainly IRAS, Akari and WISE) in a combined optimisation process using the Convex Inversion Thermophysical Model. This novel method has so far been applied to only a few targets, and therefore in this work we further validate the method itself. Results. We present the models of 16 slow rotators, including two updated models. All provide good fits to both thermal and visible data.The obtained sizes are on average accurate at the 5% precision level, with diameters found to be in the range from 25 to 145 km. The rotation periods of our targets range from 11 to 59 h, and the thermal inertia covers a wide range of values, from 2 to <400 J m−2 s−1∕2 K−1, not showing any correlation with the period. Conclusions. With this wor

Catalog

Books, media, physical & digital resources
See catalog results