Zobrazeno 1 - 10
of 353
pro vyhledávání: '"Hajdú G"'
Autor:
García, G. Rojas, Graczyk, D., Pietrzyński, G., Gałan, C., Gieren, W., Thompson, I., Suchomska, K., Kałuszyński, M., Soszyński, I., Udalski, A., Karczmarek, P., Narloch, W., Górski, M., Wielgórski, P., Zgirski, B., Miller, N., Hajdu, G., Pilecki, B., Taormina, M., Lewis, M.
Publikováno v:
A&A 692, A110 (2024)
Detached eclipsing binaries (DEBs) allow for the possibility of precise characterization of its stellar components. They offer a unique opportunity to derive their physical parameters in a near-model-independent way for a number of systems consisting
Externí odkaz:
http://arxiv.org/abs/2410.18619
Autor:
Narloch, W., Hajdu, G., Pietrzynski, G., Gieren, W., Zgirski, B., Wielgorski, P., Karczmarek, P., Gorski, M., Graczyk, D.
RR Lyrae stars are excellent tracers of the old population II due to their period-luminosity (PL) and period-luminosity-metallicity (PLZ) relations. While these relations have been investigated in detail in many photometric bands, there are few compr
Externí odkaz:
http://arxiv.org/abs/2406.12408
Autor:
Taormina, Mónica, Kudritzki, R. -P., Pilecki, B., Pietrzyński, G., Thompson, I. B., Puls, J., Górski, M., Zgirski, B., Graczyk, D., Gieren, W., Hajdu, G.
We present the results from a complex study of an eclipsing O-type binary (Aa+Ab) with the orbital period $P_{A}=3.2254367$ days, that forms part of a higher-order multiple system in a configuration (A+B)+C. We derived masses of the Aa+Ab binary $M_{
Externí odkaz:
http://arxiv.org/abs/2404.02970
Autor:
Project, The Araucaria, Pietrzyński, G., Gieren, W., Karczmarek, P., Górski, M., Zgirski, B., Wielgórski, P., Breuval, L., Suchomska, K., Gallenne, A., Kervella, P., Hajdu, G., Pilecki, B., Storm, J., Nardetto, N., Kudritzki, R. P., Taormina, M., Bresolin, F., Smolec, R., Narloch, W., Gałan, C., Lewis, M., Chini, R.
Publikováno v:
Published on behalf of the Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences. Editors: P. Karczmarek, M. Lewis, G. Pietrzy\'nski. Publisher: Wydawnictwo Aleksander, Pu{\l}tusk 2021. ISBN: 978-83-66856-07-3
The book consists of a number of short articles that present achievements of the Araucaria members, collaborators, and friends, in various aspects of distance determinations and related topics. It celebrates the 20-year anniversary of the Araucaria P
Externí odkaz:
http://arxiv.org/abs/2305.17247
Autor:
Nardetto, N., Gieren, W., Storm, J., Hocde, V., Pietrzynski, G., Kervella, P., Merand, A., Gallenne, A., Graczyk, D., Pilecki, B., Poretti, E., Rainer, M., Zgirski, B., Wielgorski, P., Hajdu, G., Gorski, M., Karczmarek, P., Narloch, W., Taormina, M.
Publikováno v:
A&A 671, A14 (2023)
The Baade-Wesselink (BW) method of distance determination of Cepheids is used to calibrate the distance scale. Various versions of this method are mainly based on interferometry and/or the surface-brightness color relation (SBCR). We quantify the imp
Externí odkaz:
http://arxiv.org/abs/2301.09468
Autor:
Suchomska, K., Graczyk, D., Gałan, C., Ziółkowska, O., Smolec, R., Pietrzyński, G., Gieren, W., Villanova, S., Górski, M., Thompson, I. B., Wielgórski, P., Zgirski, B., Karczmarek, P., Pilecki, B., Taormina, M., Narloch, W., Hajdu, G., Lewis, M., Kałuszyński, M., García, G. Rojas
Publikováno v:
A&A 668, A30 (2022)
Our goal is to determine, with high accuracy, the physical and orbital parameters of two double-lined eclipsing binary systems, where the components are two giant stars. We also aim to study the evolutionary status of the binaries, to derive the dist
Externí odkaz:
http://arxiv.org/abs/2210.12413
Autor:
Espinoza-Arancibia, F., Catelan, M., Hajdu, G., Rodríguez-Segovia, N., Boggiano, G., Joachimi, K., Muñoz-López, C., Ordenes-Huanca, C., Orquera-Rojas, C., Torres, P., Valenzuela-Navarro, Á.
Pulsating stars, such as Cepheids and RR Lyrae, offer us a window to measure and study changes due to stellar evolution. In this work, we study the former by calculating a set of evolutionary tracks of stars with an initial mass of 4 to 7 $M_\odot$,
Externí odkaz:
http://arxiv.org/abs/2209.10609
Autor:
Graczyk, D., Pietrzyński, G., Galan, C., Southworth, J., Gieren, W., Kałuszyński, M., Zgirski, B., Gallenne, A., Górski, M., Hajdu, G., Karczmarek, P., Kervella, P., Maxted, P. F. L., Nardetto, N., Narloch, W., Pilecki, B., Pych, W., Garcia, G. Rojas, Storm, J., Suchomska, K., Taormina, M., Wielgórski, P.
Publikováno v:
A&A 666, A128 (2022)
Surface brightness -- colour relations (SBCRs) are very useful tools for predicting the angular diameters of stars. They offer the possibility to calculate very precise spectrophotometric distances by the eclipsing binary method or the Baade-Wesselin
Externí odkaz:
http://arxiv.org/abs/2208.07257
Autor:
Narloch, W., Pietrzyński, G., Gieren, W., Piatti, A. E., Karczmarek, P., Górski, M., Graczyk, D., Smolec, R., Hajdu, G., Suchomska, K., Zgirski, B., Wielgórski, P., Pilecki, B., Taormina, M., Kałuszyński, M., Pych, W., García, G. Rojas, Lewis, M. O.
Publikováno v:
A&A 666, A80 (2022)
We study 147 star clusters in the Large Magellanic Cloud (LMC) in order to determine their mean metallicities and ages, as well as the mean metallicities of 80 surrounding fields. We construct an age-metallicity relation (AMR) for the clusters in the
Externí odkaz:
http://arxiv.org/abs/2207.13153
Autor:
Rodríguez-Segovia, N., Hajdu, G., Catelan, M., Espinoza-Arancibia, F., Boggiano, G., Cenzano, C., H., E. Garcés, Joachimi, K., Muñoz-López, C., Ordenes-Huanca, C., Orquera-Rojas, C., Torres, P., Valenzuela-Navarro, Á.
The period-change rate (PCR) of pulsating variable stars is a useful probe of changes in their interior structure, and thus of their evolutionary stages. So far, the PCRs of Classical Cepheids in the Large Magellanic Cloud (LMC) have been explored in
Externí odkaz:
http://arxiv.org/abs/2111.03503