Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Zgirski Bartlomiej"'
Autor:
Zgirski, Bartłomiej, Gieren, Wolfgang, Pietrzyński, Grzegorz, Górski, Marek, Wielgórski, Piotr, Storm, Jesper, Bras, Garance, Kervella, Pierre, Nardetto, Nicolas, Hajdu, Gergely, Chini, Rolf, Haas, Martin
Publikováno v:
A&A 690, A295 (2024)
The Baade-Wesselink method allows us to estimate distances to individual pulsating stars. Accurate geometric parallaxes obtained by the Gaia mission serve us in the calibration of the method and in the determination of its precision. The method also
Externí odkaz:
http://arxiv.org/abs/2408.02102
Autor:
Wielgórski, Piotr, Pietrzyński, Grzegorz, Gieren, Wolfgang, Zgirski, Bartłomiej, Górski, Marek, Storm, Jesper, Nardetto, Nicolas, Kervella, Pierre, Bras, Garance, Hajdu, Gergely, Hocdé, Vincent, Pilecki, Bogumił, Narloch, Weronika, Karczmarek, Paulina, Pych, Wojciech, Chini, Rolf, Hodapp, Klaus
Type II Cepheids are old pulsating stars that can be used to trace the distribution of an old stellar population and to measure distances to globular clusters and galaxies within several megaparsecs. One method that can be used to measure the distanc
Externí odkaz:
http://arxiv.org/abs/2406.16561
Autor:
Pilecki, Bogumił, Thompson, Ian B., Espinoza-Arancibia, Felipe, Hajdu, Gergely, Gieren, Wolfgang, Taormina, Mónica, Pietrzyński, Grzegorz, Narloch, Weronika, Bono, Giuseppe, Gallenne, Alexandre, Kervella, Pierre, Wielgórski, Piotr, Zgirski, Bartłomiej, Graczyk, Dariusz, Karczmarek, Paulina, Evans, Nancy R.
Publikováno v:
A&A 686, A263 (2024)
Binary Cepheids with giant companions are crucial for studying the physical properties of Cepheid variables, providing the best means to measure their masses. Systems composed of two Cepheids are even more important but to date, only one such system
Externí odkaz:
http://arxiv.org/abs/2403.12390
Autor:
Narloch, Weronika, Hajdu, Gergely, Pietrzynski, Grzegorz, Gieren, Wolfgang, Wielgorski, Piotr, Zgirski, Bartlomiej, Karczmarek, Paulina, Gorski, Marek, Graczyk, Dariusz
We present the first period-luminosity (PL) and period-Wesenheit (PW) relations in the Sloan-Pans-STARRS gP1rP1iP1 bands for classical fundamental mode Cepheids in the Milky Way. We used a relatively modest number of 76 stars for the PL and 84-85 sta
Externí odkaz:
http://arxiv.org/abs/2306.06326
Autor:
Zgirski, Bartłomiej, Pietrzyński, Grzegorz, Górski, Marek, Gieren, Wolfgang, Wielgórski, Piotr, Karczmarek, Paulina, Hajdu, Gergely, Lewis, Megan, Chini, Rolf, Graczyk, Dariusz, Kałuszyński, Mikołaj, Narloch, Weronika, Pilecki, Bogumił, García, Gonzalo Rojas, Suchomska, Ksenia, Taormina, Mónica
We present new period-luminosity and period-luminosity-metallicity relations for Galactic RR Lyrae stars based on a sample of 28 pulsators located at distances up to $1.5$ kpc from the Sun. Near-infrared photometry was obtained at the Cerro Armazones
Externí odkaz:
http://arxiv.org/abs/2305.09414
Autor:
Zgirski Bartlomiej, Gieren Wolfgang, Pietrzyński Grzegorz, Karczmarek Paulina, Górski Marek, Graczyk Dariusz, Pilecki Bogumil, Taormina Mónica, Suchomska Ksenia, Wielgórski Piotr, Konorski Piotr
Publikováno v:
EPJ Web of Conferences, Vol 152, p 07010 (2017)
We performed deep near-infrared J and K photometry of a field in the Sculptor Group spiral galaxy NGC 7793 using ESO VLT and HAWK-I instrument. We produced a sample of 14 Cepheids whose locations and periods of pulsation were known from our previous
Externí odkaz:
https://doaj.org/article/e5dea50a386749a3add8b100b7ec77a6
Autor:
Wielgórski, Piotr, Pietrzyński, Grzegorz, Pilecki, Bogumił, Gieren, Wolfgang, Zgirski, Bartłomiej, Górski, Marek, Hajdu, Gergely, Narloch, Weronika, Karczmarek, Paulina, Smolec, Radosław, Kervella, Pierre, Storm, Jesper, Gallenne, Alexandre, Breuval, Louise, Lewis, Megan, Kałuszyński, Mikołaj, Graczyk, Dariusz, Pych, Wojciech, Suchomska, Ksenia, Taormina, Mónica, Garcia, Gonzalo Rojas, Kotek, Aleksandra, Chini, Rolf, Nuñez, Francisco Pozo, Noroozi, Sadegh, Figaredo, Catalina Sobrino, Haas, Martin, Hodapp, Klaus, Mikołajczyk, Przemysław, Kotysz, Krzysztof, Moździerski, Dawid, Kołaczek-Szymański, Piotr
We present time-series photometry of 21 nearby Type II Cepheids in the near-infrared J, H and Ks passbands. We use this photometry, together with the Third Gaia Early Data Release parallaxes, to determine for the first time period-luminosity relation
Externí odkaz:
http://arxiv.org/abs/2112.12122
Autor:
Zgirski, Bartłomiej, Pietrzyński, Grzegorz, Gieren, Wolfgang, Górski, Marek, Wielgórski, Piotr, Karczmarek, Paulina, Bresolin, Fabio, Kervella, Pierre, Kudritzki, Rolf-Peter, Storm, Jesper, Graczyk, Dariusz, Hajdu, Gergely, Narloch, Weronika, Pilecki, Bogumił, Suchomska, Ksenia, Taormina, Mónica
Our work presents an independent calibration of the J-region Asymptotic Giant Branch (JAGB) method using Infrared Survey Facility (IRSF) photometric data and a custom luminosity function profile to determine JAGB mean magnitudes for nine galaxies. We
Externí odkaz:
http://arxiv.org/abs/2105.02120
Autor:
Breuval, Louise, Kervella, Pierre, Wielgórski, Piotr, Gieren, Wolfgang, Graczyk, Dariusz, Trahin, Boris, Pietrzyński, Grzegorz, Arenou, Frédéric, Javanmardi, Behnam, Zgirski, Bartlomiej
The Cepheid Period-Luminosity (PL) relation is the key tool for measuring astronomical distances and for establishing the extragalactic distance scale. In particular, the local value of the Hubble constant ($H_0$) strongly depends on Cepheid distance
Externí odkaz:
http://arxiv.org/abs/2103.10894
Autor:
Karczmarek, Paulina, Pietrzyński, Grzegorz, Gieren, Wolfgang, Narloch, Weronika, Hajdu, Gergely, García, Gonzalo Rojas, Kałuszyński, Mikołaj, Górski, Marek, Suchomska, Ksenia, Graczyk, Dariusz, Pilecki, Bogumił, Wielgórski, Piotr, Zgirski, Bartłomiej, Taormina, Mónica, Sadh, Mradumay
Deep near-infrared $J$- and $K$-band photometry of three Local Group dwarf spheroidal galaxies: Fornax, Carina, and Sculptor, is made available for the community. Until now, these data have only been used by the Araucaria Project to determine distanc
Externí odkaz:
http://arxiv.org/abs/2101.09888