Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Pilecki Bogumil"'
Autor:
Pilecki, Bogumił
Almost half of all classical Cepheids do not pulsate in fundamental mode, and nowadays, the fundamentalization of their higher-mode periods is frequently applied to increase the sample size in astrophysical investigations and allow for comparison wit
Externí odkaz:
http://arxiv.org/abs/2406.18656
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
Publikováno v:
2024, IAUS, 376, 150
We present a progress report of our project aiming to increase the number of known Cepheids in double-lined binary (SB2) systems from six to 100 or more. This will allow us, among other goals, to accurately measure masses for a large sample of Cephei
Externí odkaz:
http://arxiv.org/abs/2403.18312
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:
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:
Pilecki, Bogumił, Thompson, Ian B., Espinoza-Arancibia, Felipe, Anderson, Richard I., Gieren, Wolfgang, Narloch, Weronika, Minniti, Javier, Pietrzyński, Grzegorz, Taormina, Mónica, Bono, Giuseppe, Hajdu, Gergely
Publikováno v:
2022, ApJL, 940, L48
We report the discovery of a surprising binary configuration of the double-mode Cepheid OGLE-LMC-CEP-1347 pulsating in the first (P_1=0.690d) and second overtone (P_2=0.556d) modes. The orbital period (P_orb=59d) of the system is five times shorter t
Externí odkaz:
http://arxiv.org/abs/2212.04518
Autor:
Evans, Chris, Cristiani, Stefano, Opitom, Cyrielle, Cescutti, Gabriele, D'Odorico, Valentina, Alcalá, Juan Manuel, Alencar, Silvia H. P., Balashev, Sergei, Barbuy, Beatriz, Bastian, Nate, Battino, Umberto, Cambianica, Pamela, Carini, Roberta, Carter, Brad, Cassisi, Santi, Castilho, Bruno Vaz, Christlieb, Norbert, Cooke, Ryan, Covino, Stefano, Cremonese, Gabriele, Cunha, Katia, da Silva, André R., D'Elia, Valerio, De Cia, Annalisa, De Silva, Gayandhi, Diaz, Marcos, Di Marcantonio, Paolo, Ernandes, Heitor, Fitzsimmons, Alan, Franchini, Mariagrazia, Gänsicke, Boris T., Genoni, Matteo, Giribaldi, Riano E., Grazian, Andrea, Hansen, Camilla Juul, La Forgia, Fiorangela, Lazzarin, Monica, Marcolino, Wagner, Marconi, Marcella, Migliorini, Alessandra, Noterdaeme, Pasquier, Pereira, Claudio, Pilecki, Bogumil, Quirrenbach, Andreas, Randich, Sofia, Rossi, Silvia, Smiljanic, Rodolfo, Snodgrass, Colin, Stürmer, Julian, Trost, Andrea, Vanzella, Eros, Ventura, Paolo, Wright, Duncan, Zafar, Tayyaba
We introduce the scientific motivations for the development of the Cassegrain U-Band Efficient Spectrograph (CUBES) that is now in construction for the Very Large Telescope. The assembled cases span a broad range of contemporary topics across Solar S
Externí odkaz:
http://arxiv.org/abs/2208.01677
Autor:
Nardetto Nicolas, Poretti Ennio, Mérand Antoine, Anderson Richard I., Fokin Andrei, Fouqué Pascal, Gallenne Alexandre, Gieren Wolfgang, Graczyk Dariusz, Kervella Pierre, Mathias Philippe, Mourard Denis, Neilson Hilding, Pietrzynski Grzegorz, Pilecki Bogumil, Rainer Monica, Storm Jesper
Publikováno v:
EPJ Web of Conferences, Vol 152, p 07003 (2017)
Even ≃ 16000 cycles after its discovery by John Goodricke in 1783, δ Cep, the prototype of classical Cepheids, is still studied intensively in order to better understand its atmospheric dynamical structure and its environment. Using HARPS-N spectr
Externí odkaz:
https://doaj.org/article/4bf272bcf0f54637a02ee21c69b80518
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