Zobrazeno 1 - 10
of 3 586
pro vyhledávání: '"A. Udalski"'
Autor:
I. Soszyński, D. M. Skowron, A. Udalski, P. Pietrukowicz, M. Gromadzki, M. K. Szymański, J. Skowron, P. Mróz, R. Poleski, S. Kozłowski, P. Iwanek, M. Wrona, K. Ulaczyk, K. Rybicki, M. Mróz
Publikováno v:
The Astrophysical Journal Letters, Vol 965, Iss 2, p L17 (2024)
We report the discovery of the classical Cepheid OGLE-GD-CEP-1884 (= GDS_J1535467-555656) with the longest pulsation period known in our Galaxy. The period of 78.14 days is nearly 10 days longer than that of the previous record-holding Cepheid, S Vul
Externí odkaz:
https://doaj.org/article/08d61c983336468da3661339f6665c50
Autor:
Han, Cheongho, Bond, Ian A., Udalski, Andrzej, Lee, Chung-Uk, Gould, Andrew, Albrow, Michael D., Chung, Sun-Ju, Hwang, Kyu-Ha, Jung, Youn Kil, Ryu, Yoon-Hyun, Shvartzvald, Yossi, Shin, In-Gu, Yee, Jennifer C., Yang, Hongjing, Zang, Weicheng, Cha, Sang-Mok, Kim, Doeon, Kim, Dong-Jin, Kim, Seung-Lee, Lee, Dong-Joo, Lee, Yongseok, Park, Byeong-Gon, Pogge, Richard W., Abe, Fumio, Bando, Ken, Barry, Richard, Bennett, David P., Bhattacharya, Aparna, Fujii, Hirosame, Fukui, Akihiko, Hamada, Ryusei, Hamada, Shunya, Hamasaki, Naoto, Hirao, Yuki, Silva, Stela Ishitani, Itow, Yoshitaka, Kirikawa, Rintaro, Koshimoto, Naoki, Matsubara, Yutaka, Miyazaki, Shota, Muraki, Yasushi, Nagai, Tutumi, Nunota, Kansuke, Olmschenk, Greg, Ranc, Clément, Rattenbury, Nicholas J., Satoh, Yuki, Sumi, Takahiro, Suzuki, Daisuke, Tomoyoshi, Mio, Tristram, Paul J., Vandorou, Aikaterini, Yama, Hibiki, Yamashita, Kansuke, Szymański, Przemek Mróz Michał K., Skowron, Jan, Poleski, Radosław, Soszyński, Igor, Pietrukowicz, Paweł, Kozłowski, Szymon, Rybicki, Krzysztof A., Iwanek, Patryk, Ulaczyk, Krzysztof, Wrona, Marcin, Gromadzki, Mariusz, Mróz, Mateusz J.
Building on previous works to construct a homogeneous sample of brown dwarfs in binary systems, we investigate microlensing events detected by the Korea Microlensing Telescope Network (KMTNet) survey during the 2022 and 2023 seasons. Given the diffic
Externí odkaz:
http://arxiv.org/abs/2408.11248
Autor:
Gaudin, Thomas M., Coe, Malcolm J., Kennea, Jamie A., Monageng, Itumaleng M., Buckley, David A. H., Udalski, Andrzej, Evans, Phil A.
CXOU J005245.0-722844 is an X-ray source in the Small Magellanic Cloud (SMC) that has long been known as a Be/X-ray binary (BeXRB) star, containing an OBe main sequence star and a compact object. In this paper, we report on a new very fast X-ray outb
Externí odkaz:
http://arxiv.org/abs/2408.01388
Autor:
Rybicki, Krzysztof A., Shvartzvald, Yossi, Yee, Jennifer C., Novati, Sebastiano Calchi, Ofek, Eran O., Bond, Ian A., Beichman, Charles, Bryden, Geoff, Carey, Sean, Henderson, Calen, Zhu, Wei, Fausnaugh, Michael M., Wibking, Benjamin, Udalski, Andrzej, Poleski, Radek, Mróz, Przemek, Szymański, Michal K., Soszyński, Igor, Pietrukowicz, Paweł, Kozłowski, Szymon, Skowron, Jan, Ulaczyk, Krzysztof, Iwanek, Patryk, Wrona, Marcin, Ryu, Yoon-Hyun, Albrow, Michael D., Chung, Sun-Ju, Gould, Andrew, Han, Cheongho, Hwang, Kyu-Ha, Jung, Youn Kil, Shin, In-Gu, Yang, Hongjing, Zang, Weicheng, Cha, Sang-Mok, Kim, Dong-Jin, Kim, Hyoun-Woo, Kim, Seung-Lee, Lee, Chung-Uk, Lee, Dong-Joo, Lee, Yongseok, Park, Byeong-Gon, Pogge, Richard W., Abe, Fumio, Barry, Richard, Bennett, David P., Bhattacharya, Aparna, Fukui, Akihiko, Hamada, Ryusei, Hamada, Shunya, Hamasaki, Naoto, Hirao, Yuki, Silva, Stela Ishitani, Itow, Yoshitaka, Kirikawa, Rintaro, Koshimoto, Naoki, Matsubara, Yutaka, Miyazaki, Shota, Muraki, Yasushi, Nagai, Tutumi, NUNOTA, Kansuke, Olmschenk, Greg, Ranc, Clement, Rattenbury, Nicholas J., Satoh, Yuki K., Sumi, Takahiro, Suzuki, Daisuke, Tristram, Paul . J., Vandorou, Aikaterini, Yama, Hibiki, Wyrzykowski, Lukasz, Howil, Kornel, Kruszyńska, Katarzyna
In the pursuit of understanding the population of stellar remnants within the Milky Way, we analyze the sample of $\sim 950$ microlensing events observed by the Spitzer Space Telescope between 2014 and 2019. In this study we focus on a sub-sample of
Externí odkaz:
http://arxiv.org/abs/2407.13740
Autor:
Iwanek, P., Soszyński, I., Stępień, K., Kozłowski, S., Skowron, J., Udalski, A., Szymański, M. K., Wrona, M., Pietrukowicz, P., Poleski, R., Mróz, P., Ulaczyk, K., Skowron, D. M., Gromadzki, M., Rybicki, K., Mróz, M. J., Ratajczak, M.
Stellar rotation, a key factor influencing stellar structure and evolution, also drives magnetic activity, which is manifested as spots or flares on stellar surface. Here, we present a collection of 18 443 rotating variables located toward the Galact
Externí odkaz:
http://arxiv.org/abs/2406.18728
Autor:
Munoz-Sanchez, G., de Wit, S., Bonanos, A. Z., Antoniadis, K., Boutsia, K., Boumis, P., Christodoulou, E., Kalitsounaki, M., Udalski, A.
This study delves into [W60] B90, one of the most luminous and extreme Red Supergiants (RSGs) in the Large Magellanic Cloud (LMC), aiming to search for evidence of episodic mass loss. Our discovery of a bar-like nebular structure at 1 pc, reminiscent
Externí odkaz:
http://arxiv.org/abs/2405.11019
Autor:
Han, Cheongho, Bond, Ian A., Udalski, Andrzej, Lee, Chung-Uk, Gould, Andrew, Albrow, Michael D., Chung, Sun-Ju, Hwang, Kyu-Ha, Jung, Youn Kil, Ryu, Yoon-Hyun, Shvartzvald, Yossi, Shin, In-Gu, Yee, Jennifer C., Yang, Hongjing, Zang, Weicheng, Cha, Sang-Mok, Kim, Doeon, Kim, Dong-Jin, Kim, Seung-Lee, Lee, Dong-Joo, Lee, Yongseok, Park, Byeong-Gon, Pogge, Richard W., Abe, Fumio, Bando, Ken, Barry, Richard, Bennett, David P., Bhattacharya, Aparna, Fujii, Hirosame, Fukui, Akihiko, Hamada, Ryusei, Hamada, Shunya, Hamasaki, Naoto, Hirao, Yuki, Silva, Stela Ishitani, Itow, Yoshitaka, Kirikawa, Rintaro, Koshimoto, Naoki, Matsubara, Yutaka, Miyazaki, Shota, Muraki, Yasushi, Nagai, Tutumi, Nunota, Kansuke, Olmschenk, Greg, Ranc, Clément, Rattenbury, Nicholas J., Satoh, Yuki, Sumi, Takahiro, Suzuki, Daisuke, Tomoyoshi, Mio, Tristram, Paul J., Vandorou, Aikaterini, Yama, Hibiki, Yamashita, Kansuke, Mróz, Przemek, Szymański, Michał K., Skowron, Jan, Poleski, Radosław, Soszyński, Igor, Pietrukowicz, Paweł, Kozłowski, Szymon, Rybicki, Krzysztof A., Iwanek, Patryk, Ulaczyk, Krzysztof, Wrona, Marcin, Gromadzki, Mariusz, Mróz, Mateusz J.
We investigate the nature of the short-term anomaly that appears in the lensing light curve of KMT-2023-BLG-1866. The anomaly was only partly covered due to its short duration, less than a day, coupled with cloudy weather conditions and restricted ni
Externí odkaz:
http://arxiv.org/abs/2405.07514
Autor:
Borowicz, J., Pietrukowicz, P., Skowron, J., Soszyński, I., Udalski, A., Szymański, M. K., Ulaczyk, K., Poleski, R., Kozłowski, S., Mróz, P., Skowron, D. M., Rybicki, K., Iwanek, P., Wrona, M., Gromadzki, M., Mróz, M. J.
Publikováno v:
Acta Astronomica, Vol. 73 (2023), No. 4, pp. 265-290
In this work, we search the OGLE-IV outer Galactic bulge fields for short-period variable objects. The investigation focuses on unexplored timescales roughly below one hour in an area containing about 700 million stellar sources down to approximately
Externí odkaz:
http://arxiv.org/abs/2404.17715
Autor:
Pietrukowicz, P., Latour, M., Soszynski, I., Di Mille, F., King, P. Soto, Angeloni, R., Poleski, R., Udalski, A., Szymanski, M. K., Ulaczyk, K., Kozlowski, S., Skowron, J., Skowron, D. M., Mroz, P., Rybicki, K., Iwanek, P., Wrona, M., Gromadzki, M.
Blue Large-Amplitude Pulsators (BLAPs) are a recently discovered class of short-period pulsating variable stars. In this work, we present new information on these stars based on photometric and spectroscopic data obtained for known and new objects de
Externí odkaz:
http://arxiv.org/abs/2404.16089
Autor:
Hu, Zhecheng, Zhu, Wei, Gould, Andrew, Udalski, Andrzej, Sumi, Takahiro, Chen, Ping, Novati, Sebastiano Calchi, Yee, Jennifer C., Beichman, Charles A., Bryden, Geoffery, Carey, Sean, Fausnaugh, Michael, Gaudi, B. Scott, Henderson, Calen B., Shvartzvald, Yossi, Wibking, Benjamin, Mróz, Przemek, Skowron, Jan, Poleski, Radosław, Szymański, Michał K., Soszyński, Igor, Pietrukowicz, Paweł, Kozłowski, Szymon, Ulaczyk, Krzysztof, Rybicki, Krzysztof A., Iwanek, Patryk, Wrona, Marcin, Gromadzki, Mariusz, Abe, Fumio, Barry, Richard, Bennett, David P., Bhattacharya, Aparna, Bond, Ian A., Fujii, Hirosane, Fukui, Akihiko, Hamada, Ryusei, Hirao, Yuki, Silva, Stela Ishitani, Itow, Yoshitaka, Kirikawa, Rintaro, Koshimoto, Naoki, Matsubara, Yutaka, Miyazaki, Shota, Muraki, Yasushi, Olmschenk, Greg, Ranc, Clément, Rattenbury, Nicholas J., Satoh, Yuki, Suzuki, Daisuke, Tomoyoshi, Mio, Tristram, Paul. J., Vandorou, Aikaterini, Yama, Hibiki, Yamashita, Kansuke
We present the analysis of the microlensing event OGLE-2015-BLG-0845, which was affected by both the microlensing parallax and xallarap effects. The former was detected via the simultaneous observations from the ground and Spitzer, and the latter was
Externí odkaz:
http://arxiv.org/abs/2404.13031