Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Andrzej S. Baran"'
Variable Blue Straggler Stars in the Open Cluster NGC 6819 Observed in the Kepler 'Superstamp' Field
Autor:
Joyce A. Guzik, Andrzej S. Baran, Sachu Sanjayan, Péter Németh, Anne M. Hedlund, Jason Jackiewicz, Lori R. Dauelsberg
Publikováno v:
The Astronomical Journal, Vol 165, Iss 5, p 188 (2023)
NGC 6819 is an open cluster of age 2.4 Gyr that was in the NASA Kepler spacecraft’s field of view from 2009 to 2013. The central part of the cluster was observed in a 200 × 200 pixel “superstamp” during these four years in 30 minute cadence ph
Externí odkaz:
https://doaj.org/article/26b1741018a641c29e92edfb84713197
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 8 (2021)
Externí odkaz:
https://doaj.org/article/c0772ef0cfc443658196f1f303b89d67
Autor:
Joyce A. Guzik, Andrzej S. Baran, Sachu Sanjayan, Péter Németh, Anne M. Hedlund, Jason Jackiewicz, Lori R. Dauelsberg
NGC 6819 is an open cluster of age 2.4 Gyr that was in the NASA Kepler spacecraft field of view from 2009 to 2013. The central part of the cluster was observed in a 200 x 200 pixel `superstamp' during these four years in 30-minute cadence photometry,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1c9c449c59bb5d0b01b04b5c0e3d54e
http://arxiv.org/abs/2303.01581
http://arxiv.org/abs/2303.01581
Autor:
Roberto Silvotti, Péter Németh, John H Telting, Andrzej S Baran, Roy H Østensen, Jakub Ostrowski, Sumanta K Sahoo, Saskia Prins
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 511:2201-2217
TIC137608661/TYC4544-2658-1/FBS0938+788 is a new sdBV+dM reflection-effect binary discovered by the TESS space mission with an orbital period of 7.21 hours. In addition to the orbital frequency and its harmonics, the Fourier transform of TIC137608661
Autor:
Andrzej S. Baran, Michael D. Reed, Murat Uzundag, Roy Ostensen, Sumanta K. Sahoo, J. H. Telting, C. S. Jeffery, K. A. Shoaf, P. Nemeth, J. Vos
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 493:5162-5169
Transiting Exoplanet Survey Satellite (TESS) observations show CD−28° 1974 to be a gravity(g)-mode-dominated hybrid pulsating subdwarf B (sdBV) star. It shows 13 secure periods that form an ℓ = 1 asymptotic sequence near the typical period spaci
Autor:
J. Vos, A. Slayton, C. S. Jeffery, Roy Ostensen, Michael D. Reed, J. H. Telting, M. Yeager, Andrzej S. Baran
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 492:5202-5217
We processed and analysed K2 observations of the pulsating subdwarf-B (sdBV) stars UY Sex and V1405 Ori. We detect 97 p-mode pulsations in UY Sex while we discover V1405 Ori to be a rare rich hybrid pulsator with over 100 p-mode pulsations and 19 g-m
Autor:
M. Vučković, Michael D. Reed, Sumanta K. Sahoo, Roberto Silvotti, Roy Ostensen, Péter Németh, John H. Telting, K. A. Shoaf, Andrzej S. Baran, Miller Bertolami, Murat Uzundag
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
We present photometric and spectroscopic analyses of gravity (g-mode) long-period pulsating hot subdwarf B (sdB) stars. We perform a detailed asteroseismic and spectroscopic analysis of five pulsating sdB stars observed with {\it TESS} aiming at the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a3378005cbb1d98ab6d4d8cfb508f261
https://www.aanda.org/10.1051/0004-6361/202140961
https://www.aanda.org/10.1051/0004-6361/202140961
Autor:
Jakub Ostrowski, Andrzej S. Baran, J. H. Telting, Andreas Irrgang, Roy Ostensen, S Sanjayan, U. Heber, Michael D. Reed
We present an overview of eclipsing systems of the HW-Virginis type, based on space observations from the TESS Mission. We perform a detailed analysis of the properties of AA Dor, which was monitored for almost a full year. This excellent time-series
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b8bb6e078c06b3703a33cc7e655f6d1
http://arxiv.org/abs/2105.01074
http://arxiv.org/abs/2105.01074
Autor:
Roy Ostensen, J. H. Telting, S. Sanjayan, Michael D. Reed, Andrzej S. Baran, A. Slayton, Murat Uzundag, C. S. Jeffery
We report the discovery of four new pulsating subdwarf B (sdBV) stars from Campaign 7 of the Kepler spacecraft's K2 mission. EPICs 215776487, 217280630, 218366972, and 218717602 are all gravity (g)-mode pulsators and we also detect two pressure (p)-m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c6a5c7621058c8e12ab97c4b4535c6c
Autor:
Marek Drozdz, Diana P. Kjurkchieva, Slavek M. Rucinski, Michal Siwak, Dorota Kozieł-Wierzbowska, Ahmet Erdem, G. Stachowski, Andrzej S. Baran, Waldemar Ogloza, Dragomir Marchev, B. Zakrzewski, S. Szalankiewicz, Kosmas Gazeas, Alexios Liakos, Stanisław Zoła, J. M. Kreiner
This paper presents the results of a combined spectroscopic and photometric study of 20 contact binary systems: HV Aqr, OO Aql, FI Boo, TX Cnc, OT Cnc, EE Cet, RWCom, KR Com, V401 Cyg, V345 Gem, AK Her, V502 Oph, V566 Oph, V2612 Oph, V1363 Ori, V351
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60e8ea5ccfaa03d81981feb6e06f4196