We have discovered a $δ$ Scuti pulsator in a tight binary (P = 1.053 d) with nine pulsation modes whose frequencies are between 38 and 56 d$^{-1}$. Each of these modes exhibits amplitude modulations and $π$-rad phase shifts twice per orbital cycle. Five of these modes exhibit amplitude and phase shifts that are readily explained by dipole pulsations along an axis that is aligned with the binary's tidal axis. The novelty of the system lies in the remaining four pulsation modes, which we show are dipole pulsations along an axis that is perpendicular to both the tidal axis and the binary's orbital angular momentum axis. There are additionally two pulsation modes whose amplitudes and phases do not change significantly with orbital phase; they are explained as dipole modes along an axis aligned with the orbital/rotation axis. Hence, we propose that TIC 184743498 is a tri-axial pulsator, the first of its kind.
TIC 435850195: The Second Tri-Axial, Tidally Tilted Pulsator
Massachusetts Institute of Technology(麻省理工学院);NASA Goddard Space Flight Center(美国宇航局戈达德太空飞行中心);Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences(波兰科学院尼古拉·哥白尼天文学中心);SETI Institute(搜寻地外文明研究所);California Institute of Technology(加州理工学院);North-West University(西北大学);University of Central Lancashire(中央兰开夏大学);Phillips Academy(菲利普斯学院)
First and Comprehensive Study of V0757 Pup : $γ-$Doradus Pulsator in Detached Eclipsing Binary
The Graduate University for Advanced Studies, SOKENDAI(高级研究大学院大学);National Astronomical Observatory of Japan(日本国立天文台);Tsung-Dao Lee Institute & School of Physics and Astronomy, Shanghai Jiao Tong University(上海交通大学物理与天文学院及致果书院);Institut Teknologi Bandung(万隆理工学院)
TIC 295741342: A Triply-Eclipsing Triple Star System with a Giant Tertiary
NASA Goddard Space Flight Center(NASA戈达德太空飞行中心);SETI Institute(地外文明研究所);Department of Physics, Kavli Institute for Astrophysics and Space Research, M.I.T.(麻省理工学院物理系、卡弗里天体物理学与空间研究研究所);Baja Astronomical Observatory of University of Szeged(塞格德大学巴亚天文台);HUN-REN – SZTE Stellar Astrophysics Research Group(匈牙利研究与教育网络-塞格德大学恒星天体物理学研究组);Konkoly Observatory, Research Centre for Astronomy and Earth Sciences(孔科利天文台,地球科学研究中心)
Filling the gap between synchronized and non-synchronized sdBs in short-period sdBV+dM binaries with TESS: TIC 137608661, a new system with a well defined rotational splitting
New theoretical instability regions, period-luminosity relations and masses for blue large-amplitude pulsators
Inter-University Center for Astronomy and Astrophysics(天文与天体物理大学间中心);Konkoly Observatory, HUN-REN Research Centre for Astronomy and Earth Sciences(孔科利天文台,匈牙利研究网络天文学与地球科学研究中心);Masaryk University(马萨里克大学)
TIC 366240660 - A Dynamically Active Triple With a Very Short Outer Period of 30.5 Days
HUN–REN–SZTE Stellar Astrophysics Research Group(匈牙利科学院-塞格德大学恒星天体物理学研究组);Department of Physics, Kavli Institute for Astrophysics and Space Research, M.I.T.(麻省理工学院物理系卡弗里天体物理学与空间研究研究所);Baja Astronomical Observatory of University of Szeged(塞格德大学巴亚天文台);Konkoly Observatory, Research Centre for Astronomy and Earth Sciences(孔科利天文台,地球科学研究中心);Center for Astrophysics, Harvard & Smithsonian(哈佛-史密森尼天体物理中心);International Centre of Supernovae (ICESUN), Yunnan Key Laboratory of Supernova Research, Yunnan Observatories, Chinese Academy of Sciences (CAS)(中国科学院云南天文台超新星国际研究中心(ICESUN)云南省超新星研究重点实验室);Astronomical Institute, Faculty of Mathematics and Physics, Charles University(查理大学数学与物理学院天文研究所);FZU - Institute of Physics of the Czech Academy of Sciences(捷克科学院物理研究所)
TESS Observations of Seven Newly Identified High-amplitude $δ$ Scuti Stars
Xinjiang Astronomical Observatory, Chinese Academy of Sciences(中国科学院新疆天文台);School of Astronomy and Space Science, University of Chinese Academy of Sciences(中国科学院大学天文与空间科学学院);Centre for Fusion, Space and Astrophysics, Department of Physics, University of Warwick(华威大学物理系聚变、太空与天体物理中心);Institute of Geophysics, University of Tehran(德黑兰大学地球物理学研究所);Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences(中国科学院国家天文台光学天文重点实验室);Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi’an Jiaotong University(西安交通大学物理学院教育部非平衡合成与调控凝聚态物质重点实验室);Ulugh Beg Astronomical Institute, Uzbekistan Academy of Sciences(乌兹别克斯坦科学院乌鲁格别克天文研究所)
TIC 433545934: The first 2+2 type doubly eclipsing binary with extra, mutual eclipses
HUN–REN–SZTE Stellar Astrophysics Research Group(匈牙利科学院-罗兰大学恒星天体物理学研究组);Baja Astronomical Observatory of University of Szeged(塞格德大学巴亚天文台);Konkoly Observatory, Research Centre for Astronomy and Earth Sciences(孔科利天文台,地球与天文学研究中心);Department of Physics, Kavli Institute for Astrophysics and Space Research, M.I.T.(麻省理工学院物理系,卡弗里天体物理学与空间研究研究所);Astronomical Institute, Faculty of Mathematics and Physics, Charles University(查理大学数学与物理学院天文研究所);FZU - Institute of Physics of the Czech Academy of Sciences(捷克科学院物理研究所(FZU));Research Centre for Theoretical Physics and Astrophysics, Institute of Physics, Silesian University in Opava(奥帕瓦西里西亚大学物理研究所理论物理与天体物理学研究中心);Astronomical Institute, Academy of Sciences(科学院天文研究所);Department of Experimental Physics, University of Szeged(塞格德大学实验物理系)
V446 Cephei: a $β$ Cep pulsator in a multiple system
Keele University(基尔大学);University of Zagreb(萨格勒布大学);Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences(波兰科学院尼古拉·哥白尼天文学中心);Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange(蔚蓝海岸大学,蔚蓝海岸天文台,法国国家科学研究中心,拉格朗日实验室);Newcastle University(纽卡斯尔大学);KU Leuven(荷语鲁汶大学);Villanova University(维拉诺瓦大学)
Rossby numbers and stiffness values inferred from gravity-mode asteroseismology of rotating F- and B-type dwarfs: consequences for mixing, transport, magnetism, and convective penetration
Discovery of the First Octupole Pulsation Mode in a delta Scuti Star: A Stationary l = 3 Sectoral Mode
HUN–REN–SZTE Stellar Astrophysics Research Group(匈牙利科学院-塞格德大学恒星天体物理学研究组);Department of Physics, Kavli Institute for Astrophysics and Space Research, M.I.T.(麻省理工学院物理系卡弗里天体物理学与空间研究研究所);Department of Astronomy, Cornell University(康奈尔大学天文学系);Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences(波兰科学院尼古拉·哥白尼天文中心);Centre for Space Research, North-West University(西北大学太空研究中心);Jeremiah Horrocks Institute, University of Lancashire(兰开夏大学杰里迈亚·霍克斯研究所);Harvard University(哈佛大学);NASA Goddard Space Flight Center(美国国家航空航天局戈达德太空飞行中心);TAPIR, Mailcode 350-17, California Institute of Technology(加州理工学院TAPIR(邮件代码350-17));Baja Astronomical Observatory of University of Szeged(塞格德大学巴亚天文台);Konkoly Observatory, Research Centre for Astronomy and Earth Sciences(匈牙利科学院地球科学研究中心孔科利天文台);ELTE Eötvös Loránd University, Gothard Astrophysical Observatory(罗兰大学哥塔德天体物理观测站)