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Following the recent discovery of a new class of pulsating star, the blue large-amplitude pulsators (BLAPs), pulsation stability analysis was carried out on evolutionary models of post-common envelope (CE) ejection stars of 0.3 and 0.46…

Solar and Stellar Astrophysics · Physics 2018-11-28 Conor Byrne , Simon Jeffery

Blue large-amplitude pulsators (BLAPs) are a recently discovered group of hot pulsating stars whose evolutionary status remains uncertain. Their supposed progenitors are either $\simeq 0.3M_{\odot}$ shell H-burning stars or $\simeq…

Solar and Stellar Astrophysics · Physics 2025-12-16 Susmita Das , Daniel Jadlovský , László Molnár

The Blue Large-Amplitude Pulsators (BLAPs) constitute a new class of pulsating stars. They are hot stars with effective temperatures of ~30 000 K and surface gravities of log g ~ 4.9, that pulsate with periods in the range 20-40 min. Until…

Solar and Stellar Astrophysics · Physics 2018-04-11 Alejandra D. Romero , A. H. Córsico , L. G. Althaus , I. Pelisoli , S. O. Kepler

Blue Large-Amplitude Pulsators (BLAPs) are a recently discovered class of pulsating star, believed to be proto-white dwarfs, produced by mass stripping of a red giant when it has a small helium core. An outstanding question is why the stars…

Solar and Stellar Astrophysics · Physics 2021-08-02 C. M. Byrne , E. R. Stanway , J. J. Eldridge

The Blue Large-Amplitude Pulsators (BLAPs) constitute a new class of pulsating stars. They are hot stars with effective temperatures of $T_{\rm eff}\sim 30\,000$ K and surface gravities of $\log g \sim 4.9$, that pulsate with periods in the…

Solar and Stellar Astrophysics · Physics 2018-09-21 Alejandro H. Córsico , Alejandra D. Romero , Leandro G. Althaus , Ingrid Pelisoli , S. O. Kepler

Blue large-amplitude pulsators (BLAPs) are hot low-mass stars which show large-amplitude light variations likely due to radial oscillations driven by iron-group opacities. Period changes provide evidence of both secular contraction and…

Solar and Stellar Astrophysics · Physics 2023-11-15 Xianfei Zhang , C. Simon Jeffery , Jie Su , Shaolan Bi

Blue large-amplitude pulsators (BLAPs) are a newly discovered type of variable star. Their typical pulsation periods are on the order of a few tens of minutes, with relatively large amplitudes of 0.2-0.4 mag in optical bands, and their…

Solar and Stellar Astrophysics · Physics 2022-12-14 H. Xiong , L. Casagrande , X. Chen , J. Vos , X. Zhang , S. Justham , J. Li , T. Wu , Y. Li , Z. Han

The recent discovery of large-amplitude pulsations in faint blue stars (BLAPs) provides both challenges for stellar pulsation theory and opportunities to explore the late evolution of low-mass stars. This paper explores the radial-mode…

Solar and Stellar Astrophysics · Physics 2025-03-10 C. S. Jeffery

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…

Blue Large-Amplitude Pulsators (BLAPs) represent a recently identified class of pulsating stars distinguished by their short pulsation periods ($2 - 60$ minutes) and asymmetric light curves. This study investigated the evolutionary channel…

Solar and Stellar Astrophysics · Physics 2025-05-21 Zhengyang Zhang , Chengyuan Wu , Xianfei Zhang , Zhanwen Han , Bo Wang

Blue large-amplitude pulsators (BLAPs) are a recently discovered group of hot stars pulsating in radial modes. Their origin needs to be explained, and several scenarios for their formation have already been proposed. We investigate whether…

Solar and Stellar Astrophysics · Physics 2024-10-02 Piotr A. Kołaczek-Szymański , Andrzej Pigulski , Piotr Łojko

\textbf{B}lue \textbf{L}arge \textbf{A}mplitude \textbf{P}ulsators (BLAPs) are a type of variable star that has been identified relatively recently. They are characterized by their large amplitude, high gravity, and long periods (2-75…

Solar and Stellar Astrophysics · Physics 2025-10-28 Tao Wu , Yan Li

Following the discovery of blue large-amplitude pulsators (BLAPs) by the OGLE survey, additional hot, high-amplitude pulsating stars have been discovered by the Zwicky Transient Facility. It has been proposed that all of these objects are…

Solar and Stellar Astrophysics · Physics 2019-12-11 Conor M. Byrne , C. Simon Jeffery

Blue Large-Amplitude Pulsators (BLAPs) are a class of radially pulsating stars with effective temperatures ranging from 20,000 to 35,000 K and pulsation periods between 7 and 75 minutes. This study utilizes the Binary Population and…

Solar and Stellar Astrophysics · Physics 2025-09-29 Zhengyang Zhang , Conor M. Byrne , Chengyuan Wu , Bo Wang

Blue large-amplitude pulsators (BLAPs) make up a rare class of hot pulsating stars with effective temperatures of $\approx$30,000 K and surface gravities of 4.0 - 5.0 dex (cgs). The evolutionary origin and current status of BLAPs is not…

Solar and Stellar Astrophysics · Physics 2023-12-13 Corey W. Bradshaw , Matti Dorsch , Thomas Kupfer , Brad N. Barlow , Uli Heber , Evan B. Bauer , Lars Bildsten , Jan van Roestel

Blue large-amplitude pulsators (BLAPs) are a newly discovered group of compact pulsating stars whose origin needs to be explained. Of the existing evolutionary scenarios that could lead to the formation of BLAPs, there are two in which…

Solar and Stellar Astrophysics · Physics 2024-11-27 Andrzej Pigulski , Piotr A. Kołaczek-Szymański , Marta Święch , Piotr Łojko , Kacper J. Kowalski

Blue large-amplitude pulsators (BLAPs) form a small group of hot objects pulsating in a fundamental radial mode with periods of the order of 30 minutes. Proposed evolutionary scenarios explain them as evolved low-mass stars: either ~0.3…

Solar and Stellar Astrophysics · Physics 2022-07-13 A. Pigulski , K. Kotysz , P. A. Kolaczek-Szymanski

We present the properties of the recently discovered class of variable stars, Blue Large-Amplitude Pulsators (BLAPs). These extremely rare, short-period pulsating objects were detected thanks to regular, high-cadence observations of…

Solar and Stellar Astrophysics · Physics 2018-02-14 Pawel Pietrukowicz

Blue large-amplitude pulsators (BLAPs) represent a new and rare class of hot pulsating stars with unusually large amplitudes and short periods. Up to now, only 24 confirmed BLAPs have been identified from more than one billion monitored…

Blue Large Amplitude Pulsators (BLAPs) are a relatively new class of blue variable stars showing periodic variations in their light curves with periods shorter than a few tens of mins and amplitudes of more than ten percent. We report nine…

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