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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) form a mysterious class of variable stars with typical periods of tens of minutes and amplitudes above 0.1 mag. In this work, we present results of a variability search focused on timescales shorter…

Blue Large-Amplitude Pulsators (BLAPs) are rare short-period ($\lesssim$80 min) pulsating variable stars exhibiting large-amplitude brightness variations (typically between 0.1 and 0.4 mag). As a recently discovered class of radial-mode…

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…

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…

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…

太阳与恒星天体物理 · 物理学 2018-09-21 Alejandro H. Córsico , Alejandra D. Romero , Leandro G. Althaus , Ingrid Pelisoli , S. O. Kepler

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…

Blue large-amplitude pulsators (BLAPs), a recently classified type of variable stars, are evolved objects likely formed through interactions between stars in a binary system. However, only two BLAPs with stellar companions have been…

太阳与恒星天体物理 · 物理学 2025-03-25 Seung-Lee Kim , Chung-Uk Lee , Kyeongsoo Hong , Jae Woo Lee , Dong-Jin Kim , Sang-Mok Cha , Yongseok Lee , Dong-Joo Lee , Byeong-Gon Park

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…

太阳与恒星天体物理 · 物理学 2018-04-11 Alejandra D. Romero , A. H. Córsico , L. G. Althaus , I. Pelisoli , S. O. Kepler

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…

太阳与恒星天体物理 · 物理学 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…

太阳与恒星天体物理 · 物理学 2024-11-27 Andrzej Pigulski , Piotr A. Kołaczek-Szymański , Marta Święch , Piotr Łojko , Kacper J. Kowalski

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…

太阳与恒星天体物理 · 物理学 2018-02-14 Pawel Pietrukowicz

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…

太阳与恒星天体物理 · 物理学 2025-12-16 Susmita Das , Daniel Jadlovský , László Molnár

Blue Large Amplitude Pulsators (BLAPs) are hot, subluminous stars undergoing rapid variability with periods of under 60 mins. They have been linked with the early stages of pre-white dwarfs and hot subdwarfs. They are a rare class of…

太阳与恒星天体物理 · 物理学 2022-02-09 Paul Ross McWhirter , Marco C. Lam

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…

太阳与恒星天体物理 · 物理学 2022-07-13 A. Pigulski , K. Kotysz , P. A. Kolaczek-Szymanski

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…

太阳与恒星天体物理 · 物理学 2022-12-14 H. Xiong , L. Casagrande , X. Chen , J. Vos , X. Zhang , S. Justham , J. Li , T. Wu , Y. Li , Z. Han

Blue Large Amplitude Pulsators (BLAPs) are blue stars showing high amplitude (>0.2 mag) pulsations on a timescale of a few tens of mins. They form a new class of variable star recently discovered using OGLE data. It has lead to a number of…

太阳与恒星天体物理 · 物理学 2018-12-12 Gavin Ramsay

We have obtained spectroscopic observations for four short-period variable objects detected in ZTF, Gaia, and Pan-STARRS (ZGP) data and classified as Blue Large-Amplitude Pulsators (BLAPs) in McWhirter and Lam (2022): ZGP-BLAP-03,…

太阳与恒星天体物理 · 物理学 2025-07-14 P. Pietrukowicz , M. Latour , F. Di Mille , M. Dorsch , U. Heber , J. Borowicz

\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…

太阳与恒星天体物理 · 物理学 2025-10-28 Tao Wu , Yan Li

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…

太阳与恒星天体物理 · 物理学 2025-05-21 Zhengyang Zhang , Chengyuan Wu , Xianfei Zhang , Zhanwen Han , Bo Wang
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