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The Far-away Blues: Exploring the Furthest Extents of the Boötes I Ultra-faint Dwarf Galaxy
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W. Cerny, A. B. Pace, A. Drlica-Wagner, S. E. Koposov, A. K. Vivas, S. Mau, A. H. Riley, C. R. Bom, J. L. Carlin, Y. Choi, D. Erkal, P. S. Ferguson, D. J. James, T. S. Li, D. Martínez-Delgado, C. E. Martínez-Vázquez, R. R. Munoz, B. Mutlu-Pakdil, K. A. G. Olsen, A. Pieres, J. D. Sakowska, D. J. Sand, J. D. Simon, A. Smercina, G. S. Stringfellow, et al. The Astrophysical Journal Letters 920(2) L44 (2021) https://doi.org/10.3847/2041-8213/ac2d9a
Identifying low-amplitude pulsating stars through microlensing observations
Sedighe Sajadian, Richard Ignace and Hilding Neilson Monthly Notices of the Royal Astronomical Society 507(4) 5177 (2021) https://doi.org/10.1093/mnras/stab2410
Variability, periodicity, and contact binaries in WISE
Evan Petrosky, Hsiang-Chih Hwang, Nadia L Zakamska, Vedant Chandra and Matthew J Hill Monthly Notices of the Royal Astronomical Society 503(3) 3975 (2021) https://doi.org/10.1093/mnras/stab592
Revealing the Structure and Internal Rotation of the Sagittarius Dwarf Spheroidal Galaxy with Gaia and Machine Learning
Andrés del Pino, Mark A. Fardal, Roeland P. van der Marel, Ewa L. Łokas, Cecilia Mateu and Sangmo Tony Sohn The Astrophysical Journal 908(2) 244 (2021) https://doi.org/10.3847/1538-4357/abd5bf
Cepheid metallicity in the Leavitt law (C-metall) survey – I. HARPS-N@TNG spectroscopy of 47 classical Cepheids and 1 BL Her variables
Blueshifted Hydrogen Emission and Shock Wave of RR Lyrae Variables in SDSS and LAMOST
Xiao-Wei 晓苇 Duan 段, Xiaodian 孝钿 Chen 陈, Weijia 唯佳 Sun 孙, Licai 李才 Deng 邓, Huawei 华伟 Zhang 张, Fan 帆 Yang 杨 and Chao 超 Liu 刘 The Astrophysical Journal 918(1) 3 (2021) https://doi.org/10.3847/1538-4357/ac174a
Chromospheric Activity of Periodic Variable Stars Based on the LAMOST Low- and Medium-resolution Spectral Survey
Liu Long, Li-yun Zhang, Shao-Lan Bi, Jianrong Shi, Hong-Peng Lu, Xianming L. Han, Haifeng Wang and Misra Prabhakar The Astrophysical Journal Supplement Series 253(2) 51 (2021) https://doi.org/10.3847/1538-4365/abe30b
Chemo-kinematics of the Gaia RR Lyrae: the halo and the disc
Orbital phase-driven biases in galactic mass constraints from stellar streams
Stella Reino, Robyn E Sanderson, Nondh Panithanpaisal, Elena M Rossi and Konrad Kuijken Monthly Notices of the Royal Astronomical Society 509(4) 5365 (2021) https://doi.org/10.1093/mnras/stab3176
Galactic open cluster Cepheids – a census based on Gaia EDR3
Kinematics and multiband period–luminosity–metallicity relation of RR Lyrae stars via statistical parallax
T D Muhie, A K Dambis, L N Berdnikov, A Y Kniazev and E K Grebel Monthly Notices of the Royal Astronomical Society 502(3) 4074 (2021) https://doi.org/10.1093/mnras/stab219
Stellar substructures in the periphery of the Magellanic Clouds with the VISTA hemisphere survey from the red clump and other tracers
Dalal El Youssoufi, Maria-Rosa L Cioni, Cameron P M Bell, et al. Monthly Notices of the Royal Astronomical Society 505(2) 2020 (2021) https://doi.org/10.1093/mnras/stab1075
Milky Way archaeology using RR Lyrae and type II Cepheids
A revisited study of Cepheids in open clusters in the Gaia era
Gustavo E Medina, Bertrand Lemasle and Eva K Grebel Monthly Notices of the Royal Astronomical Society 505(1) 1342 (2021) https://doi.org/10.1093/mnras/stab1267