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GTC Follow-up Observations of Very Metal-Poor Star Candidates from DESI
Carlos Allende Prieto, David S. Aguado, Jonay I. González Hernández +48
The observations from the Dark Energy Spectroscopic Instrument (DESI) will significantly increase the numbers of known extremely metal-poor stars by a factor of ~ 10, improving the…
DAHe white dwarfs from the DESI survey
Christopher J. Manser, Boris T. Gänsicke, Keith Inight +16
A new class of white dwarfs, dubbed DAHe, that present Zeeman-split Balmer lines in emission has recently emerged. However, the physical origin of these emission lines remains uncl…
Frequent flare events on the short-period M-type eclipsing binary BX Tri
ChangQing Luo, XiaoBin. Zhang, Kun Wang +8
We present long-term, multi-color photometric monitoring and spectroscopic observations of the short-period M-type eclipsing binary BX Tri. Six flare events were recorded in 4 year…
A newly discovered stellar type: dusty post-red giant branch stars in the Magellanic Clouds
D. Kamath, P. R. Wood, H. Van Winckel +1
Context: We present a newly discovered class of low-luminosity, dusty, evolved objects in the Magellanic Clouds. These objects have dust excesses, stellar parameters, and spectral…
Photometry of Variable Stars from THU-NAOC Transient Survey I: The First 2 Years
Xinyu Yao, Lingzhi Wang, Xiaofeng Wang +9
In this paper, we report the detections of stellar variabilities from the first 2-year observations of sky area of about 1300 square degrees from the Tsinghua University-NAOC Trans…
Improved prospects for the detection of new Large Magellanic Cloud planetary nebulae
Brent Miszalski, Ralf Napiwotzki, Maria-Rosa L. Cioni +1
The Large Magellanic Cloud (LMC) contains the nearest large extragalactic population of planetary nebulae (PNe). A shallow viewing angle and low interstellar reddening towards the…