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2021RNAAS...5..131M - Research Notes of the AAS, 5, 131 (2021/June-0)

Time-resolved Low-resolution Spectra of BLAP-009 and BLAP-014.

McWHIRTER P.R. and LAM M.C.

Abstract (from CDS):

We present time resolved low resolution spectra of BLAP-009 and BLAP-014 collected with SPRAT on the Liverpool Telescope. The spectra were median-stacked in four ranges of phase. It was intended to note the variation in the shape of the helium absorption lines as a function of phase, but they do not appear to vary with time in low resolution spectra. The lack of clear offsets in the absorption lines suggest that there can only be small radial velocity due to either unseen companion or rapid expansion/contraction of the envelope.

Abstract Copyright: © 2021. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Blue large-amplitude pulsators - Pulsating variable stars - Spectroscopy

Simbad objects: 4

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