Seo-Won Chang discovered a new Blue Large Amplitude Pulsator star, SMSS-BLAP-1, in SkyMapper data. The study found an exceptionally low He abundance in SMSS-BLAP-1, which makes this object more similar to hot subdwarfs. May it be a transition object? academic.oup.com/mnras/article/…
"Hot subdwarf stars observed in #GaiaDR2 and LAMOST DR5" arxiv.org/abs/1906.09393 "He-rich hot subdwarfs [hSDs] with log(y)≥0 are from He WD mergers, He-deficient hSDs with −2.2≤log(y)<−1 from CE ejection, and He-deficient hSDs with log(y)<−2.2 from stable RLOF channels"
Chinese scientists have identified 222 hot subdwarf stars using DR8 spectra of its leading telescope Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST), incl. a system of the highest eccentricity among known wide sdB binaries
A new publication, by Dr Julieta Sanchez (AsU CZ), on three B-type supergiant stars confronts seismic, stellar interior, and spectral models with observations to reveal the evolutionary states of the stars.
More info: astroserver.org/M1DE05/
"Astroserver": freelancing for professional astronomers — not sure how I feel about this, but interesting at the least. Cf @ScienceBetter too. astroserver.org
"New hot subdwarf stars identified in #GaiaDR2 with LAMOST DR5 spectra" arxiv.org/abs/1810.09625 "We identified 294 hot subdwarf stars, including 169 sdB, 63 sdOB, 31 He-sdOB, 22 sdO, 7 He-sdO and 2 He-sdB stars" #GaiaMission
Preparing for next week in Paris!
See you at the Radiative Signatures from the Cosmos Meeting.
A conference in honor of Ivan Hubeny.
radcosmos.sciencesconf.org#radcosmos
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