Wiliems [Williams], Thomas (b. 1545/6?, d. in or before 1623?), Welsh lexicographer

Williams, John

doi:10.1093/ref:odnb/29549

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…NSV 11749 is a little-studied variable star that was discovered by Luyten (1937) in the course of his Bruce Proper Motion Survey, and was originally designated AN 799.1936 Aquilae. As recounted by Williams (2005), Luyten found NSV 11749 to have had blue magnitudes of 13.5 and 17 on plates taken in 1903 and 1934, respectively. Unfortunately, Luyten never published a finding chart, and the coordinates that he provided were only approximate.…”

Section: Nsv 11749mentioning

confidence: 94%

“…Unfortunately, Luyten never published a finding chart, and the coordinates that he provided were only approximate. Williams (2005), however, was able to recover NSV 11749 on plates in the Harvard collection, including the Bruce plate pair on which Luyten had marked the variable. Williams gave improved coordinates, as well as a light curve based on 175 Harvard plates obtained between 1888 and 1988.…”

Section: Nsv 11749mentioning

confidence: 96%

See 1 more Smart Citation

NSV 11749: Symbiotic Nova, Not a Born-Again Red Giant

Bond

Kasliwal

2012

Publications of the Astronomical Society of the Pacific

View full text Add to dashboard Cite

NSV 11749 is a little-studied variable star, discovered by W. J. Luyten, which had a long-duration outburst around the year 1903, reaching blue magnitude 12.5 at maximum. Following the outburst, it has apparently been quiescent at about blue magnitude 17 for the past century. It was recently suggested that NSV 11749 may have been a low- or intermediate-mass star that underwent a final helium shell flash, making it temporarily a "born-again" red giant. If so, it would be only the fourth known member of this class, along with V605 Aql, FG Sge, and V4334 Sgr. However, our newly obtained optical and near-IR spectra of the object show that it is instead a symbiotic binary, with strong Balmer and He I-II emission lines, combined with a cool red-giant companion of spectral type M1-2 III. The 1903 outburst was most likely a symbiotic nova event, of which less than a dozen are known at present.Comment: 13 pages, 3 figures, Accepted for publication in PAS

show abstract

Section: Nsv 11749mentioning

confidence: 94%

Section: Nsv 11749mentioning

confidence: 96%