SIMBAD references

2012AJ....143..136L - Astron. J., 143, 136 (2012/June-0)

Discovery of a Wolf-Rayet star through detection of its photometric variability.

LITTLEFIELD C., GARNAVICH P., MARION G.H.H., VINKO J., McCLELLAND C., RETTIG T. and WHEELER J.C.

Abstract (from CDS):

We report the serendipitous discovery of a heavily reddened Wolf-Rayet star that we name WR 142b. While photometrically monitoring a cataclysmic variable, we detected weak variability in a nearby field star. Low-resolution spectroscopy revealed a strong emission line at 7100 Å, suggesting an unusual object and prompting further study. A spectrum taken with the Hobby-Eberly Telescope confirms strong He II emission and an N IV 7112 Å line consistent with a nitrogen-rich Wolf-Rayet star of spectral class WN6. Analysis of the He II line strengths reveals no detectable hydrogen in WR 142b. A blue-sensitive spectrum obtained with the Large Binocular Telescope shows no evidence for a hot companion star. The continuum shape and emission line ratios imply a reddening of E(B - V) = 2.2-2.6 mag. We estimate that the distance to WR 142b is 1.4±0.3 kpc.

Abstract Copyright:

Journal keyword(s): stars: individual (HBHa4203-27, WR142b) - stars: Wolf-Rayet

CDS comments: The source G081.5744+02.9135 from Egan et al. 2003 is not Simbad. The stars A, C, D, E, F, G, X, and Y are not in Simbad.

Simbad objects: 6

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