A NEAR-INFRARED SURVEY OF THE INNER GALACTIC PLANE FOR WOLF-RAYET STARS. II. GOING FAINTER: 71 MORE NEW W-R STARS

@article{Shara2011ANS,
  title={A NEAR-INFRARED SURVEY OF THE INNER GALACTIC PLANE FOR WOLF-RAYET STARS. II. GOING FAINTER: 71 MORE NEW W-R STARS},
  author={Michael M. Shara and Jacqueline K. Faherty and David R. Zurek and Anthony F. J. Moffat and Jill R. Gerke and Ren{\'e} Doyon and {\'E}tienne Artigau and Laurent Drissen},
  journal={The Astronomical Journal},
  year={2011},
  volume={143}
}
We are continuing a J, K and narrowband imaging survey of 300 deg2 of the plane of the Galaxy, searching for new Wolf–Rayet (W-R) stars. Our survey spans 150° in Galactic longitude and reaches 1° above and below the Galactic plane. The survey has a useful limiting magnitude of K = 15 over most of the observed Galactic plane, and K = 14 (due to severe crowding) within a few degrees of the Galactic center. Thousands of emission-line candidates have been detected. In spectrographic follow-ups of… 

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References

SHOWING 1-10 OF 17 REFERENCES

A NEAR-INFRARED SURVEY OF THE INNER GALACTIC PLANE FOR WOLF–RAYET STARS. I. METHODS AND FIRST RESULTS: 41 NEW WR STARS

The discovery of new Wolf–Rayet (WR) stars in our Galaxy via large-scale narrowband optical surveys has been severely limited by dust extinction. Recent improvements in infrared technology have made

Searching for hidden Wolf–Rayet stars in the Galactic plane – 15 new Wolf–Rayet stars

We report the discovery of 15 previously unknown Wolf–Rayet (WR) stars found as part of an infrared (IR) broad-band study of candidate WR stars in the Galaxy. We have derived an empirically based

ISOLATED WOLF–RAYET STARS AND O SUPERGIANTS IN THE GALACTIC CENTER REGION IDENTIFIED VIA PASCHEN-α EXCESS

We report the discovery of 19 hot, evolved, massive stars near the Galactic center region (GCR). These objects were selected for spectroscopy owing to their detection as strong sources of Paschen-α

12 New Galactic Wolf-Rayet Stars Identified via 2MASS + Spitzer/GLIMPSE

We report new results from our effort to identify obscured Wolf-Rayet stars in the Galaxy. Candidates were selected by their near-infrared (Two Micron All Sky Survey; 2MASS) and mid-infrared

NEAR-INFRARED COUNTERPARTS TO CHANDRA X-RAY SOURCES TOWARD THE GALACTIC CENTER. II. DISCOVERY OF WOLF–RAYET STARS AND O SUPERGIANTS

We present new identifications of infrared counterparts to the population of hard X-ray sources near the Galactic center detected by the Chandra X-ray Observatory. We have spectroscopically confirmed

A census of the Wolf–Rayet content in Westerlund 1 from near-infrared imaging and spectroscopy

New NTT/SOFI imaging and spectroscopy of the Wolf-Rayet population in Westerlund 1 are presented. Narrow-band near-IR imaging together with follow up spectroscopy reveals four new Wolf-Rayet stars,

The VIIth catalogue of galactic Wolf–Rayet stars

The Distribution of Massive Stars in the Galaxy. I. The Wolf-Rayet Stars

Using spectroscopic parallax, the heliocentric and Galactocentric distances of nearly all of the 157 known Wolf-Rayet stars in the Galaxy were determined. Their distribution both within and

DISCOVERY OF TWIN WOLF-RAYET STARS POWERING DOUBLE RING NEBULAE

We have spectroscopically discovered a pair of twin, nitrogen-type, hydrogen-rich, Wolf-Rayet stars (WN8–9h) that are both surrounded by circular, mid-infrared-bright nebulae detected with the

The Wolf-Rayet Content of M33

Wolf-Rayet (WR) stars are evolved massive stars, and the relative number of WC-type and WN-type WRs should vary with metallicity, providing a sensitive test of stellar evolutionary theory. The