SIMBAD references

2018MNRAS.473.2853R - Mon. Not. R. Astron. Soc., 473, 2853-2870 (2018)

A deep near-infrared spectroscopic survey of the Scutum-Crux arm for Wolf-Rayet stars.


Abstract (from CDS):

We present a New Technology Telescope/Son-of-Isaac spectroscopic survey of infrared selected Wolf-Rayet (WR) candidates in the Scutum-Crux spiral arm (298° <= l <= 340°, |b| <= 0.5). We obtained near-IR spectra of 127 candidates, revealing 17 WR stars - a ∼13 per cent success rate - of which 16 are newly identified here. The majority of the new WR stars are classified as narrow-lined WN5-7 stars, with two broad-lined WN4-6 stars and three WC6-8 stars. The new stars, with distances estimated from previous absolute magnitude calibrations, have no obvious association with the Scutum-Crux arm. Refined near-infrared (YHJK) classification criteria based on over a hundred Galactic and Magellanic Cloud WR stars, providing diagnostics for hydrogen in WN stars, plus the identification of WO stars and intermediate WN/C stars. Finally, we find that only a quarter of WR stars in the survey region are associated with star clusters and/or H II regions, with similar statistics found for luminous blue variables (LBVs) in the Milky Way. The relative isolation of evolved massive stars is discussed, together with the significance of the co-location of LBVs and WR stars in young star clusters.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: emission-line, Be - stars: evolution - stars: Wolf-Rayet - Galaxy: stellar content - infrared: stars

Nomenclature: Table B1: [RC2018] ANNN N=11+94+16+2+4 among (Nos A1-A13, B3-B157, C3-C46, D1-D2, E1-E4).

Status at CDS : Acronym for new objects described in the dictionary of nomenclature and being created in SIMBAD. // Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 193

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