WISE morphological study of Wolf-Rayet nebulae

  title={WISE morphological study of Wolf-Rayet nebulae},
  author={Jes'us A. Toal'a and Mart{\'i}n A. Guerrero and Gerardo Ramos-Larios and Viviana V. Guzm'an},
  journal={arXiv: Solar and Stellar Astrophysics},
We present a morphological study of nebulae around Wolf-Rayet (WR) stars using archival narrow-band optical and Wide-field Infrared Survey Explorer (WISE) infrared images. The comparison among WISE images in different bands and optical images proves to be a very efficient procedure to identify the nebular emission from WR nebulae, and to disentangle it from that of the ISM material along the line of sight. In particular, WR nebulae are clearly detected in the WISE W4 band at 22 $\mu$m. Analysis… 

Dust in the Wolf–Rayet nebula M 1-67

The Wolf-Rayet nebula M1-67 around WR124 is located above the Galactic plane in a region mostly empty of interstellar medium, which makes it the perfect target to study the mass-loss episodes

Unveiling the stellar origin of the Wolf–Rayet nebula NGC 6888 through infrared observations

We present a comprehensive infrared (IR) study of the iconic Wolf-Rayet (WR) wind-blown bubble NGC6888 around WR136. We use Wide-field Infrared Survey Explorer (WISE), Spitzer IRAC and MIPS and

Stagnant Shells in the Vicinity of the Dusty Wolf–Rayet–OB Binary WR 112

We present high spatial resolution mid-infrared images of the nebula around the late-type carbon-rich Wolf–Rayet (WC)–OB binary system WR 112 taken by the recently upgraded VLT spectrometer and

On the bipolarity of Wolf–Rayet nebulae

  • D. Meyer
  • Physics
    Monthly Notices of the Royal Astronomical Society
  • 2021
Wolf–Rayet stars are amongst the rarest but also most intriguing massive stars. Their extreme stellar winds induce famous multiwavelength circumstellar gas nebulae of various morphologies, spanning

Dust in RCW 58: Clues to common envelope channel formation?

We present a characterization of the dust in the Wolf–Rayet (WR) nebula RCW 58 around the WN8h star WR 40 using archival infrared (IR) observations from WISE and Herschel and radio observations

X-ray emission from the Wolf–Rayet bubble NGC 6888 – II. XMM–Newton EPIC observations

We present deep XMM-Newton EPIC observations of the Wolf-Rayet (WR) bubble NGC6888 around the star WR136. The complete X-ray mapping of the nebula confirms the distribution of the hot gas in three

Analysis of the WN star WR 102c, its WR nebula, and the associated cluster of massive stars in the Sickle Nebula

The massive Wolf-Rayet type star WR 102c is located near the Quintuplet Cluster - one of the three massive star clusters in the Galactic Center region. Previous studies indicated that WR 102c may

On the ring nebulae around runaway Wolf–Rayet stars

Wolf-Rayet stars are advanced evolutionary stages of massive stars. Despite their large mass-loss rates and high wind velocities, none of them display a bow shock, although a fraction of them are

The ISM local to the runaway star WR16

Massive stars leave their imprint on the interstellar medium as they radiate their energy and undergo episodes of mass ejection throughout their lives. In this paper, we analyse the case of the

Infrared nebulae around bright massive stars as indicators for binary interactions

Context. Recent studies show that more than 70% of massive stars do not evolve as effectively single stars, but as members of interacting binary systems. The evolution of these stars is thus strongly



Ionization structure and chemical abundances of the Wolf-Rayet nebula NGC 6888 with integral field spectroscopy

Context. The study of nebulae around Wolf-Rayet (WR) stars gives us clues about the mass-loss history of massive stars, as well as about the chemical enrichment of the interstellar medium (ISM).


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 spectroscopic properties of the nebulae around seven Galactic and LMC Wolf–Rayet stars

We have obtained spectroscopic observations of the nebulae around seven Wolf–Rayet (WR) stars, four in the Milky Way (WR 8, 16, 18 and 40) and three in the Large Magellanic Cloud (LMC; BAT99-2, -11

A new Wolf―Rayet star and its circumstellar nebula in Aquila

We report the discovery of a new Wolf-Rayet star in Aquila via detection of its circumstellar nebula (reminiscent of ring nebulae associated with late WN stars) using the Spitzer Space Telescope

First Detections of Molecular Gas Associated with the Wolf-Rayet Ring Nebula NGC 3199

This paper presents the first observations of molecular gas associated with the Wolf-Rayet ring nebula NGC 3199 around the WR star WR 18. This includes first observations of the molecules HCN, HCO+,

Discovery of a new Wolf-Rayet star and its ring nebula in Cygnus

We report the serendipitous discovery of a ring nebula around a candidate Wolf–Rayet (WR) star, HBHA 4202-22, in Cygnus using the Spitzer Space Telescope archival data. Our spectroscopic follow-up

Spectral Identification of New Galactic cLBV and WR Stars

We have undertaken a near-IR spectral survey of stars associated with compact nebulae recently revealed by the Spitzer and WISE imaging surveys. These circumstellar nebulae, produced by massive

MN112: a new Galactic candidate Luminous Blue Variable

We report the discovery of a new Galactic candidate Luminous Blue Variable (cLBV) via detection of an infrared circular nebula and follow-up spectroscopy of its central star. The nebula, MN112, is

A survey of nebulae around Galactic Wolf-Rayet stars in the southern sky, 1

We present the second half of a charge coupled device (CCD) narrow-band imaging survey of galactic Wolf-Rayet stars located in the southern hemisphere as listed by van der Hucht et al. (1981). Images


The Wolf–Rayet (WR) bubble S 308 around the WR star HD 50896 is one of the only two WR bubbles known to possess X-ray emission. We present XMM-Newton observations of three fields of this WR bubble