Planetary nebulae with UVIT: Far ultra-violet halo around the Bow Tie nebula (NGC 40)

@article{Rao2018PlanetaryNW,
  title={Planetary nebulae with UVIT: Far ultra-violet halo around the Bow Tie nebula (NGC 40)},
  author={N. K. Kameswara Rao and Firoza K. Sutaria and Jayant Murthy and S. Krishna and R. Mohan and Alak K. Ray},
  journal={Astronomy and Astrophysics},
  year={2018},
  volume={609}
}
Context . NGC 40 is a planetary nebula with diffuse X-ray emission, suggesting an interaction of the high-speed wind from WC8 central star (CS) with the nebula. It shows strong C IV 1550 Å emission that cannot be explained by thermal processes alone. We present here the first map of this nebula in C IV emission using broad band filters on the Ultra-Violet Imaging Telescope (UVIT). Aim . We aim to map the hot C IV-emitting gas and its correspondence with soft X-ray (0.3–8 keV) emitting regions… 

Figures from this paper

Spectroscopic Investigation Of Nebular Gas (SING): a dedicated NUV spectrograph to study extended objects from a stable space platform
One of the most exciting parts of the astrophysical spectrum is the ultraviolet, with a greater density of absorption and emission lines than any other part of the electromagnetic spectra. Our
Planetary nebulae with UVIT
The high excitation planetary nebula, NGC 6302, has been imaged in two far-ultraviolet (FUV) filters, F169M (Sapphire; λeff: 1608 Å) and F172M (Silica; λeff: 1717 Å) and two near-UV (NUV) filters,
Hidden IR structures in NGC 40: signpost of an ancient born-again event
We present the analysis of infrared (IR) observations of the planetary nebula NGC 40 together with spectral analysis of its [WC]-type central star HD 826. Spitzer IRS observations were used to
Spectroscopic Investigation of Nebular Gas (SING): a dedicated NUV spectrograph to study extended objects
SING is a near ultraviolet (NUV) spectrograph with a size close to 6U CubeSat form-factor. The spectrograph operates in the wavelength range from 1800 Å to 3000 Å, with a spectral resolution of 2 Å
Development of detectors for space missions and balloon flights
TLDR
The design, fabrication, and characterization of a photon counting, intensified CMOS (iCMOS) detector is described, which is being used as the back end instrument of two of the UV payloads on a balloon platform above 40 km.
AstroSat: Concept to achievements
AstroSat has completed 5 years of successful in-orbit operation on 28 September 2020. AstroSat is ISRO’s first Indian multi-wavelength satellite operating as a space Observatory. It is the only

References

SHOWING 1-10 OF 28 REFERENCES
Central Stars of Planetary Nebulae in the Large Magellanic Cloud: A Far-Ultraviolet Spectroscopic Analysis*
We observed seven central stars of planetary nebulae (PNe) in the Large Magellanic Cloud (LMC) with the Far Ultraviolet Spectroscopic Explorer and performed a model-based analysis of these spectra in
X-Ray Imaging of Planetary Nebulae with Wolf-Rayet-type Central Stars: Detection of the Hot Bubble in NGC 40
We present the results of Chandra X-Ray Observatory observations of the planetary nebulae (PNs) NGC 40 and Hen 2-99. Both PNs feature late-type Wolf-Rayet central stars that are currently driving
The halo and rings of the planetary nebula NGC 40 in the mid‐infrared
We present the imaging and spectroscopy of NGC 40 acquired using the Spitzer Space Telescope and the Infrared Space Observatory. These are used to investigate the nature of emission from the central
The winds of hydrogen-rich central stars of planetary nebulae
We have modelled far-UV, UV and optical spectra of a sample of 10 hydrogen-rich central stars of planetary nebulae (CSPN) using stellar atmosphere codes to derive their photospheric and wind
First Detection of Ultraviolet Emission from a Detached Dust Shell: Galaxy Evolution Explorer Observations of the Carbon Asymptotic Giant Branch Star U Hya
We present the discovery of an extended ring of ultraviolet (UV) emission surrounding the asymptotic giant branch (AGB) star U Hya in archival observations performed by the Galaxy Evolution Explorer.
Detailed Far-Ultraviolet to Optical Analysis of Four [WR] Stars
We present far-UV to optical analyses of four hydrogen-deficient central stars of planetary nebulae: BD +30 3639, NGC 40, NGC 5315, and NGC 6905. Using the radiative transfer code CMFGEN, we
Investigating the Near-Infrared Properties of Planetary Nebulae II. Medium Resolution Spectra. 2; Medium Resolution Spectra
We present medium-resolution (R ~ 700) near-infrared (λ = 1-2.5 μm) spectra of a sample of planetary nebulae (PNe). A narrow slit was used which sampled discrete locations within the nebulae;
Fluorescent Molecular Hydrogen Emission in IC 63: FUSE, Hopkins Ultraviolet Telescope, and Rocket Observations
We present far-ultraviolet observations of IC 63, an emission/reflection nebula illuminated by the B0.5 IV star γ Cas, located 1.3 pc from the nebula. Molecular hydrogen fluorescence was detected
Molecular and Atomic Excitation Stratification in the Outflow of the Planetary Nebula M27
High-resolution spectroscopy with FUSE and HST STIS of atomic and molecular velocity stratification in the nebular outflow of M27 challenge models of the abundance kinematics in planetary nebulae.
A Detailed Analysis of the Stellar and Nebular IUE Spectrum of the Peculiar ``O VI Sequence'' Planetary Nebula NGC 40
A detailed analysis of archival individual and co-added low- and high-dispersion IUE spectra of the planetary nebula NGC 40 has been performed, using NEWSIPS extracted spectra. More than 50 emission
...
1
2
3
...