Search: onr:"swepub:oai:research.chalmers.se:139ba69b-6449-42bd-b02d-37b33439dab9" >
JWST observations o...
JWST observations of the Ring Nebula (NGC 6720): I. Imaging of the rings, globules, and arcs
-
- Wesson, R. (author)
- University College London (UCL),Cardiff University
-
- Matsuura, Mikako (author)
- Cardiff University
-
- Zijlstra, A. (author)
- University of Manchester
-
show more...
-
- Volk, Kevin (author)
- Space Telescope Science Institute (STScI)
-
- Kavanagh, Patrick (author)
- Dublin Institute for Advanced Studies,Maynooth University
-
- García-Segura, G. (author)
- Universidad Nacional Autónoma de México (UNAM),Universidad Nacional Autonoma de Mexico
-
- McDonald, I. (author)
- University of Manchester,Open University
-
- Sahai, R. (author)
- California Institute of Technology (Caltech)
-
- Barlow, M. J. (author)
- University College London (UCL)
-
- Cox, N. L. J. (author)
- Observatoire de la Cote d'Azur
-
- Bernard-Salas, J. (author)
- Observatoire de la Cote d'Azur
-
- Aleman, I. (author)
- Universidade Federal de Itajuba,Federal University of Itajubá,Universidade de Sao Paulo (USP),University of Sao Paulo (USP)
-
- Cami, Jan (author)
- Western University,SETI Institute
-
- Clark, Nicholas (author)
- Western University
-
- Dinerstein, Harriet L. (author)
- The University of Texas at Austin, USA
-
- Justtanont, Kay, 1965 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Kaplan, Kyle F. (author)
- The University of Texas at Austin, USA
-
- Manchado, Arturo (author)
- Consejo Nacional de Investigaciones Cientificas y Tecnicas,Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
-
- Peeters, Els (author)
- Western University,SETI Institute
-
- Van de Steene, G. (author)
- Royal Observatory of Belgium
-
- van Hoof, P. A. M. (author)
- Royal Observatory of Belgium
-
show less...
-
(creator_code:org_t)
- 2024
- 2024
- English.
-
In: Monthly Notices of the Royal Astronomical Society. - 0035-8711 .- 1365-2966. ; 528:2, s. 3392-3416
- Related links:
-
https://research.cha... (primary) (free)
-
show more...
-
https://doi.org/10.1...
-
https://research.cha...
-
show less...
Abstract
Subject headings
Close
- We present JWST images of the well-known planetary nebula NGC 6720 (the Ring Nebula), covering wavelengths from 1.6 to 25 m. The bright shell is strongly fragmented with some 20 000 dense globules, bright in H2, with a characteristic diameter of 0.2 arcsec and density nH ∼105-106 cm-3. The shell contains a narrow ring of polycyclic aromatic hydrocarbon (PAH) emission. H2 is found throughout the shell and also in the halo. H2 in the halo may be located on the swept-up walls of a biconal polar flow. The central cavity is filled with high-ionization gas and shows two linear structures which we suggest are the edges of a biconal flow, seen in projection against the cavity. The central star is located 2 arcsec from the emission centroid of the cavity and shell. Linear features ('spikes') extend outward from the ring, pointing away from the central star. Hydrodynamical simulations reproduce the clumping and possibly the spikes. Around 10 low-contrast, regularly spaced concentric arc-like features are present; they suggest orbital modulation by a low-mass companion with a period of about 280 yr. A previously known much wider companion is located at a projected separation of about 15 000 au; we show that it is an M2-M4 dwarf. NGC 6720 is therefore a triple star system. These features, including the multiplicity, are similar to those seen in the Southern Ring Nebula (NGC 3132) and may be a common aspect of such nebulae.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- planetary nebulae: general
- stars: evolution
- planetary nebulae: individual: NGC6720
- circumstellar matter
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
To the university's database
- By the author/editor
-
Wesson, R.
-
Matsuura, Mikako
-
Zijlstra, A.
-
Volk, Kevin
-
Kavanagh, Patric ...
-
García-Segura, G ...
-
show more...
-
McDonald, I.
-
Sahai, R.
-
Barlow, M. J.
-
Cox, N. L. J.
-
Bernard-Salas, J ...
-
Aleman, I.
-
Cami, Jan
-
Clark, Nicholas
-
Dinerstein, Harr ...
-
Justtanont, Kay, ...
-
Kaplan, Kyle F.
-
Manchado, Arturo
-
Peeters, Els
-
Van de Steene, G ...
-
van Hoof, P. A. ...
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Astronomy Astrop ...
- Articles in the publication
-
Monthly Notices ...
- By the university
-
Chalmers University of Technology