| | |
| | |
Stat |
Members: 3645 Articles: 2'500'096 Articles rated: 2609
17 April 2024 |
|
| | | |
|
Article overview
| |
|
Detailed Studies of IPHAS sources. II. Sab 19, a true planetary nebula and its mimic crossing the Perseus Arm | Martin A Guerrero
; Roberto Ortiz
; Laurence Sabin
; Gerardo Ramos-Larios
; Emilio J Alfaro
; | Date: |
12 Oct 2020 | Abstract: | The INT Photometric H$alpha$ Survey (IPHAS) has provided us with a number of
new-emission line sources, among which planetary nebulae (PNe) constitute an
important fraction. Here we present a detailed analysis of the IPHAS nebula
Sab,19 (IPHASX,J055242.8+262116) based on radio, infrared, and optical images
and intermediate- and high-dispersion longslit spectra. Sab,19 consists of a
roundish 0.10 pc in radius double-shell nebula surrounded by a much larger 2.8
pc in radius external shell with a prominent H-shaped filament. We confirm the
nature of the main nebula as a PN whose sub-solar N/O ratio abundances, low
ionized mass, peculiar radial velocity, and low-mass central star allow us to
catalog it as a type III PN. Apparently, the progenitor star of Sab,19 became
a PN when crossing the Perseus Arm during a brief visit of a few Myr. The
higher N/O ratio and velocity shift $simeq$40 kms of the external shell with
respect to the main nebula and its large ionized mass suggest that it is not
truly associated with Sab,19, but it is rather dominated by a Strömgren zone
in the interstellar medium ionized by the PN central star. | Source: | arXiv, 2010.05553 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser claudebot
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |