eta Carinae: linelist for the emission spectrum of the Weigelt blobs in the 1700 to 10 400 angstrom wavelength region
Zethson, T. ; Johansson, Sveneric LU ; Hartman, Henrik LU
and Gull, T. R.
(2012)
In Astronomy & Astrophysics
540.
- Abstract
- Aims. We present line identifications in the 1700 to 10 400 angstrom region for the Weigelt blobs B and D, located 0.'' 1 to 0 ''.3 NNW of Eta Carinae. The aim of this work is to characterize the behavior of these luminous, dense gas blobs in response to the broad highstate and the short low-state of. Carinae during its 5.54-year spectroscopic period. Methods. The spectra were recorded in a low state (March 1998) and an early high state (February 1999) with the Hubble Space Telescope/Space Telescope Imaging Spectrograph (HST/STIS) from 1640 to 10 400 angstrom using the 52 '' x 0.1 aperture centered on Eta Carinae at position angle, PA = 332 degrees. Extractions of the reduced spectrum including both Weigelt B and D, 0.'' 28 in length along... (More)
- Aims. We present line identifications in the 1700 to 10 400 angstrom region for the Weigelt blobs B and D, located 0.'' 1 to 0 ''.3 NNW of Eta Carinae. The aim of this work is to characterize the behavior of these luminous, dense gas blobs in response to the broad highstate and the short low-state of. Carinae during its 5.54-year spectroscopic period. Methods. The spectra were recorded in a low state (March 1998) and an early high state (February 1999) with the Hubble Space Telescope/Space Telescope Imaging Spectrograph (HST/STIS) from 1640 to 10 400 angstrom using the 52 '' x 0.1 aperture centered on Eta Carinae at position angle, PA = 332 degrees. Extractions of the reduced spectrum including both Weigelt B and D, 0.'' 28 in length along the slit, were used to identify the narrow, nebular emission lines, measure their wavelengths and estimate their fluxes. Results. A linelist of 2500 lines is presented for the high and low states of the combined Weigelt blobs B and D. The spectra are dominated by emission lines from the iron-group elements, but include lines from lighter elements including parity-permitted and forbidden lines. A number of lines are fluorescent lines pumped by H Ly alpha. Other lines show anomalous excitation. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2561831
- author
- Zethson, T.
; Johansson, Sveneric
LU
; Hartman, Henrik
LU
and Gull, T. R.
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- line: identification, circumstellar matter, stars: kinematics and, dynamics, stars: individual: eta Carinae
- in
- Astronomy & Astrophysics
- volume
- 540
- publisher
- EDP Sciences
- external identifiers
-
- wos:000303315400147
- scopus:84859604501
- ISSN
- 0004-6361
- DOI
- 10.1051/0004-6361/201116696
- language
- English
- LU publication?
- yes
- id
- a0756ff1-bc69-4cb9-814c-b4476cee3383 (old id 2561831)
- date added to LUP
- 2016-04-01 13:25:52
- date last changed
- 2024-04-10 05:40:54
@article{a0756ff1-bc69-4cb9-814c-b4476cee3383,
abstract = {{Aims. We present line identifications in the 1700 to 10 400 angstrom region for the Weigelt blobs B and D, located 0.'' 1 to 0 ''.3 NNW of Eta Carinae. The aim of this work is to characterize the behavior of these luminous, dense gas blobs in response to the broad highstate and the short low-state of. Carinae during its 5.54-year spectroscopic period. Methods. The spectra were recorded in a low state (March 1998) and an early high state (February 1999) with the Hubble Space Telescope/Space Telescope Imaging Spectrograph (HST/STIS) from 1640 to 10 400 angstrom using the 52 '' x 0.1 aperture centered on Eta Carinae at position angle, PA = 332 degrees. Extractions of the reduced spectrum including both Weigelt B and D, 0.'' 28 in length along the slit, were used to identify the narrow, nebular emission lines, measure their wavelengths and estimate their fluxes. Results. A linelist of 2500 lines is presented for the high and low states of the combined Weigelt blobs B and D. The spectra are dominated by emission lines from the iron-group elements, but include lines from lighter elements including parity-permitted and forbidden lines. A number of lines are fluorescent lines pumped by H Ly alpha. Other lines show anomalous excitation.}},
author = {{Zethson, T. and Johansson, Sveneric and Hartman, Henrik and Gull, T. R.}},
issn = {{0004-6361}},
keywords = {{line: identification; circumstellar matter; stars: kinematics and; dynamics; stars: individual: eta Carinae}},
language = {{eng}},
publisher = {{EDP Sciences}},
series = {{Astronomy & Astrophysics}},
title = {{eta Carinae: linelist for the emission spectrum of the Weigelt blobs in the 1700 to 10 400 angstrom wavelength region}},
url = {{https://lup.lub.lu.se/search/files/3364507/2970474.pdf}},
doi = {{10.1051/0004-6361/201116696}},
volume = {{540}},
year = {{2012}},
}