Density studies of giant extragalactic H II regions

Bibcode
1990Ap&SS.171..203C
DOI
10.1007/BF00646847
Castaneda, Hector O.; Vilchez, J. M.
Bibliographical reference

(IAU, European Regional Astronomy Meeting, 11th, La Laguna, Spain, July 3-8, 1989) Astrophysics and Space Science (ISSN 0004-640X), vol. 171, no. 1-2, Sept. 1990, p. 203-205.

Advertised on:
9
1990
Number of authors
2
IAC number of authors
0
Citations
0
Refereed citations
0
Description
The variation of the electron density with position in a selected group of bright giant extragalactic H II regions has been studied using long slit spectrophotometry at high spectral and spatial resolution. Density values for the ionized gas of the regions have been obtained from the measurement of the forbidden S II 6717, 6731 A ratio. It is concluded that the regions are not homogeneous; the density varies with position, with the zones of high density frequently associated to high surface brightness.
Type
Non-refereed
H II regions
Milky Way Galaxy

It may interest you

  • Non-refereed
    ANDES, the high-resolution spectrograph for the ELT: design of the adaptive optics system
    ANDES,the high resolution spectrograph for the ELT, will work both in seeing limited mode and with Adaptive Optics (AO) correction. ANDES-SCAO is a single conjugated AO system working with natural guide stars, feeding the IFU coupled to the YJH spectrograph. The main science goal of the ANDES AO mode is the characterization of the exo-planet
    Pinna, Enrico et al.

    Advertised on:

    8
    2024
    Bibcode
    2024SPIE13097E..4WP
    Citations
    0
  • Non-refereed
    HARMONI at ELT: verification tests of opto-mechanical mounts for HARMONI preoptics in cryogenic environment
    HARMONI is the high angular optical and near-IR integral field spectrograph (IFS) for the ELT. The instrument covers a large spectral range from 470 to 2450nm with resolving powers from 3300 to 18000 and spatial sampling from 60 to 4mas. A workhorse instrument designed to operate in two Adaptive Optics modes - Single-Conjugate Adaptive Optics (SCAO
    Hernández-González, Alberto et al.

    Advertised on:

    8
    2024
    Bibcode
    2024SPIE13100E..52H
    Citations
    0