Navegação Ciências Exatas e da Terra por Assunto "H II regions"
Resultados 1-5 de 5
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An atlas of H II regions in nearby Seyfert galaxies
(1996) [Artigo de periódico]Continuum-subtracted Hα images of 17 nearby Seyfert galaxies are presented. The images are calibrated astrometrically usmg the Hubble Space Telescope Guide Star Catalog reference frame. For each galaxy, an inventory of HII ... -
H II region age indicators
(1986) [Artigo de periódico]The evolution of some properties of H II regions such as the relative volume R of the He⁺ and H⁺ zones, the equivalent width Wнβ of the Hβ emission line and the ratio [O III]/Hβ of the lines [O II] λλ4959, 5007 to Hβ, was ... -
Long-slit spectrophotometry of the H II regions Gum 38a and Gum 38b
(1997) [Artigo de periódico]We present new long-slit spectrophotometric observations in the range 3700-7200 Å of the H II regions Gum 38a and Gum 38b (RCW 57). We study the spatial distribution of reddenig ad excitation throughout the complex by means ... -
Measurements of the equivalent width of the h/sub beta/ emission line and age determination of hii regions of the lmc and smc
(1981) [Artigo de periódico]The equivalent width of the emission line Hβ was measured photoelectrically in 29 H II regions of the LMC and 2 of the SMC respectively. The age of these regions was obtained through a calibration of Wʜβ. A relation was ... -
The metal-poor dwarf irregular galaxy candidate next to Mrk 1172
(2021) [Artigo de periódico]In this work, we characterize the properties of the object SDSS J020536.84−081424.7, an extended nebular region with projected extension of 14 × 14 kpc2 in the line of sight of the ETG Mrk 1172, using unprecedented ...
