Chemical composition of H II regions in the Small Magellanic Cloud and the pregalactic helium abundance

1976 ◽  
Vol 203 ◽  
pp. 581 ◽  
Author(s):  
M. Peimbert ◽  
S. Torres-Peimbert
Keyword(s):  
Chemical Composition ◽  
Magellanic Cloud ◽  
H Ii Regions ◽  
Helium Abundance ◽  
Small Magellanic Cloud

scholarly journals Determination of the Primordial Helium Abundance Based on NGC 346, an H ii Region of the Small Magellanic Cloud

2019 ◽  
Vol 876 (2) ◽  
pp. 98 ◽  
Author(s):  
Mabel Valerdi ◽  
Antonio Peimbert ◽  
Manuel Peimbert ◽  
Andrés Sixtos
Keyword(s):  
Magellanic Cloud ◽  
Helium Abundance ◽  
Small Magellanic Cloud ◽  
H Ii Region ◽  
Primordial Helium

scholarly journals Planetary Nebulae and the Pregalactic Helium Abundance

1989 ◽  
Vol 131 ◽  
pp. 213-213 ◽  
Author(s):  
Walter J. Maciel
Keyword(s):  
Chemical Composition ◽  
Recent Work ◽  
Planetary Nebulae ◽  
H Ii Regions ◽  
Helium Abundance

Recent work has emphasized the determination of the pregalactic helium abundance by mass Yp and the slope ΔY/ΔZ based on the chemical composition of both galactic and extragalactic H II regions (Pagel, 1987; Pagel et al., 1986).

Abundances in 10 H II regions in the Small Magellanic Cloud

1977 ◽  
Vol 216 ◽  
pp. 706 ◽  
Author(s):  
R. J. Dufour ◽  
W. V. Harlow
Keyword(s):  
Magellanic Cloud ◽  
H Ii Regions ◽  
Small Magellanic Cloud

scholarly journals MUSE Observations of NGC330 in the Small Magellanic Cloud: Helium Abundance of Bright Main-sequence Stars

2020 ◽  
Vol 159 (4) ◽  
pp. 152
Author(s):  
R. Carini ◽  
K. Biazzo ◽  
E. Brocato ◽  
L. Pulone ◽  
L. Pasquini
Keyword(s):  
Main Sequence ◽  
Magellanic Cloud ◽  
Helium Abundance ◽  
Small Magellanic Cloud ◽  
Main Sequence Stars

scholarly journals A Radio Survey of the SMC at 843 MHz with the MOST: I. The Survey

1998 ◽  
Vol 15 (3) ◽  
pp. 280-298 ◽  
Author(s):  
A. J. Turtle ◽  
Taisheng Ye ◽  
S.W. Amy ◽  
Jennifer Nicholls
Keyword(s):  
Supernova Remnants ◽  
Angular Resolution ◽  
Magellanic Cloud ◽  
H Ii Regions ◽  
Small Magellanic Cloud ◽  
Radio Image ◽  
Extended Sources ◽  
Radio Survey

AbstractA radio survey at a frequency of 843 MHz of 36 square degrees containing the Small Magellanic Cloud (SMC) has been made with the Molonglo Observatory Synthesis Telescope (MOST). The angular resolution is around 45 arcsec and the rms noise is about 1 mJy per beam. The radio image of the region is presented showing over a thousand sources with a variety of angular sizes from unresolved to 10 arcmin. Most of the sources are presumed to be background objects but about 70 of the more extended sources are H II regions or supernova remnants within the SMC.

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