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Spectroscopic observations of a sample of dwarf spirals galaxies. I.Oxygen abundances
Spectroscopic observations dwarf spirals galaxies
2011/1/13
The oxygen abundances for four dwarf spiral galaxies have been determined using long-slit spectroscopy. The abundances of these galaxies have not previously reported in the literature. Several HII reg...
Spectroscopic observations of a sample of dwarf spiral galaxies. II- Abundance gradients
dwarf spiral galaxies Abundance gradients
2010/11/10
The oxygen gradient of four dS galaxies has been determined using abundances for several
Hii regions determined with four different methods. The gradient slopes of the three non-barred
galaxies in t...
Ultraviolet Spectroscopic Observations of Coronal Streamers in the SOHO Era
Sun corona ultraviolet
2010/9/16
Measurements made with the Ultraviolet Coronagraph Spectrometer (UVCS) on the Solar and Heliospheric Observatory can be used to determine physical parameters in the solar corona such as hydrogen and i...
New spectroscopic observations of dwarf nova BZ ursae Majoris with extremely unusual emission lines profiles
spectroscopic observations dwarf nova BZ ursae Majoris
2009/6/17
New spectroscopic observations of dwarf nova BZ ursae Majoris with extremely unusual emission lines profiles。
Fe II in the orion nebula：spectroscopic observations and theoretical models
Fe II spectroscopic observations orion nebula
2009/6/11
Fe II in the orion nebula：spectroscopic observations and theoretical models。
Ultraviolet Spectroscopic Observations of Coronal Streamers in the SOHO Era
Sun corona ultraviolet
2009/5/6
Measurements made with the Ultraviolet Coronagraph Spectrometer
(UVCS) on the Solar and Heliospheric Observatory can be used
to determine physical parameters in the solar corona such as hydrogen
a...