Stellar dynamics of blue compact galaxies
نویسندگان
چکیده
منابع مشابه
Stellar dynamics of blue compact galaxies II . Further
Context. Luminous blue compact galaxies, common at z ∼ 1 but now relatively rare, show disturbed kinematics in emission lines. Aims. As part of a programme to understand their formation and evolution, we have investigated the stellar dynamics of a number of nearby objects in this class. Methods. We obtained long-slit spectra with VLT/FORS2 in the spectral region covering the near-infrared calci...
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Blue compact galaxies (BCGs) are compact galaxies that are dominated by intense star formation. Comparing the observational properties with the predictions of the stellar population synthesis model, we have analyzed the nuclear stellar population and emission line spectra in a sample of 10 BCGs. The results indicate that the continuum flux fractions at 5870 Å due to old stellar components and y...
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In a programme of observations of local luminous blue compact galaxies (BCGs) we are investigating kinematics by using tracers of both stars and ionised gas. Here we summarise our program and present new data on the local Lyman break galaxy analogue Haro 11. From spatially-resolved spectroscopy around the near-infrared Ca ii triplet, we find that its stars and ionised gas have similar velocity ...
متن کاملStellar dynamics of blue compact galaxies II . Further indications of a merger in ESO 338 - IG 04 ⋆
Context. Luminous blue compact galaxies, common at z ∼ 1 but now relatively rare, show disturbed kinematics in emission lines. Aims. As part of a program to understand their formation and evolution, we have investigated the stellar dynamics of a number of nearby objects in this class. Methods. We have obtained long-slit spectra with VLT/FORS2 in the spectral region covering the near-infrared ca...
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We describe the dynamical properties which may be inferred from HST/STIS spectroscopic observations of luminous compact blue galaxies (LCBGs) between 0.1 < z < 0.7. While the sample is homogeneous in blue rest-frame color, small size and line-width, and high surface-brightness, their detailed morphology is eclectic. Here we determine the amplitude of rotation versus random, or disturbed motions...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2008
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20078916