Imaging and Spectroscopic Observations of the Case Survey Blue/Emission- Line Galaxies

1995 ◽  
Vol 109 ◽  
pp. 2376 ◽  
Author(s):  
John J. Salzer ◽  
J. Ward Moody ◽  
Jessica L. Rosenberg ◽  
Stephen A. Gregory ◽  
Michael V. Newberry
Keyword(s):  
Emission Line ◽  
Blue Emission ◽  
Spectroscopic Observations ◽  
Emission Line Galaxies

scholarly journals Oxygen Abundance and Stellar Populations in the Three Most Metal-Deficient Emission-Line Galaxies Known in the Local Universe: SBS 0335-052,E, SBS 0335-052 W and I Zw 18

2006 ◽  
Vol 2 (S235) ◽  
pp. 326-326 ◽  
Author(s):  
P. Papaderos ◽  
T. Yakobchuk ◽  
Y. I. Izotov ◽  
N. G. Guseva ◽  
K. J. Fricke
Keyword(s):  
Emission Line ◽  
Spatial Scale ◽  
Stellar Populations ◽  
Local Universe ◽  
Oxygen Abundance ◽  
Abundance Gradient ◽  
Spectroscopic Observations ◽  
Emission Line Galaxies ◽  
Line Galaxy

We present new spectroscopic observations of the system of the two blue compact dwarf (BCD) galaxies SBS 0335-052 W and SBS 0335-052 E with the 3.6m ESO telescope. The oxygen abundance in SBS 0335-052 W was determined to be 12 + log(O/H) = 7.13±0.08, confirming that this galaxy is the most metal-deficient emission-line galaxy known. We find that the oxygen abundance in SBS 0335-052 E varies from region to region in the range from 7.20 to 7.31, suggesting the presence of an abundance gradient over a spatial scale of ~1 kpc. Signatures of early carbon-type Wolf-Rayet stars are detected in cluster #3 of SBS 0335-052 E, corresponding to the emission of 20 to 130 WC4 stars, depending on the adopted luminosity of a single WC4 star in the Civ λ4658 emission line (Papaderos et al. 2006).

scholarly journals Emission-Line Galaxies in Shahbazian Compact Groups

1999 ◽  
Vol 194 ◽  
pp. 394-398 ◽  
Author(s):  
H. Tiersch ◽  
D. Stoll ◽  
S. Neizvestny ◽  
A.S. Amirkhanian ◽  
A.G. Egikian
Keyword(s):  
Emission Line ◽  
Research Group ◽  
Compact Groups ◽  
European Southern Observatory ◽  
Groups Of Galaxies ◽  
Spectroscopic Observations ◽  
Photometric And Spectroscopic Observations ◽  
Emission Line Galaxies ◽  
Calar Alto

Based on the CCD photometric and spectroscopic observations taken with 1.23 m and 2.2 m telescopes at the German-Spanish Astronomical Center in Calar-Alto (Almeria, Spain) as well as with the 1.54 m telescope at the European Southern Observatory (La Silla, Chile) some emission-line galaxies (ELGs) surprisingly have been found in Shahbazian compact groups of galaxies (SHCGs) by our research group.

scholarly journals An Interesting Pair of Active Galaxies

1987 ◽  
Vol 124 ◽  
pp. 531-534
Author(s):  
X.-T. He ◽  
X.H. Xiao ◽  
S. Okamura ◽  
T. Noguchi ◽  
H. Maehara ◽  
...  
Keyword(s):  
Emission Line ◽  
Active Galaxies ◽  
Spectroscopic Observations ◽  
Line Features ◽  
Emission Line Galaxies ◽  
The Uk

A pair of emission-line galaxies with separation 7.1 arcseconds was found from the survey of the UK Schmidt objective-prizm plates. The spectroscopic observations by the 1.88m reflector of the Okayama Observatory show the same emission-line features with Z=0.0441.

scholarly journals Spectroscopic Studies of Emission Line Galaxies

1994 ◽  
Vol 159 ◽  
pp. 442-443
Author(s):  
M. S. Chun ◽  
E. C. Sung ◽  
H. K. Moon ◽  
Y. I. Byun
Keyword(s):  
Emission Line ◽  
Spectroscopic Studies ◽  
Spectroscopic Observations ◽  
Normal Galaxies ◽  
Compact Galaxies ◽  
Emission Line Galaxies

Spectroscopic Observations were made to study 42 emission line objects. The analysis of these long slit spectra shows that 15 out of 42 galaxies are blue compact galaxies (BCGs). 21 of them are starforming or HII galaxies and 3 were found to be normal galaxies.

A Study of the [OII]λ3727/Hα Flux Ratio of Emission Line Galaxies

2010 ◽  
Vol 34 (3) ◽  
pp. 234-244 ◽  
Author(s):  
Gao Feng ◽  
Kong Xu ◽  
Lin Xuan-bin ◽  
Zhang Wei ◽  
Li Jun-rong
Keyword(s):  
Emission Line ◽  
Flux Ratio ◽  
Emission Line Galaxies

scholarly journals Extreme emission-line galaxies out toz~ 1 in zCOSMOS

2015 ◽  
Vol 578 ◽  
pp. A105 ◽  
Author(s):  
R. Amorín ◽  
E. Pérez-Montero ◽  
T. Contini ◽  
J. M. Vílchez ◽  
M. Bolzonella ◽  
...  
Keyword(s):  
Emission Line ◽  
Emission Line Galaxies

scholarly journals The completed SDSS-IV extended baryon oscillation spectroscopic survey: growth rate of structure measurement from anisotropic clustering analysis in configuration space between redshift 0.6 and 1.1 for the emission-line galaxy sample

2020 ◽  
Vol 499 (4) ◽  
pp. 5527-5546 ◽  
Author(s):  
Amélie Tamone ◽  
Anand Raichoor ◽  
Cheng Zhao ◽  
Arnaud de Mattia ◽  
Claudio Gorgoni ◽  
...  
Keyword(s):  
Growth Rate ◽  
Correlation Function ◽  
Emission Line ◽  
Sloan Digital Sky Survey ◽  
Linear Growth Rate ◽  
Angular Diameter Distance ◽  
Consensus Values ◽  
Galaxy Sample ◽  
Emission Line Galaxies ◽  
Anisotropic Clustering

ABSTRACT We present the anisotropic clustering of emission-line galaxies (ELGs) from the Sloan Digital Sky Survey IV (SDSS-IV) extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 16 (DR16). Our sample is composed of 173 736 ELGs covering an area of 1170 deg2 over the redshift range 0.6 ≤ z ≤ 1.1. We use the convolution Lagrangian perturbation theory in addition to the Gaussian streaming redshift space distortions to model the Legendre multipoles of the anisotropic correlation function. We show that the eBOSS ELG correlation function measurement is affected by the contribution of a radial integral constraint that needs to be modelled to avoid biased results. To mitigate the effect from unknown angular systematics, we adopt a modified correlation function estimator that cancels out the angular modes from the clustering. At the effective redshift, zeff = 0.85, including statistical and systematical uncertainties, we measure the linear growth rate of structure fσ8(zeff) = 0.35 ± 0.10, the Hubble distance $D_ H(z_{\rm eff})/r_{\rm drag} = 19.1^{+1.9}_{-2.1}$, and the comoving angular diameter distance DM(zeff)/rdrag = 19.9 ± 1.0. These results are in agreement with the Fourier space analysis, leading to consensus values of: fσ8(zeff) = 0.315 ± 0.095, $D_H(z_{\rm eff})/r_{\rm drag} = 19.6^{+2.2}_{-2.1}$, and DM(zeff)/rdrag = 19.5 ± 1.0, consistent with ΛCDM model predictions with Planck parameters.

scholarly journals Spectral classification of emission-line galaxies

1987 ◽  
Vol 63 ◽  
pp. 295 ◽  
Author(s):  
Sylvain Veilleux ◽  
Donald E. Osterbrock
Keyword(s):  
Emission Line ◽  
Spectral Classification ◽  
Emission Line Galaxies
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