Studying star forming dwarf galaxies in Abell 779, Abell 1367, Coma, and Hercules clusters
نویسندگان
چکیده
منابع مشابه
The Star-forming Dwarf Galaxy Populations of Two Z ∼ 0.4 Clusters: Ms1512.4+3647 and Abell 851
We present the results of a deep narrow-band [OII] 3727 Å emission-line search for faint (g < 27), star-forming galaxies in the field of the z = 0.37 MS1512.4+3647 cluster. We find no evidence for an over-density of emission-line sources relative to the field at z ∼ 0.4 (Hogg et al. 1998), and therefore conclude that the MS1512.4+3647 sample is dominated by field [OII] emission-line galaxies wh...
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Optical spectroscopy and the UV luminosity function of galaxies in the Abell 1367, Coma and Virgo clusters. Abstract. Optical spectroscopy of 93 galaxies, 60 projected in the direction of Abell 1367, 21 onto the Coma cluster and 12 on Virgo, is reported. The targets were selected either because they were detected in previous Hα, UV or r ′ surveys. The present observations bring to 100% the reds...
متن کاملTemperature Structure in Abell 1367
We study the temperature structure of the rich cluster of galaxies Abell 1367 using two independent methods of correcting for the ASCA PSF. The results of the two methods are in excellent agreement and give solid evidence of a strong and localized shock in the intracluster medium (ICM). Our analysis suggests that we are observing the merger of two subclusters. We find that the lower luminosity ...
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The discovery of a striking astrophysical laboratory in the cluster of galaxies Abell 1367 (Sakai et al. 2002) is confirmed with independent imaging and spectroscopic observations and further investigated in the present analysis. Two giant and ten dwarf/HII galaxies, members to a group, are simultaneously undergoing a burst of star formation. Redshift measurements suggest that the group galaxie...
متن کاملMultiple merging in the Abell cluster 1367 . ⋆
We present a dynamical analysis of the central ∼ 1.3 square degrees of the cluster of galaxies Abell 1367, based on 273 redshift measurements (of which 119 are news). From the analysis of the 146 confirmed cluster members we derive a significantly non-Gaussian velocity distribution, with a mean location CBI = 6484±81 km s −1 and a scale SBI = 891 ± 58 km s −1. The cluster appears elongated from...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2018
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201833113