- ID:
- ivo://CDS.VizieR/J/ApJ/634/977
- Title:
- Redshifts in Cl 0024+16 members
- Short Name:
- J/ApJ/634/977
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We report results from a panoramic spectroscopic survey of 955 objects in the field of the rich cluster Cl 0024+1654 (z~0.4), complementing the HST imaging presented in the first paper in this series. Combining with previous work, we compile a catalog of 1394 unique redshifts in the field of this cluster (1334 in Table 2), including 486 cluster members spread across an area 10Mpc in diameter. Our new spectroscopic sample includes over 200 high-quality spectra of cluster members. We examine the properties of a large sample of 104 cluster early-type galaxies as a function of cluster radius and local density, using them as sensitive tracers of the various physical processes that may be responsible for galaxy evolution.
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Search Results
- ID:
- ivo://CDS.VizieR/J/AJ/105/1637
- Title:
- Redshifts in equatorial strip
- Short Name:
- J/AJ/105/1637
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present 865 redshifts of galaxies located in the equatorial strip -17.5 deg <= Dec. <= -2.5 deg in the right ascension range 20 h <= R.A. <= 5 h. Redshifts have been obtained for the complete sample of all 833 galaxies in the Morphological Catalog of Galaxies with magnitudes brighter than m = 14.5 (corresponding approximately to m(Zwicky) = 15.0). This sample also includes three galaxies from other sources with more reliable magnitudes, satisfying this limit, and 29 fainter galaxies, usually companions of the galaxies in the magnitude limited sample. Our maps of a very large volume of nearby space demonstrate a variety of coherent large scale structures which include large voids, 20-50 h^-1^ Mpc in diameter and large walls at least 70 h^-1^ Mpc across.
- ID:
- ivo://CDS.VizieR/J/AJ/109/2368
- Title:
- Redshifts in First CfA Slice. III.
- Short Name:
- J/AJ/109/2368
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We have measured redshifts for 241 galaxies selected from the Zwicky catalog with magnitudes 15.6 or 15.7 in the region (26.5deg<=delta<=32.5deg, 8h<=alpha=<17h). This region is the original CfA "Slice of the Universe", which was complete to 15.5; now nearly all Zwicky-catalog galaxies in the region have measured redshifts. These somewhat fainter galaxies outline the same structures as the brighter ones. By examinating a sample of 27 galaxies within the most prominent void we find (1) the fraction of absorption-line galaxies is typical of regions outside the cores of rich clusters; and (2) the local morphology-density relation holds within the globally underdense void.
1044. Redshifts in LCDCS 0504
- ID:
- ivo://CDS.VizieR/J/A+A/566/A149
- Title:
- Redshifts in LCDCS 0504
- Short Name:
- J/A+A/566/A149
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Constraints on the mass distribution in high-redshift clusters of galaxies are currently not very strong. We aim to constrain the mass profile, M(r), and dynamical status of the z~0.8 LCDCS 0504 cluster of galaxies that is characterized by prominent giant gravitational arcs near its center. Our analysis is based on deep X-ray, optical, and infrared imaging as well as optical spectroscopy, collected with various instruments, which we complemented with archival data. We modeled the mass distribution of the cluster with three different mass density profiles, whose parameters were constrained by the strong lensing features of the inner cluster region, by the X-ray emission from the intracluster medium, and by the kinematics of 71 cluster members.
- ID:
- ivo://CDS.VizieR/J/ApJ/797/106
- Title:
- Redshifts in nine galaxy cluster fields
- Short Name:
- J/ApJ/797/106
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We use dense redshift surveys of nine galaxy clusters at z~0.2 to compare the galaxy distribution in each system with the projected matter distribution from weak lensing. By combining 2087 new MMT/Hectospec redshifts and the data in the literature, we construct spectroscopic samples within the region of weak-lensing maps of high (70%-89%) and uniform completeness.
- ID:
- ivo://CDS.VizieR/J/AJ/130/2012
- Title:
- Redshifts in SARS clusters
- Short Name:
- J/AJ/130/2012
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The Southern Abell Redshift Survey (SARS) contains 39 clusters of galaxies with redshifts in the range 0.0<z<0.31 and a median redshift depth of z{bar}=0.0845. SARS covers the region 0deg<delta<-65deg, alpha<5h, alpha>21h (while avoiding the LMC and SMC), with |b|>40{deg}. Cluster locations were chosen from the Abell and Abell-Corwin-Olowin catalogs, while galaxy positions were selected from the Automatic Plate Measuring Facility galaxy catalog with extinction-corrected magnitudes in the range 15<=bJ<19. SARS used the Las Campanas 2.5m du Pont telescope, observing either 65 or 128 objects concurrently over a 1.5deg^2^ field. New redshifts for 3440 galaxies are reported in the fields of these 39 clusters of galaxies.
- ID:
- ivo://CDS.VizieR/J/A+A/532/A57
- Title:
- Redshifts in supercluster SCL 2243-0935
- Short Name:
- J/A+A/532/A57
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- In archival 2.2m MPG-ESO/WFI data we discovered several mass peaks through weak gravitational lensing, forming a possible supercluster at redshift 0.45. Through wide-field imaging and spectroscopy we aim to identify the supercluster centre, confirm individual member clusters, and detect possible connecting filaments. Through multi-colour imaging with CFHT/Megaprime and INT/WFC we identify a population of early-type galaxies and use it to trace the supercluster network. EMMI/NTT multi-object spectroscopy is used to verify the initial shear-selected cluster candidates. We use weak gravitational lensing to obtain mass estimates for the supercluster centre and the filaments.
- ID:
- ivo://CDS.VizieR/J/AJ/122/2893
- Title:
- Redshifts in the Century Survey region
- Short Name:
- J/AJ/122/2893
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The Century Survey strip covers 102{deg}^2^ within the limits 8.5h<=RA<=16.5h, 29.0{deg}<=DE<=30.0{deg}, equinox B1950.0. The strip passes through the Corona Borealis supercluster and the outer region of the Coma cluster. Within the Century Survey region, we have measured 2410 redshifts that constitute four overlapping complete redshift surveys: (1) the original Century Survey of 1728 galaxies with Kron-Cousins (Kron, White, & Gascoigne, 1953ApJ...118..502K) R_ph_<=16.13 covering the entire strip (Geller et al., 1997AJ....114.2205G, hereafter OCS), (2) 507 galaxies with R_ph_<=16.4 in right ascension range 8h32min<=RA<=10h45min, equinox B1950.0, (hereafter DCS) (3) 1251 galaxies with absorption- and K-corrected R_CCDc_<=16.2 (where "c" indicates "corrected") covering the right ascension range 8.5h<=RA<=13.5h, equinox B1950.0 (Brown et al., 2001, Cat. <J/AJ/122/714>, hereafter RCS), and (4) 1255 galaxies with absorption- and K-corrected V_CCDc_<=16.7 also covering the right ascension range 8.5h<=RA<=13.5h, B1950.0 (Brown et al., 2001, Cat. <J/AJ/122/714>, hereafter VCS). All these redshift samples are more than 98% complete to the specified magnitude limit. We derived samples 1 and 2 from scans of the POSS1 red (E) plates calibrated with CCD photometry. We derived samples 3 and 4 from deep V and R CCD images covering the entire region. We include coarse morphological types for all the galaxies in sample 1. The distribution of (V-R)_CCD_ for each type corresponds appropriately with the classification.
- ID:
- ivo://CDS.VizieR/J/ApJ/783/52
- Title:
- Redshifts in the field of A383
- Short Name:
- J/ApJ/783/52
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Abell 383 is a famous rich cluster (z=0.1887) imaged extensively as a basis for intensive strong- and weak-lensing studies. Nonetheless, there are few spectroscopic observations. We enable dynamical analyses by measuring 2360 new redshifts for galaxies with r_Petro_{<=}20.5 and within 50' of the Brightest Cluster Galaxy (BCG; R.A._2000_=42.014125{deg},decl._2000_=-03.529228{deg}). We apply the caustic technique to identify 275 cluster members within 7h^-1^Mpc of the hierarchical cluster center. The BCG lies within -11+/-110km/s and 21+/-56 h^-1^kpc of the hierarchical cluster center; the velocity dispersion profile of the BCG appears to be an extension of the velocity dispersion profile based on cluster members. The distribution of cluster members on the sky corresponds impressively with the weak-lensing contours of Okabe et al. especially when the impact of foreground and background structure is included. The values of R_200_=1.22+/-0.01h^-1^Mpc and M_200_=(5.07+/-0.09)x10^14^h^-1^M_{sun}_ obtained by application of the caustic technique agree well with recent completely independent lensing measures. The caustic estimate extends direct measurement of the cluster mass profile to a radius of ~5h^-1^Mpc.
- ID:
- ivo://CDS.VizieR/J/AJ/131/2788
- Title:
- Redshifts in the SFQS survey
- Short Name:
- J/AJ/131/2788
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- In this paper we present the first results of a deep spectroscopic survey of faint quasars in the Sloan Digital Sky Survey (SDSS) Southern Survey, a deep survey carried out by repeatedly imaging a 270{deg}^2^ area. Quasar candidates were selected from the deep data with good completeness over 0<z<5 and 2-3mag fainter than the SDSS main survey. Spectroscopic follow-up was carried out on the 6.5m MMT with Hectospec. The preliminary sample of this SDSS faint quasar survey (SFQS) covers ~3.9{deg}^2^, contains 414 quasars, and reaches g=22.5.