Search

Start Over Subject catalogs
171. CCD Washington photometry of Antlia cluster
ID:
ivo://CDS.VizieR/J/MNRAS/497/1791
Title:
CCD Washington photometry of Antlia cluster
Short Name:
J/MNRAS/497/1791
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present an extension of our previous research on the early-type galaxy population of the Antlia cluster (d~35Mpc), achieving a total coverage of ~2.6deg^2^ and performing surface photometry for ~300 galaxies, 130 of which are new uncatalogued ones. Such new galaxies mainly fall in the low surface brightness (LSB) regime, but there are also some lenticulars (S0) which support the existence of unique functions that connect bright and dwarf galaxies in the scaling relations. We analyse the projected spatial distribution of galaxies up to a distance of ~800kpc from NGC 3268, the adopted centre, as well as the radial velocity distribution and the correlation between galaxy colour and effective radius with the projected spatial distribution. We also obtain the luminosity function of the early-type galaxies and the distribution of stellar masses using the T1-band magnitudes and adopted mass-luminosity ratios. Additionally, we correlate the central galaxy distribution with an X-ray emission map from the literature. Based on the analysis of the radial velocities and galaxy colour distributions, we find that galaxies redder than the colour-magnitude relation (CMR) have a velocity distribution strongly concentrated towards the values of the dominant galaxies and are homogeneously distributed throughout the cluster. Those bluer than the CMR, in turn, have a much more extended radial velocity distribution and are concentrated towards the centre of the cluster. We also identify 12 candidates to ultra diffuse galaxies (UDG), that seem to be split into two families, and speculate about their origins in the context of the cluster structure.
172. CDPP EPN-TAP server TAP service
ID:
ivo://cdpp/tap
Title:
CDPP EPN-TAP server TAP service
Short Name:
CDPP TAP
Date:
03 Jul 2024 15:47:27
Publisher:
CDPP - Centre de Données de la Physique des Plasmas
Description:
The CDPP EPN-TAP server's TAP end point. The Table Access Protocol (TAP) lets you execute queries against our database tables, inspect various metadata, and upload your own data. It is thus the VO's premier way to access public data holdings. Tables exposed through this endpoint include: epn_core from the amdadb schema, epn_core from the illu67p schema, columns, groups, key_columns, keys, schemas, tables from the tap_schema schema, epn_core from the transplanet schema.
173. CEDAG Catalogue of Clusters of Galaxies
ID:
ivo://CDS.VizieR/VII/88
Title:
CEDAG Catalogue of Clusters of Galaxies
Short Name:
VII/88
Date:
21 Oct 2021
Publisher:
CDS
Description:
This catalog contains for 10411 objects, the Abell, Zwicky, and Kalinkov numbers of groups of galaxies. In addition, it contains: Abell or Zwicky coordinates, the Abell or Zwicky numbers of the supercluster which contains each group, the diameter (Zwicky), the magnitude (Abell), the compactness (Zwicky), the distance of the group (both Abell and Zwicky), the richness (Abell) and the population (Zwicky).
174. Celestial Reference Frame at 24 and 43 GHz
ID:
ivo://CDS.VizieR/J/AJ/139/1695
Title:
Celestial Reference Frame at 24 and 43 GHz
Short Name:
J/AJ/139/1695
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present astrometric results for compact extragalactic objects observed with the Very Long Baseline Array at radio frequencies of 24 and 43GHz. Data were obtained from ten 24-hr observing sessions made over a five-year period. These observations were motivated by the need to extend the International Celestial Reference Frame (ICRF) to higher radio frequencies to enable improved deep space navigation after 2016 and to improve state-of-the-art astrometry. Source coordinates for 268 sources were estimated at 24GHz and for 131 sources at 43GHz.
175. Celestial Reference Frame at 24 and 43GHz. II
ID:
ivo://CDS.VizieR/J/AJ/139/1713
Title:
Celestial Reference Frame at 24 and 43GHz. II
Short Name:
J/AJ/139/1713
Date:
21 Oct 2021
Publisher:
CDS
Description:
We have measured the submilliarcsecond structure of 274 extragalactic sources at 24 and 43 GHz in order to assess their astrometric suitability for use in a high-frequency celestial reference frame (CRF). Ten sessions of observations with the Very Long Baseline Array have been conducted over the course of ~5 years, with a total of 1339 images produced for the 274 sources. There are several quantities that can be used to characterize the impact of intrinsic source structure on astrometric observations including the source flux density, the flux density variability, the source structure index, the source compactness, and the compactness variability.
176. Census of the Local Universe survey. I. CLU-Halpha
ID:
ivo://CDS.VizieR/J/ApJ/880/7
Title:
Census of the Local Universe survey. I. CLU-Halpha
Short Name:
J/ApJ/880/7
Date:
03 Nov 2021 07:51:08
Publisher:
CDS
Description:
We present the Census of the Local Universe (CLU) narrowband survey to search for emission-line (H{alpha}) galaxies. CLU-H{alpha} has imaged ~3{pi} of the sky (26470deg^2^) with four narrowband filters that probe a distance out to 200Mpc. We have obtained spectroscopic follow-up for galaxy candidates in 14 preliminary fields (101.6deg^2^) to characterize the limits and completeness of the survey. In these preliminary fields, CLU can identify emission lines down to an H{alpha} flux limit of 10^-14^erg/s/cm^2^ at 90% completeness, and recovers 83% (67%) of the H{alpha} flux from cataloged galaxies in our search volume at the {Sigma}=2.5 ({Sigma}=5) color excess levels. The contamination from galaxies with no emission lines is 61% (12%) for {Sigma}=2.5 ({Sigma}=5). Also, in the regions of overlap between our preliminary fields and previous emission-line surveys, we recover the majority of the galaxies found in previous surveys and identify an additional ~300 galaxies. In total, we find 90 galaxies with no previous distance information, several of which are interesting objects: 7 blue compact dwarfs, 1 green pea, and a Seyfert galaxy; we also identify a known planetary nebula. These objects show that the CLU-H{alpha} survey can be a discovery machine for objects in our own Galaxy and extreme galaxies out to intermediate redshifts. However, the majority of the CLU-H{alpha} galaxies identified in this work show properties consistent with normal star-forming galaxies. CLU-H{alpha} galaxies with new redshifts will be added to existing galaxy catalogs to focus the search for the electromagnetic counterpart to gravitational wave events.
177. CeSAM Virtual Observatory Server TAP service
ID:
ivo://lam.cesam/tap
Title:
CeSAM Virtual Observatory Server TAP service
Short Name:
CeSAM TAP
Date:
28 Apr 2022 21:55:18
Publisher:
The CeSAM VO team
Description:
The CeSAM Virtual Observatory Server's TAP end point. The Table Access Protocol (TAP) lets you execute queries against our database tables, inspect various metadata, and upload your own data. It is thus the VO's premier way to access public data holdings. Tables exposed through this endpoint include: main from the aspic_6df schema, g02, g09g12g15 from the aspic_gama schema, main from the aspic_muse_wide schema, w1, w1_video, w4 from the aspic_vipers schema, cosmos, ecdfs from the aspic_vuds schema, catalogue, spectra from the el_cosmos_dr1 schema, spectra from the gama_dr3 schema, obscore from the ivoa schema, spectra from the muse_wide_dr1 schema, bolshoi2022, uchuu2022 from the sides schema, columns, groups, key_columns, keys, schemas, tables from the tap_schema schema, spectra from the vipers_dr2 schema, spectra from the vuds_dr1 schema, spectra from the zcosmos_20k schema.
178. CFHQSIR survey
ID:
ivo://CDS.VizieR/J/A+A/616/A55
Title:
CFHQSIR survey
Short Name:
J/A+A/616/A55
Date:
21 Oct 2021
Publisher:
CDS
Description:
The Canada-France-Hawaii Telescope Legacy Survey (CFHTLS) has been conducted over a five-year period at the CFHT with the MegaCam instrument, totaling 450 nights of observations. The Wide Synoptic Survey is one component of the CFHTLS, covering 155 square degrees in four patches of 23 to 65 square degrees through the whole MegaCam filter set (u*, g', r', i', z') down to i'_{AB} = 24.5. With the motivation of searching for high-redshift quasars at redshifts above 6.5, we extend the multi-wavelength CFHTLS-Wide data in the Y-band down to magnitudes of {sim} 22.5 for point sources (5{sigma}). We observed the four CFHTLS-Wide fields (except one quarter of the W3 field) in the Y-band with the WIRCam instrument (Wide-field InfraRed Camera) at the CFHT. Each field was visited twice, at least three weeks apart. Each visit consisted of two dithered exposures. The images are reduced with the Elixir software used for the CFHTLS and modified to account for the properties of near-InfraRed (IR) data. Two series of image stacks are subsequently produced: four-image stacks for each WIRCam pointing, and one-square- degree tiles matched to the format of the CFHTLS data release. Photometric calibration is performed on stars by fitting stellar spectra to their CFHTLS photometric data and extrapolating their Y-band magnitudes. After corrections accounting for correlated noise, we measure a limiting magnitude of Y_{AB}~=22.4 for point sources (5{sigma}) in an aperture diameter of 0.93 arcsecs, over 130 square degrees. We produce a multi-wavelength catalogue combining the CFHTLS-Wide optical data with our CFHQSIR (Canada-France High-z quasar survey in the near-InfraRed) Y-band data. We derive the Y-band number counts and compare them to the Vista Deep Extragalactic Observations survey (VIDEO). We find that the addition of the CFHQSIR Y-band data to the CFHTLS optical data increases the accuracy of photometric redshifts and reduces the outlier rate from 13.8% to 8.8% in the redshift range 1.05<~z<~1.2. The images and the catalogue for 8.6 million sources down to [(z'>=23.5) {lor} (Y>=23.0)] are released and available at the following URL: http://apps.canfar.net/storage/list/cjw/cfhqsir
179. Chandra Deep Field-South ATLAS 5.5GHz DR2
ID:
ivo://CDS.VizieR/J/MNRAS/454/952
Title:
Chandra Deep Field-South ATLAS 5.5GHz DR2
Short Name:
J/MNRAS/454/952
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present a new image of the 5.5GHz radio emission from the extended Chandra Deep Field South. Deep radio observations at 5.5GHz were obtained in 2010 and presented in the first data release. A further 76h of integration has since been obtained, nearly doubling the integration time. This paper presents a new analysis of all the data. The new image reaches 8.6{mu}Jy rms, an improvement of about 40% in sensitivity. We present a new catalogue of 5.5GHz sources, identifying 212 source components, roughly 50% more than were detected in the first data release. Source counts derived from this sample are consistent with those reported in the literature for S_5.5GHz_>0.1mJy but significantly lower than published values in the lowest flux density bins (S_5.5GHz_<0.1mJy), where we have more detected sources and improved statistical reliability. The 5.5GHz radio sources were matched to 1.4GHz sources in the literature and we find a mean spectral index of -0.35+/-0.10 for S_5.5GHz_>0.5mJy, consistent with the flattening of the spectral index observed in 5GHz sub-mJy samples. The median spectral index of the whole sample is {alpha}_med_=-0.58, indicating that these observations may be starting to probe the star-forming population. However, even at the faintest levels (0.05<S_5.5GHz_<0.1mJy), 39% of the 5.5GHz sources have flat or inverted radio spectra. Four flux density measurements from our data, across the full 4.5-6.5GHz bandwidth, are combined with those from literature and we find 10% of sources (S_5.5GHz_>~0.1mJy) show significant curvature in their radio spectral energy distribution spanning 1.4-9GHz.
180. ChiVO TAP service
ID:
ivo://chivo/tap
Title:
ChiVO TAP service
Short Name:
ChiVO TAP
Date:
20 Oct 2017 18:56:31
Publisher:
ChiVO
Description:
The ChiVO's TAP end point. The Table Access Protocol (TAP) lets you execute queries against our database tables, inspect various metadata, and upload your own data. It is thus the VO's premier way to access public data holdings. Tables exposed through this endpoint include: alma_fits from the alma_fits schema, m83_obs from the m83_test1 schema, m83_obs from the m83_data schema, hd163296band6 from the hd163296band6 schema, columns, groups, key_columns, keys, schemas, tables from the tap_schema schema, main from the arihip schema, main from the tgas schema, dr1 from the gaia schema, data from the openngc schema, emptyobscore, obscore from the ivoa schema.

Limit your search

more »

more »

more »

  • 2967

more »