Smithsonian Astrophysical Observatory Telescope Data Center
Description:
This catalog contains derived information and access to spectra for a
catalog of objects in the field of M31, drawn from the study of star
clusters, HII regions, PNe and individual stars in M31 done with
Hectospec on the MMT by Nelson Caldwell and a host of others.
Stripe 82 Photometric Redshifts from SDSS Coadditions
Short Name:
s82 coadd cone
Date:
27 Dec 2024 08:31:03
Publisher:
The GAVO DC team
Description:
This survey gives photometric redshifts of objects within 275 deg²
(−50◦ < α < 60◦ and −1.◦25 < δ < +1.◦25) centered on the Celestial
Equator. Each piece of sky has ∼20 runs of repeated scanning by the
SDSS camera contributing and thus reaches ∼2 mag fainter than the SDSS
single pass data, i.e., to r ∼ 23.5 for galaxies.
WFAU, Institute for Astronomy, University of Edinburgh
Description:
The SuperCOSMOS data held in the SSA primarily originate from scans of Palomar and UK Schmidt blue, red and near-IR southern sky surveys. The ESO Schmidt R (dec < -17.5) and Palomar POSS-I E (dec > -17.5) surveys have also been scanned and provide a 1st epoch red measurement. Further details on the surveys, the scanning process and the raw parameters extracted can be found on the further information link. The SSA is housed in a relational database running on Microsoft SQL Server 2000. Data are stored in tables which are inter-linked via reference ID numbers. In addition to the astronomical object catalogues these tables also contain information on the plates that were scanned, survey field centres and calibration coefficients. Most user science queries will only need to access the SOURCE table or to a lesser extent the DETECTION table.
The SuperCOSMOS data primarily originate from scans of the UK Schmidt
and Palomar POSS II blue, red and near-IR sky surveys. The ESO Schmidt
R (dec < -17.5) and Palomar POSS-I E (dec > -17.5) surveys have also
been scanned and provide an early (1st) epoch red measurement.
Mirrored here is the source table containing four-plate multi-colour,
multi-epoch data which are merged into a single source catalogue for
general science exploitation. Within the GAVO DC, some column names
have been adapted to local customs (primarily positions, proper
motions).
The 4XMM-DR14 catalogue contains source detections drawn from 13864 XMM-Newton EPIC observations,
covering an energy interval from 0.2 keV to 12 keV.
These observations were made between 2000 February 3 and 2023 December 31 and all datasets
were publicly available by 2023 December 31, but not all public observations are included i
n this catalogue.
The median flux in the total photon energy band (0.2 - 12 keV) of the catalogue detections
is ~ 2.2 × 10-14 erg cm-2 s-1; in the soft energy band (0.2 - 2 keV) the median flux
is ~ 5.2 × 10-15, and in the hard band (2 - 12 keV) it is ~ 1.2 × 10-14.
About 23% of the sources have total fluxes below 1 × 10-14 erg cm-2 s-1.
About a tenth of the observations have features that may cause spurious detections
(mainly the wings of bright sources and large extended emission), and it is strongly
recommended to use a filter (both per source, based on the summary flag column,
and per observation, based on the observation class column).
The TAP server for Konkoly'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: columns, groups, key_columns, keys, schemas, tables from the tap_schema schema, epn_core from the sbnaf schema.
