Table information for 'smakced.main'


Table Description: SMAKCED infrared images and derived properties of early-type dwarf galaxies in the Virgo cluster.

This table is available for ADQL queries and through the TAP endpoint.

Resource Description:

The Stellar content, MAss and Kinematics of Cluster Early-type Dwarf galaxies (SMAKCED) project is a survey of 121 Virgo cluster early type galaxies. This service publishes deep near-infrared (H band) images obtained by SMAKCED together with resulting decompositions and other properties of the galaxies in the sample.

For a list of all services and tables belonging to this table's resource, see Information on resource 'A Near-infrared Census of the Multicomponent Stellar Structure of Early-type Dwarf Galaxies in the Virgo Cluster'

Citing this table

This table has an associated publication. If you use data from it, it may be appropriate to reference 2014ApJ...786..105J (ADS BibTeX entry for the publication) either in addition to or instead of the service reference.

To cite the table as such, we suggest the following BibTeX entry:

  title={A Near-infrared Census of the Multicomponent Stellar Structure of
Early-type Dwarf Galaxies in the Virgo Cluster},
  author={Janz, J. and Laurikainen, E. and Lisker, T. and Salo, H. and Peletier, R. F. and Niemi, S.-M. and Toloba, E. and Hensler, G. and Falcón-Barroso, J. and Boselli, A. and den Brok, M. and Hansson, K. S. A. and Meyer, H. T. and Ryś, A. and Paudel, S.},
  howpublished={{VO} resource provided by the {GAVO} Data Center}

Resource Documentation

The images are calibrated such that

mag_H = -2.5 log(counts)

(in the 2MASS photometric system) without the need for an additional zeropoint. Extinction correction according to 1998ApJ...500..525S is already applied to these values.


Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
accref Product key Access key for the data N/A meta.ref.url
owner Owner Owner of the data N/A N/A
embargo Embargo ends Date the data will become/became public a N/A
mime Type MIME type of the file served N/A meta.code.mime
accsize File size Size of the data in bytes byte VOX:Image_FileSize
centerAlpha Ctr. RA Approximate center of image, RA deg pos.eq.ra
centerDelta Ctr. Dec Approximate center of image, Dec deg pos.eq.dec
imageTitle Title Synthetic name of the image N/A meta.title
instId Instrument Identifier of the originating instrument N/A;instr
dateObs Approx. date Approximate observation date (essentially, month and year should be about right). NULL for archival material d time;obs.exposure
nAxes #axes Number of axes in data N/A pos.wcs.naxes
pixelSize Axes Lengths Number of pixels along each of the axes pixel pos.wcs.naxis
pixelScale Scales The pixel scale on each image axis deg/pixel pos.wcs.scale
refFrame Ref. Frame Coordinate system reference frame N/A pos.frame
wcs_equinox Equinox Equinox of the given coordinates yr time.equinox
wcs_projection Proj. FITS WCS projection type N/A pos.wcs.ctype
wcs_refPixel Ref. pixel WCS reference pixel pixel pos.wcs.crpix
wcs_refValues Ref. values World coordinates at WCS reference pixel deg pos.wcs.crval
wcs_cdmatrix CD matrix FITS WCS CDij matrix deg/pixel pos.wcs.cdmatrix
bandpassId Bandpass Freeform name of the bandpass used N/A instr.bandpass
bandpassUnit Bandpass unit Unit of bandpass specifications (always m). N/A N/A
bandpassRefval Band Ref. Characteristic quantity for the bandpass of the image m instr.bandpass;stat.median
bandpassHi Band upper Upper limit of the bandpass (in BandPass_Unit units) m instr.bandpass;stat.max
bandpassLo Band lower Lower limit of the bandpass (in BandPass_Unit units) m instr.bandpass;stat.min
pixflags P. Flags Flags specifying the processing done (C-original; F-resampled; Z-fluxes valid; X-not resampled; V-for display only N/A meta.code
coverage Coverage Field covered by the image deg N/A
OBJECT Galaxy name Common name of the observed galaxy. N/A;meta.main
raj2000 RA ICRS RA of galaxy center from asymmetry centering (unless specified otherwise in remarks). deg pos.eq.ra;meta.main
dej2000 Dec ICRS Declination of galaxy center from asymmetry centering (unless specified otherwise in remarks). deg pos.eq.dec;meta.main
exptime Exp. time Total integration time for the object (sum of exposure times of all images stacked; note that different telescopes were in use). s time.duration;obs.exposure
seeing Seeing Estimate for the seeing at observation time. arcsec instr.obsty.seeing
snr S/N Signal to noise ratio for a pixel at 2 r_e. N/A stat.snr
hmag m_H Total H-band magnitude of the galaxy N/A phot.mag;
r_e r_e Effective radius of the galaxy (semi-major axis of half-light aperture in H). arcsec phys.angSize
b_a b/a Axis raio at 2 r_e N/A phys.angSize;arith.ratio
concentration C Concentration index 5 log_80/r_20 as in 2000AJ....119.2645B N/A phys.size;arith.ratio
rho10 log ρ_10 Local projected number density of cluster galaxies. (see Appendix D in the source) log(deg**-2) src.density
remarks Remarks Morphological features from 2006AJ....132.2432L and other remarks N/A meta.note
moreinfo More Bibcodes of papers containing more information. N/A meta.ref
structgroup Group Structural Group (see 2012ApJ...745L..24J) resulting from the decomposition. N/A meta.code.class
simp_m m(simp) Integrated H-band brightness, simple model mag phot.mag;
simp_rc r_c(simp) Half-light radius, simple model arcsec phys.angSize;src
simp_n n(simp) Sérsic index, simple model N/A
simp_b_a b/a(simp) Axis ratio, simple model N/A phys.angSize;arith.ratio
inner_m m(inner) Integrated H-band brightness, inner component mag phot.mag;
inner_rc r_c(inner) Half-light radius, inner component arcsec phys.angSize;src
inner_n n(inner) Sérsic index, inner component N/A
inner_b_a b/a(inner) Axis ratio, inner component N/A phys.angSize;arith.ratio
outer_m m(outer) Integrated H-band brightness, global/outer component mag phot.mag;
outer_rc r_c(outer) Half-light radius, global/outer component arcsec phys.angSize;src
outer_n n(outer) Sérsic index, global/outer component N/A
outer_b_a b/a(outer) Axis ratio, global/outer component N/A phys.angSize;arith.ratio
simpdec_rff RFF(simpdec) Residual flux fraction (2006ApJ...644...30B) for the single decomposition N/A
simpdec_evi EVI(simpdec) Excess variance index (2011MNRAS.411.2439H) for single decomposition N/A
finaldec_rff RFF(finaldec) Residual flux fraction (2006ApJ...644...30B) for the final decomposition N/A
finaldec_evi EVI(finaldec) Excess variance index (2011MNRAS.411.2439H) for final decomposition N/A
compmorph Add. info Additional information on decomposition. N/A meta.note;src.morph

Columns that are parts of indices are marked like this.


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