Information on Service 'SMAKCED Census of Structure in Early-type Dwarf Galaxies'

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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 service's resource, see Information on resource 'A Near-infrared Census of the Multicomponent Stellar Structure of Early-type Dwarf Galaxies in the Virgo Cluster'

Service 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.

Overview

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This service is published as follows:

local means it is listed on our front page, ivo_managed means it has a record in the VO registry, gavo means it is within GAVO's service registry.

Other services provided on the underlying data include:

Input Fields

The following fields are available to provide input to the service (with some renderers, some of these fields may be unavailable):

NameTable Head DescriptionUnitUCD
DEC Delta (ICRS) Declination (ICRS decimal) deg pos.eq.dec
hmag m_H Total H-band magnitude of the galaxy N/A phot.mag;em.ir.H
hscs_pos Position/Name Coordinates (as h m s, d m s or decimal degrees), or SIMBAD-resolvable object N/A N/A
hscs_sr Search radius Search radius in arcminutes N/A N/A
MAXREC Match limit Maximum number of records returned. Pass 0 to retrieve service parameters. N/A N/A
object Target Object VCC identifier (like 'VCC0009') N/A meta.name
r_e r_e Effective radius of the galaxy (semi-major axis of half-light aperture in H). arcsec phys.angSize
RA Alpha (ICRS) Right Ascension (ICRS decimal) deg pos.eq.ra
RESPONSEFORMAT Output Format File format requested for output. N/A meta.code.mime
SR Search Radius Search radius deg N/A
VERB Verbosity Exhaustiveness of column selection. VERB=1 only returns the most important columns, VERB=2 selects the columns deemed useful to the average user, VERB=3 returns a table with all available columns. N/A N/A

Default Output Fields

The following fields are contained in the output by default. More fields may be available for selection; these would be given below in the VOTable output fields.

NameTable Head DescriptionUnitUCD
_r Dist. Distance to cone center deg pos.distance
accref Product key Access key for the data N/A N/A
b_a b/a Axis raio at 2 r_e N/A phys.angSize;arith.ratio
compmorph Add. info Additional information on decomposition. N/A meta.note;src.morph
concentration C Concentration index 5 log_80/r_20 as in 2000AJ....119.2645B N/A phys.size;arith.ratio
dateObs Approx. date Approximate observation date (essentially, month and year should be about right). NULL for archival material d VOX:Image_MJDateObs
decomp Decomp Link to decomposition as produced by the authors. N/A meta.ref.url
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
hmag m_H Total H-band magnitude of the galaxy N/A phot.mag;em.ir.H
inner_b_a b/a(inner) Axis ratio, inner component N/A phys.angSize;arith.ratio
inner_m m(inner) Integrated H-band brightness, inner component mag phot.mag;em.ir.H
inner_n n(inner) Sérsic index, inner component N/A stat.fit.param
inner_rc r_c(inner) Half-light radius, inner component arcsec phys.angSize;src
instId Instrument Identifier of the originating instrument N/A INST_ID
moreinfo More Bibcodes of papers containing more information. N/A meta.ref
OBJECT Galaxy name Common name of the observed galaxy. N/A meta.id;meta.main
outer_b_a b/a(outer) Axis ratio, global/outer component N/A phys.angSize;arith.ratio
outer_m m(outer) Integrated H-band brightness, global/outer component mag phot.mag;em.ir.H
outer_n n(outer) Sérsic index, global/outer component N/A stat.fit.param
outer_rc r_c(outer) Half-light radius, global/outer component arcsec phys.angSize;src
r_e r_e Effective radius of the galaxy (semi-major axis of half-light aperture in H). arcsec phys.angSize
raj2000 RA ICRS RA of galaxy center from asymmetry centering (unless specified otherwise in remarks). deg pos.eq.ra;meta.main
remarks Remarks Morphological features from 2006AJ....132.2432L and other remarks N/A meta.note
rho10 log ρ_10 Local projected number density of cluster galaxies. (see Appendix D in the source) log(deg**-2) src.density
simp_b_a b/a(simp) Axis ratio, simple model N/A phys.angSize;arith.ratio
simp_m m(simp) Integrated H-band brightness, simple model mag phot.mag;em.ir.H
simp_n n(simp) Sérsic index, simple model N/A stat.fit.param
simp_rc r_c(simp) Half-light radius, simple model arcsec phys.angSize;src
structgroup Group Structural Group (see 2012ApJ...745L..24J) resulting from the decomposition. N/A meta.code.class

VOTable Output Fields

The following fields are available in VOTable output. The verbosity level is a number intended to represent the relative importance of the field on a scale of 1 to 30. The services take a VERB argument. A field is included in the output if their verbosity level is less or equal VERB*10.

NameTable Head DescriptionUnitUCD Verb. Level
accref Product key Access key for the data N/A N/A 1
dateObs Approx. date Approximate observation date (essentially, month and year should be about right). NULL for archival material d VOX:Image_MJDateObs 1
raj2000 RA ICRS RA of galaxy center from asymmetry centering (unless specified otherwise in remarks). deg pos.eq.ra;meta.main 9
dej2000 Dec ICRS Declination of galaxy center from asymmetry centering (unless specified otherwise in remarks). deg pos.eq.dec;meta.main 9
decomp Decomp Link to decomposition as produced by the authors. N/A meta.ref.url 10
_r Dist. Distance to cone center deg pos.distance 10
OBJECT Galaxy name Common name of the observed galaxy. N/A meta.id;meta.main 15
structgroup Group Structural Group (see 2012ApJ...745L..24J) resulting from the decomposition. N/A meta.code.class 15
hmag m_H Total H-band magnitude of the galaxy N/A phot.mag;em.ir.H 15
r_e r_e Effective radius of the galaxy (semi-major axis of half-light aperture in H). arcsec phys.angSize 15
b_a b/a Axis raio at 2 r_e N/A phys.angSize;arith.ratio 15
instId Instrument Identifier of the originating instrument N/A INST_ID 15
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 15
concentration C Concentration index 5 log_80/r_20 as in 2000AJ....119.2645B N/A phys.size;arith.ratio 15
rho10 log ρ_10 Local projected number density of cluster galaxies. (see Appendix D in the source) log(deg**-2) src.density 15
remarks Remarks Morphological features from 2006AJ....132.2432L and other remarks N/A meta.note 15
compmorph Add. info Additional information on decomposition. N/A meta.note;src.morph 17
simp_m m(simp) Integrated H-band brightness, simple model mag phot.mag;em.ir.H 19
simp_rc r_c(simp) Half-light radius, simple model arcsec phys.angSize;src 19
simp_n n(simp) Sérsic index, simple model N/A stat.fit.param 19
simp_b_a b/a(simp) Axis ratio, simple model N/A phys.angSize;arith.ratio 19
inner_m m(inner) Integrated H-band brightness, inner component mag phot.mag;em.ir.H 19
inner_rc r_c(inner) Half-light radius, inner component arcsec phys.angSize;src 19
inner_n n(inner) Sérsic index, inner component N/A stat.fit.param 19
inner_b_a b/a(inner) Axis ratio, inner component N/A phys.angSize;arith.ratio 19
outer_m m(outer) Integrated H-band brightness, global/outer component mag phot.mag;em.ir.H 19
outer_rc r_c(outer) Half-light radius, global/outer component arcsec phys.angSize;src 19
outer_n n(outer) Sérsic index, global/outer component N/A stat.fit.param 19
outer_b_a b/a(outer) Axis ratio, global/outer component N/A phys.angSize;arith.ratio 19
moreinfo More Bibcodes of papers containing more information. N/A meta.ref 20

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