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	VII/112	14574		RC2 Catalogue (de Vaucouleurs+ 1976) ReadMe+ftp Similar Catalogs Post annotation
1.	VII/112/catalog		The RC2 catalogue (4364 rows)

Simple Constraint List Of Constraints

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Column

Constraint

Explain (UCD)

recno

Record number within the original table (starting from 1) (meta.record)

Name

(char)

RC2 identification (NGC, IC, or anonymous) (meta.id;meta.main)

m_Name

(char)

Component identification (A, B, C, etc.) (Note 1) (meta.code.multip)

RA1950

"h:m:s"

Hours RA, 1950.0 (pos.eq.ra;meta.main)

DE1950

"d:m:s"

Degrees Dec, 1950.0 (pos.eq.dec;meta.main)

GLON

deg

Galactic longitude (pos.galactic.lon)

SGLON

deg

Supergalactic longitude (pos.supergalactic.lon)

MType

(char)

Revised morphological Type (Table 2) (Note 9) (src.morph.type)

Hubble

(char)

Numerical Hubble Sequence Index T (Table 3) (Note 9) (meta.code;spect.index;obs.sequence)

n_Hubble

(char)

[*RP$] Remark on Hubble Sequence Index (Note 8) (meta.note)

Plate

(char)

Source of plate (Table 4) (Note 9) (meta.ref;pos.frame;instr.plate)

ALL cols

r_MType

(char)

Morphological type author code (Table 5) (Note 9) (meta.note)

Yerkes_1

(char)

Yerkes list 1 type and color classes (Note 6) (meta.note;phot.color)

Byurkan

⁽ⁿ⁾ [1/5] Nuclear type in Byurkan system (Note 2) (meta.note)

n_Byurkan

(char)

[*$S2-5] Note on Byurkan nucleus type (Note 2) (meta.note)

logD25

[0.1arcmin]

⁽ⁿ⁾ Major isophotal diameter, log(D_25) (phys.angSize)

logR25

⁽ⁿ⁾ Ratio major to minor diameter, log(R_25) (phys.angSize;arith.ratio)

logD(0)25

[0.1arcmin]

⁽ⁿ⁾ Face-on major isophotal diameter (phys.angSize)

logAe

[0.1arcmin]

⁽ⁿ⁾ Effective aperture diameter, log(Ae) (phys.angSize;instr.fov)

u_logAe

(char)

[*$] '*'=uncertain, '$'=doubtful (meta.code.error)

(char)

Object identifications (Note 9) (meta.id)

precRAm

0.01min/yr

Centennial precession in RA, minutes (pos.precess;pos.eq.ra)

precDEm

0.01arcmin/yr

Centennial precession in DE, arcminutes (pos.precess;pos.eq.dec)

GLAT

deg

Galactic latitude (pos.galactic.lat)

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

SGLAT

deg

Supergalactic latitude (pos.supergalactic.lat)

DDOType

(char)

David Dunlap Obs. (van den Bergh) type (Note 7) (meta.note)

DDOClass

⁽ⁿ⁾ David Dunlap Obs. luminosity class (Note 7) (src.class.luminosity)

u_DDOClass

(char)

[*$] '*'=uncertain, '$'=doubtful (meta.code.error)

Weight

⁽ⁿ⁾ ]0/5] Plate material weight (Note 9) (stat.weight;phys.atmol.weight;instr.plate)

Yerkes_2

(char)

Yerkes list 2 type and nuclear class (Note 6) (src.morph.type)

RC1

(char)

RC1 nuclear class (Note 9) (meta.code.class)

e_logD25

[0.1arcmin]

⁽ⁿ⁾ Mean error of logD25 (stat.error)

e_logR25

⁽ⁿ⁾ Mean error of logR25 (stat.error)

[0.1arcmin]

⁽ⁿ⁾ Corrected log(D(0)25) for galactic extinc. (arith.zp)

e_logAe

[0.1arcmin]

⁽ⁿ⁾ Mean error of log(Ae) (stat.error)

Hmag

mag

⁽ⁿ⁾ Harvard photographic magnitude, mH (phot.mag;em.opt)

u_Hmag

(char)

[*] if Hmag uncertain (meta.code.error)

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

mag

⁽ⁿ⁾ Total asymptotic B magnitude (BT) (phot.mag;em.opt.B)

n_BT

(char)

[*S] Flag on BT, see note (Note 3) (meta.note)

SuBr

mag/arcsec2

⁽ⁿ⁾ Mean B surface brightness within Ae (Note 9) (phot.mag.sb;em.opt.B)

Extinct

mag

⁽ⁿ⁾ Galactic extinction in B system (A_B) (Note 9) (phys.absorption.gal)

(B-V)T

mag

⁽ⁿ⁾ Asymptotic color index (Note 9) (phot.color;em.opt.B;em.opt.V)

n_(B-V)T

(char)

[*] Flag on (B-V)T, see comment (Note 3) (meta.note)

(U-B)T

mag

⁽ⁿ⁾ Asymptotic color index (Note 9) (phot.color;em.opt.U;em.opt.B)

n_(U-B)T

(char)

[*] Flag on (U-B)T, see comment (Note 3) (meta.note)

(B-V)Ae

mag

⁽ⁿ⁾ Effective aperture color index (Note 9) (phot.color;em.opt.B;em.opt.V)

n_(B-V)Ae

(char)

[*] Flag on (B-V)Ae, see comment (Note 3) (meta.note)

(U-B)Ae

mag

⁽ⁿ⁾ Effective aperture color index (Note 9) (phot.color;em.opt.U;em.opt.B)

n_(U-B)Ae

(char)

[*] Flag on (U-B)Ae, see comment (Note 3) (meta.note)

B-V

mag

⁽ⁿ⁾ Total B-V color index, corrected (Note 9) (phot.color;em.opt.B;em.opt.V)

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

logS_R

[10mJy]

⁽ⁿ⁾ Radio continuum flux near 1.4GHz (21cm) (phot.flux.density;em.radio.750-1500MHz)

n_logS_R

(char)

[$+*] Conditional code for logS_R (Note 4) (meta.note)

SpIndex1

⁽ⁿ⁾ Spectral index, α- for ν < ν_R (spect.index)

u_SpIndex1

(char)

[$*] '*'=uncertain, '$'=very uncertain (meta.code.error)

logS_H

[10-22W/m2]

⁽ⁿ⁾ Integrated HI flux density (phot.flux.density;em.line.HI)

n_logS_H

(char)

[$+*] Conditional code for logS_H (Note 4) (meta.note)

RIndex

mag

⁽ⁿ⁾ Corrected radio index (RI) (Note 9) (spect.index;em.radio)

u_RIndex

(char)

[$] '$' for doubtful RIndex value (meta.code.error)

RadVel

km/s

⁽ⁿ⁾ Observed Radial velocity (cz) (spect.dopplerVeloc)

u_RadVel

(char)

[*] '*' if discrepant RadVel values (meta.code.error)

RadVel0

km/s

⁽ⁿ⁾ Radial velocity corrected for solar motion (spect.dopplerVeloc)

Appendix

(char)

[PST ] Appendices codes, see comment (Note 5) (meta.ref;pos.frame)

Zwicky

(char)

Zwicky identifications (meta.id)

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

HmagCorr

mag

⁽ⁿ⁾ Corrected Harvard photog. magnitude (Note 9) (phot.mag;em.opt.B)

e_BT

mag

⁽ⁿ⁾ Estimated mean error of BT (Note 9) (stat.error;phot.mag;em.opt.B)

SuBrAv

mag/arcsec2

⁽ⁿ⁾ Average surface brightness (Note 9) (phot.mag.sb)

BT0

mag

⁽ⁿ⁾ Corrected face-on magnitude (Note 9) (phot.mag;em.opt.B)

e_(B-V)T

mag

⁽ⁿ⁾ Mean error of asymptotic color (Note 9) (stat.error)

e_(U-B)T

mag

⁽ⁿ⁾ Mean error of asymptotic color (Note 9) (stat.error)

e_(B-V)Ae

mag

⁽ⁿ⁾ Mean error of effective color (Note 9) (stat.error)

e_(U-B)Ae

mag

⁽ⁿ⁾ Mean error of effective color (Note 9) (stat.error)

(U-B)T0

⁽ⁿ⁾ Total corrected U-B color index (Note 9) (phot.color;em.opt.U;em.opt.B)

o_SpIndex1

⁽ⁿ⁾ Number of radio continuum measurements (meta.number)

o_logS_R

⁽ⁿ⁾ Number of radio measurements for logS_R (meta.number)

o_SpIndex2

⁽ⁿ⁾ Number of radio continuum measurements (meta.number)

SpIndex2

⁽ⁿ⁾ Spectral index, α+ for ν > ν_R (spect.index)

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

u_SpIndex2

(char)

[$*] '*'=uncertain, '$'=very uncertain (meta.code.error)

o_logS_H

⁽ⁿ⁾ Number of 21cm emission line observations (meta.number)

A21

mag

⁽ⁿ⁾ Self-absorption at 21 cm (1.4GHz) (phot.mag;em.radio.750-1500MHz)

mag

⁽ⁿ⁾ Neutral hydrogen index (Note 9) (phot.color)

u_HI

(char)

[$] '$' if HI is doubtful (meta.code.error)

o_RadVelR

⁽ⁿ⁾ Number of radio observations for RadVel (meta.number)

o_RadVelO

⁽ⁿ⁾ Number of optical observations for RadVel (meta.number)

e_RadVel

km/s

⁽ⁿ⁾ Radial velocity mean error (stat.error)

DVelSun

km/s

Solar motion correction, delta V (arith.factor;phys.veloc;pos.cartesian.y)

_RA.icrs

"h:m:s"

⁽ⁿ⁾Right ascension (ICRS) (computed by VizieR, not part of the original data) (pos.eq.ra)

_DE.icrs

"d:m:s"

⁽ⁿ⁾Declination (ICRS) (computed by VizieR, not part of the original data) (pos.eq.dec)

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

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