DEEP3 Galaxy Redshift Survey

 

Each entry in the redshift catalog is described by 24 tags. In the ASCII version of the catalog, each tag comprises a space-deliminated column. Note that there can be multiple entries in the redshift catalog for a given object. Each entry corresponds to a particular observation of that object designated by the DEIMOS slitmask (given by MASK), the slit number on the mask (SLIT), and the date of observation (MJD). Below, we provide a basic description of each tag. Note that in most instances (e.g., when computing rest-frame quantities) one should use the heliocentric-corrected redshift value (ZHELIO) versus the observed value (Z).

Catalog Tag

OBJNO

RA

DEC

MAGB

MAGR

MAGI

PGAL

SFD_EBV

CLASS

SUBCLASS

OBJNAME

MASKNAME

SLITNAME

DATE

MJD

Z

ZHELIO

Z_ERR

RCHI2

DOF

VDISP

VDISP_ERR

ZQUALITY

EGSFLAG

COMMENT

M_B

UB_0

Data Type

LONG

DOUBLE

DOUBLE

FLOAT

FLOAT

FLOAT

FLOAT

FLOAT

STRING

STRING

STRING

STRING

STRING

STRING

FLOAT

FLOAT

FLOAT

FLOAT

FLOAT

LONG

FLOAT

FLOAT

INT

LONG

STRING

FLOAT

FLOAT

Brief Description

DEEP2 object number

Right Ascension (in decimal degrees, J2000)

Declination (in decimal degrees, J2000)

CFHT B-band magnitude (AB) from Coil et al. 2004

CFHT R-band magnitude (AB) from Coil et al. 2004

CFHT I-band magnitude (AB) from Coil et al. 2004

the probability (0 - 1) that the sources is a galaxy for unresolved galaxies, 3 if resolved

E(B-V) from Schlegel, Finkbeiner, and Davis dust map

type of best-fitting template (e.g., GALAXY or STAR)

coarse classification for stellar templates

the 8-digit DEEP2 object id (same as OBJNO)

the DEEP2/DEEP3 slitmask number on which the object was observed

the slitlet number (on mask MASKNAME) in which the object was placed

Date on which the mask was observed (YYYY-MM-DD)

Modified Julian date of observation

observed best-fitting redshift

redshift corrected for heliocentric motion

redshift error

reduced chi-squared value for the redshift fit

degrees of freedom for redshift fit

velocity dispersion in km/s

error in velocity dispersion

redshift quality code, Q

flag denoting membership in a particular target list

comment field

absolute B-band magnitude (AB, h = 1) from Willmer et al. (2006)

rest-frame U-B color (AB) from Willmer et al. (2006)

For more information on the MAGB, MAGR, MAGI, PGAL, and SFD_EBV tags, refer

to Coil et al. (2004) and the on-line documentation for the DEEP2 photometric catalogs.

The DEEP2/DEEP3 Redshift Catalog Tags