glossary for RESOLVE DR3 searchable online database
Notes:
(1)The Eckert et al. (2016, 2017) group catalogs are defined for the luminosity-complete sample defined by the FL_insample flag, so represent the most inclusive group catalog data for RESOLVE. Eckert et al. defined groups both with and without extra false-pair splitting; DR3 includes both, with the group properties involving false-pair splitting designated "E17". To avoid confusion with the stellar- and baryonic-mass limited group catalogs of Stark et al. (2016), also found in this database, DR3 omits the Eckert et al. determinations of group-integrated stellar mass, group-integrated baryonic mass, and halo mass based on group stellar mass. Finally, DR3 includes group assignment data for RESOLVE-B galaxies below the luminosity floor ("associated" to groups after group-finding and halo mass determination; see Eckert et al. 2016).
(2) Hood et al. (2018) tabulated SFRs that are included in DR3, however, we caution that these will be superseded in future work based on improved photometry and the addition of internal extinction corrections.
| parameter | unit | description |
|---|---|---|
| name | RESOLVE galaxy identifier | |
| RAdeg | deg | Right Ascension of photometric center in decimal degrees |
| DEdeg | deg | Declination of photometric center in decimal degrees |
| cz | km/s | Local group corrected velocity of galaxy |
| Grpcz | km/s | Velocity of group center, adopted galaxy velocity for survey membership |
| absrMag | mag | Absolute SDSS r-band magnitude (foreground extinction included) |
| umag | mag | Apparent SDSS u-band magnitude (provided without foreground extinction corrections) |
| e_umag | mag | Error in umag |
| gmag | mag | Apparent SDSS g-band magnitude (provided without foreground extinction corrections) |
| e_gmag | mag | Error in gmag |
| rmag | mag | Apparent SDSS r-band magnitude (provided without foreground extinction corrections) |
| e_rmag | mag | Error in rmag |
| imag | mag | Apparent SDSS i-band magnitude (provided without foreground extinction corrections) |
| e_imag | mag | Error in imag |
| zmag | mag | Apparent SDSS z-band magnitude (provided without foreground extinction corrections) |
| e_zmag | mag | Error in zmag |
| NUVmag | mag | Apparent GALEX NUV-band magnitude (provided without foreground extinction corrections) |
| e_NUVmag | mag | Error in NUVmag |
| uvm2mag | mag | Apparent Swift uvm2-band magnitude (provided without foreground extinction corrections) |
| e_uvm2mag | mag | Error in uvm2mag |
| 2Jmag | mag | Apparent 2MASS J-band magnitude (provided without foreground extinction corrections) |
| e_2Jmag | mag | Error in 2Jmag |
| 2Hmag | mag | Apparent 2MASS H-band magnitude (provided without foreground extinction corrections) |
| e_2Hmag | mag | Error in 2Hmag |
| 2Kmag | mag | Apparent 2MASS K-band magnitude (provided without foreground extinction corrections) |
| e_2Kmag | mag | Error in 2Kmag |
| UYmag | mag | Apparent UKIDSS Y-band magnitude (provided without foreground extinction corrections) |
| e_UYmag | mag | Error in UYmag |
| UHmag | mag | Apparent UKIDSS H-band magnitude (provided without foreground extinction corrections) |
| e_UHmag | mag | Error in UHmag |
| UKmag | mag | Apparent UKIDSS K-band magnitude (provided without foreground extinction corrections) |
| e_UKmag | mag | Error in UKmag |
| b_a | axial ratio b/a | |
| R50 | arcsec | The half-light radius in r band |
| R90 | arcsec | The 90%-light radius in r band |
| dgr | mag | The (g-r) color gradient |
| modelu_r | mag | SED modeled (u-r) color (foreground corrections and k-corrections implicity included) |
| modelu_i | mag | SED modeled (u-i) color (foreground corrections and k-corrections implicity included) |
| modelu_j | mag | SED modeled (u-J) color (foreground corrections and k-corrections implicity included) |
| modelu_k | mag | SED modeled (u-K) color (foreground corrections and k-corrections implicity included) |
| modelg_r | mag | SED modeled (g-r) color (foreground corrections and k-corrections implicity included) |
| modelg_i | mag | SED modeled (g-i) color (foreground corrections and k-corrections implicity included) |
| modelg_J | mag | SED modeled (g-J) color (foreground corrections and k-corrections implicity included) |
| modelg_K | mag | SED modeled (g-K) color (foreground corrections and k-corrections implicity included) |
| modelu_rcorr | mag | SED modeled (u-r) color including internal extinction correction as well as foreground corrections and k-corrections |
| logMstar | log(Msun) | Log stellar mass |
| mu_delta | log(Msun/kpc^2) | Proxy for galaxy morphology: stellar surface mass density within R50 minus stellar surface mass density between R50 and R90 (see Kannappan et al. 2013 for details) |
| sfr_H18 | Msun/yr | Star formation rate of each galaxy calculated from the Galex NUV band using the calibration from Wilkins et al. (2012). Note that no internal extinction correction has been included. |
| extu | mag | Foreground extinction in u band |
| extg | mag | Foreground extinction in r band |
| extr | mag | Foreground extinction in r band |
| exti | mag | Foreground extinction in i band |
| extz | mag | Foreground extinction in z band |
| extnuv | mag | Foreground extinction in NUV band |
| extuvm2 | mag | Foreground extinction in uvm2 band |
| exty | mag | Foreground extinction in Y band |
| extj | mag | Foreground extinction in J band |
| exth | mag | Foreground extinction in H band |
| extk | mag | Foreground extinction in K band |
| FL_insample | Flag for galaxies brighter than -17.33 (A-semester) or -17.0 (B-semester) within Grpcz boundaries as used in Eckert et al. 2015 | |
| hitelescope | Telescope used for observation (GBT = Green Bank 100m; AO = Arecibo 300m; ALFALFA = Arecibo Legacy Fast ALFA Survey (Arecibo 300m); S05-AO = Springob et al. (2005) catalog (Arecibo 300m); S05-GB300 = Springob et al. (2005) catalog (Green Bank 300ft) ) | |
| F21 | Jy.km/s | Total 21cm flux (use MHI = 2.36x10^5 (D/[Mpc])^2 *(F/[Jy.km/s]) to obtain masses in logMsun) |
| e_F21 | Jy.km/s | Uncertainty on total 21cm flux |
| rms_hi | mJy | rms noise of spectrum assuming 10 km/s channels |
| limflagmhi | Flag indicating upper limit on F21 (0 = detection; 1=upper limit) | |
| confused | Flag indicating 21cm emission likely confused (0 = not confused; 1 = confused) | |
| F21corr | Jy.km/s | Total 21cm flux after correction for confusion (use MHI = 2.36x10^5 (D/[Mpc])^2 *(F/[Jy.km/s]) to obtain masses in Msun) |
| e_F21corr_rand | Jy.km/s | Statistical uncertainty on total 21cm flux after correction for confusion |
| e_F21corr_sys | Jy.km/s | Additional systematic uncertainty on total 21cm flux after correction for confusion |
| deconf_mode | Method used to correct 21cm flux for confusion and determine the additional systematic uncertainty (see Section 2.3.2 of Stark et al. (2016)) | |
| groupid_s | Group dark matter halo mass, stellar-mass limited sample (By definition, all members of a group have the same values for each of the environment metrics.) | |
| groupmass_s | [solMass] | Group dark matter halo mass, stellar-mass limited sample |
| groupid_b | Group dark matter halo ID, baryonic mass-limited sample (By definition, all members of a group have the same values for each of the environment metrics.) | |
| groupmass_b | [solMass] | Group dark matter halo mass, baryonic mass-limited sample |
| dens_s | [solMass]/Mpc^2 | Large-scale structure density, stellar mass-limited sample groups, uncorrected for edge-effects |
| dens_corr_s | [solMass]/Mpc^2 | Large-scale structure density, stellar mass-limited sample groups, corrected for edge-effects |
| dens_b | [solMass]/Mpc^2 | Large-scale structure density, baryonic mass-limited sample groups, uncorrected for edge-effects |
| dens_b_corr | [solMass]/Mpc^2 | Large-scale structure density, baryonic mass-limited sample groups, uncorrected for edge-effects |
| dist_s | Projected distance to nearest M_h>10^12 halo, stellar mass-limited sample groups (Distances to nearest halo with mass > 10^12 Msun and heliocentric velocity separation <500 km/s are given relative to the virial radius of the nearest Mh>10^12 group, e.g., if a Mh=10^11 Msun halo lies at the virial radius of a Mh=10^12.5 Msun halo, dist_s = 1; Values only calculated for Mh<10^12 Msun groups) | |
| f_dist_s | Reliability Flag for dist_s (Flag=1 indicates that the corresponding distance may be unreliable due to proximity to survey boundary.) | |
| dist_b | Projected distance to nearest M_h>10^12 halo, baryonic mass-limited sample groups (Distances to nearest halo with mass > 10^12 Msun and heliocentric velocity separation <500 km/s are given relative to the virial radius of the nearest Mh>10^12 group, e.g., if a Mh=10^11 Msun halo lies at the virial radius of a Mh=10^12.5 Msun halo, dist_s = 1; Values only calculated for Mh<10^12 Msun groups) | |
| f_dist_b | Reliability Flag for dist_b (Flag=1 indicates that the corresponding distance may be unreliable due to proximity to survey boundary.) | |
| f_s16sample_s | Flag to select stellar mass-limited sample from Stark et al. (2016) (1 = in S16 stellar mass-limited sample) | |
| f_s16sample_b | Flag to select baryonic mass-limited sample from Stark et al. (2016) (1 = in S16 baryonic mass-limited sample) | |
| Grp | Group ID for standard RESOLVE groups using Friends-of-Friends and described in Eckert+2016 | |
| Grpradeg | deg | Right Ascension of group centroid in decimal degrees |
| Grpdedeg | deg | Declination of group centroid in decimal degrees |
| GrpN | Number of galaxies in group (for RESOLVE-B Mr < -17.0, RESOLVE-A < -17.33) | |
| GrpNassoc | Number of galaxies in group after associating galaxies below the absolute magnitude limit to nearby groups | |
| FC | flag designating group central (brightest galaxy in r-band luminosity) 1 if central, 0 if satellite | |
| logMh | log(Msun) | Group mass from halo abundance matching based on group-integrated r-band luminosity. |
| Grpsig | km/s | Velocity dispersion of group using Gapper method. Only provided for groups with N>2 members. |
| Grprproj | Mpc | Projected radius of group. Only provided for groups with N>2 members |
| logMhdyn | log(Msun) | group halo mass using dynamics. Only provided for groups with N>2 members. |
| logMhdynstack | log(Msun) | group halo mass using dynamics from stacked groups. Only provided for groups with N>2 members. |
| Grp_E17 | Group ID for groups from Eckert+2017, which after Friends-of-Friends used a pair splitting recipe, described in the appendix, to break up false pairs | |
| logMh_E17 | log(Msun) | group halo mass for groups from Eckert+2017 using halo abundance matching based on group integrated r-band luminoisty |
| logMhdynH_E17 | log(Msun) | group halo mass for groups from Eckert+2017 using "hybrid" combination of dynamical and abundance matching masses described in Section 2.3.5 of Eckert+2017. |
| nndist_kd | Mpc | Distance to nearest neighbor calculated from kd-tree algorithm and suppressing peculiar velocities within groups. |
| nndist_proj | Mpc | Distance to nearest neighbor calculated as the projected distance to the nearest neighbor in a cylindrical volume within cz=500 km/s of the main object. |
| econame | Name of matched galaxy in ECO catalog (value is "notineco" for those galaxies not in the ECO catalog) | |
| tf_type | Type of tidal feature seen in Hood et al. 2018. 1 = narrow and 2 = broad. This equals 0 if tf_confidence = 0 and -999 if galaxy was not inspected in this work. | |
| tf_confidence | Tidal feature detection confidence class. 4 = certain, 3 = probable, 2 = possible, 1 = hint, and 0 = none. -999 if galaxy not inspected in Hood et al. 2018. |