glossary for RESOLVE DR4 searchable online database
RESOLVE DR4 includes parameters from previous data releases by crossmatch unless obsolete or superseded. Users may refer to RESOLVE DR1-DR3 for the original data. Please note that there have been changes to survey membership. Additionally, Hutchens et al. (2023) rejected some photometry from calculations. These magnitudes are reported as -999 in the main data table, but the full photometry can be accessed with this CSV file. The rejected photometry can also be accessed in the RESOLVE DR4 table on our Data page.
| parameter | unit | description |
|---|---|---|
| 2hmag | mag | Apparent 2MASS H-band magnitude (provided without foreground extinction corrections) |
| 2jmag | mag | Apparent 2MASS J-band magnitude (provided without foreground extinction corrections) |
| 2kmag | mag | Apparent 2MASS K-band magnitude (provided without foreground extinction corrections) |
| absrmag | mag | Absolute SDSS r-band magnitude (foreground extinction included) |
| absrmagcorr | mag | absolute r-band magnitude including correction for internal extinction (foreground corrections and k-corrections implicitly included), consistent with photometry updates and SED modeling code described in E15 Erratum and updates in H23 appendix |
| absrmage16 | --- | absolute r-band magnitude from E16 |
| b_a | --- | axial ratio b/a |
| confused | --- | 1/0 flag indicating HI measurement is confused |
| cz | km/s | Local group corrected velocity of galaxy |
| czhel | km/s | Heliocentric recession velocity of galaxy |
| dedeg | deg | Declination of photometric center in decimal degrees |
| dist2d_nn1 | Mpc | projected distance to 1st nearest neighbor. Candidate neighbors are limited to abs(Vgal-Vneighbor) = 500 km/s, where we have used the local group corrected velocities to define galaxy redshift (same as nndist_proj in RESOLVE DR3 database). |
| dist2d_nn2 | Mpc | projected distance to 2nd nearest neighbor. Candidate neighbors are limited to abs(Vgal-Vneighbor) = 500 km/s, where we have used the local group corrected velocities to define galaxy redshift |
| dist2d_nn3 | Mpc | projected distance to 3rd nearest neighbor. Candidate neighbors are limited to abs(Vgal-Vneighbor) = 500 km/s, where we have used the local group corrected velocities to define galaxy redshift |
| e_2hmag | mag | Error in 2Hmag |
| e_2jmag | mag | Error in 2Jmag |
| e_2kmag | mag | Error in 2Kmag |
| e_gmag | mag | Error in gmag |
| e_imag | mag | Error in imag |
| e_nuvmag | mag | Error in NUVmag |
| e_rmag | mag | Error in rmag |
| e_uhmag | mag | Error in UHmag |
| e_ukmag | mag | Error in UKmag |
| e_umag | mag | Error in umag |
| e_uvm2mag | mag | Error in uvm2mag |
| e_uymag | mag | Error in UYmag |
| e_zmag | mag | Error in zmag |
| econame | --- | name of matched galaxy in ECO catalog |
| emhidet | Msun | Error on HI masses from 21cm detections; 0 if galaxy is upper limit |
| extfuv | mag | Foreground extinction in FUV band |
| extg | mag | Foreground extinction in r band |
| exth | mag | Foreground extinction in H band |
| exti | mag | Foreground extinction in i band |
| extj | mag | Foreground extinction in J band |
| extk | mag | Foreground extinction in K band |
| extnuv | mag | Foreground extinction in NUV band |
| extr | mag | Foreground extinction in r band |
| extu | mag | Foreground extinction in u band |
| extuvm2 | mag | Foreground extinction in uvm2 band |
| exty | mag | Foreground extinction in Y band |
| extz | mag | Foreground extinction in z band |
| f_a | --- | 1/0 flag for objects in RESOLVE-A “spring” sub volume (RA = 8.75-15.75hr) |
| f_b | --- | 1/0 flag for objects in RESOLVE-B “fall” sub volume (RA = 22-3hr) |
| foffc | --- | FoF central galaxy flag (1 for most luminous group member in r band) |
| fofgrp | --- | FoF group identifier from H23 |
| fofgrpabsrmag | mag | FoF group-integrated absolute r-band magnitude (giants & dwarfs) |
| fofgrpcz | km/s | FoF group center cz |
| fofgrpdedeg | deg | FoF group center Declination J2000 |
| fofgrpmhi | log(Msun) | FoF log group-integrated HI mass from H23 |
| fofgrpn | --- | Number of galaxies in FoF group |
| fofgrpradeg | deg | FoF group center RA J2000 |
| foflogmh200 | log(Msun) | FoF log group halo mass using Warren et al. (2006) HMF. -- WARNING: This column is mislabeled as the Warren et al. HMF uses an overdensity contrast of 280b, not 200b. An erratum for H23 will be issued soon. |
| foflogmhvir | log(Msun) | FoF log group halo mass (337b) |
| fofskycutoffflag | --- | 1 if galaxy's group has members both in RESOLVE-A and in larger non-RESOLVE-A portion of ECO (0 for RESOLVE-B galaxies) |
| g3fc | --- | G3 central galaxy flag (1 for most luminous group member in r band) |
| g3grp | --- | G3 group identifer |
| g3grpabsrmag | mag | G3 group-integrated absolute r-band magnitude (giants & dwarfs) |
| g3grpcz | km/s | G3 group center cz |
| g3grpdedeg | deg | G3 group center Declination J2000 |
| g3grpmhi | log(Msun) | G3 log group-integrated HI mass |
| g3grpndw | --- | Number of dwarf galaxies in G3 group |
| g3grpngi | --- | Number of giant galaxies in G3 group |
| g3grpradeg | deg | G3 group center RA J2000 |
| g3logmh200 | log(Msun) | G3 log group halo mass using Warren et al. (2006) HMF. -- WARNING: This column is mislabeled as the Warren et al. HMF uses an overdensity contrast of 280b, not 200b. An erratum for H23 will be issued soon. |
| g3logmhvir | log(Msun) | G3 log group halo mass (337b) |
| g3skycutoffflag | --- | 1 if galaxy's group has members both in RESOLVE-A and in larger non-RESOLVE-A portion of ECO (0 for RESOLVE-B galaxies) |
| gmag | mag | Apparent SDSS g-band magnitude (provided without foreground extinction corrections) |
| hirms | Jy | RMS noise level measured from a signal-free region of the ALFALFA, GBT or Arecibo spectra. |
| hitelescope | --- | telescope used to observe galaxy (AO = Arecibo Observatory, GBT = Green Bank Telescope, ALFALFA = ALFALFA survey, S05 = Springob+05 catalog) |
| imag | mag | Apparent SDSS i-band magnitude (provided without foreground extinction corrections) |
| invole17 | --- | In-volume flag for E17 groups |
| involfof | --- | Group in-volume flag for H23 FoF groups (1 if 3000 < cz_grp < 7000) |
| involg3 | --- | Group in-volume flag for G3 groups (1 if 4500 < cz_grp < 7000) |
| logmgas | log(Msun) | Log gas mass (1.4*MHI to account for He); this gas mass is the "best" as it combines good HI measurements and PGFs. Follows algorithm described in A.6.2 of H23 (not the E16 algorithm) |
| logmgastype | --- | logmgas type flag, see H23 A.6.2 for description of values |
| logmstar | log(Msun) | Log stellar mass (consistent with photometry updates and SED modeling code described in E15 Erratum and updates in H23 appendix). Please refer to badrphot when using this column |
| loscmvgdist | Mpc | line-of-sight comoving distance to galaxy |
| mhidet | Msun | HI masses from 21cm detections; 0 if galaxy is upper limit or not observed |
| mhilim | Msun | 3-sigma upper limit HI masses for 21cm non-detections, see Stark et al. (2016) for details; 0 if galaxy has a 21cm detection or was not observed. |
| modelabsrmag | mag | Model absolute r-band magnitude, includes foreground extinction corrections and k-corrections, but not internal extinction corrections. |
| modelg_i | mag | SED modeled (g-i) color (foreground corrections and k-corrections implicitly included), consistent with photometry updates and SED modeling code described in E15 Erratum and updates in H23 appendix |
| modelg_icorr | mag | SED modeled (g-i) color including correction for internal extinction (foreground corrections and k-corrections implicitly included), consistent with photometry updates and SED modeling code described in E15 Erratum and updates in H23 appendix |
| modelg_j | mag | SED modeled (g-J) color (foreground corrections and k-corrections implicitly included), consistent with photometry updates and SED modeling code described in E15 Erratum and updates in H23 appendix |
| modelg_jcorr | mag | SED modeled (g-J) color including correction for internal extinction (foreground corrections and k-corrections implicitly included), consistent with photometry updates and SED modeling code described in E15 Erratum and updates in H23 appendix |
| modelg_k | mag | SED modeled (g-K) color (foreground corrections and k-corrections implicitly included), consistent with photometry updates and SED modeling code described in E15 Erratum and updates in H23 appendix |
| modelg_kcorr | mag | SED modeled (g-K) color including correction for internal extinction (foreground corrections and k-corrections implicitly included), consistent with photometry updates and SED modeling code described in E15 Erratum and updates in H23 appendix |
| modelg_r | mag | SED modeled (g-r) color (foreground corrections and k-corrections implicitly included), consistent with photometry updates and SED modeling code described in E15 Erratum and updates in H23 appendix |
| modelg_rcorr | mag | SED modeled (g-r) color including correction for internal extinction (foreground corrections and k-corrections implicitly included), consistent with photometry updates and SED modeling code described in E15 Erratum and updates in H23 appendix |
| modelu_i | mag | SED modeled (u-i) color (foreground corrections and k-corrections implicitly included), consistent with photometry updates and SED modeling code described in E15 Erratum and updates in H23 appendix |
| modelu_icorr | mag | SED modeled (u-i) color including correction for internal extinction (foreground corrections and k-corrections implicitly included), consistent with photometry updates and SED modeling code described in E15 Erratum and updates in H23 appendix |
| modelu_j | mag | SED modeled (u-J) color (foreground corrections and k-corrections implicitly included), consistent with photometry updates and SED modeling code described in E15 Erratum and updates in H23 appendix |
| modelu_jcorr | mag | SED modeled (u-J) color including correction for internal extinction (foreground corrections and k-corrections implicitly included), consistent with photometry updates and SED modeling code described in E15 Erratum and updates in H23 appendix |
| modelu_k | mag | SED modeled (u-K) color (foreground corrections and k-corrections implicitly included), consistent with photometry updates and SED modeling code described in E15 Erratum and updates in H23 appendix |
| modelu_kcorr | mag | SED modeled (u-K) color including correction for internal extinction (foreground corrections and k-corrections implicitly included), consistent with photometry updates and SED modeling code described in E15 Erratum and updates in H23 appendix |
| modelu_r | mag | SED modeled (u-r) color (foreground corrections and k-corrections implicitly included), consistent with photometry updates and SED modeling code described in E15 Erratum and updates in H23 appendix |
| modelu_rcorr | mag | SED modeled (u-r) color including correction for internal extinction (foreground corrections and k-corrections implicitly included), consistent with photometry updates and SED modeling code described in E15 Erratum and updates in H23 appendix |
| morphel | --- | string "E" = early type, "L" = late type for quantitative morphological type (from Moffett+ 2015) |
| mu_delta | log(Msun/kpc^2) | stellar surface mass density within R50 minus stellar surface mass density between R50 and R90 (see Kannappan et al. 2013 for details) that corresponds to galaxy morphology, as updated in H23 |
| name | --- | RESOLVE galaxy identifier |
| nndist_kd | Mpc | Distance to nearest neighbor calculated from kd-tree algorithm and suppressing peculiar velocities within groups. From Hood+2018 |
| nuvmag | mag | Apparent GALEX NUV-band magnitude (provided without foreground extinction corrections) |
| peaksnhi | --- | peak S/N of HI profile (S/N > 5-6 is generally a good cutoff for reliable W50) |
| r50 | arcsec | The half-light radius in r band |
| r90 | arcsec | The 90%-light radius in r band |
| radeg | deg | Right Ascension of photometric center in decimal degrees |
| rmag | mag | Apparent SDSS r-band magnitude (provided without foreground extinction corrections) |
| tf_confidence | --- | Hood_2018 flag for tidal feature detection confidence. 4 = certain, 3 = probable, 2 = possible, 1 = hint, 0 = none. -999 if galaxy was not inspected in this work. |
| tf_type | --- | Hood_2018 flag for tidal feature type: 1=narrow, 2=broad. A flag of 0 is given if tf_confidence=0 and -999 means that the galaxy was not inspected in this work. |
| uhmag | mag | Apparent UKIDSS H-band magnitude (provided without foreground extinction corrections) |
| ukmag | mag | Apparent UKIDSS K-band magnitude (provided without foreground extinction corrections) |
| umag | mag | Apparent SDSS u-band magnitude (provided without foreground extinction corrections) |
| uvm2mag | mag | Apparent Swift uvm2-band magnitude (provided without foreground extinction corrections) |
| uymag | mag | Apparent UKIDSS Y-band magnitude (provided without foreground extinction corrections) |
| zmag | mag | Apparent SDSS z-band magnitude (provided without foreground extinction corrections) |