Search Parameters
Please choose any combination of stellar parameters (choose parameter), errors (choose error parameter) and/or colours (choose colour equation). If you want to run the query by yourself please click here (use SQL language)
Example: if you want to find WDMS binaries identified as PCEBs with a
NaI doublet radial velocity of more than 50Km/s and no photometric
observations, with an SDSS i magnitude of less than 19, with
declination between -10 and 10, with an error in the white dwarf mass
of less than 0.1 Msun, and with u-g less than 0.5 you should type the
following:
| choose... | parameter/error/colour | select condition | ||
| choose parameter | sigma | greater than | 0 | |
| choose parameter | rv na | greater than | 50 | |
| choose parameter | phot | equal | 0 | |
| choose parameter | i | less than | 19 | |
| choose parameter | dec | between | -10 | 10 |
| choose error | Mwde | less than | 0.1 | |
| choose colour equation | u-g | less than | 0.5 |
Note that Sp is set to -1 when the spectral type of the secondary star
obtained from our fits is not reliable. Also take into account that
when no white dwarf fit is available, the white dwarf parameters are
set to 0. Thus, if you want to find (for example) WDMS binaries
containing white dwarfs of mass less than 0.5Msun, we recommend to use
the condition 'Mwd between 0.001 and 0.5', instead of 'Mwd less than 0.5'
| ra | = right ascension (degrees) |
| dec | = declination (degrees) |
| nuv/nuve | = GALEX near-ultraviolet magnitude / error |
| fuv/fuve | = GALEX far-ultraviolet magnitude / error |
| u/ue | = SDSS u magnitude / error |
| g/ge | = SDSS g magnitude / error |
| r/re | = SDSS r magnitude / error |
| i/ie | = SDSS i magnitude / error |
| z/ze | = SDSS z magnitude / error |
| Y/Ye | = UKIDSS Y magnitude / error |
| J/Je | = UKIDSS J magnitude / error |
| H/He | = UKIDSS H magnitude / error |
| K/Ke | = UKIDSS K magnitude / error |
| HJD | = heliocentric Julian date |
| rv_na/rv_nae | = NaI doublet radial velocity (km/s) / error (set to -1000 for objects without RV measurements) |
| rv_ha/rv_hae | = Halpha radial velocity (km/s) / error (set to -1000 for objects without RV measurements) |
| tel | = telescope used for the observations |
| sol | = fit solution (1 our adopted solution, 0 the ruled out solution) |
| MJD | = SDSS modified Julian date |
| PLT | = SDSS spectroscopic plate |
| FIB | = SDSS spectroscopic fibre |
| type | = WDMS type (e.g. DA/M, DB/K, DA:/M...) |
| Teff/Teffe | = white dwarf effective temperature (K) / error |
| logg/logge | = white dwarf surface gravity / error |
| Mwd/Mwde | = white dwarf mass (Msun) / error |
| Rwd/Rwde | = white dwarf radius (Rsun)/error |
| dwd/dwde | = white dwarf distance (pc) / error |
| Sp | = secondary star spectral type |
| M2/M2e | = secondary star mass (Msun)/error obtained from the empirical Sp-M-R relation from Rebassa-Mansergas et al. (2007) |
| R2/R2e | = secondary star radius (Rsun)/error obtained from the empirical Sp-M-R relation from Rebassa-Mansergas et al. (2007) |
| dsec/dsece | = secondary star distance (pc) / error |
| Teffsec | = secondary star effective temperature (K) |
| Msec/Msece | = secondary star mass (Msun)/error obtained from evolutionary models of low-mass stars |
| Rsec/Rsece | = secondary star radius (Rsun)/error obtained from evolutionary models of low-mass stars |
| Lsec/LSece | = secondary star luminosity (Lsun)/error |
| age | = age of the system (Gyr) |
| sigma | = wide WDMS binary candidate (sigma=0) or PCEB (sigma=3,4) |
| porb/porbe | = orbital period (h) / error |
| phot | = follow-up photometry by our team available (phot=1), not available (phot=0) |
| spec | = follow-up spectroscopy by our team available (spec=1), not available (spec=0) |
| re | = resolved binary in the SDSS image (1) or not resolved (0), or candidate (-1) |
| segue | = WDMS binaries observed (or firstly observed) in SEGUE |