Table information for 'ohmaser.masers'

General

Table Description: Maser data proper.

This table is available for ADQL queries and through the TAP endpoint.

Resource Description: A all-sky compilation of galactic stellar sources observed for OH maser emission in the transitions at 1612, 1665, and 1667 MHz. The database contains OH maser observations selected from the literature . These observations belong to more than 6000 different objects. The database consists of three tables: The main table ("masers"), interferometric followup observations ("maps") and monitoring programs ("monitor").

For a list of all services and tables belonging to this table's resource, see Information on resource 'A Database of Circumstellar OH Masers'

Citing this table

This table has an associated publication. If you use data from it, it may be appropriate to reference 2015A&A...582A..68E (ADS BibTeX entry for the publication) either in addition to or instead of the service reference.

To cite the table as such, we suggest the following BibTeX entry:

@MISC{vo:ohmaser_masers,
  year=2009,
  title={A Database of Circumstellar OH Masers},
  author={Engels, D. and Bunzel, F.},
  url={https://dc.zah.uni-heidelberg.de/tableinfo/ohmaser.masers},
  howpublished={{VO} resource provided by the {GAVO} Data Center}
}

Columns

Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
measure_no ID Unique measurement identifier N/A meta.id;meta.main
source_no Source id Unique, artificial source identifier N/A meta.code
flag Quality Non-null if this measurement is considered the best available at a particular frequency. Lower means higher confidence. N/A meta.code
source_name Source Name of the observed source. The name given in the reference is usually kept. N/A meta.id
frequency Freq Observed frequency MHz em.freq
spec_type Sp. Type S -- Single peak of maser emission; D -- Double peak of maser emission; I -- Irregular spectral profile, multiple emission peaks. N/A meta.code;src.spType
ra_raw RA (orig) J2000 RA N/A pos.eq.ra
de_raw Dec (orig) J2000 Dec N/A pos.eq.dec
veloc_blue Vel. Blue Velocity of the blue-shifted maser peak. For single-peak masers it contains the line velocity. km/s phys.veloc.expansion;pos.bodyrc
veloc_red Vel. Red Velocity of the red-shifted maser peak in km/s. It contains the line velocity for a single peak maser if it corresponds to the red-shifted peak in other observations. km/s phys.veloc.expansion;pos.bodyrc
veloc_central Radial velocity Radial velocity of the central star. If veloc_central is not given in the reference, it is calculated. km/s phys.veloc.expansion;pos.bodyrc
veloc_shell Expansion Vel. Outflow Velocity of the shell. If vexp is not given in the reference it is calculated. km/s phys.veloc.expansion;pos.bodyrc
veloc_err Vel. Resolution Uncertainty of velocity values. Taken from the velocity resolution of the observation. It is actually a lower limit of the uncertainty, because the lines are usually much broader than velocity resolution of the observing equipment. km/s stat.error;phys.veloc.expansion;pos.bodyrc
flux_dens_flag Flux. Dens. Flag. NULL -- flux density columns contain detections; < -- non-detection at level flux density blue (3 sigma); > -- flux density blue contains a lower limit for the flux; = -- source only gives fluxes; . -- flux density blue contains probable detection; : -- flux density red contains probable detection; & -- both flux densities contain probable detections N/A meta.code
flux_dens_blue Flux Blue Flux Density of the blue-shifted maser peak. For single-peak masers it contains its flux density. Jy phot.flux.density;em.radio.1500-3000MHz
flux_dens_red Flux Red Flux Density of the red-shifted maser peak. It contains the flux density for a single peak maser, if it corresponds to the red-shifted peak in other observations. Jy phot.flux.density;em.radio.1500-3000MHz
int_flux_red Int. Red Integrated flux of red peak 1e-22W.m**-2 phot.flux.density;em.radio.1500-3000MHz
int_flux_blue Int. Blue Integrated flux of blue peak 1e-22W.m**-2 phot.flux.density;em.radio.1500-3000MHz
ref_key Ref Internal key for the originating paper, see ohmasers.bibrefs. N/A meta.bib
rapub RA pub. RA of object, from source deg pos.eq.ra
depub Dec pub. Dec of object, from source deg pos.eq.dec
raj2000 RA J2000 Selected best RA, J2000 deg pos.eq.ra;meta.main
dej2000 Dec J2000 Selected best Dec, J2000 deg pos.eq.dec;meta.main
mapurl Map URL to information on an interferometric followup observation for this object. N/A meta.ref.url
monitorurl Monitor URL to information on a monitor programme for this object. N/A meta.ref.url

Columns that are parts of indices are marked like this.

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