Information on Service 'A Database of Circumstellar OH Masers: Monitoring Programs'

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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 service's resource, see Information on resource 'A Database of Circumstellar OH Masers'

Overview

You can access this service using:

Coverage

6.52238e-06 6.89063e-06 eV

This service is published as follows:

local means it is listed on our front page, ivo_managed means it has a record in the VO registry.

Other services provided on the underlying data include:

Input Fields

The following fields are available to provide input to the service (with some renderers, some of these fields may be unavailable):

NameTable Head DescriptionUnitUCD
DEC Delta (ICRS) Declination (ICRS decimal) deg pos.eq.dec
frequency Freq Observed frequency MHz em.freq
hscs_pos Position/Name Coordinates (as h m s, d m s or decimal degrees), or SIMBAD-resolvable object N/A N/A
hscs_sr Search radius Search radius in arcminutes N/A N/A
maxrec Match limit Maximum number of records returned. Pass 0 to retrieve service parameters. N/A N/A
obs_date_end Obs. end Date of last observation, Julian years yr time.end;obs
RA Alpha (ICRS) Right Ascension (ICRS decimal) deg pos.eq.ra
responseformat Output Format File format requested for output. N/A meta.code.mime
source_no Source id Unique, artificial source identifier N/A meta.code
SR Search Radius Search radius deg N/A
verb Verbosity Exhaustiveness of column selection. VERB=1 only returns the most important columns, VERB=2 selects the columns deemed useful to the average user, VERB=3 returns a table with all available columns. N/A N/A

Default Output Fields

The following fields are contained in the output by default. More fields may be available for selection; these would be given below in the VOTable output fields.

NameTable Head DescriptionUnitUCD
_r Dist. Distance to cone center deg pos.distance
dej2000 Dec J2000 Selected best Dec, J2000 deg pos.eq.dec;meta.main
frequency Freq Observed frequency MHz em.freq
max_flux_dens_flag Max Flux upper limit? < if max_flux_dens_peak is a 3σ upper limit. N/A meta.code
max_flux_dens_peak Max flux Maximal flux density observed (or 3σ upper limit) Jy phot.flux.density;em.radio;stat.max
measure_no ID Unique measurement identifier N/A meta.id;meta.main
min_flux_dens_flag Min Flux upper limit? < if min_flux_dens_peak is a 3σ upper limit. N/A meta.code
min_flux_dens_peak Min flux Minimal flux density observed (or 3σ upper limit) Jy phot.flux.density;em.radio;stat.min
obs_date_end Obs. end Date of last observation, Julian years yr time.end;obs
obs_date_start Obs. start Date of the first observation, Julian years. yr time.start;obs
raj2000 RA J2000 Selected best RA, J2000 deg pos.eq.ra;meta.main
ref_key Ref Internal key for the originating paper, see ohmasers.bibrefs. N/A meta.bib
source_name Source Name of the observed source. The name given in the reference is usually kept. N/A meta.id
t_res Time res. Approximate time resolution of obs_date_* yr time.resolution

VOTable Output Fields

The following fields are available in VOTable output. The verbosity level is a number intended to represent the relative importance of the field on a scale of 1 to 30. The services take a VERB argument. A field is included in the output if their verbosity level is less or equal VERB*10.

NameTable Head DescriptionUnitUCD Verb. Level
measure_no ID Unique measurement identifier N/A meta.id;meta.main 1
frequency Freq Observed frequency MHz em.freq 5
obs_date_start Obs. start Date of the first observation, Julian years. yr time.start;obs 5
obs_date_end Obs. end Date of last observation, Julian years yr time.end;obs 5
_r Dist. Distance to cone center deg pos.distance 10
raj2000 RA J2000 Selected best RA, J2000 deg pos.eq.ra;meta.main 10
dej2000 Dec J2000 Selected best Dec, J2000 deg pos.eq.dec;meta.main 10
ref_key Ref Internal key for the originating paper, see ohmasers.bibrefs. N/A meta.bib 10
source_name Source Name of the observed source. The name given in the reference is usually kept. N/A meta.id 15
t_res Time res. Approximate time resolution of obs_date_* yr time.resolution 15
max_flux_dens_flag Max Flux upper limit? < if max_flux_dens_peak is a 3σ upper limit. N/A meta.code 15
max_flux_dens_peak Max flux Maximal flux density observed (or 3σ upper limit) Jy phot.flux.density;em.radio;stat.max 15
min_flux_dens_flag Min Flux upper limit? < if min_flux_dens_peak is a 3σ upper limit. N/A meta.code 15
min_flux_dens_peak Min flux Minimal flux density observed (or 3σ upper limit) Jy phot.flux.density;em.radio;stat.min 20
source_no Source id Unique, artificial source identifier N/A meta.code 29

Citation Info

VOResource XML (that's something exclusively for VO nerds)