Position
Source name
Source Name

Source name to be resolved.

An attempt will be made to first resolve against the ALMA catalog. If the name is not found then resolution is attempted with the external resolver Sesame , which is used to obtain coordinates for the source. Sesame queries the Simbad, NED and VizieR services

Examples

J0854+201

M87

NGC3375

RA
RA (J2000)

J2000 Right Ascension

Description

RA may be expressed in sexagesimal, with colon-separated hours:minutes:seconds, or in decimal degrees. Sexagesimal will be considered when at least one colon is typed. Otherwise decimal degrees will be considered. Manually entered values take precedence over any resolved co-ordinates.

Units

Hours:Minutes:Seconds and decimal degrees

Examples

04:18:21.02

252.21

Dec
Declination (J2000)

J2000 Declination

Description

DEC may be expressed in sexagesimal, with colon-separated +Degrees:Minutes:Seconds, or in decimal degrees. Sexagesimal will be considered when at least one colon is typed. Otherwise decimal degrees will be considered. Manually entered values take precedence over any resolved co-ordinates.

Units

Degrees:Minutes:Seconds and decimal degrees

Examples

+38:01:32.7

32.5

Search radius
Search Radius
Search Radius of the cone centered around RA / Dec
Units
degrees
Examples

10.0

UV
UV
Optional bounds on the UV values of the sources to be returned.
Units

klambda

Examples

20.5 .. 40.6

>40.0

<-10.0

Energy
Band
Band
Select the relevant bands in which to perform the search.
Frequency
Frequency
Provide optional bounds on the frequency of the sources to be returned. This will be applied in addition to any bands which may have been selected.
Units
GHz
Examples

20.5 .. 40.6

>40.0

<-10.0

Flux Density
Flux Density
Optional bounds on the flux density of the sources to be returned.
Units
Jy
Examples

20.5 .. 40.6

>40.0

<-10.0

Spectral Index
Spectral Index
Minimum and maximum spectral index values to search for.
Examples

20.5 .. 40.6

>40.0

<-10.0

Time
After
Observed After

Limit the results to those observations which occurred after the specified date. If no dates are provided then all dates are searched, but only the most recent observation for a source in a particular band is displayed.

Constraining the observation date will cause the results table to be structured hierarchically, with the sources at the top level, and all measurements for that source at the next level.

If no time constraints are given only the newest measurement in each band will be shown for each source

Format
YYYY-MM-DD
Example

2014-03-18

Before
Observed Before

Limit the results to those observations which occurred before the specified date. If no dates are provided then all dates are searched, but only the most recent observation for a source in a particular band is displayed.

Constraining the observation date will cause the results table to be structured hierarchically, with the sources at the top level, and all measurements for that source at the next level.

If no time constraints are given only the newest measurement in each band will be shown for each source

Format
YYYY-MM-DD
Example

2014-03-18

Polarisation
Fraction
Polarisation Fraction
Optional bounds on the polarisation fraction of the sources to be returned.
Units
%
Examples

20.5 .. 40.6

>40.0

<-10.0

Angle
Polarisation Angle
Optional bounds on the polarisation angle of the sources.
Units
degrees
Examples

20.5 .. 40.6

>40.0

<-10.0

Options
Catalogues
Catalogues
Constrain the catalogues which are to be searched. No selection means no constraint, i.e. it is the same as selecting all catalogues.
Type
Type
Constrain the type which is to be searched. No selection means no constraint, i.e. it is the same as selecting all types.
All Measurements
Show all measurements or only those which have been marked as valid in the database.
Auxiliary Files
Selecting this option will only show measurements which have auxiliary files associated with them.
More columns
Click on a source to show the flux history.
Source Info Flux Range Jy Bands
Mouse over a source to see its details.
Names
RA Uncertainty DEC Uncertainty
Last Update Update User Coment
Source Catalogue
RA Uncertainty
DEC Uncertainty
Frequency
Flux Uncertainty
Degree Uncertainty
Angle Uncertainty
Uvmin Uvmax
Date Observed Date Created
Last Update Update User
Origin
Comment

You can zoom into the plots by clicking and dragging with your mouse to define a zoom area.

The zoom area can be reset with a double mouse click.

(Zoom is not possible in a cone search plot)

If no time constraints are given, only the newest measurement in each band will be shown for each source.

To edit sources and measurements, perform a search with a temporal constraint, and then double-click on rows in the results grid.

All other database elements can currently only be edited using the REST interface . See the documentation for further details and examples.

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