Form Usage

This text describes the use of the three forms proposed to query

The General Index -- The Photometries -- The Bibliographic references


The General Index

The result of a query of the General Index will list the photometries in which a given star has been observed and the number of data sources. Queries may be made with one or several star designations, or by coordinates.

To enter a query

  1. Fill the dialog boxes with star numbers or coordinates

    Star number
    Enter one or several star identifications, separated by a coma,
    like: HD 10700, HD 20902
    The most common acronyms are presently recognised.
    For other identifications, use the code numbers (LID).

    Coordinates
    Check for the equinox, 1950 or 2000
    Enter in their respectives boxes
    • the Right Ascension, like : 12 24 15
    • the Declination, like : -56 48.7
    • the size in RA ['arc], like : 5.0
    • the size in Decl ['arc], like : 5.0
    These values define a box centered on RA = 12h 24 15, Dec = -56 48.7
    The width is entered in minutes of arc in both coordinates.
    The size values are in fact the half size of the box sides.

  2. Press the button Query by ... depending on your choice.
  3. The button Reset Form will clear the entry areas.

To get photometric data

Once the list of available data is displayed, the measurements for a specific photometric system may be obtained simply by clicking on the photometry designation. Information on the photometric system itself is obtained by following the link proposed with the system number.

To get further data

The references for the data sources corresponding to the selected photometry are listed together with the data. By clicking on the link underlying the journal name, you can display all the data from the publication.


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The Photometries

This form allows to query data for any star in any photometric system.

It offers the possibility to retrieve mean (averaged) values or original data (as published), and to display the references or not.

The selection can be made for one or several stars, the name being separated by comas, with recognised acronyms. Examples are displayed in the compact menu. Stars can be also searched for in any area or selections can be made according to the magnitudes or colour indices. Star clusters or special list can be search by the generic part of the code number.

To enter a query

  1. Select a photometric system from the scrolling list
  2. Select the search for mean or original data

    Mean
    Averaged values have been computed for the UBV and uvby systems,
    Mean data only are available for the Geneva and Celescope systems.
    Original
    Original data reproduced from the literature

  3. Decide if you wish also to display the bibliographic references
  4. Select the kind of criterion to perform the search
  5. Fill the dialog box, according to the above choice

    Star number
    Enter one or several star identifications, separated by a coma,
    like: HD 10700, HD 20902
    The most common acronyms are presently recognised.
    For other identifications, use the code number (LID).

    Coordinates
    Select the equinox (1950 or 2000) of the coordinates
    Enter
    • the right ascension,
    • the size in RA,
    • the declination and
    • the size in Decl
    in a format like: 3 40 00 10.0 23 30.0 10.0, corresponding to

    hh mm ss
    hour, minute and second of right ascension
    xx.x
    dimension in right ascension, indicated in minute of arc
    dd mm.m
    degree, minute.fraction of minute of declination
    yy.y
    dimension in declination of the area in minute of arc

    These values defines a box centered on RA = 3h 40 00, Dec = +23 30.0
    and width equal to 20 minutes of arc in RA and Dec.
    The size values are in fact the half size of the box sides.

    Astrophysical parameters
    Enter a line containing a parameter, a comparator and a value like in:
    • B-V > 2.3
    • U-B > -0.5 && U-B < 0.5
    • -0.5 < U-B < 0.5
    • V < 2.00 && B-V < 0.00
    The comparators && and || can be replaced by "and" or "or" like in:
    • V < 2.00 and B-V < 0.00
    • V < 2.00 or B-V > 2.00
    • V < 1.50 and V != ""

    The descriptions of the photometric systems list the valid parameters.
    Except for the format (-0.5 < U-B < 0.5), the parameter should be typed in the beginning like in : B-V > 2.3 and not 2.3 < B-V

    Code number
    This query offers the possibility to extract the stars that have similar code numbers, like stars in clusters or in small list.
    Enter:
    the keyword Code, the comparator ~ and the generic part of the code number
    Example:
    Code ~ 022287
    will extract the data for the cluster NGC 2287
    The syntax
    Code like 022287
    is also accepted

  6. Enter Return or press the button Submit query.
  7. The button Reset Form will clear the entry area.

To get further data

If you chose to list the references for the data sources together with the data, you can click on the link underlying the journal name to display all the data from the publication.


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The Bibliographic References

This form offers the possibility to query the reference database by different methods, for each system individually.

To query the references

  1. Select first the kind of keys you want to use
  2. Select a photometric system
  3. Enter the relevant information in the dialog box depending on your first selection

    Reference number
    Enter a list of reference numbers, separated by space or coma
    Author name
    Enter the name of the author
    Title keyword
    Enter a string, like for example:
    1. old open cluster
    2. OB stars
    3. classical cepheids
    Journal name
    Enter a characteristic string, like for example:
    1. Pacific
    2. Pacific 89
    The first criterion will select all references related to "Pacific", while the second one will select only the references included in the volume 89

  4. Enter Return or press the button Submit query.
  5. The button Reset Form will clear the entry area.

To get further data

Click on the link underlying the journal name to display all the data from this publication.


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mermio@scsun.unige.ch
Last update: 16 March 1996