GPIPS

About the Data Query Form

This page describes what is meant by each of the prompts and what formats your answers to these prompts should take. To avoid an overly-slow server, we will not be monitoring or saving information on users and past queries. Instead, it is possible for users to save the results of their search

If this page was not loaded into a new window and/or tab, then using your browser's "back" button should return you to the form with the information as you had entered it to this point. If that doesn't work, then I'm sorry. Given my choice, I'd force you to open this in a new window or tab, but the W3C frowns on that, and is actually trying to phase out use of the "target" aspect of the "a" tag.

Options Presented in Both Forms

Method of Search

You may either search for GPIPS fields that have already been surveyed and are in the database, or you may search for objects that have been selected from already observed fields, labeled, and had their polarization and magnitude information identified and stored. Searching for fields will

Coordinates/location/name to search by or for

There are four options for the short form and five options for the long form. The options are to search for items within a user-specified range of galactic coordinates, within a user-specified range of equatorial coordinates, for items that are identified as being present in or as a specific GPIPS-identified field (which are designated by integer values between 1 and 3200 something), or for items that are identified as either being the object with the GPIPS ID entered or fields in which the GPIPS ID'ed object has been identified. For both the short and long forms it is possible to enter a range of fields, rather than just one field. The long form gives the additional capabilites of requesting up to eight ranges of fields or singular fields, as well as searching by as many as eight object identifiers, which can be formatted as GPIPS identifications, 2MASS specifications, or GLIMPSE specifications. The fifth option included on the long form for modes of search is to ignore location, in which case it is the best idea to then searchy by other parameters, to avoid ending up with the entire catalog as the search result.

Acceptable formats:

Options Presented Only in the Long Form

Software Revision

Throughout the course of the survey it is likely that the software used to process the data into the deliverable form will go through changes and revisions. This option will only be taken into account when searching for objects, not fields.

Attributes of Fields to Display in Results

The database stores quite a bit of information about each field. These options apply only when searching for fields, and allow users to choose how much information they get printed to the screen on the results page. Provided that any results are found, users are then given the option to receive an ASCII file of the search results, with either the specified attributes from the form, or everything in the database related to the search for the resulting fields. A description of each of the attributes follows:

Polarization Properties

There are four text entry fields here. If the lower end of the range is included, the upper end must also be included. Both cells for either range can be left empty, though, if the choice is to search for all objects, regardless of their polarization data. The errors in the polarization measurements are not included, so a search for an object between 50% and 100% polarized would not include a result of an object 49.9% polarized with an error of .8%, for example.

Location in Field Image

Each field image is approximately 1200x1200 pixels in size. Estimates of the pixel location may be as precise as up to a tenth of a pixel. This option is included to allow users to look at a field image and then search for objects' identifiers and detailed polarization data based purely on the locations of the objects in the image in question.

Magnitude Range

It is possible to search for objects within magnitude ranges for several band measurements. There are the GPIPS-measured H-band measurements, as well as measurements taken from the 2MASS and GLIMPSE catalogs in J, H, K, L, M, 6µm, and 8µm bands for most/all objects in the catalog.

Attributes of Objects to Display in Results

The database stores quite a bit of information about each object. These options apply only when searching for objects, and allow users to choose how much information they get printed to the screen on the results page. Provided that any results are found, users are then given the option to receive an ASCII file of the search results, with either the specified attributes from the form, or everything in the database related to the search for the resulting objects. A description of each of the attributes follows:

Sort Object Results by:

When receiving the printout of the results to the screen, it is not currently possible to re-sort the lists. (If the user requests an ASCII file of the results, however, it is then thoroughly possible to use a spreadsheet program to import the data and sort it whichever way the user chooses.) This option allows the user to specify if they would like their data sorted by a particular parameter, most of which are described above in the section about attributes. In order for the sorting to apply, the user must select ONE option to sort by, and if they would prefer the search to be done in an ascending or descending manner, with lower to higher numbers being ascending, and higher to lower numbers being descending.