The IRAM Data Archive comprises three parts:
- the Data Management System (DMS) provides access to the Science Data Archive of science-ready data of Large and Standard Programs
- the Large Program Archive gives access to data products of Large Programs carried out with the IRAM telescopes. While it remains available, the DMS is in the process of gradually replacing it as the primary access point for these data products.
- the Science Data Archive of regular science projects obtained with both IRAM telescopes
Users of the above archives are required to acknowledge the source of the data in their publications:
“Based on data from the IRAM Science Data Archive. These data were obtained by [PI_name] with the [IRAM 30-meter telescope/IRAM NOEMA observatory] under project ID [program_ID].”
In addition, their publication should at least contain one reference to any resulting publications of the PI team.
The Data Management System
The IRAM Data Management System (DMS) provides the user interface for accessing the IRAM Science Data Archive, which hosts science-ready data products from Large and Standard Programs carried out with the IRAM telescopes. Users can either browse the list of programs or perform specific searches using a search form. The interface allows interactive visualization of position-position-velocity cubes, sky images, and spectra. Data products are available for download in FITS format (or GILDAS data format for the uv tables).
The IRAM Large Program Archive
The IRAM Large Program Archive is the collection point for research carried out at the IRAM observatories in the framework of a Large Program. While it remains available for now, it is currently being gradually replaced by the DMS. The goal of the Large Program Archive is to provide images, calibrated data cubes, and uv data from the 30-m telescope, NOEMA, and the former Plateau de Bure interferometer, and make these science products available to the astronomical community at the end of the regular data proprietary period. The IRAM Large Program Archive is the result of a joint effort between IRAM, the principal investigators of the Large Programs and their collaborators.
As described in the Large Program Data Policy, Large Program data become public after an 18 months proprietary period, counting from the end of the semester in which the project was completed.
The IRAM Large Program Archive is divided into three sections: Completed, Ongoing, and Early-Science Large Programs:
- Science-ready products of Completed Large Programs
- Overview and descriptions of Ongoing Large Programs
- General repository of other available data
The IRAM Science Data Archive
The IRAM Science Data Archive contains online calibrated data from the IRAM 30-meter telescope (gildas/class format) and raw data from NOEMA and its predecessor, the PdBI (gildas/clic format).
Header information of IRAM observations can be found at the CDS (Centre de Données astronomiques de Strasbourg) for old PdBI and new NOEMA data and for the 30-meter telescope.
Data can be requested for individual normal programs after a three-year proprietary period, counting from the end of the last semester of observations. If a program is divided into individual sub-projects, the three-year proprietary period starts at the end of the semester in which the last sub-program has been completed.
Requests for archival data should be submitted by e-mail to isda@iram.fr, specifying the identification number of the program (or sub-program). The project identification number can be retrieved from the above links at the CDS. All requests for data access from the archive are contingent on approval by IRAM. Requests that ask for more than one program will not be approved. Calibrated data of Large Programs are directly available through the IRAM Large Program Archive, no extra request is necessary to access these data.
The user will be informed about the approval status. If approved, IRAM will communicate the name of the user to the principal investigator of the program for which the request is made. The user will then be given access to the Science Data Archive download area. IRAM does not provide support for data reduction of such retrieved data.