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- NED - NASA/IPAC Extragalactic Database
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- _A_d_d_r_e_s_s:
- NED c/o IPAC
- MS 100-22
- California Institute of Technology
- Pasadena, CA 91125
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- _E_m_a_i_l: ned@ipac.caltech.edu
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- _P_h_o_n_e: (818) 397-9503
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- _D_e_s_c_r_i_p_t_i_o_n
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- The NASA/IPAC Extragalactic Database (NED) is an ongoing
- project to organize a broad range of published extragalactic
- data into a computer-based central archive designed for fast
- and flexible query via electronic networks.
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- The June 1992 version of NED provides positions, names, and
- basic data for more than 200,000 extragalactic objects, as
- well as related bibliographic references and notes from
- catalogs and other publications. It forwards to the user,
- upon request, files containing the data retrieved during a
- session. It also allows users to view the contents of some
- major catalogs and to browse the abstracts of recent arti-
- cles of extragalactic interest from several major journals
- (including A&A, AJ, ApJ, IAU Circulars, MNRAS, PASP, their
- Letters and Supplements). The current release also intro-
- duces the capability of searches filtered by object types
- (e.g. find galaxies only, or exclude infrared sources), and
- provides the first phase of detailed data collection from
- catalogs and the literature.
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- NED is an object-oriented database, meaning that all infor-
- mation is organized around a master list of astronomical
- objects (such as galaxies, groups of galaxies, quasars and
- radio sources) obtained from detailed cross-identifications
- among some thirty major catalogs. Additional catalogs are
- being folded in continually. Objects can be selected by
- _________________________
- The information in this section is provided in accor-
- dance with the copyright notice appearing at the front
- of this guide.
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- August 5, 1992 NNSC Section 3.21, Page 1
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- name (a high-level name interpreter is built into the inter-
- face), or by vicinity, either to a named object, or to a
- position on the sky.
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- _N_e_t_w_o_r_k _A_c_c_e_s_s
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- You may access the NED service over Internet, provided you
- have a VT100 terminal or VT100 emulation software.
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- On Internet, a connection to IPAC may be set up with the
- command: "telnet ned.ipac.caltech.edu"
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- Once you are connected to IPAC and prompted for a login,
- respond with: "NED"
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- No password is needed. From this point, the system is
- self-documenting, especially through the Help utilities and
- the "control-h" key sequence. First-time users may want to
- read the Tutorial in the first screen presented by the
- interface.
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- _W_h_o _C_a_n _U_s_e _t_h_e _R_e_s_o_u_r_c_e
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- Available at no charge to the international astronomical
- community.
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- _M_i_s_c_e_l_l_a_n_e_o_u_s
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- This work is carried out by the Jet Propulsion Laboratory,
- California Institute of Technology, under contract with the
- National Aeronautics and Space Administration (Astrophysics
- Division, Science Operations Branch).
-
- George Helou (818) 584-2928
- Barry Madore (818) 584-2912
- Marion Schmitz (818) 584-2994
- Harold Corwin (818) 584-2937
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- August 5, 1992 NNSC Section 3.21, Page 2
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