IPAC

Home

NASA/IPAC Extragalactic Database

  • Home
  • Search Objects
    • By Name
    • Near Name or Position (Cone)
    • In Refcode
    • By Parameters
  • Literature
    • References by Author Name
    • Reference Lookup
    • Nomenclature
  • Services
    • Gravitational Wave Followup
      • Overview
      • Events
    • Ticket Status
    • Level5
      • Knowledge Base
      • Glossary
    • Classic Home Page
  • Tools
    • Coordinate Calculator
    • Extinction Calculator
    • Velocity Calculator
  • Information
    • Overview
      • News
      • Archived Release Notes
    • User Guides
      • Search Objects
      • Calculators
      • Program Interfaces
      • Database
      • Tutorials
      • Best Practices
      • Search & Retrieval FAQ
      • Scientific Calculations FAQ
      • Known Issues
      • Discontinuing Services
    • Holdings
      • Nomenclature
      • Counts
      • Graphics
      • Data Sets
    • References
      • Articles about NED
      • Brochure (pdf)
      • Cosmology Calculators
      • Extinction-Law Calculators
      • Related Sites
    • Community
      • Users Committee
      • Ambassadors
    • Team
    • Contact Us

You are here

Home » Literature » Reference Lookup

Help Reference Information

TitleH i Observations in the Virgo Cluster Area. III. All ``Member'' Spirals
AuthorsHoffman, G. Lyle; Lewis, B. M.; Helou, George; Salpeter, E. E.; Williams, Hayes L.
Bibcode

1989ApJS...69...65H   Search ADS ↗

AbstractWe report H I observations of 141 spiral galaxies in and around the Virgo Cluster, with major-axis mapping for 65 of them. This completes the sample of galaxies with Arecibo major-axis mapping to B_T_ <= 14.0 and extends Arecibo observations with at least a central beam to all spiral galaxies considered "member" or "possible member" in the Virgo Cluster Catalog. All but three spirals (Sab through Sd) were detected. For all detected galaxies, we give heliocentric velocities, profile widths, and H I fluxes. For mapped galaxies we also give spin orientations and, for those sufficiently resolved by the 3.2' beam, H I diameters. Mapped galaxy spectra are shown as contour plots of position versus velocity; for the remainder we show central beam spectra. In a previous paper these data have served as a comparison sample for an analysis of dwarf irregular galaxies. Here we briefly analyze the distributions of spin orientations; they are essentially random. Finally, we present the distributions of H I luminosity and indicative dynamical mass for the spirals and a synthesized H I distribution for the cluster as a whole. The last will serve as a template against which future observations of clusters, distant enough for a substantial fraction of their member galaxies to fall within a single beam, may be measured.
Objects

156 Objects    Search NED ↙

Reload form

The NASA/IPAC Extragalactic Database (NED) is funded by the
National Aeronautics and Space Administration under
Award Number 80NSSC21M0037, and operated by the California Institute of Technology.

  • IPAC
  • Caltech
  • NASA
  • About NED
  • Acknowledging NED
  • Connect with NED:
    • EMail
    • facebook
    • youtube
Copyright © 2025, California Institute of Technology
back up ↑