GBT total allocated:
over 1000 hours
Parkes total allocated:
over 200 hours
Spitzer Proposal 80072
200 hrs observing time
- NRAO Large Program
- Parkes Observatory
Université Lyon 1, CNRS/IN2P3/INSU
Institute de Physique Nucléaire
R. Brent Tully
Institute for Astronomy
2680 Woodlawn Drive
Honolulu, HI 96822
J. Richard Fisher
Nat'l Radio Astronomy Observatory
520 Edgemont Road
Charlottesville, VA 22903
2012 News :
Extragalactic Distance Database
select catalog “All Digital HI”
al. 2009, AJ, 138, 1938
al. 2011, MNRAS, 414, 2005
al. 2011, MNRAS, 415, 1935
Large Program on Green Bank Telescope:
Collaborators: R. Brent Tully, J. Richard
Fisher, D. Makarov, I. Karachentsev, S. Mitronova, B. Koribalski, R.
Cosmic Flows with Spitzer & WISE:
PI: R. Brent Tully, UH Institute for Astronomy
Collaborators: Hélène Courtois, E. Shaya, T. Jarrett, W.
Freedman, B. Madore, E. Persson, M. Seibert
- Project Description:
motions that deviate from the universal expansion through gravitational
interactions on a wide range of scales. The radial component of these
deviant motions can be mapped with accurate measurements of distances.
One of a variety of ways to measure distances makes use of the
correlation between the luminosities of galaxies and their rotation
rates. With appropriate photometric and spectroscopic information, the
method can be applied to a majority of spiral galaxies. Samples of many
thousands of galaxies can be acquired, giving the dense spatial
coverage required to study the streams and eddies in the Cosmic Flow.
Information about galaxy rotation rates is derived from observations of
global 21cm Hydrogen line profiles. Data are accumulated at a variety
of telescopes to assure full sky coverage but foremost in importance
for the project is the Robert C. Byrd Green Bank Telescope (GBT)
because of its sensitivity and access to most of the sky. The Cosmic
Flows Large Program on GBT is our most important source of new galaxy
line profile information. Galaxies in the extreme south are observed
from Australia at the CSIRO Parkes Observatory.
A tremendous advance in optical band photometry is being realized as
observations commence with the newly commissioned wide-field imaging
facility Pan-STARRS in Hawaii. Mid-infrared imaging photometry is
equally important. Studies are under way with data acquired from two
space satellite programs: Cosmic Flows with Spitzer and Cosmic Flows
The Extragalactic Distance Database (EDD) has been developed to give
access to the diverse information involved with the measurement of
galaxy distances. The results of observations made during the course of
this program will be made available within the catalog ‘All Digital HI’
in EDD. Original optical photometry is made available in EDD through
the catalog ‘Hawaii Photometry’.
SNIa Calibration and H0"
Courtois, R.B. Tully
I-band Luminosity - HI Linewidth Calibration"
Tully and H.M. Courtois,
“3D Velocity and Density
Reconstructions of the Local Universe with Cosmicflows-1”
H.M. Courtois, Y. Hoffman, R.B. Tully, S. Gottlober,
flows: University of Hawaii 2.2-m I-band photometry”
H.M. Courtois, R.B. Tully,
Green Bank Telescope and Parkes H I Observations”
H.M. Courtois, R.B. Tully, D.I. Makarov, S. Mitronova, B. Koribalski,
I.D. Karachentsev, J.R. Fisher
R.B. Tully, H.M. Courtois, W. Freedman, T. Jarrett, B. Madore, E.
Persson, M. Seibert, E. Shaya
“Fast motions of
galaxies in the Coma I cloud: a case of Dark Attractor?”
I.D. Karachentsev, O.G. Nasonova, H.M. Courtois
“The Extragalactic Distance Database”
R.B. Tully, L. Rizzi, E.J. Shaya, H.M. Courtois, D.I Makarov, B.A.
“The Local Void is Really Empty”
“The Local Velocity Anomaly”
“Our Peculiar Motion away from the Local Void”
R.B. Tully, E.J. Shaya, I.D. Karachentsev, H.M. Courtois, D.D.
Kocevski, L. Rizzi, A. Peel
“Derivation of Distances with the Tully-Fisher Relation: The
N. Bonhomme, H.M. Courtois, R.B. Tully
“Distances in the Local Universe:
New HI and I Band Surveys”
H.M. Courtois, R.B. Tully, J.R. Fisher