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Cosmicflows-4: The Calibration of Optical and Infrared Tully–Fisher Relations

Kourkchi, Ehsan and Tully, R. Brent and Anand, Gagandeep S. and Courtois, Hélène M. and Dupuy, Alexandra and Neill, James D. and Rizzi, Luca and Seibert, Mark (2020) Cosmicflows-4: The Calibration of Optical and Infrared Tully–Fisher Relations. Astrophysical Journal, 896 (1). Art. No. 3. ISSN 1538-4357. doi:10.3847/1538-4357/ab901c.

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This study is a part of the Cosmicflows-4 project with the aim of measuring the distances of more than ~10,000 spiral galaxies in the local universe up to ~15,000 km s⁻¹. New H i line width information has come primarily from the Arecibo Legacy Fast ALFA Survey. Photometry of our sample galaxies has been carried out in optical (SDSS u, g, r, i, and z) and infrared (WISE W1 and W2) bands. Inclinations have been determined using an online graphical interface accessible to a collaboration of citizen scientists. Galaxy distances are measured based on the correlation between the rotation rate of spirals and their absolute luminosity, known as the Tully–Fisher relation (TFR). In this study, we present the calibration of the TFR using a subsample of ~600 spirals located in 20 galaxy clusters. Correlations among such observables as color, surface brightness, and relative H i content are explored in an attempt to reduce the scatter about the TFR with the goal of obtaining more accurate distances. A preliminary determination of the Hubble constant from the distances and velocities of the calibrator clusters is H 0 = 76.0 ± 1.1(stat.) ± 2.3(sys.) km s⁻¹ Mpc⁻¹.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Kourkchi, Ehsan0000-0002-5514-3354
Tully, R. Brent0000-0002-9291-1981
Anand, Gagandeep S.0000-0002-5259-2314
Courtois, Hélène M.0000-0003-0509-1776
Neill, James D.0000-0002-0466-1119
Rizzi, Luca0000-0003-0882-2327
Seibert, Mark0000-0002-1143-5515
Additional Information:© 2020. The American Astronomical Society. Received 2020 February 4; revised 2020 April 9; accepted 2020 April 29; published 2020 June 8. We are pleased to acknowledge the citizen participation in scientific research of undergraduate students at the University of Hawaii; members of amateur astronomy clubs in France at the Planétarium de Vaulx-en-Velin, Association Clair d'étoiles et Brin d'jardin, Société astronomique de Lyon, Club d'astronomie Lyon Ampère, Club d'astronomie des monts du lyonnais, and Club d'astronomie de Dijon; and friends who helped us with measuring inclinations of spiral galaxies in our sample. Support for E.K. and R.B.T. was provided by NASA through grant No. 88NSSC18K0424 and for G.A. and R.B.T. through grants from the Space Telescope Science Institute. H.C. acknowledges support from Institut Universitaire de France. This research has made use of the NASA/IPAC Extragalactic Database, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.
Group:Space Radiation Laboratory
Funding AgencyGrant Number
Space Telescope Science InstituteUNSPECIFIED
Institut Universitaire de France (IUF)UNSPECIFIED
Subject Keywords:Distance measure ; Galaxy distances ; Galaxy photometry ; H I line emission ; Spiral galaxies ; Inclination ; Galaxy structure ; Large-scale structure of the universe
Issue or Number:1
Classification Code:Unified Astronomy Thesaurus concepts: Distance measure (395); Galaxy distances (590); Galaxy photometry (611); H I line emission (690); Spiral galaxies (1560); Inclination (780); Galaxy structure (622); Large-scale structure of the universe (902)
Record Number:CaltechAUTHORS:20200608-141840236
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Official Citation:Ehsan Kourkchi et al 2020 ApJ 896 3
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:103777
Deposited By: George Porter
Deposited On:08 Jun 2020 21:29
Last Modified:16 Nov 2021 18:25

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