Galaxy Motions in the Nearby Universe

Huchra, J. P.

doi:10.1017/s0074180900110022

Cited by 1 publication

(1 citation statement)

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“…The resulting Hubble flow velocity of Virgo, ∼1320 km s −1 , is consistent with many other estimates (e.g. Faber et al 1989;Tonry et al 1990;Mould et al 1995;Huchra 1996). A different Hubble constant would change the distance estimate to Virgo if the Hubble flow velocity of Virgo remains unchanged.…”

Section: A the Distance To Virgo And A Different Hubble Constantsupporting

confidence: 87%

The Local Luminosity Function at 25 Microns

Shupe

Fan

Hacking

et al. 1998

ApJ

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The local luminosity function at 25 $\mu$m provides the basis for interpreting the results of deep mid-infrared surveys planned or in progress with space astrophysics missions including ISO, WIRE and SIRTF. We have selected a sample of 1458 galaxies from the IRAS Faint Source Survey with a flux density limit of 250 mJy at 25 $\mu$m. The local luminosity function is derived using both parametric and non-parametric maximum-likelihood techniques, and the classical $1/V_{max}$ estimator. Comparison of these results shows that the $1/V_{max}$ estimate of the luminosity function is significantly affected by the Local Supercluster. A maximum-likelihood fit to the radial density shows no systematic increase that would be caused by density evolution of the galaxy population. The density fit is used to correct the $1/V_{max}$ estimate. We also demonstrate the high quality and completeness of our sample by a variety of methods. The luminosity function derived from this sample is compared to previously published estimates, showing the prior estimates to have been strongly affected by the Local Supercluster. Our new luminosity function leads to lower estimates of mid-infrared backgrounds and number counts.Comment: 33 pages, 14 EPS figures. Accepted by Ap

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Section: A the Distance To Virgo And A Different Hubble Constantsupporting

confidence: 87%