174 lines
8.1 KiB
HTML
174 lines
8.1 KiB
HTML
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<title>Cosmic flow model of our Local Universe </title>
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Cosmic flow model of our Local Universe
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</div>
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</div>
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<a href="/contour/">Explore</a>
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<a href="/lookup/">Lookup</a>
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<a href="/table_query/">Table query</a>
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<a href="/videos/">Videos</a>
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<div class="clearfix"></div>
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<div class="box_pad"><div class="section" id="density-and-peculiar-velocity-fields-in-the-nearby-universe">
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<h2>Density and Peculiar Velocity Fields in the Nearby Universe</h2>
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<p>This website provides up to date information on density and predicted peculiar velocity fields within 200 Mpc/h.
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This model can be used to estimate the density within a depth of 200 Mpc/h. It can also be used to calculate predicted peculiar velocities within the same volume. These predictions can also be used to correct observed redshifts for the effects of peculiar motions restoring them to the Hubble flow. This has applications for SNe and measurements of the Hubble constant.</p>
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<div class="figure align-left">
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<img alt="/assets/images2/SG6.png" src="/assets/images2/SG6.png" style="width: 30em;" />
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<p class="caption">The density field in the Supergalactic Plane, smoothed with a 10 Mpc/h Gaussian</p>
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</div>
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<p>Please also have a look at <a class="reference external" href="https://big4.iap.fr">our new project</a> involving detailed modeling of large scale structure statistics.</p>
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</div>
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<div class="section" id="data">
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<h2>Data</h2>
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<p>The density field is based on the 2M++ redshift compilation, which in turn is based on the 2MRS, 6dF and SDSS redshift surveys. Self-consistent distances to all galaxies are calculated consistent with their observed redshifts and linear perturbation theory.</p>
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</div>
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<div class="section" id="download">
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<h2>Download</h2>
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<p>From the <a class="reference external" href="/download">download</a> page, you can obtain the density and peculiar velocity fields in ASCII or numpy format.</p>
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</div>
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<div class="section" id="distances-to-galaxies-and-clusters">
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<h2>Distances to galaxies and clusters</h2>
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<p>You can query interactively the distance to nearby galaxies using the <a class="reference external" href="/lookup">online tool</a>. Coming soon! Stay tuned for updates.</p>
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</div>
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<div class="section" id="how-to-acknowledge">
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<h2>How to acknowledge</h2>
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<p>Please cite the following papers:</p>
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<ul class="simple">
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<li>"Cosmological parameters from the comparison of peculiar velocities with predictions from the 2M++ density field", Carrick J., Turnbull S., Lavaux G. & Hudson M. J., MNRAS, 2015. (<a class="reference external" href="http://adsabs.harvard.edu/abs/2015MNRAS.450..317C">ADS</a>, <a class="reference external" href="http://mnras.oxfordjournals.org/cgi/content/abstract/stv547?ijkey=576LnEJFhxHXqJp&keytype=ref">MNRAS</a>, <a class="reference external" href="http://arxiv.org/abs/1504.04627">arXiV</a>)</li>
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</ul>
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<p>A BiBTeX file with the above references can be downloaded <a class="reference external" href="2mpp.bib">here</a>.</p>
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</div>
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<div class="section" id="register-for-updates">
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<h2>Register for updates</h2>
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<p>We plan to update this site with new features and data sets in the future. Please register <a class="reference external" href="newsite.html">here</a> so that we can send you (infrequent) emails announcing these improvements as they are implemented. (We promise not to use your email for any other purpose!)</p>
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</div>
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<div class="section" id="three-dimensional-model">
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<h2>Three dimensional model</h2>
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<p>The model here below has been generated directly by uploading to Sketchfab. However, please visit <a class="reference external" href="/contour_plot">that page</a> for more interactivity and information on large scale structures.</p>
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<iframe style="display:block;margin: 0 auto;" width="640" height="480" src="https://sketchfab.com/models/450c5c76c42940d4a46a44d23825377c/embed" frameborder="0" allowfullscreen mozallowfullscreen="true" webkitallowfullscreen="true" onmousewheel=""></iframe><!-- -->
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<div id="signature">
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© 2014-2020 Guilhem Lavaux, Michael J. Hudson, Jon Carrick & Stephen Turnbull
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Please use closest mirror: <a href="http://cosmicflows.iap.fr">France</a> or <a href="http://cosmicflows.uwaterloo.ca">Canada</a>
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<div id="last_updated">
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Last updated: 2020-09-02 16:26:42 +0200
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