Search Results - "Courtois, Hélène M."

Cosmicflows-4: The Calibration of Optical and Infrared Tully-Fisher Relations by Kourkchi, Ehsan, Tully, R. Brent, Anand, Gagandeep S., Courtois, Hélène M., Dupuy, Alexandra, Neill, James D., Rizzi, Luca, Seibert, Mark

“…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…”
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Cosmic bulk flow and the local motion from Cosmicflows-2 by Hoffman, Yehuda, Courtois, Hélène M., Tully, R. Brent

“…Full sky surveys of peculiar velocity are arguably the best way to map the large-scale structure (LSS) out to distances of a few × 100 h −1 Mpc. Using the…”
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The hestia project: simulations of the Local Group by Libeskind, Noam I, Carlesi, Edoardo, Grand, Robert J J, Khalatyan, Arman, Knebe, Alexander, Pakmor, Ruediger, Pilipenko, Sergey, Pawlowski, Marcel S, Sparre, Martin, Tempel, Elmo, Wang, Peng, Courtois, Hélène M, Gottlöber, Stefan, Hoffman, Yehuda, Minchev, Ivan, Pfrommer, Christoph, Sorce, Jenny G, Springel, Volker, Steinmetz, Matthias, Tully, R Brent, Vogelsberger, Mark, Yepes, Gustavo

“…ABSTRACT We present the hestia simulation suite: High-resolutions Environmental Simulations of The Immediate Area, a set of cosmological simulations of the…”
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Cosmicflows-4 by Tully, R. Brent, Kourkchi, Ehsan, Courtois, Hélène M., Anand, Gagandeep S., Blakeslee, John P., Brout, Dillon, Jaeger, Thomas de, Dupuy, Alexandra, Guinet, Daniel, Howlett, Cullan, Jensen, Joseph B., Pomarède, Daniel, Rizzi, Luca, Rubin, David, Said, Khaled, Scolnic, Daniel, Stahl, Benjamin E.

“…Abstract With Cosmicflows- 4, distances are compiled for 55,877 galaxies gathered into 38,065 groups. Eight methodologies are employed, with the largest…”
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Our Peculiar Motion Away from the Local Void by Tully, R. Brent, Shaya, Edward J, Karachentsev, Igor D, Courtois, Hélène M, Kocevski, Dale D, Rizzi, Luca, Peel, Alan

“…The peculiar velocity of the Local Group of galaxies manifested in the cosmic microwave background dipole is found to decompose into three dominant components…”
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Cosmicflows-4: The Catalog of ∼10,000 Tully-Fisher Distances by Kourkchi, Ehsan, Tully, R. Brent, Eftekharzadeh, Sarah, Llop, Jordan, Courtois, Hélène M., Guinet, Daniel, Dupuy, Alexandra, Neill, James D., Seibert, Mark, Andrews, Michael, Chuang, Juana, Danesh, Arash, Gonzalez, Randy, Holthaus, Alexandria, Mokelke, Amber, Schoen, Devin, Urasaki, Chase

“…We present the distances of 9792 spiral galaxies lying within 15,000 km s−1 using the relation between luminosity and rotation rate of spiral galaxies. The…”
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Update on H i data collection from Green Bank, Parkes and Arecibo telescopes for the Cosmic Flows project by Courtois, Hélène M., Tully, R. Brent

“…Cosmic Flows is an international multi-element project with the goal to map motions of galaxies in the local Universe. Kinematic information from observations…”
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COSMICFLOWS-2: I-BAND LUMINOSITY-H I LINEWIDTH CALIBRATION by TULLY, R. Brent, COURTOIS, Hélène M

“…In order to measure distances with minimal systematics using the correlation between galaxy luminosities and rotation rates it is necessary to adhere to a…”
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WALLABY pre-pilot and pilot survey: The Tully Fisher relation in Eridanus, Hydra, Norma, and NGC4636 fields by Courtois, Hélène M, Said, Khaled, Mould, Jeremy, Jarrett, T H, Pomarède, Daniel, Westmeier, Tobias, Staveley-Smith, Lister, Dupuy, Alexandra, Hong, Tao, Guinet, Daniel, Howlett, Cullan, Deg, Nathan, For, Bi-Qing, Kleiner, Dane, Koribalski, Bärbel, Lee-Waddell, Karen, Rhee, Jonghwan, Spekkens, Kristine, Wang, Jing, Wong, O I, Bigiel, Frank, Bosma, Albert, Colless, Matthew, Davis, Tamara, Holwerda, Benne, Karachentsev, Igor, Kraan-Korteweg, Renée C, McQuinn, Kristen B W, Meurer, Gerhardt, Obreschkow, Danail, Taylor, Edward

“…ABSTRACT The WALLABY pilot survey has been conducted using the Australian SKA Pathfinder (ASKAP). The integrated 21-cm H i line spectra are formed in a very…”
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Calibration of the Mid-Infrared Tully-Fisher Relation by Sorce, Jenny G., Courtois, Helene M., Tully, R. Brent, Seibert, Mark, Scowcroft, Victoria, Freedman, Wendy L., Madore, Barry F., Persson, S. Eric, Monson, Andy, Rigby, Jane

“…Distance measures on a coherent scale around the sky are required to address the outstanding cosmological problemsof the Hubble constant and of departures from…”
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Cosmic flows: University of Hawaii 2.2-m I-band photometry by Courtois, Hélène M., Tully, R. Brent, Héraudeau, Philippe

“…Within the 'Cosmic Flows' project, I-band photometry of 524 relatively nearby galaxies has been carried out over the course of several years with the…”
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Cosmic Flows: Green Bank Telescope and Parkes Hi observations by Courtois, Hélène M, Tully, R. Brent, Makarov, D. I, Mitronova, S, Koribalski, B, Karachentsev, I. D, Fisher, J. Richard

“…The neutral hydrogen properties of 1822 galaxies are being studied with the Green Bank 100-m and the Parkes 64-m telescopes as part of the 'Cosmic Flows'…”
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Secular Extragalactic Parallax: Measurement Methods and Predictions for Gaia by Paine, Jennie, Darling, Jeremy, Graziani, Romain, Courtois, Hèléne M.

“…Secular extragalactic parallax caused by the solar system's velocity relative to the cosmic microwave background rest frame may be observable as a dipole…”
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Cosmicflows-3: Cosmography of the Local Void by Tully, R. Brent, Pomarède, Daniel, Graziani, Romain, Courtois, Hélène M., Hoffman, Yehuda, Shaya, Edward J.

“…Cosmicflows-3 distances and inferred peculiar velocities of galaxies have permitted the reconstruction of the structure of overdensities and underdensities…”
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The Cosmic V-Web by Pomarède, Daniel, Hoffman, Yehuda, Courtois, Hélène M., Tully, R. Brent

“…The network of filaments with embedded clusters surrounding voids, which has been seen in maps derived from redshift surveys and reproduced in simulations, has…”
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Cosmicflows-4: the baryonic Tully–Fisher relation providing ∼10 000 distances by Kourkchi, Ehsan, Tully, R Brent, Courtois, Hélène M, Dupuy, Alexandra, Guinet, Daniel

“…ABSTRACT The interstellar gas in spiral galaxies can constitute a significant fraction of the baryon mass and it has been demonstrated that the sum of stellar…”
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Cosmicflows-3: The South Pole Wall by Pomarède, Daniel, Tully, R. Brent, Graziani, Romain, Courtois, Hélène M., Hoffman, Yehuda, Lezmy, Jérémy

“…Velocity and density field reconstructions of the volume of the universe within 0.05c derived from the Cosmicflows-3 catalog of galaxy distances has revealed…”
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Three-dimensional Velocity and Density Reconstructions of the Local Universe with Cosmicflows-1 by Courtois, Hélène M, Hoffman, Yehuda, Tully, R. Brent, Gottlöber, Stefan

“…This paper presents an analysis of the local peculiar velocity field based on the Wiener Filter (WF) reconstruction method. We used our currently available…”
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The alignment of galaxy spin with the shear field in observations by Pahwa, Isha, Libeskind, Noam I., Tempel, Elmo, Hoffman, Yehuda, Tully, R. Brent, Courtois, Hélène M., Gottlöber, Stefan, Steinmetz, Matthias, Sorce, Jenny G.

“…Tidal torque theory suggests that galaxies gain angular momentum in the linear stage of structure formation. Such a theory predicts alignments between the spin…”
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Simulations of the Local Universe constrained by observational peculiar velocities by Sorce, Jenny G., Courtois, Hélène M., Gottlöber, Stefan, Hoffman, Yehuda, Tully, R. Brent

“…Peculiar velocities, obtained from direct distance measurements, are data of choice to achieve constrained simulations of the Local Universe reliable down to a…”
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