Correcting for peculiar velocities of Type Ia supernovae in clusters of galaxies
Abstract
Type Ia supernovae (SNe Ia) are widely used to measure the expansion of the Universe. To perform such measurements the luminosity and cosmological redshift (z) of the SNe Ia have to be determined. The uncertainty on z includes an unknown peculiar velocity, which can be very large for SNe Ia in the virialized cores of massive clusters. We determine which SNe Ia exploded in galaxy clusters using 145 SNe Ia from the Nearby Supernova Factory. We then study how the correction for peculiar velocities of host galaxies inside the clusters improves the Hubble residuals. We found 11 candidates for membership in clusters. We applied the biweight technique to estimate the redshift of a cluster. Then, we used the galaxy cluster redshift instead of the host galaxy redshift to construct the Hubble diagram. For SNe Ia inside galaxy clusters, the dispersion around the Hubble diagram when peculiar velocities are taken into account is smaller compared with a case without peculiar velocity correction, which has a wRMS = 0.130 ± 0.038 mag instead of wRMS = 0.137 ± 0.036 mag. The significance of this improvement is 3.58σ. If we remove the very nearby Virgo cluster member SN2006X (z < 0.01) from themore »
- Authors:
- more »
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Org.:
- The Nearby Supernova Factory
- OSTI Identifier:
- 1543828
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Astronomy and Astrophysics
- Additional Journal Information:
- Journal Volume: 615; Journal ID: ISSN 0004-6361
- Publisher:
- EDP Sciences
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; Astronomy & Astrophysics
Citation Formats
Léget, P. -F., Pruzhinskaya, M. V., Ciulli, A., Gangler, E., Aldering, G., Antilogus, P., Aragon, C., Bailey, S., Baltay, C., Barbary, K., Bongard, S., Boone, K., Buton, C., Childress, M., Chotard, N., Copin, Y., Dixon, S., Fagrelius, P., Feindt, U., Fouchez, D., Gris, P., Hayden, B., Hillebrandt, W., Howell, D. A., Kim, A., Kowalski, M., Kuesters, D., Lombardo, S., Lin, Q., Nordin, J., Pain, R., Pecontal, E., Pereira, R., Perlmutter, S., Rabinowitz, D., Rigault, M., Runge, K., Rubin, D., Saunders, C., Says, L. -P., Smadja, G., Sofiatti, C., Suzuki, N., Taubenberger, S., Tao, C., and Thomas, R. C. Correcting for peculiar velocities of Type Ia supernovae in clusters of galaxies. United States: N. p., 2018.
Web. doi:10.1051/0004-6361/201832932.
Léget, P. -F., Pruzhinskaya, M. V., Ciulli, A., Gangler, E., Aldering, G., Antilogus, P., Aragon, C., Bailey, S., Baltay, C., Barbary, K., Bongard, S., Boone, K., Buton, C., Childress, M., Chotard, N., Copin, Y., Dixon, S., Fagrelius, P., Feindt, U., Fouchez, D., Gris, P., Hayden, B., Hillebrandt, W., Howell, D. A., Kim, A., Kowalski, M., Kuesters, D., Lombardo, S., Lin, Q., Nordin, J., Pain, R., Pecontal, E., Pereira, R., Perlmutter, S., Rabinowitz, D., Rigault, M., Runge, K., Rubin, D., Saunders, C., Says, L. -P., Smadja, G., Sofiatti, C., Suzuki, N., Taubenberger, S., Tao, C., & Thomas, R. C. Correcting for peculiar velocities of Type Ia supernovae in clusters of galaxies. United States. https://doi.org/10.1051/0004-6361/201832932
Léget, P. -F., Pruzhinskaya, M. V., Ciulli, A., Gangler, E., Aldering, G., Antilogus, P., Aragon, C., Bailey, S., Baltay, C., Barbary, K., Bongard, S., Boone, K., Buton, C., Childress, M., Chotard, N., Copin, Y., Dixon, S., Fagrelius, P., Feindt, U., Fouchez, D., Gris, P., Hayden, B., Hillebrandt, W., Howell, D. A., Kim, A., Kowalski, M., Kuesters, D., Lombardo, S., Lin, Q., Nordin, J., Pain, R., Pecontal, E., Pereira, R., Perlmutter, S., Rabinowitz, D., Rigault, M., Runge, K., Rubin, D., Saunders, C., Says, L. -P., Smadja, G., Sofiatti, C., Suzuki, N., Taubenberger, S., Tao, C., and Thomas, R. C. Wed .
"Correcting for peculiar velocities of Type Ia supernovae in clusters of galaxies". United States. https://doi.org/10.1051/0004-6361/201832932. https://www.osti.gov/servlets/purl/1543828.
@article{osti_1543828,
title = {Correcting for peculiar velocities of Type Ia supernovae in clusters of galaxies},
author = {Léget, P. -F. and Pruzhinskaya, M. V. and Ciulli, A. and Gangler, E. and Aldering, G. and Antilogus, P. and Aragon, C. and Bailey, S. and Baltay, C. and Barbary, K. and Bongard, S. and Boone, K. and Buton, C. and Childress, M. and Chotard, N. and Copin, Y. and Dixon, S. and Fagrelius, P. and Feindt, U. and Fouchez, D. and Gris, P. and Hayden, B. and Hillebrandt, W. and Howell, D. A. and Kim, A. and Kowalski, M. and Kuesters, D. and Lombardo, S. and Lin, Q. and Nordin, J. and Pain, R. and Pecontal, E. and Pereira, R. and Perlmutter, S. and Rabinowitz, D. and Rigault, M. and Runge, K. and Rubin, D. and Saunders, C. and Says, L. -P. and Smadja, G. and Sofiatti, C. and Suzuki, N. and Taubenberger, S. and Tao, C. and Thomas, R. C.},
abstractNote = {Type Ia supernovae (SNe Ia) are widely used to measure the expansion of the Universe. To perform such measurements the luminosity and cosmological redshift (z) of the SNe Ia have to be determined. The uncertainty on z includes an unknown peculiar velocity, which can be very large for SNe Ia in the virialized cores of massive clusters. We determine which SNe Ia exploded in galaxy clusters using 145 SNe Ia from the Nearby Supernova Factory. We then study how the correction for peculiar velocities of host galaxies inside the clusters improves the Hubble residuals. We found 11 candidates for membership in clusters. We applied the biweight technique to estimate the redshift of a cluster. Then, we used the galaxy cluster redshift instead of the host galaxy redshift to construct the Hubble diagram. For SNe Ia inside galaxy clusters, the dispersion around the Hubble diagram when peculiar velocities are taken into account is smaller compared with a case without peculiar velocity correction, which has a wRMS = 0.130 ± 0.038 mag instead of wRMS = 0.137 ± 0.036 mag. The significance of this improvement is 3.58σ. If we remove the very nearby Virgo cluster member SN2006X (z < 0.01) from the analysis, the significance decreases to 1.34σ. The peculiar velocity correction is found to be highest for the SNe Ia hosted by blue spiral galaxies. Those SNe Ia have high local specific star formation rates and smaller stellar masses, which is seemingly counter to what might be expected given the heavy concentration of old, massive elliptical galaxies in clusters. As expected, the Hubble residuals of SNe Ia associated with massive galaxy clusters improve when the cluster redshift is taken as the cosmological redshift of the supernova. This fact has to be taken into account in future cosmological analyses in order to achieve higher accuracy for cosmological redshift measurements. We provide an approach to do so.},
doi = {10.1051/0004-6361/201832932},
journal = {Astronomy and Astrophysics},
number = ,
volume = 615,
place = {United States},
year = {2018},
month = {8}
}
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Multicolor Light Curves of Type Ia Supernovae on the Color‐Magnitude Diagram: A Novel Step toward More Precise Distance and Extinction Estimates
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Rhapsody. i. Structural Properties and Formation History from a Statistical Sample of Re-Simulated Cluster-Size Halos
journal, January 2013
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The Supernova Legacy Survey 3-year sample: Type Ia supernovae photometric distances and cosmological constraints
journal, November 2010
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SFI++ I : A New I ‐Band Tully‐Fisher Template, the Cluster Peculiar Velocity Dispersion, and H 0
journal, December 2006
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Peculiar velocity measurement in a clumpy universe
journal, February 2018
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A survey of the Pisces-Perseus supercluster. V - The declination strip +33.5 deg to +39.5 deg and the main supercluster ridge
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The Absolute Luminosities of the Calan/Tololo Type IA Supernovae
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The Hubble Diagram of the Calan/Tololo Type IA Supernovae and the Value of HO
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HyperLEDA. III. The catalogue of extragalactic distances
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The Hubble diagram of type Ia supernovae as a function of host galaxy morphology
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SALT2: using distant supernovae to improve the use of type Ia supernovae as distance indicators
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The Distribution of Rich Clusters of Galaxies.
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Seeking the Local Convergence Depth. V. Tully-Fisher Peculiar Velocities for 52 Abell Clusters
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Structure and Dynamics of the Coma Cluster
journal, February 1996
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Streaming motions of galaxy clusters within 12 000 km s −1 - V. The peculiar velocity field
journal, July 2004
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Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples
journal, August 2014
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