Zobrazeno 1 - 10
of 548
pro vyhledávání: '"Bongard, S."'
Autor:
Souverin, T., Neveu, J., Betoule, M., Bongard, S., Blanc, P. E., Tanugi, J. Cohen, Dagoret-Campagne, S., Feinstein, F., Ferrari, M., Hazenberg, F., Juramy, C., Guillou, L. Le, Van Suu, A. Le, Moniez, M., Nuss, E., Plez, B., Regnault, N., Sepulveda, E., Sommer, K.
The number of type Ia supernova (SNe Ia) observations will grow significantly within the next decade, mainly thanks to the Legacy Survey of Space and Time (LSST) undertaken by the Vera Rubin Observatory in Chile. With this improvement, statistical un
Externí odkaz:
http://arxiv.org/abs/2411.03256
Autor:
Sommer, K., Cohen-Tanugi, J., Plez, B., Betoule, M., Bongard, S., Guillou, L. Le, Neveu, J., Nuss, E., Sepulveda, E., Souverin, T., Moniez, M., Stubbs, C. W.
Type Ia supernovae are the most direct cosmological probe to study dark energy in the recent Universe, for which the photometric calibration of astronomical instruments remains one major source of systematic uncertainties. To address this, recent adv
Externí odkaz:
http://arxiv.org/abs/2312.02835
Autor:
Aldoroty, L., Wang, L., Hoeflich, P., Yang, J., Suntzeff, N., Aldering, G., Antilogus, P., Aragon, C., Bailey, S., Baltay, C., Bongard, S., Boone, K., Buton, C., Copin, Y., Dixon, S., Fouchez, D., Gangler, E., Gupta, R., Hayden, B., Karmen, Mitchell, Kim, A. G., Kowalski, M., Küsters, D., Léget, P. -F., Mondon, F., Nordin, J., Pain, R., Pecontal, E., Pereira, R., Perlmutter, S., Ponder, K. A., Rabinowitz, D., Rigault, M., Rubin, D., Runge, K., Saunders, C., Smadja, G., Suzuki, N., Tao, C., Thomas, R. C., Vincenzi, M.
Publikováno v:
The Astrophysical Journal, 948:10 (15pp), 2023 May 1
We apply the color-magnitude intercept calibration method (CMAGIC) to the Nearby Supernova Factory SNe Ia spectrophotometric dataset. The currently existing CMAGIC parameters are the slope and intercept of a straight line fit to the first linear regi
Externí odkaz:
http://arxiv.org/abs/2210.06708
Autor:
Stein, George, Seljak, Uros, Bohm, Vanessa, Aldering, G., Antilogus, P., Aragon, C., Bailey, S., Baltay, C., Bongard, S., Boone, K., Buton, C., Copin, Y., Dixon, S., Fouchez, D., Gangler, E., Gupta, R., Hayden, B., Hillebrandt, W., Karmen, M., Kim, A. G., Kowalski, M., Kusters, D., Leget, P. F., Mondon, F., Nordin, J., Pain, R., Pecontal, E., Pereira, R., Perlmutter, S., Ponder, K. A., Rabinowitz, D., Rigault, M., Rubin, D., Runge, K., Saunders, C., Smadja, G., Suzuki, N., Tao, C., Thomas, R. C., Vincenzi, M.
We construct a physically-parameterized probabilistic autoencoder (PAE) to learn the intrinsic diversity of type Ia supernovae (SNe Ia) from a sparse set of spectral time series. The PAE is a two-stage generative model, composed of an Auto-Encoder (A
Externí odkaz:
http://arxiv.org/abs/2207.07645
Autor:
Rubin, David, Aldering, G., Antilogus, P., Aragon, C., Bailey, S., Baltay, C., Bongard, S., Boone, K., Buton, C., Copin, Y., Dixon, S., Fouchez, D., Gangler, E., Gupta, R., Hayden, B., Hillebrandt, W., Kim, A. G., Kowalski, M., Kuesters, D., Leget, P. -F., Mondon, F., Nordin, J., Pain, R., Pecontal, E., Pereira, R., Perlmutter, S., Ponder, K. A., Rabinowitz, D., Rigault, M., Runge, K., Saunders, C., Smadja, G., Suzuki, N., Tao, C., Taubenberger, S., Thomas, R. C., Vincenzi, M., Factory, The Nearby Supernova
We calibrate spectrophotometric optical spectra of 32 stars commonly used as standard stars, referenced to 14 stars already on the HST-based CALSPEC flux system. Observations of CALSPEC and non-CALSPEC stars were obtained with the SuperNova Integral
Externí odkaz:
http://arxiv.org/abs/2205.01116
Autor:
Boone, K., Aldering, G., Antilogus, P., Aragon, C., Bailey, S., Baltay, C., Bongard, S., Buton, C., Copin, Y., Dixon, S., Fouchez, D., Gangler, E., Gupta, R., Hayden, B., Hillebrandt, W., Kim, A. G., Kowalski, M., Küsters, D., Léget, P. -F., Mondon, F., Nordin, J., Pain, R., Pecontal, E., Pereira, R., Perlmutter, S., Ponder, K. A., Rabinowitz, D., Rigault, M., Rubin, D., Runge, K., Saunders, C., Smadja, G., Suzuki, N., Tao, C., Taubenberger, S., Thomas, R. C., Vincenzi, M.
We study the spectral diversity of Type Ia supernovae (SNe Ia) at maximum light using high signal-to-noise spectrophotometry of 173 SNe Ia from the Nearby Supernova Factory. We decompose the diversity of these spectra into different extrinsic and int
Externí odkaz:
http://arxiv.org/abs/2105.02676
Autor:
Boone, K., Aldering, G., Antilogus, P., Aragon, C., Bailey, S., Baltay, C., Bongard, S., Buton, C., Copin, Y., Dixon, S., Fouchez, D., Gangler, E., Gupta, R., Hayden, B., Hillebrandt, W., Kim, A. G., Kowalski, M., Küsters, D., Léget, P. -F., Mondon, F., Nordin, J., Pain, R., Pecontal, E., Pereira, R., Perlmutter, S., Ponder, K. A., Rabinowitz, D., Rigault, M., Rubin, D., Runge, K., Saunders, C., Smadja, G., Suzuki, N., Tao, C., Taubenberger, S., Thomas, R. C., Vincenzi, M.
We show how spectra of Type Ia supernovae (SNe Ia) at maximum light can be used to improve cosmological distance estimates. In a companion article, we used manifold learning to build a three-dimensional parameterization of the intrinsic diversity of
Externí odkaz:
http://arxiv.org/abs/2105.02204
Autor:
Aldering, G., Antilogus, P., Aragon, C., Bailey, S., Baltay, C., Bongard, S., Boone, K., Buton, C., Chotard, N., Copin, Y., Dixon, S., Fakhouri, H. K., Feindt, U., Fouchez, D., Gangler, E., Hayden, B., Hillebrandt, W., Kim, A. G., Kowalski, M., Kusters, D., Leget, P. -F., Lin, Q., Lombardo, S., Mondon, F., Nordin, J., Pain, R., Pecontal, E., Pereira, R., Perlmutter, S., Ponder, K., Pruzhinskaya, M., Rabinowitz, D., Rigault, M., Rubin, D., Runge, K., Saunders, C., Says, L. -P., Smadja, G., Suzuki, N., Tao, C., Taubenberger, S., Thomas, R. C., Vincenzi, M., Weaver, B.
The Nearby Supernova Factory has made spectrophotometric observations of Type Ia supernovae since $2004$. This work presents an interim version of the data produced, including $210$ supernovae observed between $2004$ and $2013$.
Comment: 5 pages
Comment: 5 pages
Externí odkaz:
http://arxiv.org/abs/2005.03462
Autor:
Graziani, R., Rigault, M., Regnault, N., Gris, Ph., Möller, A., Antilogus, P., Astier, P., Betoule, M., Bongard, S., Briday, M., Cohen-Tanugi, J., Copin, Y., Courtois, H. M., Fouchez, D., Gangler, E., Guinet, D., Hawken, A. J., Kim, Y. -L., Léget, P. -F., Neveu, J., Ntelis, P., Rosnet, Ph., Nuss, E.
Type Ia Supernovae have yet again the opportunity to revolutionize the field of cosmology as the new generation of surveys are acquiring thousands of nearby SNeIa opening a new era in cosmology: the direct measurement of the growth of structure param
Externí odkaz:
http://arxiv.org/abs/2001.09095
Autor:
Léget, P. -F., Gangler, E., Mondon, F., Aldering, G., Antilogus, P., Aragon, C., Bailey, S., Baltay, C., Barbary, K., Bongard, S., Boone, K., Buton, C., Chotard, N., Copin, Y., Dixon, S., Fagrelius, P., Feindt, U., Fouchez, D., Hayden, B., Hillebrandt, W., Kim, A., Kowalski, M., Kuesters, D., Lombardo, S., Lin, Q., Nordin, J., Pain, R., Pecontal, E., Pereira, R., Perlmutter, S., Pruzhinskaya, M. V., 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.
Publikováno v:
A&A 636, A46 (2020)
Type Ia Supernovae (SNe Ia) are widely used to measure the expansion of the Universe. Improving distance measurements of SNe Ia is one technique to better constrain the acceleration of expansion and determine its physical nature. This document develo
Externí odkaz:
http://arxiv.org/abs/1909.11239