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Euclid preparation. XXXI. The effect of the variations in photometric passbands on photometric-redshift accuracy

Fuente: arXiv

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Autores principales:	Euclid Collaboration, Paltani, Stéphane, Coupon, J., Hartley, W. G., Alvarez-Ayllon, A., Dubath, F., Mohr, J. J., Schirmer, M., Cuillandre, J. -C., Desprez, G., Ilbert, O., Kuijken, K., Aghanim, N., Altieri, B., Amara, A., Auricchio, N., Baldi, M., Bender, R., Bodendorf, C., Bonino, D., Branchini, E., Brescia, M., Brinchmann, J., Camera, S., Capobianco, V., Carbone, C., Cardone, V. F., Carretero, J., Castander, F. J., Castellano, M., Cavuoti, S., Cledassou, R., Congedo, G., Conselice, C. J., Conversi, L., Copin, Y., Corcione, L., Courbin, F., Cropper, M., Da Silva, A., Degaudenzi, H., Dinis, J., Douspis, M., Dupac, X., Dusini, S., Farrens, S., Ferriol, S., Fosalba, P., Frailis, M., Franceschi, E., Franzetti, P., Galeotta, S., Garilli, B., Gillard, W., Gillis, B., Giocoli, C., Grazian, A., Haugan, S. V., Hoekstra, H., Hornstrup, A., Hudelot, P., Jahnke, K., Kümmel, M., Kermiche, S., Kiessling, A., Kilbinger, M., Kitching, T., Kohley, R., Kubik, B., Kunz, M., Kurki-Suonio, H., Ligori, S., Lilje, P. B., Lloro, I., Maiorano, E., Mansutti, O., Marggraf, O., Markovic, K., Marulli, F., Massey, R., Masters, D. C., Maurogordato, S., McCracken, H. J., Medinaceli, E., Mei, S., Melchior, M., Meneghetti, M., Merlin, E., Meylan, G., Moresco, M., Moscardini, L., Munari, E., Niemi, S. -M., Nightingale, J., Padilla, C., Pasian, F., Pedersen, K., Percival, W. J., Pettorino, V., Polenta, G., Poncet, M., Popa, L. A., Raison, F., Rebolo, R., Renzi, A., Rhodes, J., Riccio, G., Romelli, E., Roncarelli, M., Rossetti, E., Saglia, R., Sapone, D., Sartoris, B., Schneider, P., Secroun, A., Sirignano, C., Sirri, G., Skottfelt, J., Stanco, L., Starck, J. -L., Surace, C., Tallada-Crespí, P., Tereno, I., Toledo-Moreo, R., Torradeflot, F., Tutusaus, I., Valentijn, E. A., Valenziano, L., Vassallo, T., Wang, Y., Zamorani, G., Zoubian, J., Andreon, S., Aussel, H., Bardelli, S., Bolzonella, M., Boucaud, A., Di Ferdinando, D., Farina, M., Graciá-Carpio, J., Lindholm, V., Maino, D., Mauri, N., Neissner, C., Scottez, V., Zucca, E., Baccigalupi, C., Ballardini, M., Biviano, A., Blanchard, A., Borgani, S., Borlaff, A. S., Burigana, C., Cabanac, R., Cappi, A., Carvalho, C. S., Casas, S., Castignani, G., Chambers, K., Cooray, A. R., Courtois, H. M., Cucciati, O., Davini, S., De Lucia, G., Dole, H., Escartin, J. A., Escoffier, S., Finelli, F., Fotopoulou, S., Ganga, K., George, K., Gozaliasl, G., Hildebrandt, H., Hook, I., Muñoz, A. Jimenez, Joachimi, B., Kansal, V., Keihanen, E., Kirkpatrick, C. C., Loureiro, A., Macias-Perez, J., Maggio, G., Magliocchetti, M., Maoli, R., Marcin, S., Martinelli, M., Martinet, N., Matthew, S., Maurin, L., Metcalf, R. B., Monaco, P., Morgante, G., Nadathur, S., Nucita, A. A., Patrizii, L., Pollack, J. E., Popa, V., Porciani, C., Potter, D., Pourtsidou, A., Pozzetti, L., Pöntinen, M., Reimberg, P., Sánchez, A. G., Sakr, Z., Sefusatti, E., Sereno, M., Mancini, A. Spurio, Stadel, J., Steinwagner, J., Teyssier, R., Valieri, C., Valiviita, J., van Mierlo, S. E., Veropalumbo, A., Viel, M., Weaver, J. R.
Formato:	Preprint
Publicado:	2023
Materias:	Cosmology and Nongalactic Astrophysics
Acceso en línea:	Acceder al recurso
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

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author	Euclid Collaboration Paltani, Stéphane Coupon, J. Hartley, W. G. Alvarez-Ayllon, A. Dubath, F. Mohr, J. J. Schirmer, M. Cuillandre, J. -C. Desprez, G. Ilbert, O. Kuijken, K. Aghanim, N. Altieri, B. Amara, A. Auricchio, N. Baldi, M. Bender, R. Bodendorf, C. Bonino, D. Branchini, E. Brescia, M. Brinchmann, J. Camera, S. Capobianco, V. Carbone, C. Cardone, V. F. Carretero, J. Castander, F. J. Castellano, M. Cavuoti, S. Cledassou, R. Congedo, G. Conselice, C. J. Conversi, L. Copin, Y. Corcione, L. Courbin, F. Cropper, M. Da Silva, A. Degaudenzi, H. Dinis, J. Douspis, M. Dupac, X. Dusini, S. Farrens, S. Ferriol, S. Fosalba, P. Frailis, M. Franceschi, E. Franzetti, P. Galeotta, S. Garilli, B. Gillard, W. Gillis, B. Giocoli, C. Grazian, A. Haugan, S. V. Hoekstra, H. Hornstrup, A. Hudelot, P. Jahnke, K. Kümmel, M. Kermiche, S. Kiessling, A. Kilbinger, M. Kitching, T. Kohley, R. Kubik, B. Kunz, M. Kurki-Suonio, H. Ligori, S. Lilje, P. B. Lloro, I. Maiorano, E. Mansutti, O. Marggraf, O. Markovic, K. Marulli, F. Massey, R. Masters, D. C. Maurogordato, S. McCracken, H. J. Medinaceli, E. Mei, S. Melchior, M. Meneghetti, M. Merlin, E. Meylan, G. Moresco, M. Moscardini, L. Munari, E. Niemi, S. -M. Nightingale, J. Padilla, C. Pasian, F. Pedersen, K. Percival, W. J. Pettorino, V. Polenta, G. Poncet, M. Popa, L. A. Raison, F. Rebolo, R. Renzi, A. Rhodes, J. Riccio, G. Romelli, E. Roncarelli, M. Rossetti, E. Saglia, R. Sapone, D. Sartoris, B. Schneider, P. Secroun, A. Sirignano, C. Sirri, G. Skottfelt, J. Stanco, L. Starck, J. -L. Surace, C. Tallada-Crespí, P. Tereno, I. Toledo-Moreo, R. Torradeflot, F. Tutusaus, I. Valentijn, E. A. Valenziano, L. Vassallo, T. Wang, Y. Zamorani, G. Zoubian, J. Andreon, S. Aussel, H. Bardelli, S. Bolzonella, M. Boucaud, A. Di Ferdinando, D. Farina, M. Graciá-Carpio, J. Lindholm, V. Maino, D. Mauri, N. Neissner, C. Scottez, V. Zucca, E. Baccigalupi, C. Ballardini, M. Biviano, A. Blanchard, A. Borgani, S. Borlaff, A. S. Burigana, C. Cabanac, R. Cappi, A. Carvalho, C. S. Casas, S. Castignani, G. Chambers, K. Cooray, A. R. Courtois, H. M. Cucciati, O. Davini, S. De Lucia, G. Dole, H. Escartin, J. A. Escoffier, S. Finelli, F. Fotopoulou, S. Ganga, K. George, K. Gozaliasl, G. Hildebrandt, H. Hook, I. Muñoz, A. Jimenez Joachimi, B. Kansal, V. Keihanen, E. Kirkpatrick, C. C. Loureiro, A. Macias-Perez, J. Maggio, G. Magliocchetti, M. Maoli, R. Marcin, S. Martinelli, M. Martinet, N. Matthew, S. Maurin, L. Metcalf, R. B. Monaco, P. Morgante, G. Nadathur, S. Nucita, A. A. Patrizii, L. Pollack, J. E. Popa, V. Porciani, C. Potter, D. Pourtsidou, A. Pozzetti, L. Pöntinen, M. Reimberg, P. Sánchez, A. G. Sakr, Z. Sefusatti, E. Sereno, M. Mancini, A. Spurio Stadel, J. Steinwagner, J. Teyssier, R. Valieri, C. Valiviita, J. van Mierlo, S. E. Veropalumbo, A. Viel, M. Weaver, J. R.
author_facet	Euclid Collaboration Paltani, Stéphane Coupon, J. Hartley, W. G. Alvarez-Ayllon, A. Dubath, F. Mohr, J. J. Schirmer, M. Cuillandre, J. -C. Desprez, G. Ilbert, O. Kuijken, K. Aghanim, N. Altieri, B. Amara, A. Auricchio, N. Baldi, M. Bender, R. Bodendorf, C. Bonino, D. Branchini, E. Brescia, M. Brinchmann, J. Camera, S. Capobianco, V. Carbone, C. Cardone, V. F. Carretero, J. Castander, F. J. Castellano, M. Cavuoti, S. Cledassou, R. Congedo, G. Conselice, C. J. Conversi, L. Copin, Y. Corcione, L. Courbin, F. Cropper, M. Da Silva, A. Degaudenzi, H. Dinis, J. Douspis, M. Dupac, X. Dusini, S. Farrens, S. Ferriol, S. Fosalba, P. Frailis, M. Franceschi, E. Franzetti, P. Galeotta, S. Garilli, B. Gillard, W. Gillis, B. Giocoli, C. Grazian, A. Haugan, S. V. Hoekstra, H. Hornstrup, A. Hudelot, P. Jahnke, K. Kümmel, M. Kermiche, S. Kiessling, A. Kilbinger, M. Kitching, T. Kohley, R. Kubik, B. Kunz, M. Kurki-Suonio, H. Ligori, S. Lilje, P. B. Lloro, I. Maiorano, E. Mansutti, O. Marggraf, O. Markovic, K. Marulli, F. Massey, R. Masters, D. C. Maurogordato, S. McCracken, H. J. Medinaceli, E. Mei, S. Melchior, M. Meneghetti, M. Merlin, E. Meylan, G. Moresco, M. Moscardini, L. Munari, E. Niemi, S. -M. Nightingale, J. Padilla, C. Pasian, F. Pedersen, K. Percival, W. J. Pettorino, V. Polenta, G. Poncet, M. Popa, L. A. Raison, F. Rebolo, R. Renzi, A. Rhodes, J. Riccio, G. Romelli, E. Roncarelli, M. Rossetti, E. Saglia, R. Sapone, D. Sartoris, B. Schneider, P. Secroun, A. Sirignano, C. Sirri, G. Skottfelt, J. Stanco, L. Starck, J. -L. Surace, C. Tallada-Crespí, P. Tereno, I. Toledo-Moreo, R. Torradeflot, F. Tutusaus, I. Valentijn, E. A. Valenziano, L. Vassallo, T. Wang, Y. Zamorani, G. Zoubian, J. Andreon, S. Aussel, H. Bardelli, S. Bolzonella, M. Boucaud, A. Di Ferdinando, D. Farina, M. Graciá-Carpio, J. Lindholm, V. Maino, D. Mauri, N. Neissner, C. Scottez, V. Zucca, E. Baccigalupi, C. Ballardini, M. Biviano, A. Blanchard, A. Borgani, S. Borlaff, A. S. Burigana, C. Cabanac, R. Cappi, A. Carvalho, C. S. Casas, S. Castignani, G. Chambers, K. Cooray, A. R. Courtois, H. M. Cucciati, O. Davini, S. De Lucia, G. Dole, H. Escartin, J. A. Escoffier, S. Finelli, F. Fotopoulou, S. Ganga, K. George, K. Gozaliasl, G. Hildebrandt, H. Hook, I. Muñoz, A. Jimenez Joachimi, B. Kansal, V. Keihanen, E. Kirkpatrick, C. C. Loureiro, A. Macias-Perez, J. Maggio, G. Magliocchetti, M. Maoli, R. Marcin, S. Martinelli, M. Martinet, N. Matthew, S. Maurin, L. Metcalf, R. B. Monaco, P. Morgante, G. Nadathur, S. Nucita, A. A. Patrizii, L. Pollack, J. E. Popa, V. Porciani, C. Potter, D. Pourtsidou, A. Pozzetti, L. Pöntinen, M. Reimberg, P. Sánchez, A. G. Sakr, Z. Sefusatti, E. Sereno, M. Mancini, A. Spurio Stadel, J. Steinwagner, J. Teyssier, R. Valieri, C. Valiviita, J. van Mierlo, S. E. Veropalumbo, A. Viel, M. Weaver, J. R.
contents	The technique of photometric redshifts has become essential for the exploitation of multi-band extragalactic surveys. While the requirements on photo-zs for the study of galaxy evolution mostly pertain to the precision and to the fraction of outliers, the most stringent requirement in their use in cosmology is on the accuracy, with a level of bias at the sub-percent level for the Euclid cosmology mission. A separate, and challenging, calibration process is needed to control the bias at this level of accuracy. The bias in photo-zs has several distinct origins that may not always be easily overcome. We identify here one source of bias linked to the spatial or time variability of the passbands used to determine the photometric colours of galaxies. We first quantified the effect as observed on several well-known photometric cameras, and found in particular that, due to the properties of optical filters, the redshifts of off-axis sources are usually overestimated. We show using simple simulations that the detailed and complex changes in the shape can be mostly ignored and that it is sufficient to know the mean wavelength of the passbands of each photometric observation to correct almost exactly for this bias; the key point is that this mean wavelength is independent of the spectral energy distribution of the source}. We use this property to propose a correction that can be computationally efficiently implemented in some photo-z algorithms, in particular template-fitting. We verified that our algorithm, implemented in the new photo-z code Phosphoros, can effectively reduce the bias in photo-zs on real data using the CFHTLS T007 survey, with an average measured bias Delta z over the redshift range 0.4<z<0.7 decreasing by about 0.02, specifically from Delta z~0.04 to Delta z~0.02 around z=0.5. Our algorithm is also able to produce corrected photometry for other applications.
format	Preprint
id	arxiv_https___arxiv_org_abs_2310_14716
institution	arXiv
publishDate	2023
record_format	arxiv
spellingShingle	Euclid preparation. XXXI. The effect of the variations in photometric passbands on photometric-redshift accuracy Euclid Collaboration Paltani, Stéphane Coupon, J. Hartley, W. G. Alvarez-Ayllon, A. Dubath, F. Mohr, J. J. Schirmer, M. Cuillandre, J. -C. Desprez, G. Ilbert, O. Kuijken, K. Aghanim, N. Altieri, B. Amara, A. Auricchio, N. Baldi, M. Bender, R. Bodendorf, C. Bonino, D. Branchini, E. Brescia, M. Brinchmann, J. Camera, S. Capobianco, V. Carbone, C. Cardone, V. F. Carretero, J. Castander, F. J. Castellano, M. Cavuoti, S. Cledassou, R. Congedo, G. Conselice, C. J. Conversi, L. Copin, Y. Corcione, L. Courbin, F. Cropper, M. Da Silva, A. Degaudenzi, H. Dinis, J. Douspis, M. Dupac, X. Dusini, S. Farrens, S. Ferriol, S. Fosalba, P. Frailis, M. Franceschi, E. Franzetti, P. Galeotta, S. Garilli, B. Gillard, W. Gillis, B. Giocoli, C. Grazian, A. Haugan, S. V. Hoekstra, H. Hornstrup, A. Hudelot, P. Jahnke, K. Kümmel, M. Kermiche, S. Kiessling, A. Kilbinger, M. Kitching, T. Kohley, R. Kubik, B. Kunz, M. Kurki-Suonio, H. Ligori, S. Lilje, P. B. Lloro, I. Maiorano, E. Mansutti, O. Marggraf, O. Markovic, K. Marulli, F. Massey, R. Masters, D. C. Maurogordato, S. McCracken, H. J. Medinaceli, E. Mei, S. Melchior, M. Meneghetti, M. Merlin, E. Meylan, G. Moresco, M. Moscardini, L. Munari, E. Niemi, S. -M. Nightingale, J. Padilla, C. Pasian, F. Pedersen, K. Percival, W. J. Pettorino, V. Polenta, G. Poncet, M. Popa, L. A. Raison, F. Rebolo, R. Renzi, A. Rhodes, J. Riccio, G. Romelli, E. Roncarelli, M. Rossetti, E. Saglia, R. Sapone, D. Sartoris, B. Schneider, P. Secroun, A. Sirignano, C. Sirri, G. Skottfelt, J. Stanco, L. Starck, J. -L. Surace, C. Tallada-Crespí, P. Tereno, I. Toledo-Moreo, R. Torradeflot, F. Tutusaus, I. Valentijn, E. A. Valenziano, L. Vassallo, T. Wang, Y. Zamorani, G. Zoubian, J. Andreon, S. Aussel, H. Bardelli, S. Bolzonella, M. Boucaud, A. Di Ferdinando, D. Farina, M. Graciá-Carpio, J. Lindholm, V. Maino, D. Mauri, N. Neissner, C. Scottez, V. Zucca, E. Baccigalupi, C. Ballardini, M. Biviano, A. Blanchard, A. Borgani, S. Borlaff, A. S. Burigana, C. Cabanac, R. Cappi, A. Carvalho, C. S. Casas, S. Castignani, G. Chambers, K. Cooray, A. R. Courtois, H. M. Cucciati, O. Davini, S. De Lucia, G. Dole, H. Escartin, J. A. Escoffier, S. Finelli, F. Fotopoulou, S. Ganga, K. George, K. Gozaliasl, G. Hildebrandt, H. Hook, I. Muñoz, A. Jimenez Joachimi, B. Kansal, V. Keihanen, E. Kirkpatrick, C. C. Loureiro, A. Macias-Perez, J. Maggio, G. Magliocchetti, M. Maoli, R. Marcin, S. Martinelli, M. Martinet, N. Matthew, S. Maurin, L. Metcalf, R. B. Monaco, P. Morgante, G. Nadathur, S. Nucita, A. A. Patrizii, L. Pollack, J. E. Popa, V. Porciani, C. Potter, D. Pourtsidou, A. Pozzetti, L. Pöntinen, M. Reimberg, P. Sánchez, A. G. Sakr, Z. Sefusatti, E. Sereno, M. Mancini, A. Spurio Stadel, J. Steinwagner, J. Teyssier, R. Valieri, C. Valiviita, J. van Mierlo, S. E. Veropalumbo, A. Viel, M. Weaver, J. R. Cosmology and Nongalactic Astrophysics The technique of photometric redshifts has become essential for the exploitation of multi-band extragalactic surveys. While the requirements on photo-zs for the study of galaxy evolution mostly pertain to the precision and to the fraction of outliers, the most stringent requirement in their use in cosmology is on the accuracy, with a level of bias at the sub-percent level for the Euclid cosmology mission. A separate, and challenging, calibration process is needed to control the bias at this level of accuracy. The bias in photo-zs has several distinct origins that may not always be easily overcome. We identify here one source of bias linked to the spatial or time variability of the passbands used to determine the photometric colours of galaxies. We first quantified the effect as observed on several well-known photometric cameras, and found in particular that, due to the properties of optical filters, the redshifts of off-axis sources are usually overestimated. We show using simple simulations that the detailed and complex changes in the shape can be mostly ignored and that it is sufficient to know the mean wavelength of the passbands of each photometric observation to correct almost exactly for this bias; the key point is that this mean wavelength is independent of the spectral energy distribution of the source}. We use this property to propose a correction that can be computationally efficiently implemented in some photo-z algorithms, in particular template-fitting. We verified that our algorithm, implemented in the new photo-z code Phosphoros, can effectively reduce the bias in photo-zs on real data using the CFHTLS T007 survey, with an average measured bias Delta z over the redshift range 0.4<z<0.7 decreasing by about 0.02, specifically from Delta z~0.04 to Delta z~0.02 around z=0.5. Our algorithm is also able to produce corrected photometry for other applications.
title	Euclid preparation. XXXI. The effect of the variations in photometric passbands on photometric-redshift accuracy
topic	Cosmology and Nongalactic Astrophysics
url	https://arxiv.org/abs/2310.14716