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A catalog of polychromatic bulge-disc decompositions of ~17.600 galaxies in CANDELS

A catalog of polychromatic bulge-disc decompositions of ~17.600 galaxies in CANDELS
A catalog of polychromatic bulge-disc decompositions of ~17.600 galaxies in CANDELS

Understanding how bulges grow in galaxies is a critical step towards unveiling the link between galaxy morphology and star-formation. To do so, it is necessary to decompose large sample of galaxies at different epochs into their main components (bulges and discs). This is particularly challenging, especially at high redshifts, where galaxies are poorly resolved. This work presents a catalog of bulge-disc decompositions of the surface brightness profiles of ~17.600 H-band-selected galaxies in the CANDELS fields (F160W < 23, 0 < z < 2) in 4 to 7 filters covering a spectral range of 430-1600 nm. This is the largest available catalog of this kind up to z = 2. By using a novel approach based on deep learning to select the best model to fit, we manage to control systematics arising from wrong model selection and obtain less-contaminated samples than previous works. We show that the derived structural properties are within ~10-20%of random uncertainties. We then fit stellar population models to the decomposed spectral energy distributions of bulges and discs and derive stellar masses (and stellar mass bulge-to-total ratios) as well as rest-frame colors (U, V, J) for bulges and discs separately. All data products are publicly released with this paper and through the web page https://lerma.obspm.fr/huertas/form CANDELS and will be used for scientific analysis in forthcoming works.

Galaxies: bulges, Galaxies: fundamental parameters, Galaxies: high-redshift
0035-8711
5410-5426
Dimauro, Paola
a2d13aec-153e-4dcd-a439-54e8c7d2c50b
Huertas-Company, Marc
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Daddi, Emanuele
6beec79e-b989-474b-a97c-979389d75f9e
Pérez-González, Pablo G.
c43284b8-27ac-4aa2-8bbd-f6ffce88c81c
Bernardi, Mariangela
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Barro, Guillermo
d493bcc9-b8f8-4c20-89c9-1a02ab126aeb
Buitrago, Fernando
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Caro, Fernando
7523b37b-2b21-4db1-89fd-15698d54b2d6
Cattaneo, Andrea
c40e9b8b-8fe3-4ed1-a8e7-ecdf42c436d0
Dominguez-Sánchez, Helena
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Faber, Sandra M.
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Häußler, Boris
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Kocevski, Dale D.
7c23fbe4-c716-4c33-ab0b-ddbee14c0c16
Koekemoer, Anton M.
607a8902-9e12-45a8-8388-58bbf13a3455
Koo, David C.
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Lee, Christoph T.
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Mei, Simona
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Margalef-Bentabol, Berta
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Primack, Joel
bdba2372-b639-4495-8f6d-096d4f547260
Rodriguez-Puebla, Aldo
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Salvato, Mara
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Shankar, Francesco
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Tuccillo, Diego
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Dimauro, Paola
a2d13aec-153e-4dcd-a439-54e8c7d2c50b
Huertas-Company, Marc
6fe27f7c-356c-448b-bcb6-c21a84bab91a
Daddi, Emanuele
6beec79e-b989-474b-a97c-979389d75f9e
Pérez-González, Pablo G.
c43284b8-27ac-4aa2-8bbd-f6ffce88c81c
Bernardi, Mariangela
51f0929c-ba65-4d9c-a814-673442f48d75
Barro, Guillermo
d493bcc9-b8f8-4c20-89c9-1a02ab126aeb
Buitrago, Fernando
9f4290e1-3704-422c-aba8-99e91f637451
Caro, Fernando
7523b37b-2b21-4db1-89fd-15698d54b2d6
Cattaneo, Andrea
c40e9b8b-8fe3-4ed1-a8e7-ecdf42c436d0
Dominguez-Sánchez, Helena
83437e88-4b62-4bc0-b7c8-0baa21663dbe
Faber, Sandra M.
4c882717-70a2-4f17-9e66-5108240c5414
Häußler, Boris
7145ce0e-0c14-4bcc-86ca-9ee9eedc56b0
Kocevski, Dale D.
7c23fbe4-c716-4c33-ab0b-ddbee14c0c16
Koekemoer, Anton M.
607a8902-9e12-45a8-8388-58bbf13a3455
Koo, David C.
40d9e45b-dca9-4088-a33a-9091b61ff8ec
Lee, Christoph T.
0ea46ebe-6026-4bf5-a8f9-ded7a0526d9d
Mei, Simona
2a1ef2b5-81a2-4648-86b7-6033de92512d
Margalef-Bentabol, Berta
71d21b8d-e4b0-4a82-9649-3ce34da5acc4
Primack, Joel
bdba2372-b639-4495-8f6d-096d4f547260
Rodriguez-Puebla, Aldo
9744c5c9-2f07-4cd4-a2a2-fab6c9c3c5ce
Salvato, Mara
4cf63513-bd88-4c6b-9265-c0dd10ca1de0
Shankar, Francesco
b10c91e4-85cd-4394-a18a-d4f049fd9cdb
Tuccillo, Diego
8b41867f-8e74-4808-bce1-57b6d6e22c54

Dimauro, Paola, Huertas-Company, Marc, Daddi, Emanuele, Pérez-González, Pablo G., Bernardi, Mariangela, Barro, Guillermo, Buitrago, Fernando, Caro, Fernando, Cattaneo, Andrea, Dominguez-Sánchez, Helena, Faber, Sandra M., Häußler, Boris, Kocevski, Dale D., Koekemoer, Anton M., Koo, David C., Lee, Christoph T., Mei, Simona, Margalef-Bentabol, Berta, Primack, Joel, Rodriguez-Puebla, Aldo, Salvato, Mara, Shankar, Francesco and Tuccillo, Diego (2018) A catalog of polychromatic bulge-disc decompositions of ~17.600 galaxies in CANDELS. Monthly Notices of the Royal Astronomical Society, 478 (4), 5410-5426. (doi:10.1093/mnras/sty1379).

Record type: Article

Abstract

Understanding how bulges grow in galaxies is a critical step towards unveiling the link between galaxy morphology and star-formation. To do so, it is necessary to decompose large sample of galaxies at different epochs into their main components (bulges and discs). This is particularly challenging, especially at high redshifts, where galaxies are poorly resolved. This work presents a catalog of bulge-disc decompositions of the surface brightness profiles of ~17.600 H-band-selected galaxies in the CANDELS fields (F160W < 23, 0 < z < 2) in 4 to 7 filters covering a spectral range of 430-1600 nm. This is the largest available catalog of this kind up to z = 2. By using a novel approach based on deep learning to select the best model to fit, we manage to control systematics arising from wrong model selection and obtain less-contaminated samples than previous works. We show that the derived structural properties are within ~10-20%of random uncertainties. We then fit stellar population models to the decomposed spectral energy distributions of bulges and discs and derive stellar masses (and stellar mass bulge-to-total ratios) as well as rest-frame colors (U, V, J) for bulges and discs separately. All data products are publicly released with this paper and through the web page https://lerma.obspm.fr/huertas/form CANDELS and will be used for scientific analysis in forthcoming works.

This record has no associated files available for download.

More information

Accepted/In Press date: 17 May 2018
e-pub ahead of print date: 25 May 2018
Published date: 21 August 2018
Keywords: Galaxies: bulges, Galaxies: fundamental parameters, Galaxies: high-redshift

Identifiers

Local EPrints ID: 424780
URI: http://eprints.soton.ac.uk/id/eprint/424780
ISSN: 0035-8711
PURE UUID: f73104a6-3c9d-4e6d-a318-e2adab3a6ac6

Catalogue record

Date deposited: 05 Oct 2018 11:45
Last modified: 25 Nov 2021 18:53

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Contributors

Author: Paola Dimauro
Author: Marc Huertas-Company
Author: Emanuele Daddi
Author: Pablo G. Pérez-González
Author: Mariangela Bernardi
Author: Guillermo Barro
Author: Fernando Buitrago
Author: Fernando Caro
Author: Andrea Cattaneo
Author: Helena Dominguez-Sánchez
Author: Sandra M. Faber
Author: Boris Häußler
Author: Dale D. Kocevski
Author: Anton M. Koekemoer
Author: David C. Koo
Author: Christoph T. Lee
Author: Simona Mei
Author: Berta Margalef-Bentabol
Author: Joel Primack
Author: Aldo Rodriguez-Puebla
Author: Mara Salvato
Author: Diego Tuccillo

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