2024-03-29T07:27:29Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1100022021-10-28T15:40:39Zcom_10261_97com_10261_4com_10261_45com_10261_37col_10261_350col_10261_298col_10261_290
The ALHAMBRA survey: reliable morphological catalogue of 22 051 early- and late-type galaxies
Pović, Mirjana
Huertas-Company, M.
Aguerri, J.A.L.
Márquez, Isabel
Masegosa, Josefa
Husillos, César
Molino, Alberto
Cristóbal-Hornillos, David
Perea, Jaime
Benítez, Narciso
Olmo, Ascensión del
Fernández-Soto, Alberto
Jiménez-Teja, Y.
Moles, Mariano
Alfaro, Emilio J.
Aparicio Villegas, Teresa
Ascaso, Begoña
Broadhurst, T.
Cabrera-Caño, Jesús
Castander, Francisco J.
Cepa, Jordi
Fernández Lorenzo, M.
Cerviño, Miguel
González Delgado, Rosa M.
Infante, Leopoldo
López-Sanjuan, C.
Martínez, Vicente J.
Matute, Israel
Oteo, I.
Pérez-García, Ana M.
Prada, Francisco
Quintana, José María
Generalitat Valenciana
Junta de Andalucía
Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas (España)
European Commission
Advanced Large Homogeneous Area Medium Band Redshift Astronomical (ALHAMBRA) is photometric survey designed to trace the cosmic evolution and cosmic variance. It covers a large area of ~4 deg2 in eight fields, where seven fields overlap with other surveys, allowing us to have complementary data in other wavelengths. All observations were carried out in 20 continuous, medium band (30 nm width) optical and 3 near-infrared (JHK) bands, providing the precise measurements of photometric redshifts. In addition, morphological classification of galaxies is crucial for any kind of galaxy formation and cosmic evolution studies, providing the information about star formation histories, their environment and interactions, internal perturbations, etc. We present a morphological classification of >40 000 galaxies in the ALHAMBRA survey. We associate to every galaxy a probability to be early type using the automated Bayesian code GALSVM. Despite of the spatial resolution of theALHAMBRAimages (~1 arcsec), for 22 051 galaxies, we obtained the contamination by other type of less than 10 per cent. Of those, 1640 and 10 322 galaxies are classified as early-(down to redshifts ~0.5) and late-type (down to redshifts ~1.0), respectively, with magnitudes F613W ≤ 22.0. In addition, for magnitude range 22.0 < F613W ≤ 23.0, we classified other 10 089 late-type galaxies with redshifts ≤1.3.We show that the classified objects populate the expected regions in the colour-mass and colour-magnitude planes. The presented data set is especially attractive given the homogeneous multiwavelength coverage available in the ALHAMBRA fields, and is intended to be used in a variety of scientific applications. The low-contamination catalogue (<10 per cent) is made publicly available with this paper. © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.
2015-01-30T13:00:00Z
2015-01-30T13:00:00Z
2013
2015-01-30T13:00:00Z
artículo
Monthly Notices of the Royal Astronomical Society 435(4): 3444-3461 (2013)
http://hdl.handle.net/10261/110002
10.1093/mnras/stt1538
http://dx.doi.org/10.13039/501100003359
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100003339
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100011011
eng
Publisher's version
http://dx.doi.org/10.1093/mnras/stt1538
openAccess
Oxford University Press