Browsing by Author "Molino, A."
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- ItemA Ks-band-selected catalogue of objects in the ALHAMBRA survey(2017) Nieves Seoane, L.; Fernandez Soto, A.; Arnalte Mur, P.; Molino, A.; Stefanon, M.; Ferreras, I.; Ascaso, B.; Ballesteros, F.; Infante Lira, Leopoldo; Troncoso Iribarren, Paulina Alejandra
- ItemCLASH : Accurate photometric redshifts with 14 HST bands in massive galaxy cluster cores(2017) Lazkoz, R.; Lemze, D.; Maoz, D.; Mercurio, A.; Meneghetti, M.; Merten, J.; Moustakas, L.; Nonino, M.; Orgaz, S.; Infante Lira, Leopoldo; Riess, A.; Rodney, S.; Sayers, J.; Umetsu, K.; Zheng, W.; Zitrin, A.; Molino, A.; Benítez, N.; Ascaso, B.; Coe, D.; Postman M.; Jouvel, S.; Host, O.; Lahav O.; Seitz, S.; Medezinski, E.; Rosati, P.; Schoenell, W.; Koekemoer, A.; Jiménez-Teja, Y.; Broadhurst, T.; Melchior, P.; Balestra, I.; Bartelmann, M.; Bouwens, R.; Bradley, L.; Czakon, N.; Donahue, M.; Ford, H.; Graur, O.; Graves, G.; Grillo, C.; Jha, S.; Kelson, D.
- ItemCLASH : Photometric redshifts with 16 HST bands in galaxy cluster fields(2014) Jouvel, S.; Host, O.; Lahav, O.; Seitz, S.; Molino, A.; Coe, D.; Postman, M.; Moustakas, L.; Benítez, N.; Infante Lira, Leopoldo
- ItemCLASH-VLT: spectroscopic confirmation of z=6.11 quintuply lensed galaxy in the Frontier Fields cluster RXC J2248.7-4431(2013) Balestra, I.; Vanzella, E.; Rosati, P.; Monna, A.; Grillo, C.; Nonino, M.; Mercurio, A.; Biviano, A.; Bradley, L.; Coe, D.; Fritz, A.; Postman, M.; Seitz, S.; Scodeggio, M.; Tozzi, P.; Zhengll, W.; Ziegler, B.; Zitrin, A.; Annunziatella, M.; Bartelmann, M.; Benitez, N.; Broadhurst, T.; Bouwens, R.; Czoske, O.; Donahue, M.; Ford, H.; Girardi, M.; Infante, L.; Jouvel, S.; Kelson, D.; Koekemoer, A.; Kuchner, U.; Lemze, D.; Lombardi, M.; Maier, C.; Medezinski, E.; Melchior, P.; Meneghetti, M.; Merten, J.; Molino, A.; Moustakas, L.; Presotto, V.; Smit, R.; Umetsu, K.We present VIsible Multi-Object Spectrograph (VIMOS) observations of a z similar to 6 galaxy quintuply imaged by the Frontier Fields galaxy cluster RXC J2248.7-4431 (z = 0.348). This sub-L*, high-z galaxy has been recently discovered by Monna et al. (2013) using dropout techniques with the 16-band HST photometry acquired as part of the Cluster Lensing And Supernova survey with Hubble (CLASH). Obtained as part of the CLASH-VLT survey, the VIMOS medium-resolution spectra of this source show a very faint continuum between similar to 8700 angstrom and similar to 9300 angstrom and a prominent emission line at 8643 angstrom, which can be readily identified with Lyman-alpha at z = 6.110 +/- 0.002. The emission line exhibits an asymmetric profile, with a more pronounced red wing. The rest-frame equivalent width of the line is EW = 79 +/- 10 angstrom, relatively well constrained thanks to the detection of the UV continuum, which is rarely achieved for a sub-L* galaxy at this redshift. After correcting for magnification, the star formation rate (SFR) estimated from the Ly alpha line is SFR(Ly alpha) = 11 M-circle dot yr(-l) and that estimated from the UV data is SFR(UV) = 3 M-circle dot yr(-1). We estimate that the effective radius of the source is R-e less than or similar to 0.4 kpc, which implies a star formation surface mass density Sigma(SFR) > 6 M(circle dot)yr(-1) kpc(-2) and, using the Kennicutt-Schmidt relation, a gas surface mass density Sigma(gas) > 10(3) M(circle dot)pc(-2). Our results support the idea that this magnified, distant galaxy is a young and compact object with luminosity 0.4 L* at z = 6, when the Universe was just 1 Gyr old, with a similar amount of mass in gas and stars. In the spirit of the Frontier Fields initiative, we also publish the redshifts of several multiply imaged sources and other background objects, which will help improving the strong-lensing model of this galaxy cluster.
- ItemGalaxy clusters and groups in the ALHAMBRA survey(2015) Ascaso, B.; Benitez, N.; Fernandez-Soto, A.; Arnalte-Mur, P.; Lopez-Sanjuan, C.; Molino, A.; Schoenell, W.; Jimenez-Teja, Y.; Merson, A. I.; Infante Lira, Leopoldo; Díaz-Garcia, L. A.; Martınez, V. J.; Cenarro, A. J.; Dupke, R.; Marquez, I.; Masegosa, J.; Nieves-Seoane, L.; Povic, M.; Varela, J.; Huertas-Company, M.
- ItemHigh redshift galaxies in the ALHAMBRA survey: I. Selection method and number counts based on redshift PDFs(2015) Viironen, K.; Marin, A.; Lopez, C.; Varela, J.; Chaves, J.; Cristobal, D.; Molino, A.; Fernandez, A.; Vilella Rojo G.; Infante Lira, Leopoldo
- ItemHerschel FIR counterparts of selected Lyα emitters at z ∼ 2.2 Fast evolution since z ∼ 3 or missed obscured AGNs?(2010) Bongiovanni, A.; Oteo, I.; Cepa, J.; Perez Garcia, A. M.; Sanchez-Portal, M.; Ederoclite, A.; Aguerri, J. A. L.; Alfaro, E. J.; Altieri, B.; Andreani, P.; Aparicio-Villegas, M. T.; Aussel, H.; Benitez, N.; Berta, S.; Broadhurst, T.; Cabrera-Cano, J.; Castander, F. J.; Cava, A.; Cervino, M.; Chulani, H.; Cimatti, A.; Cristobal-Hornillos, D.; Daddi, E.; Dominguez, H.; Elbaz, D.; Fernandez-Soto, A.; Schreiber, N. Foerster; Genzel, R.; Gomez, M. F.; Gonzalez Delgado, R. M.; Grazian, A.; Gruppioni, C.; Herreros, J. M.; Iglesias Groth, S.; Infante, L.; Lutz, D.; Magnelli, B.; Magdis, G.; Maiolino, R.; Marquez, I.; Martinez, V. J.; Masegosa, J.; Moles, M.; Molino, A.; Nordon, R.; del Olmo, A.; Perea, J.; Poglitsch, A.; Popesso, P.; Pozzi, F.; Prada, F.; Quintana, J. M.; Riguccini, L.; Rodighiero, G.; Saintonge, A.; Sanchez, S. F.; Santini, P.; Shao, L.; Sturm, E.; Tacconi, L.; Valtchanov, I.Ly alpha emitters (LAEs) are seen everywhere in the redshift domain from local to z similar to 7. Far-infrared (FIR) counterparts of LAEs at different epochs could provide direct clues on dust content, extinction, and spectral energy distribution (SED) for these galaxies. We search for FIR counterparts of LAEs that are optically detected in the GOODS-North field at redshift z similar to 2.2 using data from the Herschel Space Telescope with the Photodetector Array Camera and Spectrometer (PACS). The LAE candidates were isolated via color-magnitude diagram using the medium-band photometry from the ALHAMBRA Survey, ancillary data on GOODS-North, and stellar population models. According to the fitting of these spectral synthesis models and FIR/optical diagnostics, most of them seem to be obscured galaxies whose spectra are AGN-dominated. From the analysis of the optical data, we have observed a fraction of AGN or composite over source total number of similar to 0.75 in the LAE population at z similar to 2.2, which is marginally consistent with the fraction previously observed at z = 2.25 and even at low redshift (0.2 < z < 0.45), but significantly different from the one observed at redshift similar to 3, which could be compatible either with a scenario of rapid change in the AGN fraction between the epochs involved or with a non detection of obscured AGN in other z = 2-3 LAE samples due to lack of deep FIR observations. We found three robust FIR (PACS) counterparts at z similar to 2.2 in GOODS-North. This demonstrates the possibility of finding dust emission in LAEs even at higher redshifts.
- ItemStellar populations of galaxies in the ALHAMBRA survey up to z ∼ 1 III. The stellar content of the quiescent galaxy population during the last 8 Gyr(2019) Diaz-Garcia, L.A.; Cenarro, A.J.; Lopez-Sanjuan, C.; Ferreras, I.; Fernandez-Soto, A.; Delgado, R.M.G.; Marquez, I.; Masegosa, J.; San Roman, I.; Infante Lira, Leopoldo; Viironen, K.; Bonoli, S.; Cerviño, M.; Moles, M.; Cristóbal-Hornillos, D.; Alfaro, E.; Aparicio-Villegas, T.; Benítez, N.; Broadhurst, T.; Cabrera-Caño, J.; Castander, F.J.; Cepa, J.; Husillos, C.; Aguerri, J.A.L.; Martínez, V.J.; Molino, A.; del Olmo, A.; Perea, J.; Prada, F.; Quintana, J.M.
- ItemStellar populations of galaxies in the ALHAMBRA survey up to z∼1 II. Stellar content of quiescent galaxies within the dust-corrected stellar mass–colour and the UVJ colour–colour diagrams(2019) Diaz-Garcia, L.A.; Cenarro, A.J.; Lopez-Sanjuan, C.; Ferreras, I.; Cervino, M.; Fernandez-Soto, A.; Delgado, R.M.G.; Marquez, I.; Povic, M.|Infante Lira, Leopoldo; San Roman, I.; Viironen, K.; Moles, M.; Cristobal-Hornillos, D.; Lopez-Comazzi, A.; Alfaro, E.; Aparicio-Villegas, T.; Benitez, N.; Broadhurst, T.; Cabrera-Cano, J.; Castander, F.J.; Cepa, J.; Husillos, César; Aguerri, J.A.L.; Martínez, V.J.; Masegosa, Josefa; Molino, A.; Olmo, Ascensión del; Perea, Jaime; Prada, Francisco; Quintana, José María
- ItemThe ALHAMBRA survey : Reliable morphological catalogue of 22 051 early- and late-type galaxies(2013) Povic, M.; Huertas Company, M.; Aguerri, J.; Marquez, I.; Masegosa, J.; Husillos, C.; Molino, A.; Cristóbal-Hornillos, D.; Perea, J.; Infante Lira, Leopoldo; Benítez, N.
- ItemThe ALHAMBRA survey : Bayesian photometric redshifts with 23 bands for 3 deg2(2014) Molino, A.; Benítez, N.; Moles, M.; Fernández Soto, A.; Cristóbal-Hornillos, D.; Ascaso, B.; Schoenell, W.; Arnalte-Mur, P.; Jiménez Teja, Y.; Infante Lira, Leopoldo
- ItemThe ALHAMBRA survey: accurate merger fractions derived by PDF analysis of photometrically close pairs(2015) López Sanjuan, C.; Cenarro, A. J.; Varela, J.; Viironen, K.; Molino, A.; Benítez, N.; Arnalte Mur, P.; Ascaso, B.; Díaz García, L. A.; Infante Lira, Leopoldo
- ItemThe ALHAMBRA survey: B-band luminosity function of quiescent and star-forming galaxies at 0.2 <= z < 1 by PDF analysis(2017) López Sanjuan, C.; Varela, J.; Tempel, E.; Benítez, N.; Molino, A.; Viironen, K.; Díaz García, L. A.; Fernández Soto, A.; Santos, W. A.; Infante Lira, Leopoldo
- ItemThe ALHAMBRA survey: Discovery of a faint QSO at z=5.41 (Research Note)(2013) Matute, I.; Masegosa, J.; Marquez, I.; Fernandez-Soto, A.; Husillos, C.; del Olmo, A.; Perea, J.; Povic, M.; Ascaso, B.; Alfaro, E. J.; Moles, M.; Aguerri, J. A. L.; Aparicio-Villegas, T.; Benitez, N.; Broadhurst, T.; Cabrera-Cano, J.; Castander, F. J.; Cepa, J.; Cervino, M.; Cristobal-Hornillos, D.; Infante, L.; Gonzalez Delgado, R. M.; Martinez, V. J.; Molino, A.; Prada, F.; Quintana, J. M.Aims. We aim to illustrate the potentiality of the Advanced Large, Homogeneous Area, Medium-Band Redshift Astronomical (ALHAMBRA) survey to investigate the high-redshift universe through the detection of quasi stellar objects (QSOs) at redshifts higher than 5.
- ItemTHE CLUSTER LENSING AND SUPERNOVA SURVEY WITH HUBBLE (CLASH): STRONG-LENSING ANALYSIS OF A383 FROM 16-BAND HST/WFC3/ACS IMAGING(2011) Zitrin, A.; Broadhurst, T.; Coe, D.; Umetsu, K.; Postman, M.; Benitez, N.; Meneghetti, M.; Medezinski, E.; Jouvel, S.; Bradley, L.; Koekemoer, A.; Zheng, W.; Ford, H.; Merten, J.; Kelson, D.; Lahav, O.; Lemze, D.; Molino, A.; Nonino, M.; Donahue, M.; Rosati, P.; Van der Wel, A.; Bartelmann, M.; Bouwens, R.; Graur, O.; Graves, G.; Host, O.; Infante, L.; Jha, S.; Jimenez-Teja, Y.; Lazkoz, R.; Maoz, D.; McCully, C.; Melchior, P.; Moustakas, L. A.; Ogaz, S.; Patel, B.; Regoes, E.; Riess, A.; Rodney, S.; Seitz, S.We examine the inner mass distribution of the relaxed galaxy cluster A383 (z = 0.189), in deep 16 band Hubble Space Telescope/ACS+WFC3 imaging taken as part of the Cluster Lensing And Supernova survey with Hubble (CLASH) multi-cycle treasury program. Our program is designed to study the dark matter distribution in 25 massive clusters, and balances depth with a wide wavelength coverage, 2000-16000 angstrom, to better identify lensed systems and generate precise photometric redshifts. This photometric information together with the predictive strength of our strong-lensing analysis method identifies 13 new multiply lensed images and candidates, so that a total of 27 multiple images of nine systems are used to tightly constrain the inner mass profile gradient, d log Sigma/d log r similar or equal to -0.6 +/- 0.1 (r < 160 kpc). We find consistency with the standard distance-redshift relation for the full range spanned by the lensed images, 1.01 < z < 6.03, with the higher-redshift sources deflected through larger angles as expected. The inner mass profile derived here is consistent with the results of our independent weak-lensing analysis of wide-field Subaru images, with good agreement in the region of overlap (similar to 0.7-1 arcmin). Combining weak and strong lensing, the overall mass profile is well fitted by a Navarro-Frenk-White profile with M-vir = (5.37(-0.63)(+0.70) +/- 0.26) x 10(14) M-circle dot h(-1) and a relatively high concentration, c(vir) = 8.77(-0.42)(+0.44) +/- 0.23, which lies above the standard c-M relation similar to other well-studied clusters. The critical radius of A383 is modest by the standards of other lensing clusters, r(E) similar or equal to 16 +/- 2 '' (for z(s) = 2.55), so the relatively large number of lensed images uncovered here with precise photometric redshifts validates our imaging strategy for the CLASH survey. In total we aim to provide similarly high-quality lensing data for 25 clusters, 20 of which are X-ray-selected relaxed clusters, enabling a precise determination of the representative mass profile free from lensing bias.
- ItemYOUNG GALAXY CANDIDATES IN THE HUBBLE FRONTIER FIELDS. III. MACS J0717.5+3745(2016) Laporte, Nicolás; Infante Lira, Leopoldo; Troncoso Iribarren, P.; Zheng, W.; Molino, A.; Bauer, Franz Erik; Bina, D.; Broadhurst, Tom; Chilingarian, I.; Huang, X.; García, S.; Kim, S.; Marques Chaves, R.; Moustakas, J.; Pelló, R.; Pérez Fournon, I.; Shu, X.; Streblyanska, A.; Zitrin, A.