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1,178 results on '"Carrasco D"'

27. Periodic solutions in a 2D-symmetric Hamiltonian system through reduction and averaging method.

Author

Uribe, M., Vidarte, J., and Carrasco, D.

Subjects
HAMILTONIAN systems, RESONANCE, ROTATIONAL motion, CHOREOGRAPHY, POLYNOMIALS
Abstract

We study a type of perturbed polynomial Hamiltonian system in 1:1 resonance. The perturbation consists of a homogeneous quartic potential invariant by rotations of $ \pi /2 $ π / 2 radians. The existence of periodic solutions is established using reduction and averaging theories. The different types of periodic solutions, linear stability, and bifurcation curves are characterized in terms of the parameters. Finally, some choreography of bifurcations are obtained, showing in detail the evolution of the phase flow. [ABSTRACT FROM AUTHOR]

Published
2024
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30. Galaxy candidates at z ~ 10 in archival data from the Brightest of Reionizing Galaxies (BoRG[z8]) survey

Author

Bernard, S. R., Carrasco, D., Trenti, M., Oesch, P. A., Wu, J. F., Bradley, L. D., Schmidt, K. B., Bouwens, R. J., Calvi, V., Mason, C. A., Stiavelli, M., and Treu, T.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

The Wide Field Camera 3 (WFC3) on the Hubble Space Telescope (HST) enabled the search for the first galaxies observed at z ~ 8 - 11 (500 - 700 Myr after the Big Bang). To continue quantifying the number density of the most luminous galaxies (M_AB ~ -22.0) at the earliest epoch observable with HST, we search for z ~ 10 galaxies (F125W-dropouts) in archival data from the Brightest of Reionizing Galaxies (BoRG[z8]) survey, originally designed for detection of z ~ 8 galaxies (F098M-dropouts). By focusing on the deepest 293 arcmin^2 of the data along 62 independent lines of sight, we identify six z ~ 10 candidates satisfying the color selection criteria, detected at S/N > 8 in F160W with M_AB = -22.8 to -21.1 if at z = 10. Three of the six sources, including the two brightest, are in a single WFC3 pointing (~ 4 arcmin^2), suggestive of significant clustering, which is expected from bright galaxies at z ~ 10. However, the two brightest galaxies are too extended to be likely at z ~ 10, and one additional source is unresolved and possibly a brown dwarf. The remaining three candidates have m_AB ~ 26, and given the area and completeness of our search, our best estimate is a number density of sources that is marginally higher but consistent at 2{\sigma} with searches in legacy fields. Our study highlights that z ~ 10 searches can yield a small number of candidates, making tailored follow-ups of HST pure-parallel observations viable and effective., Comment: Accepted by ApJ. 10 pages, 5 figures

Published
2016
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31. Bright galaxies at Hubble's redshift detection frontier: Preliminary results and design from the redshift z~9-10 BoRG pure-parallel HST survey

Author

Calvi, V., Trenti, M., Stiavelli, M., Oesch, P., Bradley, L. D., Schmidt, K. B., Coe, D., Brammer, G., Bernard, S., Bouwens, R. J., Carrasco, D., Carollo, C. M., Holwerda, B. W., MacKenty, J. W., Mason, C. A., Shull, J. M., and Treu, T.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We present the first results and design from the redshift z~9-10 Brightest of the Reionizing Galaxies {\it Hubble Space Telescope} survey BoRG[z9-10], aimed at searching for intrinsically luminous unlensed galaxies during the first 700 Myr after the Big Bang. BoRG[z9-10] is the continuation of a multi-year pure-parallel near-IR and optical imaging campaign with the Wide Field Camera 3. The ongoing survey uses five filters, optimized for detecting the most distant objects and offering continuous wavelength coverage from {\lambda}=0.35{\mu}m to {\lambda}=1.7{\mu}m. We analyze the initial ~130 arcmin$^2$ of area over 28 independent lines of sight (~25% of the total planned) to search for z>7 galaxies using a combination of Lyman break and photometric redshift selections. From an effective comoving volume of (5-25) $times 10^5$ Mpc$^3$ for magnitudes brighter than $m_{AB}=26.5-24.0$ in the $H_{160}$-band respectively, we find five galaxy candidates at z~8.3-10 detected at high confidence (S/N>8), including a source at z~8.4 with mAB=24.5 (S/N~22), which, if confirmed, would be the brightest galaxy identified at such early times (z>8). In addition, BoRG[z9-10] data yield four galaxies with $7.3 \lesssim z \lesssim 8$. These new Lyman break galaxies with m$\lesssim26.5$ are ideal targets for follow-up observations from ground and space based observatories to help investigate the complex interplay between dark matter growth, galaxy assembly, and reionization., Comment: Accepted for publication on ApJ. 21 pages, 11 figures, 4 tables

Published
2015
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36. Photometric Classification of quasars from RCS-2 using Random Forest

Author

Carrasco, D., Barrientos, L. F., Pichara, K., Anguita, T., Murphy, D. N. A., Gilbank, D. G., Gladders, M. D., Yee, H. K. C., Hsieh, B. C., and López, S.

Subjects
Astrophysics - Astrophysics of Galaxies, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Aims. Construction of a new quasar candidate catalog from the Red-Sequence Cluster Survey 2 (RCS-2), identified solely from photometric information using an automated algorithm suitable for large surveys. The algorithm performance is tested using a well-defined SDSS spectroscopic sample of quasars and stars. Methods. The Random Forest algorithm constructs the catalog from RCS-2 point sources using SDSS spectroscopically-confirmed stars and quasars. The algorithm identifies putative quasars from broadband magnitudes (g, r, i, z) and colours. Exploiting NUV GALEX measurements for a subset of the objects, we refine the classifier by adding new information. An additional subset of the data with WISE W1 and W2 bands is also studied. Results. Upon analyzing 542,897 RCS-2 point sources, the algorithm identified 21,501 quasar candidates, with a training-set-derived precision (the fraction of true positives within the group assigned quasar status) of 89.5% and recall (the fraction of true positives relative to all sources that actually are quasars) of 88.4%. These performance metrics improve for the GALEX subset; 6,530 quasar candidates are identified from 16,898 sources, with a precision and recall respectively of 97.0% and 97.5%. Algorithm performance is further improved when WISE data are included, with precision and recall increasing to 99.3% and 99.1% respectively for 21,834 quasar candidates from 242,902 sources. We compile our final catalog (38,257) by merging these samples and removing duplicates. An observational follow up of 17 bright (r < 19) candidates with long-slit spectroscopy at DuPont telescope (LCO) yields 14 confirmed quasars. Conclusions. The results signal encouraging progress in the classification of point sources with Random Forest algorithms to search for quasars within current and future large-area photometric surveys., Comment: Accepted for publication in A&A. 20 pages, 16 figures, 6 tables. Tables 1, 2 and 3 with the quasar candidates are only available in electronic format http://www.aanda.org/

Published
2014
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37. Expanded phenotypic spectrum of neurodevelopmental and neurodegenerative disorder Bryant-Li-Bhoj syndrome with 38 additional individuals

Author

Layo-Carris, DE, Lubin, EE, Sangree, AK, Clark, KJ, Durham, EL, Gonzalez, EM, Smith, S, Angireddy, R, Wang, XM, Weiss, E, Mendoza-Londono, R, Dupuis, L, Damseh, N, Velasco, D, Valenzuela, I, Codina-Sola, M, Ziats, C, Have, J, Clarkson, K, Steel, D, Kurian, M, Barwick, K, Carrasco, D, Dagli, AI, Nowaczyk, MJM, Hancarova, M, Bendova, S, Prchalova, D, Sedlacek, Z, Baxova, A, Nowak, CB, Douglas, J, Chung, WK, Longo, N, Platzer, K, Kloeckner, C, Averdunk, L, Wieczorek, D, Krey, I, Zweier, C, Reis, A, Balci, T, Simon, M, Kroes, HY, Wiesener, A, Vasileiou, G, Marinakis, NM, Veltra, D, Sofocleous, C, Kosma, K, Synodinos, JT, Voudris, KA, Vuillaume, M-L, Gueguen, P, Derive, N, Colin, E, Battault, C, Au, B, Delatycki, M, Wallis, M, Gallacher, L, Majdoub, F, Smal, N, Weckhuysen, S, Schoonjans, A-S, Kooy, RF, Meuwissen, M, Cocanougher, BT, Taylor, K, Pizoli, CE, McDonald, MT, James, P, Roeder, ER, Littlejohn, R, Borja, NA, Thorson, W, King, K, Stoeva, R, Suerink, M, Nibbeling, E, Baskin, S, Guyader, GLE, Kaplan, J, Muss, C, Carere, DA, Bhoj, EJK, Bryant, LM, Layo-Carris, DE, Lubin, EE, Sangree, AK, Clark, KJ, Durham, EL, Gonzalez, EM, Smith, S, Angireddy, R, Wang, XM, Weiss, E, Mendoza-Londono, R, Dupuis, L, Damseh, N, Velasco, D, Valenzuela, I, Codina-Sola, M, Ziats, C, Have, J, Clarkson, K, Steel, D, Kurian, M, Barwick, K, Carrasco, D, Dagli, AI, Nowaczyk, MJM, Hancarova, M, Bendova, S, Prchalova, D, Sedlacek, Z, Baxova, A, Nowak, CB, Douglas, J, Chung, WK, Longo, N, Platzer, K, Kloeckner, C, Averdunk, L, Wieczorek, D, Krey, I, Zweier, C, Reis, A, Balci, T, Simon, M, Kroes, HY, Wiesener, A, Vasileiou, G, Marinakis, NM, Veltra, D, Sofocleous, C, Kosma, K, Synodinos, JT, Voudris, KA, Vuillaume, M-L, Gueguen, P, Derive, N, Colin, E, Battault, C, Au, B, Delatycki, M, Wallis, M, Gallacher, L, Majdoub, F, Smal, N, Weckhuysen, S, Schoonjans, A-S, Kooy, RF, Meuwissen, M, Cocanougher, BT, Taylor, K, Pizoli, CE, McDonald, MT, James, P, Roeder, ER, Littlejohn, R, Borja, NA, Thorson, W, King, K, Stoeva, R, Suerink, M, Nibbeling, E, Baskin, S, Guyader, GLE, Kaplan, J, Muss, C, Carere, DA, Bhoj, EJK, and Bryant, LM

Abstract

Bryant-Li-Bhoj syndrome (BLBS), which became OMIM-classified in 2022 (OMIM: 619720, 619721), is caused by germline variants in the two genes that encode histone H3.3 (H3-3A/H3F3A and H3-3B/H3F3B) [1-4]. This syndrome is characterized by developmental delay/intellectual disability, craniofacial anomalies, hyper/hypotonia, and abnormal neuroimaging [1, 5]. BLBS was initially categorized as a progressive neurodegenerative syndrome caused by de novo heterozygous variants in either H3-3A or H3-3B [1-4]. Here, we analyze the data of the 58 previously published individuals along 38 unpublished, unrelated individuals. In this larger cohort of 96 people, we identify causative missense, synonymous, and stop-loss variants. We also expand upon the phenotypic characterization by elaborating on the neurodevelopmental component of BLBS. Notably, phenotypic heterogeneity was present even amongst individuals harboring the same variant. To explore the complex phenotypic variation in this expanded cohort, the relationships between syndromic phenotypes with three variables of interest were interrogated: sex, gene containing the causative variant, and variant location in the H3.3 protein. While specific genotype-phenotype correlations have not been conclusively delineated, the results presented here suggest that the location of the variants within the H3.3 protein and the affected gene (H3-3A or H3-3B) contribute more to the severity of distinct phenotypes than sex. Since these variables do not account for all BLBS phenotypic variability, these findings suggest that additional factors may play a role in modifying the phenotypes of affected individuals. Histones are poised at the interface of genetics and epigenetics, highlighting the potential role for gene-environment interactions and the importance of future research.

Published
2024

38. Correction: Expanded phenotypic spectrum of neurodevelopmental and neurodegenerative disorder Bryant-Li-Bhoj syndrome with 38 additional individuals (vol 3, 2024, 59)

Author

Layo-Carris, DE, Lubin, EE, Sangree, AK, Clark, KJ, Durham, EL, Gonzalez, EM, Smith, S, Angireddy, R, Wang, XM, Weiss, E, Toutain, A, Mendoza-Londono, R, Dupuis, L, Damseh, N, Velasco, D, Valenzuela, I, Codina-Sola, M, Ziats, C, Have, J, Clarkson, K, Steel, D, Kurian, M, Barwick, K, Carrasco, D, Dagli, AI, Nowaczyk, MJM, Hancarova, M, Bendova, S, Prchalova, D, Sedlacek, Z, Baxova, A, Nowak, CB, Douglas, J, Chung, WK, Longo, N, Platzer, K, Klockner, C, Averdunk, L, Wieczorek, D, Krey, I, Zweier, C, Reis, A, Balci, T, Simon, M, Kroes, HY, Wiesener, A, Vasileiou, G, Marinakis, NM, Veltra, D, Sofocleous, C, Kosma, K, Synodinos, JT, Voudris, KA, Vuillaume, M-L, Gueguen, P, Derive, N, Colin, E, Battault, C, Au, B, Delatycki, M, Wallis, M, Gallacher, L, Majdoub, F, Smal, N, Weckhuysen, S, Schoonjans, A-S, Kooy, RF, Meuwissen, M, Cocanougher, BT, Taylor, K, Pizoli, CE, Mcdonald, MT, James, P, Roeder, ER, Littlejohn, R, Borja, NA, Thorson, W, King, K, Stoeva, R, Suerink, M, Nibbeling, E, Baskin, S, Guyader, GLE, Kaplan, J, Muss, C, Carere, DA, Bhoj, EJK, Bryant, LM, Layo-Carris, DE, Lubin, EE, Sangree, AK, Clark, KJ, Durham, EL, Gonzalez, EM, Smith, S, Angireddy, R, Wang, XM, Weiss, E, Toutain, A, Mendoza-Londono, R, Dupuis, L, Damseh, N, Velasco, D, Valenzuela, I, Codina-Sola, M, Ziats, C, Have, J, Clarkson, K, Steel, D, Kurian, M, Barwick, K, Carrasco, D, Dagli, AI, Nowaczyk, MJM, Hancarova, M, Bendova, S, Prchalova, D, Sedlacek, Z, Baxova, A, Nowak, CB, Douglas, J, Chung, WK, Longo, N, Platzer, K, Klockner, C, Averdunk, L, Wieczorek, D, Krey, I, Zweier, C, Reis, A, Balci, T, Simon, M, Kroes, HY, Wiesener, A, Vasileiou, G, Marinakis, NM, Veltra, D, Sofocleous, C, Kosma, K, Synodinos, JT, Voudris, KA, Vuillaume, M-L, Gueguen, P, Derive, N, Colin, E, Battault, C, Au, B, Delatycki, M, Wallis, M, Gallacher, L, Majdoub, F, Smal, N, Weckhuysen, S, Schoonjans, A-S, Kooy, RF, Meuwissen, M, Cocanougher, BT, Taylor, K, Pizoli, CE, Mcdonald, MT, James, P, Roeder, ER, Littlejohn, R, Borja, NA, Thorson, W, King, K, Stoeva, R, Suerink, M, Nibbeling, E, Baskin, S, Guyader, GLE, Kaplan, J, Muss, C, Carere, DA, Bhoj, EJK, and Bryant, LM

Published
2024

41. Dual domestications and origin of traits in grapevine evolution

Author

Dong, Y, Duan, S, Xia, Q, Liang, Z, Dong, X, Margaryan, K, Musayev, M, Goryslavets, S, Zdunić, G, Bert, P, Lacombe, T, Maul, E, Nick, P, Bitskinashvili, K, Bisztray, G, Drori, E, De Lorenzis, G, Cunha, J, Popescu, C, Arroyo-Garcia, R, Arnold, C, Ergül, A, Zhu, Y, Ma, C, Wang, S, Liu, S, Tang, L, Wang, C, Li, D, Pan, Y, Li, J, Yang, L, Li, X, Xiang, G, Yang, Z, Chen, B, Dai, Z, Wang, Y, Arakelyan, A, Kuliyev, V, Spotar, G, Girollet, N, Delrot, S, Ollat, N, This, P, Marchal, C, Sarah, G, Laucou, V, Bacilieri, R, Röckel, F, Guan, P, Jung, A, Riemann, M, Ujmajuridze, L, Zakalashvili, T, Maghradze, D, Höhn, M, Jahnke, G, Kiss, E, Deák, T, Rahimi, O, Hübner, S, Grassi, F, Mercati, F, Sunseri, F, Eiras-Dias, J, Dumitru, A, Carrasco, D, Rodriguez-Izquierdo, A, Muñoz, G, Uysal, T, Özer, C, Kazan, K, Xu, M, Zhu, S, Lu, J, Zhao, M, Wang, L, Jiu, S, Zhang, Y, Sun, L, Yang, H, Weiss, E, Li, S, Sheng, J, Chen, W, Dong Y., Duan S., Xia Q., Liang Z., Dong X., Margaryan K., Musayev M., Goryslavets S., Zdunić G., Bert P. F., Lacombe T., Maul E., Nick P., Bitskinashvili K., Bisztray G. D., Drori E., De Lorenzis G., Cunha J., Popescu C. F., Arroyo-Garcia R., Arnold C., Ergül A., Zhu Y., Ma C., Wang S., Liu S., Tang L., Wang C., Li D., Pan Y., Li J., Yang L., Li X., Xiang G., Yang Z., Chen B., Dai Z., Wang Y., Arakelyan A., Kuliyev V., Spotar G., Girollet N., Delrot S., Ollat N., This P., Marchal C., Sarah G., Laucou V., Bacilieri R., Röckel F., Guan P., Jung A., Riemann M., Ujmajuridze L., Zakalashvili T., Maghradze D., Höhn M., Jahnke G., Kiss E., Deák T., Rahimi O., Hübner S., Grassi F., Mercati F., Sunseri F., Eiras-Dias J., Dumitru A. M., Carrasco D., Rodriguez-Izquierdo A., Muñoz G., Uysal T., Özer C., Kazan K., Xu M., Zhu S., Lu J., Zhao M., Wang L., Jiu S., Zhang Y., Sun L., Yang H., Weiss E., Li S., Sheng J., Chen W., Dong, Y, Duan, S, Xia, Q, Liang, Z, Dong, X, Margaryan, K, Musayev, M, Goryslavets, S, Zdunić, G, Bert, P, Lacombe, T, Maul, E, Nick, P, Bitskinashvili, K, Bisztray, G, Drori, E, De Lorenzis, G, Cunha, J, Popescu, C, Arroyo-Garcia, R, Arnold, C, Ergül, A, Zhu, Y, Ma, C, Wang, S, Liu, S, Tang, L, Wang, C, Li, D, Pan, Y, Li, J, Yang, L, Li, X, Xiang, G, Yang, Z, Chen, B, Dai, Z, Wang, Y, Arakelyan, A, Kuliyev, V, Spotar, G, Girollet, N, Delrot, S, Ollat, N, This, P, Marchal, C, Sarah, G, Laucou, V, Bacilieri, R, Röckel, F, Guan, P, Jung, A, Riemann, M, Ujmajuridze, L, Zakalashvili, T, Maghradze, D, Höhn, M, Jahnke, G, Kiss, E, Deák, T, Rahimi, O, Hübner, S, Grassi, F, Mercati, F, Sunseri, F, Eiras-Dias, J, Dumitru, A, Carrasco, D, Rodriguez-Izquierdo, A, Muñoz, G, Uysal, T, Özer, C, Kazan, K, Xu, M, Zhu, S, Lu, J, Zhao, M, Wang, L, Jiu, S, Zhang, Y, Sun, L, Yang, H, Weiss, E, Li, S, Sheng, J, Chen, W, Dong Y., Duan S., Xia Q., Liang Z., Dong X., Margaryan K., Musayev M., Goryslavets S., Zdunić G., Bert P. F., Lacombe T., Maul E., Nick P., Bitskinashvili K., Bisztray G. D., Drori E., De Lorenzis G., Cunha J., Popescu C. F., Arroyo-Garcia R., Arnold C., Ergül A., Zhu Y., Ma C., Wang S., Liu S., Tang L., Wang C., Li D., Pan Y., Li J., Yang L., Li X., Xiang G., Yang Z., Chen B., Dai Z., Wang Y., Arakelyan A., Kuliyev V., Spotar G., Girollet N., Delrot S., Ollat N., This P., Marchal C., Sarah G., Laucou V., Bacilieri R., Röckel F., Guan P., Jung A., Riemann M., Ujmajuridze L., Zakalashvili T., Maghradze D., Höhn M., Jahnke G., Kiss E., Deák T., Rahimi O., Hübner S., Grassi F., Mercati F., Sunseri F., Eiras-Dias J., Dumitru A. M., Carrasco D., Rodriguez-Izquierdo A., Muñoz G., Uysal T., Özer C., Kazan K., Xu M., Zhu S., Lu J., Zhao M., Wang L., Jiu S., Zhang Y., Sun L., Yang H., Weiss E., Li S., Sheng J., and Chen W.

Abstract

We elucidate grapevine evolution and domestication histories with 3525 cultivated and wild accessions worldwide. In the Pleistocene, harsh climate drove the separation of wild grape ecotypes caused by continuous habitat fragmentation. Then, domestication occurred concurrently about 11,000 years ago in Western Asia and the Caucasus to yield table and wine grapevines. The Western Asia domesticates dispersed into Europe with early farmers, introgressed with ancient wild western ecotypes, and subsequently diversified along human migration trails into muscat and unique western wine grape ancestries by the late Neolithic. Analyses of domestication traits also reveal new insights into selection for berry palatability, hermaphroditism, muscat flavor, and berry skin color. These data demonstrate the role of the grapevines in the early inception of agriculture across Eurasia.

Published
2023

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