573 research outputs found

    De la responsabilidad civil de los terceros por su contribución al incumplimiento de los deberes conyugales

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    Asumiendo aquella postura que admite la responsabilidad civil de los cónyuges por los daños causados por incumplimiento de los deberes conyugales, este trabajo pretende estudiar las eventuales obligaciones que pueden asumir los terceros que con su conducta inducen o contribuyen al incumplimiento de los deberes de un cónyuge, causando daños junto a los cónyuges, analizando si es posible su responsabilidad civil, y en caso afirmativo, bajo qué requisitos, forma y presupuestosAssuming that posture that supports civil responsibility of the spouses for damages for breach of marital duties, this work aims to study the possible obligations that may take third parties by their conduct induce or contribute to the failure of the duties of a spouse, causing damage with spouses, analysing if possible civil liability, and if so, under what conditions, shape and budge

    An adaptive sampling sequential quadratic programming method for nonsmooth stochastic optimization with upper-C2\mathcal{C}^2 objective

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    We propose an optimization algorithm that incorporates adaptive sampling for stochastic nonsmooth nonconvex optimization problems with upper-C2\mathcal{C}^2 objective functions. Upper-C2\mathcal{C}^2 is a weakly concave property that exists naturally in many applications, particularly certain classes of solutions to parametric optimization problems, e.g., recourse of stochastic programming and projection into closed sets. Our algorithm is a stochastic sequential quadratic programming (SQP) method extended to nonsmooth problems with upperC2\mathcal{C}^2 objectives and is globally convergent in expectation with bounded algorithmic parameters. The capabilities of our algorithm are demonstrated by solving a joint production, pricing and shipment problem, as well as a realistic optimal power flow problem as used in current power grid industry practice.Comment: arXiv admin note: text overlap with arXiv:2204.0963

    De los efectos patrimoniales tras la ruptura de la unión de hecho en el ordenamiento jurídico chileno

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    Las uniones de hecho son una realidad social creciente en nuestro país, no obstante nuestro ordenamiento jurídico no ha efectuado un reconocimiento expreso a estas relaciones, constatando la existencia de diversas disposiciones que aisladamente le reconocen, de modo más o menos explícito, ciertos efectos jurídicos. Sin embargo, ninguno de dichos preceptos legales entrega un concepto de unión de hecho, ni de sus requisitos, ni permite configurar la existencia de un supuesto estado civil de conviviente. Ante tal vacío, ha sido la doctrina y principalmente la jurisprudencia quienes han venido a encargarse de delimitar el concepto y los requisitos de las uniones de hecho, así como de la regulación de los efectos patrimoniales de las mismas una vez que se produce el término del concubinato. Con todo, creemos que no resulta posible regular sus efectos patrimoniales mediante la aplicación de la compensación económica establecida en la Ley de Matrimonio Civil Chilena para el caso de divorcio o nulidad matrimonial.De facto unions are a growing social reality in our country, however our legal system has not made an express recognition to these relationships, confirming the existence of various provisions alone will recognize, more or less explicit, certain legal effects. However, none of these legal precepts delivers a concept union, or its requirements, or to configure the existence of an alleged status of partner. Given this vacuum, has been the doctrine and jurisprudence mainly those who have come to take charge of defining the concept and requirements of domestic partnerships as well as the regulation of the property consequences thereof occurs once the term of the concubinage. However, we believe that it is not possible to regulate its economic effects by applying the compensation established in the Chilean Civil Marriage Act in the case of divorce or annulment

    Imaging the molecular gas in a submm galaxy at z = 4.05: cold mode accretion or a major merger?

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    We present a high resolution (down to 0.18"), multi-transition imaging study of the molecular gas in the z = 4.05 submillimeter galaxy GN20. GN20 is one of the most luminous starburst galaxy known at z > 4, and is a member of a rich proto-cluster of galaxies at z = 4.05 in GOODS-North. We have observed the CO 1-0 and 2-1 emission with the VLA, the CO 6-5 emission with the PdBI Interferometer, and the 5-4 emission with CARMA. The H_2 mass derived from the CO 1-0 emission is 1.3 \times 10^{11} (\alpha/0.8) Mo. High resolution imaging of CO 2-1 shows emission distributed over a large area, appearing as partial ring, or disk, of ~ 10kpc diameter. The integrated CO excitation is higher than found in the inner disk of the Milky Way, but lower than that seen in high redshift quasar host galaxies and low redshift starburst nuclei. The VLA CO 2-1 image at 0.2" resolution shows resolved, clumpy structure, with a few brighter clumps with intrinsic sizes ~ 2 kpc. The velocity field determined from the CO 6-5 emission is consistent with a rotating disk with a rotation velocity of ~ 570 km s^{-1} (using an inclination angle of 45^o), from which we derive a dynamical mass of 3 \times 10^{11} \msun within about 4 kpc radius. The star formation distribution, as derived from imaging of the radio synchrotron and dust continuum, is on a similar scale as the molecular gas distribution. The molecular gas and star formation are offset by ~ 1" from the HST I-band emission, implying that the regions of most intense star formation are highly dust-obscured on a scale of ~ 10 kpc. The large spatial extent and ordered rotation of this object suggests that this is not a major merger, but rather a clumpy disk accreting gas rapidly in minor mergers or smoothly from the proto-intracluster medium. ABSTRACT TRUNCATEDComment: 33 pages, 8 figures, submitted to the ApJ, aas latex forma

    Quest for COSMOS Submillimeter Galaxy Counterparts using CARMA and VLA: Identifying Three High-redshift Starburst Galaxies

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    We report on interferometric observations at 1.3 mm at 2"-3" resolution using the Combined Array for Research in Millimeter-wave Astronomy. We identify multi-wavelength counterparts of three submillimeter galaxies (SMGs; F_(1mm) > 5.5 mJy) in the COSMOS field, initially detected with MAMBO and AzTEC bolometers at low, ~10"-30", resolution. All three sources—AzTEC/C1, Cosbo-3, and Cosbo-8—are identified to coincide with positions of 20 cm radio sources. Cosbo-3, however, is not associated with the most likely radio counterpart, closest to the MAMBO source position, but with that farther away from it. This illustrates the need for intermediate-resolution (~2") mm-observations to identify the correct counterparts of single-dish-detected SMGs. All of our three sources become prominent only at NIR wavelengths, and their mm-to-radio flux based redshifts suggest that they lie at redshifts z ≳ 2. As a proof of concept, we show that photometric redshifts can be well determined for SMGs, and we find photometric redshifts of 5.6 ± 1.2, 1.9^(+0.9)_(–0.5), and ~4 for AzTEC/C1, Cosbo-3, and Cosbo-8, respectively. Using these we infer that these galaxies have radio-based star formation rates of ≳ 1000 M_☉ yr^(–1) and IR luminosities of ~10^(13) L_☉ consistent with properties of high-redshift SMGs. In summary, our sources reflect a variety of SMG properties in terms of redshift and clustering, consistent with the framework that SMGs are progenitors of z ~ 2 and today's passive galaxies

    Modelling the Canes Venatici I dwarf spheroidal galaxy

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    The aim of this work is to find a progenitor for Canes Venatici I (CVn I), under the assumption that it is a dark matter free object that is undergoing tidal disruption. With a simple point mass integrator, we searched for an orbit for this galaxy using its current position, position angle, and radial velocity in the sky as constraints. The orbit that gives the best results has the pair of proper motions μα\mu_\alpha = -0.099 mas yr1^{-1} and μδ\mu_\delta = -0.147 mas yr1^{-1}, that is an apogalactic distance of 242.79 kpc and a perigalactic distance of 20.01 kpc. Using a dark matter free progenitor that undergoes tidal disruption, the best-fitting model matches the final mass, surface brightness, effective radius, and velocity dispersion of CVn I simultaneously. This model has an initial Plummer mass of 2.47 x 10710^7 M_\odot and a Plummer radius of 653 pc, producing a remnant after 10 Gyr with a final mass of 2.45 x 105^5 M_\odot, a central surface brightness of 26.9 mag arcsec2^{-2}, an effective radius of 545.7 pc, and a velocity dispersion with the value 7.58 km s1^{-1}. Furthermore, it is matching the position angle and ellipticity of the projected object in the sky.Comment: 11 pages, 14 figures, accepted by A&

    A Survey of Atomic Carbon [C I] in High-redshift Main-Sequence Galaxies

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    We present the first results of an ALMA survey of the lower fine structure line of atomic carbon [C I](^3P_1\,-\,^{3}P_0) in far infrared-selected galaxies on the main sequence at z1.2z\sim1.2 in the COSMOS field. We compare our sample with a comprehensive compilation of data available in the literature for local and high-redshift starbursting systems and quasars. We show that the [C I](3P1^3P_1\rightarrow3P0^3P_0) luminosity correlates on global scales with the infrared luminosity LIRL_{\rm IR} similarly to low-JJ CO transitions. We report a systematic variation of L'_{\rm [C\,I]^3P_1\,-\, ^3P_0}/LIRL_{\rm IR} as a function of the galaxy type, with the ratio being larger for main-sequence galaxies than for starbursts and sub-millimeter galaxies at fixed LIRL_{\rm IR}. The L'_{\rm [C\,I]^3P_1\,-\, ^3P_0}/LCO(21)L'_{\rm CO(2-1)} and M[CI]M_{\rm{[C I]}}/MdustM_{\rm dust} mass ratios are similar for main-sequence galaxies and for local and high-redshift starbursts within a 0.2 dex intrinsic scatter, suggesting that [C I] is a good tracer of molecular gas mass as CO and dust. We derive a fraction of f[CI]=M[CI]/MC313f_{\rm{[C\,I]}} = M_{\rm{[C\,I]}} / M_{\rm{C}}\sim3-13% of the total carbon mass in the atomic neutral phase. Moreover, we estimate the neutral atomic carbon abundance, the fundamental ingredient to calibrate [C I] as a gas tracer, by comparing L'_{\rm [C\,I]^3P_1\,-\, ^3P_0} and available gas masses from CO lines and dust emission. We find lower [C I] abundances in main-sequence galaxies than in starbursting systems and sub-millimeter galaxies, as a consequence of the canonical αCO\alpha_{\rm CO} and gas-to-dust conversion factors. This argues against the application to different galaxy populations of a universal standard [C I] abundance derived from highly biased samples.Comment: 14 pages + Appendix. Accepted for publication in ApJ. All the data tables in Appendix will be also released in electronic forma
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