Homomorphisms on Lipschitz Spaces

González, Jorge Bustamante; Ramírez, José R. Arrazola

doi:10.1007/s006050050003

Cited by 8 publications

(10 citation statements)

References 2 publications

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“…Here we explore theoretical models which have been used to explain the emission of thermal radio jets from low-mass YSOs. We use the models developed by Curiel et al (1987), González & Cantó (2002) and Rodríguez et al (2012) in order to explain the observed radio-continuum emission (with thermal origin) from the sources of our sample. Curiel et al (1987) calculated for the first time the radio-continuum emission (of thermal origin) produced by a plane-parallel shock wave.…”

Section: Models Of Emissionmentioning

confidence: 99%

“…Curiel et al (1987) calculated for the first time the radio-continuum emission (of thermal origin) produced by a plane-parallel shock wave. González & Cantó (2002) and Rodríguez et al (2012) modeled the observed radio emission in low-mass stars as internal shocks, which are produced by intrinsic variability in the injection velocity, in a spherical wind and a bipolar outflow (with conical symmetry), respectively. We follow the approach of these authors to explore three possible geometries for the thermal emission detected in our sample of proto-BD candidates, since our observations are not able to fully resolve the geometry of the emitting region or to measure the degree of collimation of the thermal radio jets.…”

Section: Models Of Emissionmentioning

confidence: 99%

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First Detection of Thermal Radiojets in a Sample of Proto-Brown Dwarf Candidates

Morata

Palau

González

et al. 2015

ApJ

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We observed with the Jansky Very Large Array at 3.6 and 1.3 cm a sample of 11 proto-brown dwarf candidates in Taurus in a search for thermal radio jets driven by the most embedded brown dwarfs. We detected for the first time four thermal radio jets in proto-brown dwarf candidates. We compiled data from UKIDSS, 2MASS, Spitzer, WISE and Herschel to build the spectral energy distribution (SED) of the objects in our sample, which are similar to typical Class I SEDs of young stellar objects (YSOs). The four proto-brown dwarf candidates driving thermal radio jets also roughly follow the well-known trend of centimeter luminosity against bolometric luminosity determined for YSOs, assuming they belong to Taurus, although they present some excess of radio emission compared to the known relation for YSOs. Nonetheless, we are able to reproduce the flux densities of the radio jets modeling the centimeter emission of the thermal radio jets using the same type of models applied to YSOs, but with corresponding smaller stellar wind velocities and mass-loss rates, and exploring different possible geometries of the wind or outflow from the star. Moreover, we also find that the modeled mass outflow rates for the bolometric luminosities of our objects agree reasonably well with the trends found between the mass outflow rates and bolometric luminosities of YSOs, which indicates that, despite the "excess" centimeter emission, the intrinsic properties of proto-brown dwarfs are consistent with a continuation of those of very low mass stars to a lower mass range. Overall, our study favors the formation of brown dwarfs as a scaled-down version of low-mass stars.

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Section: Models Of Emissionmentioning

confidence: 99%

Section: Models Of Emissionmentioning

confidence: 99%

First Detection of Thermal Radiojets in a Sample of Proto-Brown Dwarf Candidates

Morata

Palau

González

et al. 2015

ApJ

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“…However if we try to construct a 1-loop diagram connecting the vertices of maximum and minimum contours through their respective arctic and antarctic multiplets, the propagator will have a divergent geometric series. A prescription to compute this apparently ill-defined expression will be presented in a future publication [6]. The alternative is to use the generic form of the propagator (62) where the geometric series has not been replaced by the convergent limit.…”

Section: Diagram Construction Rulesmentioning

confidence: 99%

“…For simplicity, we restrict our analysis to the massless hypermultiplet, and leave the discussion of massive hypermultiplet [5], couplings to the Yang-Mills multiplet [6] and quantization of N = 2 gauge multiplets [7] for the future. We prove the known non-renormalization theorems for the hypermultiplet.…”

Section: Introductionmentioning

confidence: 99%

Feynman rules in N = 2 projective superspace (I). Massless hypermultiplets

et al. 1998

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Manifestly N = 2 supersymmetric Feynman rules are found for different off-shell realizations of the massless hypermultiplet in projective superspace. When we reduce the Feynman rules to an N = 1 superspace we obtain the correct component propagators. The Feynman rules are shown to be compatible with a "duality" that acts only on the auxiliary fields, as well as with the usual duality relating the hypermultiplet to the tensor multiplet. 1

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“…These approaches are based on the estimation of thermodynamic properties of analytes, typically from a series of isothermal experiments. One of the advantages of this general approach over the retention index is that with well-measured thermodynamic parameters, very accurate predictions of retention time can be made over a wide range of temperatures and temperature-programing conditions [22][23][24][25][26]. One of the challenges in using thermodynamic parameters for predictions is the limited library of thermodynamic parameters for a range of compounds on a range of stationary phases.…”

Section: Introductionmentioning

confidence: 99%

Considerations for the automated collection of thermodynamic data in gas chromatography

McGinitie¹,

Harynuk

2012

J of Separation Science

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Thermodynamic modeling of retention times in gas chromatography depends on the accurate estimation of thermodynamic parameters. Previous research has used manual injections of samples with coinjection of a dead time marker to obtain accurate measurements of the retention factor of analytes. Ideally this process would be automated. Herein an approach is presented by which thermodynamic parameters can be estimated both autonomously and accurately. This method also allows for a consistent estimation of thermodynamic parameters regardless of factors such as data system delays and the nature of the void time marker employed. Ignoring these factors can lead to significant errors in the prediction of retention times when using thermodynamic models.

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Homomorphisms on Lipschitz Spaces

Cited by 8 publications

References 2 publications

First Detection of Thermal Radiojets in a Sample of Proto-Brown Dwarf Candidates

First Detection of Thermal Radiojets in a Sample of Proto-Brown Dwarf Candidates

Feynman rules in N = 2 projective superspace (I). Massless hypermultiplets

Considerations for the automated collection of thermodynamic data in gas chromatography

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