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While the ellects of the sweeping i44 resonance are analogous to the 14. only affecting inclinations instead of eccentricities. a [ull analvsis of the asteroid belt inclinations is bevond the scope of the present work. but will be explored in a future study.
|
While the effects of the sweeping $\nu_{16}$ resonance are analogous to the $\nu_6$, only affecting inclinations instead of eccentricities, a full analysis of the asteroid belt inclinations is beyond the scope of the present work, but will be explored in a future study.
|
A number of other studies have derived limits on the speed of planetesimal-driven giant planet migration.
|
A number of other studies have derived limits on the speed of planetesimal-driven giant planet migration.
|
Murrav-Clay&Chiang(2005) exclude an e—[olding migration timescale TXl]Mv to 99.65% confidence based on the lack of a large observed. asvimetry in the population of Nuiper belt objects in the two libration centers of the 2:1 Neptune mean motion resonance.
|
\cite{MurrayClay:2005p209} exclude an $e-$ folding migration timescale $\tau\leq 1\My$ to $99.65\%$ confidence based on the lack of a large observed asymmetry in the population of Kuiper belt objects in the two libration centers of the 2:1 Neptune mean motion resonance.
|
Ποιόοἱal.(2009). exclude 7<My based on the observed obliquity of saturn.
|
\cite{Boue:2009p1626} exclude $\tau\leq 7\My$ based on the observed obliquity of Saturn.
|
The latter lower limit on (he migration timescale is slightly incompatible with the lower limit on the rate of Saturn's migration of ds>0.15AUMy+ we derive based on the existence of the inner asteroid belt.
|
The latter lower limit on the migration timescale is slightly incompatible with the lower limit on the rate of Saturn's migration of $\dot{a}_6>0.15\AU\My^{-1}$ we derive based on the existence of the inner asteroid belt.
|
One way these can be reconciled is if Saturns orbital eccentricity were a factor 2 smaller than its present value as it migrated from 8.5 AU to 9.2 AU: then. some mechanism would need to have increased Saturn's eccentricity up to its present value bv the time Saturn reached its present semimajor axis of ~9.6AU.
|
One way these can be reconciled is if Saturn's orbital eccentricity were a factor $\sim2$ smaller than its present value as it migrated from 8.5 AU to 9.2 AU; then, some mechanism would need to have increased Saturn's eccentricity up to its present value by the time Saturn reached its present semimajor axis of $\sim9.6\AU$.
|
The authors would like to thank the anonymous reviewer and (he editor Eric Feigelson for useful comments.
|
The authors would like to thank the anonymous reviewer and the editor Eric Feigelson for useful comments.
|
This research was supported in part bv NSF grant no.
|
This research was supported in part by NSF grant no.
|
AST-0806828 and NASA:NESSF grant no.
|
AST-0806828 and NASA:NESSF grant no.
|
NNNOSAW?25II. The work of David Minton was additionally partially supported by NASA NLSI/CLOE research grant no.
|
NNX08AW25H. The work of David Minton was additionally partially supported by NASA NLSI/CLOE research grant no.
|
NNAO9DD32AÀ The binned eccentricity distribution max be modeled as a Gaussian probability distribution function. given bv: where σ is the standard deviation. fois (he mean. and is the random variable: in our case vis the eccentricity.
|
NNA09DB32A The binned eccentricity distribution may be modeled as a Gaussian probability distribution function, given by: where $\sigma$ is the standard deviation, $\mu$ is the mean, and $x$ is the random variable; in our case $x$ is the eccentricity.
|
With an appropriate scaling factor. equation (AL)) can be used to model the number of asteroids per eccentricity bin.
|
With an appropriate scaling factor, equation \ref{e:gaussian}) ) can be used to model the number of asteroids per eccentricity bin.
|
However. rather than fit the binned distribution. we instead. perform a least squares fit of the unbinned sample to the Gaussian cumulative distribution function given bv:
|
However, rather than fit the binned distribution, we instead perform a least squares fit of the unbinned sample to the Gaussian cumulative distribution function given by:
|
1998b).
|
.
|
Moreover. the frequency separation in the Atoll source 11636-536 seems not to (e consistent with the half of the frequency of the QPO in type L bursts (Méndez&vanParadijs.1998)..
|
Moreover, the frequency separation in the Atoll source 1636-536 seems not to be consistent with the half of the frequency of the QPO in type I bursts \cite{Mendez98c}.
|
-- Though he beat-frequeney. models are the most hopeful in explaining the QDPO-phenomenology it has to be awaited row the variation of the frequency separation and deviation rom the QPO frequency in bursts can be incorporated. to hese mocdels.
|
Though the beat-frequency models are the most hopeful candidates in explaining the QPO-phenomenology it has to be awaited how the variation of the frequency separation and deviation from the QPO frequency in bursts can be incorporated to these models.
|
One of us (Ch.
|
One of us (Ch.
|
5$.) gratefully acknowledges the Bavarian State for financial support.
|
S.) gratefully acknowledges the Bavarian State for financial support.
|
We would like to thank Norman CGlendenning and Jürrgen Schalfner-Bielich for providing us tables of their EOSs.
|
We would like to thank Norman Glendenning and Jürrgen Schaffner-Bielich for providing us tables of their EOSs.
|
Mukherjee luminosity function.
|
Mukherjee luminosity function.
|
The integrated fluxes of each blazar for Fo>1 GeV and E-10 GeV were used to eenerale observed fluxes using Poisson distributions equivalent to (wo full vears of exposure.
|
The integrated fluxes of each blazar for $E>1$ GeV and $E>10$ GeV were used to generate observed fluxes using Poisson distributions equivalent to two full years of exposure.
|
For each blazar. we caleulated the ratio between these fluxes.
|
For each blazar, we calculated the ratio between these fluxes.
|
The error in each flux ratio Was"us sesel dO Dpatiomu=FUETI1GeV]OppLOσον]2|(ολο.FUEπαTDITrees.ο). where oy is the statistical error of the flix measurement in each energv range.
|
The error in each flux ratio was set to $\sigma_{ratio}=\frac{1}{F(E\,>\,1\,\rm~GeV)}\sqrt{{\sigma_{F(E\,>\,10\,\rm~GeV)}}^{2}+(\frac{F(E\,>\,10\,\rm~GeV)}{F(E\,>\,1\,\rm~GeV)}\sigma_{F(E\,>\,1\,\rm~GeV)})^{2}}$, where $\sigma_{F}$ is the statistical error of the flux measurement in each energy range.
|
The crosses in Figure 2 show the weighted mean ratio in each recdshilt bin.
|
The crosses in Figure \ref{fig2} show the weighted mean ratio in each redshift bin.
|
To avoid the bias of small number Poisson statistics toward lower values. the flix ratio of each source was weighted by Cie Poisson error of the E>1 GeV flux. rather than the formal. propagated error of the fIux ratio.
|
To avoid the bias of small number Poisson statistics toward lower values, the flux ratio of each source was weighted by the Poisson error of the $E>1$ GeV flux, rather than the formal, propagated error of the flux ratio.
|
The diamonds show the same ratio when the intergalactic absorption is removed [rom the observed blazar [Iuxes.
|
The diamonds show the same ratio when the intergalactic absorption is removed from the observed blazar fluxes.
|
In all cases the error bars are statistical. obtained by computing the rms scatter within each redshift bin and dividing by VN.
|
In all cases the error bars are statistical, obtained by computing the rms scatter within each redshift bin and dividing by $\sqrt{N}$.
|
The analvticallvy derived flux ratio using (he opacity model of Salamon Stecker is plotted as a solid curve.
|
The analytically derived flux ratio using the opacity model of Salamon Stecker is plotted as a solid curve.
|
For comparison. the dashed lines in Figure 2. show the same results with no intergalactic absorption.
|
For comparison, the dashed lines in Figure \ref{fig2} show the same results with no intergalactic absorption.
|
We repeated (he entire analvsis with the blazar spectra changed from single power laws with mean index -2.15 to broken power laws with mean index -2.15 below 50 GeV (at the source) and -3.15 above.
|
We repeated the entire analysis with the blazar spectra changed from single power laws with mean index -2.15 to broken power laws with mean index -2.15 below 50 GeV (at the source) and -3.15 above.
|
The results are plotted as crosses in Figure 4.
|
The results are plotted as crosses in Figure \ref{fig3}.
|
Although fewer blazars have detected [ας above 10 GeV. the effects of absorption are still apparent.
|
Although fewer blazars have detected flux above 10 GeV, the effects of absorption are still apparent.
|
Note that sources wilh no detectable flux above 10 GeV (zero photons) still provide important information: indeed. neglecting them introduces a bias.
|
Note that sources with no detectable flux above 10 GeV (zero photons) still provide important information; indeed, neglecting them introduces a bias.
|
The modified 47 statistic used here (Mighell 1999) accounts for these sources.
|
The modified $\chi^{2}$ statistic used here (Mighell 1999) accounts for these sources.
|
The ratio obtained without EBL absorption is presented as diamonds. along with the analytically derived. {lux ratio (dashed line).
|
The ratio obtained without EBL absorption is presented as diamonds, along with the analytically derived flux ratio (dashed line).
|
As can be easily seen. this flux ratio is nol constant as a [unction of redshift.
|
As can be easily seen, this flux ratio is not constant as a function of redshift.
|
This is a consequence of defining the break in the index for a given energv at the source.
|
This is a consequence of defining the break in the index for a given energy at the source.
|
Primack and collaborators combined. theoretical modeling with observational data to develop semi-analvtic models of galaxy. formation aud evolution (Primack et al.
|
Primack and collaborators combined theoretical modeling with observational data to develop semi-analytic models of galaxy formation and evolution (Primack et al.
|
1999).
|
1999).
|
Their
|
Their
|
We have performed a survey of the most massive galaxies present at z>3, over an area of 0.6 deg? of the UKIDSS UDS field.
|
We have performed a survey of the most massive galaxies present at $z \geq 3$, over an area of 0.6 $^2$ of the UKIDSS UDS field.
|
To have the best possible proxy for a stellar mass complete sample, we made our selection in the Spitzer/IRAC band, which maps rest-frame near-IR wavelengths at these high redshifts.
|
To have the best possible proxy for a stellar mass complete sample, we made our selection in the /IRAC band, which maps rest-frame near-IR wavelengths at these high redshifts.
|
We followed up our master 4.5mcatalogue of 50,321 sources in 10 broad bands, from the U-band through the IRAC 3.6 um channel.
|
We followed up our master catalogue of 50,321 sources in 10 broad bands, from the $U$ -band through the IRAC 3.6 $\rm \mu m$ channel.
|
The multi-wavelength follow up has allowed us to model the SEDs of all our galaxies and, with this, obtain redshift estimates and derive stellar masses.
|
The multi-wavelength follow up has allowed us to model the SEDs of all our galaxies and, with this, obtain redshift estimates and derive stellar masses.
|
Our final sample consists of 1292 galaxies at redshifts 3.0<z«5.23.
|
Our final sample consists of 1292 galaxies at redshifts $3.0\leq z < 5.23$.
|
'The main goal of our work was the study of the galaxy stellar mass function at 3.0€z«5.0, particularly the evolution of its high-mass end within this redshift range.
|
The main goal of our work was the study of the galaxy stellar mass function at $3.0 \leq z<5.0$, particularly the evolution of its high-mass end within this redshift range.
|
Our deep and homogeneous datasets over a large field are particularly suitable for this purpose.
|
Our deep and homogeneous datasets over a large field are particularly suitable for this purpose.
|
We have found the following: Another key result of our work is the absence of massive galaxies at redshifts z> 5.
|
We have found the following: Another key result of our work is the absence of massive galaxies at redshifts $z>5$ .
|
Within our surveyed area of 0.6 deg?, we find only two quite secure candidates at such high redshifts, and only one with stellar mass M>10!
|
Within our surveyed area of 0.6 $^2$, we find only two quite secure candidates at such high redshifts, and only one with stellar mass $M>10^{11} \, \rm M_\odot$.
|
Instead, optical surveys have discovered a substantial Mo.number of intermediate stellar-mass sources at these redshifts.
|
Instead, optical surveys have discovered a substantial number of intermediate stellar-mass sources at these redshifts.
|
These findings strongly suggest that massive galaxies as a significant population only appear at later times, and that the epoch around redshifts z~3—6 is critical to understand the formation of the first massive Systems.
|
These findings strongly suggest that massive galaxies as a significant population only appear at later times, and that the epoch around redshifts $z\sim3-6$ is critical to understand the formation of the first massive systems.
|
In addition, we have found that a significant fraction of the most massive galaxies present at 3€z«4 would be missed by optical surveys, even asdeep as R«27 or
|
In addition, we have found that a significant fraction of the most massive galaxies present at $3\leq z<4$ would be missed by optical surveys, even asdeep as $R<27$ or
|
Postage stamps images in the four bands are shown for one of the 142 fLSB candidates with photo-z<0.2 in Fig.
|
Postage stamps images in the four bands are shown for one of the 142 fLSB candidates with $-z<0.2$ in Fig.
|
ΑΙ (galaxy #1128 in Table A3)).
|
\ref{fig:post} (galaxy 128 in Table \ref{tab:liste3}) ).
|
The corresponding surface brightness profile is given in Fig. A2..
|
The corresponding surface brightness profile is given in Fig. \ref{fig:prof}.
|
Based on the large spectroscopic and photometric catalogues aequired for Abell 496 (Boué et al.
|
Based on the large spectroscopic and photometric catalogues acquired for Abell 496 (Boué et al.
|
2008). we have estimated the spectral type of each galaxy with the Le Phare photometric redshift software.
|
2008), we have estimated the spectral type of each galaxy with the Le Phare photometric redshift software.
|
Galaxies are then assigned a spectral type: type | for ellipticals. type 2 for early type spirals. type 3 for intermediate type spirals and type 4 for late type spirals.
|
Galaxies are then assigned a spectral type: type 1 for ellipticals, type 2 for early type spirals, type 3 for intermediate type spirals and type 4 for late type spirals.
|
In order to search for substructures. we applied the Serna Gerbal (1996) software to galaxies with measured spectroscopic redshifts and magnitudes.
|
In order to search for substructures, we applied the Serna Gerbal (1996) software to galaxies with measured spectroscopic redshifts and magnitudes.
|
This hierarchical method allows to extract galaxy substructures or groups from a catalogue containing positions. magnitudes and redshifts. based on the calculation of their relative (negative) binding energies.
|
This hierarchical method allows to extract galaxy substructures or groups from a catalogue containing positions, magnitudes and redshifts, based on the calculation of their relative (negative) binding energies.
|
The method gives as output a list of galaxies belonging to each group. as well as the information on the binding energy of the group itself. and on the mass of each substructure. assuming a mass to luminosity ratio (M/L).
|
The method gives as output a list of galaxies belonging to each group, as well as the information on the binding energy of the group itself, and on the mass of each substructure, assuming a mass to luminosity ratio (M/L).
|
We used herea M/L ratio in the 7 band of 200. as previously assumed for the Coma cluster by Adami et al. (
|
We used herea M/L ratio in the $r'$ band of 200, as previously assumed for the Coma cluster by Adami et al. (
|
2005). based on the Coma cluster M/L ratio given by Lokas Mamon (2003).
|
2005), based on the Coma cluster M/L ratio given by okas Mamon (2003).
|
The Serna Gerbal analysis shows the existence of three substructures (also see Section 4).
|
The Serna Gerbal analysis shows the existence of three substructures (also see Section 4).
|
These all have low masses (smaller than a few 10 M..) and therefore their existence does not contradict the overall relaxed structure of the cluster.
|
These all have low masses (smaller than a few $10^{12}$ $_\odot$ ) and therefore their existence does not contradict the overall relaxed structure of the cluster.
|
If we analyze the morphological type distribution of the galaxies belonging to these three substructures (also see Fig. 5)).
|
If we analyze the morphological type distribution of the galaxies belonging to these three substructures (also see Fig. \ref{fig:type}) ),
|
we find that only one galaxy is of type 4 (late type spiral). corresponding to ~1% of all the galaxies in substructures.
|
we find that only one galaxy is of type 4 (late type spiral), corresponding to $\sim$ of all the galaxies in substructures.
|
If we estimate the percentage of type + galaxies in the cluster (1.5. 1n the [0.0229.0.0429] redshift range) that are not included in substructures. we find a value of 23%..
|
If we estimate the percentage of type 4 galaxies in the cluster (i.e. in the [0.0229,0.0429] redshift range) that are not included in substructures, we find a value of .
|
The difference between these two values could be
|
The difference between these two values could be
|
equilibrium points are also made linearly stable by continuous corrections of their halo rq}).
|
equilibrium points are also made linearly stable by continuous corrections of their halo ).
|
In other words the collinear equilibrium points are metastable points in (he sense (hat. like a ball sitting on top of a hill.
|
In other words the collinear equilibrium points are metastable points in the sense that, like a ball sitting on top of a hill.
|
However. in practice these Lagrange points have proven to be very useful indeed since à spacecralt can be made {ο execute a small orbit about one of these Lagrange points with a very small expenditure of energy[please see 1969)]].
|
However, in practice these Lagrange points have proven to be very useful indeed since a spacecraft can be made to execute a small orbit about one of these Lagrange points with a very small expenditure of energy[please see \citet{Farquhar1967JSpRo,Farquhar1969AsAer}] ].
|
We considered ihe Chermuvkh’s problem which is a new kind of restricted (hree body problem. il was first Gime studied by Chermauvkh(1987).
|
We considered the Chermnykh's problem which is a new kind of restricted three body problem, it was first time studied by \citet{Chermnykh1987}.
|
. This problem generalizes two Classical problems of Celestial mvechanics: (he two fixed center problem and the restricted three body problem.
|
This problem generalizes two classical problems of Celestial mechanics: the two fixed center problem and the restricted three body problem.
|
This gives wide perspectives for applications of the problem in celestial mechanics and astronomy.
|
This gives wide perspectives for applications of the problem in celestial mechanics and astronomy.
|
The importance of (he problem in astronomy has been addressed bv JiangandYeh(2004a)..
|
The importance of the problem in astronomy has been addressed by \citet{Jiang2004IJBC}.
|
Some planetary systems are claimed (ο have discs of dust and thev are regarded (to be young analogues of the Ixuiper Bell in our Solar System.
|
Some planetary systems are claimed to have discs of dust and they are regarded to be young analogues of the Kuiper Belt in our Solar System.
|
If these disces are massive enough. thev should play important roles in the origin of orbital elements.
|
If these discs are massive enough, they should play important roles in the origin of orbital elements.
|
Since (he belt of planetesimal often exists within a planetary svstem and provides (he possible mechanism of orbital circularization. it is important to understand the solutions of dynamical svstems with the planet-belt interaction.
|
Since the belt of planetesimal often exists within a planetary system and provides the possible mechanism of orbital circularization, it is important to understand the solutions of dynamical systems with the planet-belt interaction.
|
The Chermnykhs problem has been studied bv many scientists such as JiangandYeh(2004b).. Papaclakis(2004)..Papacdakis (2005) and JiangaudYeh(2006):and(2006)..
|
The Chermnykh's problem has been studied by many scientists such as \citet{JiangYeh2004AJ}, \citet{Papadakis2004A&A}, \citet{Papadakis2005Ap&SS299} and \citet{JiangYeh2006Ap&SSI,YehJiang2006Ap&SSII}.
|
The present paper investigates the nature of collinear equilibrium point Lo because of the interested point to locate an artificial satellite.
|
The present paper investigates the nature of collinear equilibrium point $L_2$ because of the interested point to locate an artificial satellite.
|
Although there are (vo new equilibrium points due to mass of the belt(larger than 0.15) as obtained by. (200G).. but they are left to be examined.
|
Although there are two new equilibrium points due to mass of the belt(larger than 0.15) as obtained by \citet{JiangYeh2006Ap&SSI,YehJiang2006Ap&SSII}, but they are left to be examined.
|
All the results are computed numerically using same technique as in GrebennikovandIxozak-Skoworodkin(2007).. because pure analvtical nuethods are not suitable.
|
All the results are computed numerically using same technique as in \cite{Grebennikov2007CMMPh}, because pure analytical methods are not suitable.
|
For specific time intervals. and initial values. (ese results provide jew information on the behavior of trajectories around (he Lagrangian point Le.
|
For specific time intervals, and initial values, these results provide new information on the behavior of trajectories around the Lagrangian point $L_2$.
|
It is supposed that the motion of an infinitesimal mass particle is influenced. by the eravitational force from primaries aud a belt of mass M.
|
It is supposed that the motion of an infinitesimal mass particle is influenced by the gravitational force from primaries and a belt of mass $M_b$.
|
The units of the mass and the distance are taken such that sum of (he masses ancl (he distance between primaries are unities.
|
The units of the mass and the distance are taken such that sum of the masses and the distance between primaries are unities.
|
The unit of the time ie. the time period of mn about m2 consists of 2x units such that the
|
The unit of the time i.e. the time period of $m_1$ about $m_2$ consists of $2\pi$ units such that the
|
hereafter discard filaments whose lengths are shorter than the smoothing length as non-physical.
|
hereafter discard filaments whose lengths are shorter than the smoothing length as non-physical.
|
The traditional picture of large-scale structure as a ‘cosmic web’ (7) suggests that filaments are connected, one-dimensional strands that end abruptly at their points of intersection.
|
The traditional picture of large-scale structure as a `cosmic web' \citep{CosmicWeb} suggests that filaments are connected, one-dimensional strands that end abruptly at their points of intersection.
|
As one filament begins and another ends, the local axis of structure should change direction rapidly.
|
As one filament begins and another ends, the local axis of structure should change direction rapidly.
|
The C parameter denotes the maximum angular rate of change in the axis of structure along a filament.
|
The $C$ parameter denotes the maximum angular rate of change in the axis of structure along a filament.
|
If this threshold is exceeded, filament tracing is stopped.
|
If this threshold is exceeded, filament tracing is stopped.
|
In order to test the sensitivity of the output filaments to the value of the C parameter, we set K=1 and generated filament networks in the N-body simulation with a range of C.
|
In order to test the sensitivity of the output filaments to the value of the $C$ parameter, we set $K=1$ and generated filament networks in the N-body simulation with a range of $C$.
|
In all of these tests, increasing the value of C led to an increase in the average length of the filaments and a decrease in the total number of filaments found.
|
In all of these tests, increasing the value of $C$ led to an increase in the average length of the filaments and a decrease in the total number of filaments found.
|
If the curvature criterion is not strict enough, a filament will be traced past its vertex and into another filament.
|
If the curvature criterion is not strict enough, a filament will be traced past its vertex and into another filament.
|
Since our algorithm only prevents filaments from starting within previously-identified filaments (they are allowed to cross one this can lead to double detections of filaments.
|
Since our algorithm only prevents filaments from starting within previously-identified filaments (they are allowed to cross one another), this can lead to double detections of filaments.
|
We can another),obtain a rough count of these double detections by comparing filament elements to one another, where a filament element is definedas a single step (of interval, A) on the grid.
|
We can obtain a rough count of these double detections by comparing filament elements to one another, where a filament element is definedas a single step (of interval, $\Delta$ ) on the grid.
|
In other words, for each step along a given filament, we find the closest filament element that is not a member of that same filament.
|
In other words, for each step along a given filament, we find the closest filament element that is not a member of that same filament.
|
If the closest filament element is within a smoothing length and has an axis of structure within C, then the original element is labelled a ‘repeat detection.’
|
If the closest filament element is within a smoothing length and has an axis of structure within $C$, then the original element is labelled a `repeat detection.'
|
The total number of repeat detections in an output filament network is denoted by R.
|
The total number of repeat detections in an output filament network is denoted by $R$.
|
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