Astronomy & Astrophysics

All Figures

$\begin{figure} \par\includegraphics[width=6cm,angle=-90]{7300f1.ps}\end{figure}$ Figure 1: Synthetic spectra for the eight typical galaxy types from PÉGASE.2. The vertical lines denote the limits of the five SDSS filters (transmission below 1e-4 of the peak). (Emission lines are not included). The legend at the right defines colour used to plot each type of galaxy ( top) and SDSS filter ( bottom).
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In the text

$\begin{figure} \par\includegraphics[width=6cm,angle=-90]{7300f2.ps}\end{figure}$ Figure 2: Colour-colour (g-r vs. r-i) diagram of synthesized photometry of SDSS galaxy spectra (black) and synthetic photometry of the eight typical galaxy types generated from the PÉGASE models (red points).
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In the text

$\begin{figure} \par\includegraphics[width=6cm,angle=-90]{7300f3.ps}\end{figure}$ Figure 3: Colour-colour (g-r vs. r-i) diagram of synthesized photometry of SDSS galaxy spectra (black) and of synthetic PÉGASE spectra of the typical Sbc model (yellow) and the models of Sbc with different values of p1 (red). The largest g-r corresponds to p1=1 and the smallest g-r to p1=2.
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In the text

$\begin{figure} \par\includegraphics[width=6cm,angle=-90]{7300f4.ps}\end{figure}$ Figure 4: Colour-colour (g-r vs. r-i) diagram of synthesized photometry of SDSS galaxy spectra (black) and of synthetic PÉGASE spectra of the typical Sbc model (yellow) and the models of Sbc with different values of p2 (red). The largest g-r corresponds to p2=2000 Myr/ $M_{\odot }$ and the smallest g-r to p2=20 000 Myr/ $M_{\odot }$ .
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In the text

$\begin{figure} \par\includegraphics[width=6cm,angle=-90]{7300f5.ps}\end{figure}$ Figure 5: Colour-colour (g-r vs. r-i) diagram of synthesized photometry of SDSS galaxy spectra (black) and of synthetic PÉGASE spectra of the typical Sbc model (yellow) and the models of Sbc with different values of infall timescale (red). The largest g-r corresponds to infall timescale = 100 My and the smallest g-r to infall timescale = 10 Gyr.
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In the text

$\begin{figure} \par\includegraphics[width=6cm,angle=-90]{7300f6.ps}\end{figure}$ Figure 6: Colour-colour (g-r vs. r-i) diagram of synthesized photometry of SDSS galaxy spectra (black) and of synthetic PÉGASE spectra of the typical E model (yellow) and the models of E with different values of age of galactic winds (red). The largest g-r corresponds to age of galactic winds = 7.5 Gy and the smallest g-r to 0.1 Gyr.
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In the text

$\begin{figure} \par\includegraphics[width=6cm,angle=-90]{7300f7.ps}\end{figure}$ Figure 7: Colour-colour (g-r vs. r-i) diagram of synthesized photometry of SDSS galaxy spectra (black) and of synthetic PÉGASE spectra of the 8 typical models of PÉGASE.2 (yellow). Moving from the lower left to the upper right part of the diagram we encounter types from Im to E. The red dots along both sides of the typical models represent the spectra of both the regular and random library.
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In the text

$\begin{figure} \par\includegraphics[width=6cm,angle=-90]{7300f8.ps}\end{figure}$ Figure 8: The simulated BP and RP spectra of the synthetic spectra for the eight typical galaxy types from PÉGASE.2. Black, green, blue, yellow, magenta, light blue and red denote galaxies of type E, Sa, Sb, Sbc, Sc, Sd and Im respectively.
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In the text

$\begin{figure} \par\includegraphics[width=6cm,angle=-90]{7300f9.ps}\end{figure}$ Figure 9: The 9691 simulated Gaia galaxy spectra with z=0 plotted as their projections onto the first three Principal Components. Black, green, blue, light blue, magenta, yellow and red denote galaxies of type E, Sa, Sb, Sbc, Sc, Sd and Im respectively.
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In the text

$\begin{figure} \par\setlength{\unitlength}{1cm} \begin{picture} (18,15) \put(0,... ...s hoffset=0 voffset=0 hscale=20 vscale=20 angle=-90}} \end{picture}\end{figure}$ Figure 10: Galaxy parameter estimation performance. For each of the nine APs we plot the predicted vs. true AP values for the test set. The red line indicates the line of perfect estimation. The summary errors are given in Table 6.
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In the text

$\begin{figure} \includegraphics[width=6cm,angle=-90]{7300f11.ps} \end{figure}$ Figure 11: The 48 719 simulated Gaia galaxy spectra with nonzero redshift plotted as their projections onto the first three Principal Components. Black, green, blue, light blue, magenta, yellow and red denote galaxies of type E, Sa, Sb, Sbc, Sc, Sd and Im respectively.
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In the text

$\begin{figure} \setlength{\unitlength}{1cm} \begin{picture} (18,10) \put(0,10){... ...s hoffset=0 voffset=0 hscale=20 vscale=20 angle=-90}} \end{picture}\end{figure}$ Figure 12: Distribution of predicted values of redshift shows separately for the five true values of redshift ( z=0, 0.05, 0.1, 0.15 and 0.2)
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In the text

$\begin{figure} \par\includegraphics[width=6cm,angle=-90]{7300f1.ps}\end{figure}$	Figure 1: Synthetic spectra for the eight typical galaxy types from PÉGASE.2. The vertical lines denote the limits of the five SDSS filters (transmission below 1e-4 of the peak). (Emission lines are not included). The legend at the right defines colour used to plot each type of galaxy ( top) and SDSS filter ( bottom).
Open with DEXTER

$\begin{figure} \par\includegraphics[width=6cm,angle=-90]{7300f2.ps}\end{figure}$	Figure 2: Colour-colour (g-r vs. r-i) diagram of synthesized photometry of SDSS galaxy spectra (black) and synthetic photometry of the eight typical galaxy types generated from the PÉGASE models (red points).
Open with DEXTER

$\begin{figure} \par\includegraphics[width=6cm,angle=-90]{7300f3.ps}\end{figure}$	Figure 3: Colour-colour (g-r vs. r-i) diagram of synthesized photometry of SDSS galaxy spectra (black) and of synthetic PÉGASE spectra of the typical Sbc model (yellow) and the models of Sbc with different values of p1 (red). The largest g-r corresponds to p1=1 and the smallest g-r to p1=2.
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$\begin{figure} \par\includegraphics[width=6cm,angle=-90]{7300f4.ps}\end{figure}$	Figure 4: Colour-colour (g-r vs. r-i) diagram of synthesized photometry of SDSS galaxy spectra (black) and of synthetic PÉGASE spectra of the typical Sbc model (yellow) and the models of Sbc with different values of p2 (red). The largest g-r corresponds to p2=2000 Myr/ $M_{\odot }$ and the smallest g-r to p2=20 000 Myr/ $M_{\odot }$ .
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$\begin{figure} \par\includegraphics[width=6cm,angle=-90]{7300f5.ps}\end{figure}$	Figure 5: Colour-colour (g-r vs. r-i) diagram of synthesized photometry of SDSS galaxy spectra (black) and of synthetic PÉGASE spectra of the typical Sbc model (yellow) and the models of Sbc with different values of infall timescale (red). The largest g-r corresponds to infall timescale = 100 My and the smallest g-r to infall timescale = 10 Gyr.
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$\begin{figure} \par\includegraphics[width=6cm,angle=-90]{7300f6.ps}\end{figure}$	Figure 6: Colour-colour (g-r vs. r-i) diagram of synthesized photometry of SDSS galaxy spectra (black) and of synthetic PÉGASE spectra of the typical E model (yellow) and the models of E with different values of age of galactic winds (red). The largest g-r corresponds to age of galactic winds = 7.5 Gy and the smallest g-r to 0.1 Gyr.
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$\begin{figure} \par\includegraphics[width=6cm,angle=-90]{7300f7.ps}\end{figure}$	Figure 7: Colour-colour (g-r vs. r-i) diagram of synthesized photometry of SDSS galaxy spectra (black) and of synthetic PÉGASE spectra of the 8 typical models of PÉGASE.2 (yellow). Moving from the lower left to the upper right part of the diagram we encounter types from Im to E. The red dots along both sides of the typical models represent the spectra of both the regular and random library.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=6cm,angle=-90]{7300f8.ps}\end{figure}$	Figure 8: The simulated BP and RP spectra of the synthetic spectra for the eight typical galaxy types from PÉGASE.2. Black, green, blue, yellow, magenta, light blue and red denote galaxies of type E, Sa, Sb, Sbc, Sc, Sd and Im respectively.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=6cm,angle=-90]{7300f9.ps}\end{figure}$	Figure 9: The 9691 simulated Gaia galaxy spectra with z=0 plotted as their projections onto the first three Principal Components. Black, green, blue, light blue, magenta, yellow and red denote galaxies of type E, Sa, Sb, Sbc, Sc, Sd and Im respectively.
Open with DEXTER

$\begin{figure} \par\setlength{\unitlength}{1cm} \begin{picture} (18,15) \put(0,... ...s hoffset=0 voffset=0 hscale=20 vscale=20 angle=-90}} \end{picture}\end{figure}$	Figure 10: Galaxy parameter estimation performance. For each of the nine APs we plot the predicted vs. true AP values for the test set. The red line indicates the line of perfect estimation. The summary errors are given in Table 6.
Open with DEXTER

$\begin{figure} \includegraphics[width=6cm,angle=-90]{7300f11.ps} \end{figure}$	Figure 11: The 48 719 simulated Gaia galaxy spectra with nonzero redshift plotted as their projections onto the first three Principal Components. Black, green, blue, light blue, magenta, yellow and red denote galaxies of type E, Sa, Sb, Sbc, Sc, Sd and Im respectively.
Open with DEXTER

$\begin{figure} \setlength{\unitlength}{1cm} \begin{picture} (18,10) \put(0,10){... ...s hoffset=0 voffset=0 hscale=20 vscale=20 angle=-90}} \end{picture}\end{figure}$	Figure 12: Distribution of predicted values of redshift shows separately for the five true values of redshift ( z=0, 0.05, 0.1, 0.15 and 0.2)
Open with DEXTER