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Home All issues Volume 494 / No 2 (February I 2009) A&A, 494 2 (2009) 489-508 Full HTML
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Table 1:

Basic properties of NGC 2685.
Description Parameter name   Reference
Classification of galaxy Type SB0+ de Vaucouleurs et al. (1991)
Right Ascension (J2000) (NED) RA $ {08}^{\rm h}{55}^{\rm m}{34}^{\rm s}\!\!.\:\!{75} $ NED
Declination (J2000) (NED) Dec $ ~ {+58}^{\circ}{44}^{\prime}{03}^{\prime\prime}\!\!\!.\;\!{9} $ NED
Optical heliocentric systemic velocity ( $\rm km~{\rm s}^{-1}$) $V_{\rm sys}$ $ 875.2 ~\pm~ 2.0 $ this work
Distance of object ($\rm Mpc$) D $ 15.2 ~\pm~ 3.8 $ this work
Scale between distance on sky and true distance ( ${\rm pc}/~^{\prime\prime}$) sc $ 74 ~\pm~ 19 $ this work
Apparent B-band magnitude ($\rm mag$) $m_{\rm B}$ $ 12.05 ~\pm~ 0.15 $ LEDA (Paturel et al. 2003)
Apparent I-band magnitude ($\rm mag$) $m_{\rm I}$ $ 9.90 ~\pm~ 0.10 $ LEDA (Paturel et al. 2003)
Extinction-corrected apparent B-band magnitude ($\rm mag$) $m_{\rm B}^{\rm c}$ $ 11.77 ~\pm~ 0.15 $ NED
Extinction-corrected apparent I-band magnitude ($\rm mag$) $m_{\rm I}^{\rm c}$ $ 9.54 ~\pm~ 0.12 $ this work
Absolute B-band magnitude ($\rm mag$) $M_{\rm B}$ $ -19.1 ~\pm~ 0.7 $ this work
Absolute I-band magnitude ($\rm mag$) $M_{\rm I}$ $ -21.4 ~\pm~ 0.6 $ this work
B-band luminosity ( $ 10^9~ {L}_\odot $) $L_{\rm B}$ $ 7.0 ~\pm~ 3.7 $ this work
I-band luminosity ( $ 10^9~ {L}_\odot $) $L_{\rm I}$ $ 15.2 ~\pm~ 7.7 $ this work
Total H I flux ( ${\rm Jy}~{\rm km}~{\rm s}^{-1}$) $F_{\rm {H {\sc i}}}$ $ 31.4 ~\pm~ 3.1 $ this work
H I mass ( $10^9~{M}_\odot$) $M_{\rm {H {\sc i}}}$ $ 1.7 ~\pm~ 0.9 $ this work
B-band optical radius ( $~^{\prime\prime}$) r25 $ 147 ~\pm~ 30 $ LEDA (Paturel et al. 2003)
H I radius ( $~^{\prime\prime}$) $r_{\rm {H {\sc i}}}$ $ 200 ~\pm~ 40 $ this work
Terminal radius ( $~^{\prime\prime}$) $r_{\rm t}$ $ 420 ~\pm~ 30 $ this work
B-band optical radius ($\rm kpc$) R25 $ 10.8 ~\pm~ 2.7 $ this work
H I radius ($\rm kpc$) $R_{\rm {H {\sc i}}}$ $ 14.8 ~\pm~ 3.7 $ this work
Terminal radius ($\rm kpc$) $R_{\rm t}$ $ 31.0 ~\pm~ 7.7 $ this work
Rotation velocity at terminal radius ( $\rm km~{\rm s}^{-1}$) $V_{\rm t}$ $147 ~\pm~ 15 $ this work
Rotation period at terminal radius (${\rm Gyr}$) $t_{\rm t}$ $ 1.297 ~\pm~ 0.030 $ this work
Dynamical mass ( $10^9~{M}_\odot$) $M_{\rm dyn}$ > $155 \pm 50 $ this work
Ratio of H I mass and B-band luminosity ( ${M}_\odot~{L}_\odot^{-1}$) $\frac{M_{\rm {H {\sc i}}}}{L_{\rm B}}$ $ 0.2 ~\pm~ 0.03 $ this work
Ratio of H I mass and I-band luminosity ( ${M}_\odot~{L}_\odot^{-1}$) $\frac{M_{\rm {H {\sc i}}}}{L_{\rm I}}$ $ 0.1 ~\pm~ 0.01 $ this work
Ratio of dynamical mass and H I mass. $\frac{M_{\rm dyn}}{M_{\rm {H {\sc i}}}}$ > $91 ~\pm~ 25 $ this work
Ratio of dynamical mass and B-band luminosity ( ${M}_\odot~{L}_\odot^{-1}$) $\frac{M_{\rm dyn}}{L_{\rm B}}$ > $ 22 ~\pm~ 7.3 $ this work
Ratio of dynamical mass and I-band luminosity ( ${M}_\odot~{L}_\odot^{-1}$) $\frac{M_{\rm dyn}}{L_{\rm I}}$ > $ 10.2 ~\pm~ 3.4 $ this work

Source LaTeX | All tables | In the text

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