Table 9: Amplitude of variations from synchronous optical-IR photometry of programme stars. Values of $A_\lambda /A_V$ from Cardelli et al. (1989).

Object		 JDa $\Delta U$ $\Delta B$ $\Delta V$ $\Delta R_{\rm C}$ $\Delta I_{\rm C}$ $\Delta J$ $\Delta H$ $\Delta K$ $\Delta L$ $\Delta M$ $\Delta N$ $\Delta Q$

RU Cen		 6991-7000 ... -0 $.\!\!^{\rm m}$42 -0 $.\!\!^{\rm m}$12 -0 $.\!\!^{\rm m}$02 0 $.\!\!^{\rm m}$10 ... ... ... ... ... ... ...
  6244-6245$^\S$ 0 $.\!\!^{\rm m}$13 0 $.\!\!^{\rm m}$13 0 $.\!\!^{\rm m}$10 0 $.\!\!^{\rm m}$09 0 $.\!\!^{\rm m}$09 ... ... ... ... ... ... ...
BU Cen 6991-6248$^\S$ ... -1 $.\!\!^{\rm m}$25 -0 $.\!\!^{\rm m}$98 -0 $.\!\!^{\rm m}$83 -0 $.\!\!^{\rm m}$41 -0 $.\!\!^{\rm m}$32 -0 $.\!\!^{\rm m}$25 -0 $.\!\!^{\rm m}$12 ... ... ... ...
DS Aqr 7040-7048 ... -0 $.\!\!^{\rm m}$96 -0 $.\!\!^{\rm m}$66 -0 $.\!\!^{\rm m}$54 -0 $.\!\!^{\rm m}$48 -0 $.\!\!^{\rm m}$37 -0 $.\!\!^{\rm m}$26 -0 $.\!\!^{\rm m}$22 ... ... ... ...
  7048-7052 ... 0 $.\!\!^{\rm m}$65 0 $.\!\!^{\rm m}$51 0 $.\!\!^{\rm m}$43 0 $.\!\!^{\rm m}$38 -0 $.\!\!^{\rm m}$07 -0 $.\!\!^{\rm m}$10 -0 $.\!\!^{\rm m}$10 ... ... ... ...
UY Ara 6998-7000 ... -0 $.\!\!^{\rm m}$39 -0 $.\!\!^{\rm m}$24 -0 $.\!\!^{\rm m}$18 -0 $.\!\!^{\rm m}$13 -0 $.\!\!^{\rm m}$30 -0 $.\!\!^{\rm m}$82 -0 $.\!\!^{\rm m}$18 ... ... ... ...
  7000-7040 ... 0 $.\!\!^{\rm m}$41 0 $.\!\!^{\rm m}$05 -0 $.\!\!^{\rm m}$10 -0 $.\!\!^{\rm m}$20 -0 $.\!\!^{\rm m}$14 -0 $.\!\!^{\rm m}$36 -0 $.\!\!^{\rm m}$47 ... ... ... ...
  7000-6244$^\S$ ... 1 $.\!\!^{\rm m}$13 0 $.\!\!^{\rm m}$67 0 $.\!\!^{\rm m}$47 0 $.\!\!^{\rm m}$34 0 $.\!\!^{\rm m}$34 0 $.\!\!^{\rm m}$18 ... ... ... ... ...
SX Cen* 6999-7353 ... -0 $.\!\!^{\rm m}$78 -0 $.\!\!^{\rm m}$72 -0 $.\!\!^{\rm m}$65 -0 $.\!\!^{\rm m}$58 -0 $.\!\!^{\rm m}$57 -0 $.\!\!^{\rm m}$53 -0 $.\!\!^{\rm m}$63 -0 $.\!\!^{\rm m}$63 ... ... ...
  6243-6248$^\S$ 0 $.\!\!^{\rm m}$51 0 $.\!\!^{\rm m}$44 0 $.\!\!^{\rm m}$34 0 $.\!\!^{\rm m}$30 0 $.\!\!^{\rm m}$28 0 $.\!\!^{\rm m}$26 0 $.\!\!^{\rm m}$26 0 $.\!\!^{\rm m}$38 0 $.\!\!^{\rm m}$45 0 $.\!\!^{\rm m}$43 ... ...
R Sct$^\dag $ 6991-7000 ... -0 $.\!\!^{\rm m}$48 -0 $.\!\!^{\rm m}$47 0 $.\!\!^{\rm m}$02 0 $.\!\!^{\rm m}$12 0 0 $.\!\!^{\rm m}$03 0 $.\!\!^{\rm m}$04 0 $.\!\!^{\rm m}$08 ... ... ...
  7000-7040 ... 0 $.\!\!^{\rm m}$55 0 $.\!\!^{\rm m}$30 -0 $.\!\!^{\rm m}$22 -0 $.\!\!^{\rm m}$30 0 -0 $.\!\!^{\rm m}$08 -0 $.\!\!^{\rm m}$14 -0 $.\!\!^{\rm m}$26 ... ... ...
  1.45-1.48$^{\P}$ ... ... ... ... ... -0 $.\!\!^{\rm m}$43 -0 $.\!\!^{\rm m}$39 -0 $.\!\!^{\rm m}$24 ... ... ... ...
  1.48-1.53$^{\P}$ ... ... ... ... ... -0 $.\!\!^{\rm m}$17 -0 $.\!\!^{\rm m}$22 -0 $.\!\!^{\rm m}$26 -0 $.\!\!^{\rm m}$38 ... ... ...
AI Sco 7000-7042 ... 3 $.\!\!^{\rm m}$57 3 $.\!\!^{\rm m}$16 2 $.\!\!^{\rm m}$99 2 $.\!\!^{\rm m}$85 0 $.\!\!^{\rm m}$38 0 $.\!\!^{\rm m}$40 0 $.\!\!^{\rm m}$44 0 $.\!\!^{\rm m}$38 -1 $.\!\!^{\rm m}$00 -0 $.\!\!^{\rm m}$64 0 $.\!\!^{\rm m}$05
  7041-7042 ... 0 $.\!\!^{\rm m}$50 0 $.\!\!^{\rm m}$39 0 $.\!\!^{\rm m}$40 0 $.\!\!^{\rm m}$40 ... ... ... ... -1 $.\!\!^{\rm m}$35 0 $.\!\!^{\rm m}$26 0 $.\!\!^{\rm m}$22
UW Cen 6243$^{\ddag }$-7000 ... 3 $.\!\!^{\rm m}$27 2 $.\!\!^{\rm m}$71 2 $.\!\!^{\rm m}$41 2 $.\!\!^{\rm m}$05 1 $.\!\!^{\rm m}$44 0 $.\!\!^{\rm m}$81 0 $.\!\!^{\rm m}$26 ... ... ... ...
RY Sgr 6991-6999 ... 0 $.\!\!^{\rm m}$03 -0 $.\!\!^{\rm m}$11 -0 $.\!\!^{\rm m}$20 -0 $.\!\!^{\rm m}$36 ... ... ... ... ... ... ...
  6991-7042 ... 0 $.\!\!^{\rm m}$20 0 -0 $.\!\!^{\rm m}$10 -0 $.\!\!^{\rm m}$25 -0 $.\!\!^{\rm m}$22 -0 $.\!\!^{\rm m}$22 -0 $.\!\!^{\rm m}$16 -0 $.\!\!^{\rm m}$07 ... ... ...
1711 Sgr 6999-7040 ... 0 $.\!\!^{\rm m}$93 0 $.\!\!^{\rm m}$50 0 $.\!\!^{\rm m}$67 0 $.\!\!^{\rm m}$19 -0 $.\!\!^{\rm m}$03 -0 $.\!\!^{\rm m}$09 -0 $.\!\!^{\rm m}$11 -0 $.\!\!^{\rm m}$14 ... ... ...
DY Cen 6999-7000 ... 0 0 $.\!\!^{\rm m}$03 0 $.\!\!^{\rm m}$16 0 $.\!\!^{\rm m}$12 ... ... ... ... ... ... ...
  6999-6248$^{\ddag }$ ... 0 $.\!\!^{\rm m}$08 0 $.\!\!^{\rm m}$20 0 $.\!\!^{\rm m}$25 0 $.\!\!^{\rm m}$36 ... ... ... ... ... ... ...
R Sge 6998-6999 ... 0 $.\!\!^{\rm m}$07 0 $.\!\!^{\rm m}$07 0 $.\!\!^{\rm m}$06 0 $.\!\!^{\rm m}$07 0 $.\!\!^{\rm m}$02 0 $.\!\!^{\rm m}$02 -0 $.\!\!^{\rm m}$02 -0 $.\!\!^{\rm m}$01 ... ... ...
$A_\lambda /A_V$   1.569 1.337 1.000 0.843 0.612 0.282 0.190 0.114 0.056 - - -
(a) Magnitude differences $\Delta$ mag calculated between Julian Dates indicated in this column; negative $\Delta$ mag indicates that the flux in the pass-band increased; $\dag $ data from Shenton et al. (1994b); * data from Shenton et al. (1994c); $^{\ddag }$ data from Goldsmith et al. (1990); $^\S$ data from Goldsmith et al. (1987a); $^{\P}$ three $J\!H\!K\!L\!M$ measurements at JD6991 separated by 43 and 72 min. Values of $A_\lambda /A_V$ from Cardelli et al. (1989).

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