Observation of light echoes around very young stars

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Table 1:

Observing Log.
Date	UT	Exp time (s)	V Mag^a	Angular distance^b	Surface brightness^c
2 454 298.62	2007 07 17 02:49	1800	11.1	45	2.0
2 454 325.59	2007 08 13 02:12	1800	10.7	20	1.2
2 454 328.57	2007 08 16 01:46	1800	11.1	30	2.7
2 454 332.54	2007 08 20 00:57	1800	11.1	40	1.6
2 454 352.56	2007 09 09 01:33	2400	11.5	55	2.0
2 454 356.52	2007 09 13 00:34	2400	11.7	60	1.5
2 454 361.58	2007 09 18 01:52	3000	11.4	65	0.7
2 454 384.52	2007 10 11 00:32	2400	10.9	35	5.0
2 454 390.52	2007 10 17 00:38	3000	11.2	45	3.4

Notes. ^(a) Typical uncertainties are 0.2 mag; ^(b) given in arcsec; typical uncertainties are 2 $^{\prime\prime}$ ; ^(c) given in units of 10^-19 erg cm^-2 s^-1 Å^-1 arcsec^-2; typical uncertainties are 10^-20 erg cm^-2 s^-1 Å^-1 arcsec^-2.

Source LaTeX | All tables | In the text

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