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Table 9

Photometric flux evolution of the outer rings of SN1987A.

Date Instrument Filter Area 1 Area 2 Area 3 Area 4a

940924 WFPC2 F502N 6.15(1.55)b 8.00(2.00) 8.75(2.20) 6.15(1.55)c
1996-02-06 WFPC2 F502N 5.90(1.20) 5.45(1.35) 6.30(1.60) 5.45(1.35)d
1997-07-12 WFPC2 F502N 4.60(1.15) 3.60(0.90) 5.35(1.35) 3.50(0.90)
2000-06-16 WFPC2 F502N 3.15(0.80) 3.25(0.80) 3.75(0.90) 3.05(0.75)
2003-01-05 ACS F502N 3.95(1.20) N/A N/A 4.75(1.20)
2003-11-28 ACS F502N 8.50(2.20) 9.60(2.45) 9.75(2.45) 2.50(0.60)
2004-12-15 ACS F502N 5.40(1.35) 9.75(2.40) 14.00(4.20) N/A
1994-02-03 WFPC2 F656N 8.60(2.50) 20.00(6.00) 14.50(4.35) 22.00(6.60)
1997-07-10 WFPC2 F656N 10.50(2.10) 16.00(3.20) 11.00(2.20) 19.50(3.90)
1998-02-05 WFPC2 F656N 8.35(2.10) 15.00(3.00) 11.50(2.50) 19.00(3.80)
1999-01-07 WFPC2 F656N 9.20(1.85) 15.50(3.90) 11.00(2.75) 17.00(4.70)
1999-04-21 WFPC2 F656N 9.30(2.00) 16.50(3.30) 10.00(2.00) 17.50(3.50)
2000-01-14 WFPC2 F656N 7.90(1.60) 13.00(2.60) 10.50(2.10) 13.00(2.60)
2000-02-02 WFPC2 F656N 8.45(2.10) 12.50(2.50) 11.00(2.80) 15.50(3.90)
2000-06-16 WFPC2 F656N 6.75(1.35) 12.00(2.40) 6.25(2.00) 14.00(2.80)
2001-03-23 WFPC2 F656N 8.30(2.15) 13.00(3.25) 9.30(2.30) 13.00(2.60)
2001-12-07 WFPC2 F656N 7.90(1.50) 9.75(1.95) 7.50(2.00) 11.00(2.20)
2002-05-10 WFPC2 F656N 5.70(1.20) 13.50(3.30) 9.00(1.80) 13.50(3.35)
1994-09-24 WFPC2 F658N 14.50(2.90) 21.15(4.20) 17.50(3.50) 26.50(5.30)
1996-02-06 WFPC2 F658N 11.50(2.30) 18.00(3.60) 15.00(3.00) 23.50(4.70)
1996-09-01 WFPC2 F658N 11.00(2.20) 18.50(3.70) 15.00(3.00) 21.00(4.20)
2002-05-10 WFPC2 F658N 7.85(1.60) 12.00(2.40) 11.00(2.20) 12.00(2.40)
2003-01-05 ACS F658N 9.15(1.85) 15.20(3.05) 13.50(2.70) 14.00(2.80)
2003-08-12 ACS F658N 13.00(1.85) 19.50(3.90) 17.60(3.50) 17.50(3.50)
2003-11-28 ACS F658N 12.00(2.40) 19.50(3.90) 17.20(3.45) 17.00(3.40)
2004-12-15 ACS F658N 11.50(2.30) 18.00(3.60) 17.00(3.40) 15.00(3.00)
2005-04-02 ACS F658N 13.00(3.25) 17.50(3.50) 15.50(3.90) 17.00(4.25)

Notes. 

(a)

Flux is in units of 10-16 ergs s-1 cm-2.

(b)

The area corresponds to the area that the spectroscopic slit covered in the northern outer ring.

(c)

The area corresponds to the area that the spectroscopic slit covered in the southern outer ring.

(d)

The extinction correction was done in the same was as for the spectroscopy.

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