Elisa Toloba - magpop
Elisa Toloba - magpop
Elisa Toloba - magpop
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ELISA TOLOBA<br />
MAGPOP- Malta October 29th-31st 2007
OBSERVATIONS I<br />
SAMPLE<br />
21 dwarf<br />
elliptical galaxies<br />
3 field dEs 18 Virgo dEs
OBSERVATIONS II<br />
INSTRUMENTAL CONFIGURATION<br />
WHT-ISIS 3 shots 35009000 Å<br />
B1 (35004300 Ǻ)<br />
B2 (41004900 Ǻ)<br />
B3 (48005600 Ǻ)<br />
R1 (55006700 Ǻ) R2 (77508950 Ǻ)<br />
4000 5000 6000 7000 8000 9000 Ǻ<br />
INT-IDS<br />
1 shot 46005700 Å<br />
B3 (46005700 Å)
Dates<br />
Instrument<br />
Grating<br />
Dispersion<br />
λ range<br />
Spectral<br />
resolution<br />
Spatial<br />
resolution<br />
Slit width<br />
R1200B<br />
0.44 Å/pixel<br />
34455600 Å<br />
1.56Å (FWHM)<br />
0.40 “/pixel<br />
2.0”<br />
OBSERVATIONS II<br />
RUN 1<br />
RUNS<br />
December 24th27th 2005<br />
WHTISIS<br />
R600R<br />
0.87 Å/pixel<br />
55008950 Å<br />
3.22Å (FWHM)<br />
0.44 “/pixel<br />
2.0”<br />
RUN 2<br />
January 21st<br />
23rd 2007<br />
INTIDS<br />
R1200B<br />
0.48 Å/pixel<br />
46005700 Å<br />
1.18Å (FWHM)<br />
0.40 “/pixel<br />
2.0”<br />
RUN 3<br />
February 10th<br />
12th 2007<br />
WHTISIS<br />
R1200B<br />
0.44 Å/pixel<br />
41004900 Å<br />
1.60Å (FWHM)<br />
0.40 “/pixel<br />
2.0”
OBSERVATIONS III<br />
SOME EXAMPLES OF THE SPECTRA OBTAINED
Galaxy<br />
VCC0308<br />
VCC0397<br />
VCC0917<br />
VCC1087<br />
VCC1122<br />
VCC1695<br />
VCC1861<br />
(S/N) Å<br />
38<br />
41<br />
53<br />
42<br />
45<br />
48<br />
40<br />
Template effect?<br />
(S/N) Å<br />
51<br />
47<br />
69<br />
64<br />
59<br />
60<br />
56<br />
Seeing, observational reasons?<br />
RESULTS I<br />
‘PROBLEMS’<br />
σ (km/s)<br />
28±2<br />
32±2<br />
34±1<br />
46±2<br />
34±2<br />
28±1<br />
39±2<br />
σ (km/s)<br />
41±3<br />
46±3<br />
35±2<br />
45±2<br />
46±3<br />
37±3<br />
42±2<br />
V rad (km/s)<br />
1517±1<br />
2434±1<br />
1237±1<br />
647±1<br />
450±1<br />
1703±1<br />
618±1<br />
The stars were NOT filling the slit ELODIE (schelle)<br />
velocity dispersion=0!!!<br />
V rad (km/s)<br />
1517±2<br />
2413±1<br />
1225±1<br />
647±1<br />
456±1<br />
1701±1<br />
621±2
Galaxy<br />
VCC0308<br />
VCC0397<br />
VCC0917<br />
VCC1087<br />
VCC1122<br />
VCC1695<br />
VCC1861<br />
(S/N) Å<br />
38<br />
41<br />
53<br />
42<br />
45<br />
48<br />
40<br />
Template effect?<br />
(S/N) Å<br />
51<br />
47<br />
69<br />
64<br />
59<br />
60<br />
56<br />
Seeing, observational reasons?<br />
RESULTS I<br />
‘PROBLEMS’<br />
σ (km/s)<br />
28±2<br />
32±2<br />
34±1<br />
46±2<br />
34±2<br />
28±1<br />
39±2<br />
σ (km/s)<br />
41±3<br />
46±3<br />
35±2<br />
45±2<br />
46±3<br />
37±3<br />
42±2<br />
V rad (km/s)<br />
1517±1<br />
2434±1<br />
1237±1<br />
647±1<br />
450±1<br />
1703±1<br />
618±1<br />
The stars were NOT filling the slit ELODIE (schelle)<br />
velocity dispersion=0!!!<br />
V rad (km/s)<br />
1517±2<br />
2413±1<br />
Geha et al. (2003)<br />
30.6±0.4<br />
38.7±1.1<br />
25.0±7.6<br />
1225±1<br />
647±1<br />
456±1<br />
1701±1<br />
Pedraz et al. (2002)<br />
621±2
Galaxy<br />
VCC0308<br />
VCC0397<br />
VCC0917<br />
VCC1087<br />
VCC1122<br />
VCC1695<br />
VCC1861<br />
(S/N) Å<br />
38<br />
41<br />
53<br />
42<br />
45<br />
48<br />
40<br />
(S/N) Å<br />
51<br />
47<br />
69<br />
64<br />
59<br />
60<br />
56<br />
RESULTS II<br />
SOLUTIONS<br />
σ (km/s)<br />
27±3<br />
31±2<br />
33±1<br />
46±2<br />
33±1<br />
27±2<br />
39±2<br />
σ (km/s)<br />
29±3<br />
31±4<br />
32±3<br />
39±3<br />
47±3<br />
29±4<br />
34±4<br />
V rad (km/s)<br />
1517±1<br />
2434±1<br />
1237±1<br />
647±1<br />
450±1<br />
1703±1<br />
618±1<br />
V rad (km/s)<br />
1515±2<br />
2413±2<br />
1223±1<br />
645±1<br />
454±2<br />
1700±1<br />
618±2<br />
Spatial resolution slit-width direction ≠ spatial resolution along the slit !!!
Galaxy<br />
VCC0021<br />
VCC0856<br />
VCC0990<br />
VCC1183<br />
VCC1261<br />
VCC1431<br />
VCC1549<br />
VCC1910<br />
VCC1912<br />
VCC1947<br />
RESULTS III<br />
RADIAL VELOCITY AND VELOCITY DISPERSION<br />
(S/N) Å<br />
36<br />
24<br />
50<br />
41<br />
60<br />
47<br />
33<br />
49<br />
58<br />
50<br />
σ (km/s)<br />
20±8<br />
29±5<br />
42±2<br />
43±2<br />
50±2<br />
62±3<br />
41±3<br />
42±1<br />
38±2<br />
47±2<br />
INT 2007 WHT 2007 WHT 2005<br />
V rad (km/s)<br />
464±4<br />
977±3<br />
1686±1<br />
1291±1<br />
1803±1<br />
1469±2<br />
1371±2<br />
175±1<br />
144±2<br />
953±1<br />
Galaxy<br />
VCC0308<br />
VCC0397<br />
VCC0917<br />
VCC1087<br />
VCC1122<br />
VCC1695<br />
VCC1861<br />
VCC0523<br />
NGC3073<br />
ID0734<br />
ID0872<br />
(S/N) Å<br />
38<br />
41<br />
53<br />
42<br />
45<br />
48<br />
40<br />
52<br />
123<br />
30<br />
30<br />
σ (km/s)<br />
27±3<br />
31±2<br />
33±1<br />
46±2<br />
33±1<br />
27±2<br />
39±2<br />
39±1<br />
40±1<br />
31±4<br />
21±5<br />
V rad (km/s)<br />
1517±1<br />
2434±1<br />
1237±1<br />
647±1<br />
450±1<br />
1703±1<br />
618±1<br />
1516±1<br />
1174±1<br />
1598±2<br />
1145±2
Galaxy<br />
VCC0021<br />
VCC0856<br />
VCC0990<br />
VCC1183<br />
VCC1261<br />
VCC1431<br />
VCC1549<br />
VCC1910<br />
VCC1912<br />
VCC1947<br />
RESULTS III<br />
RADIAL VELOCITY AND VELOCITY DISPERSION<br />
(S/N) Å<br />
36<br />
24<br />
50<br />
41<br />
60<br />
47<br />
33<br />
49<br />
58<br />
50<br />
σ (km/s)<br />
20±8<br />
29±5<br />
42±2<br />
43±2<br />
50±2<br />
62±3<br />
41±3<br />
42±1<br />
38±2<br />
47±2<br />
INT 2007 WHT 2007 WHT 2005<br />
V rad (km/s)<br />
464±4<br />
977±3<br />
1686±1<br />
1291±1<br />
1803±1<br />
1469±2<br />
1371±2<br />
175±1<br />
144±2<br />
953±1<br />
Galaxy<br />
VCC0308<br />
VCC0397<br />
VCC0917<br />
VCC1087<br />
VCC1122<br />
VCC1695<br />
VCC1861<br />
VCC0523<br />
NGC3073<br />
ID0734<br />
ID0872<br />
(S/N) Å<br />
38<br />
41<br />
53<br />
42<br />
45<br />
48<br />
40<br />
σ (km/s)<br />
27±3<br />
31±2<br />
33±1<br />
46±2<br />
33±1<br />
27±2<br />
39±2<br />
39±1<br />
40±1<br />
31±4<br />
21±5<br />
V rad (km/s)<br />
1517±1<br />
2434±1<br />
1237±1<br />
647±1<br />
450±1<br />
1703±1<br />
618±1<br />
1516±1<br />
1174±1<br />
1598±2<br />
1145±2
RESULTS V<br />
ROTATION CURVES<br />
VCC0397 (WHT07) VCC1087 (WHT07)<br />
VCC1122(WHT07)<br />
VCC1947(INT07)
RESULTS VI<br />
ROTATION CURVES<br />
VCC1910 (INT07) VCC0523(WHT05)<br />
ID0734(WHT05) NGC3073(WHT05)
RESULTS IV<br />
dEs ROTATIONALLY SUPPORTED?<br />
Bender & Nieto (1990)<br />
De Ricke et al. (2001)<br />
Guhathakurta & van del Marel<br />
(2001)<br />
Pedraz et al. (2002) (dEs)<br />
LINE: predictions Binney (1978)<br />
Pedraz et al. (2002) (dS0s)<br />
THIS WORK
VCC0917(INT07)<br />
RESULTS VII<br />
VELOCITY DISPERSION PROFILES<br />
VCC0308(WHT07)<br />
VCC0523(WHT05) VCC1261(INT07)
VCC1912(INT07)<br />
RESULTS VIII<br />
VELOCITY DISPERSION PROFILES<br />
VCC1861(WHT07)<br />
VCC1122(WHT07) VCC1947(INT07)
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