2012MNRAS.422.3574B

Query : 2012MNRAS.422.3574B

2012MNRAS.422.3574B - Mon. Not. R. Astron. Soc., 422, 3574-3590 (2012/June-1)

The SWELLS survey - III. Disfavouring `heavy' initial mass functions for spiral lens galaxies.

BREWER B.J., DUTTON A.A., TREU T., AUGER M.W., MARSHALL P.J., BARNABE M., BOLTON A.S., KOO D.C. and KOOPMANS L.V.E.

Abstract (from CDS):

We present gravitational lens models for 20 strong gravitational lens systems observed as part of the Sloan WFC Edge-on Late-type Lens Survey (SWELLS) project. 15 of the lenses are taken from Paper I, while five are newly discovered systems. The systems are galaxy-galaxy lenses where the foreground deflector has an inclined disc, with a wide range of morphological types, from late-type spiral to lenticular. For each system, we compare the total mass inside the critical curve inferred from gravitational lens modelling to the stellar mass inferred from stellar population synthesis (SPS) models, computing the stellar mass fraction f* ≡ MSPS/Mlens. We find that, for the lower mass SWELLS systems, adoption of a Salpeter stellar initial mass function (IMF) leads to estimates of f* that exceed 1. This is unphysical and provides strong evidence against the Salpeter IMF being valid for these systems. Taking the lower mass end of the SWELLS sample (σSIE < 230 km/s), we find that the IMF is lighter (in terms of stellar mass-to-light ratio) than Salpeter with 98 per cent probability, and consistent with the Chabrier IMF and IMFs between the two. This result is consistent with previous studies of spiral galaxies based on independent techniques. In combination with recent studies of massive early-type galaxies that have favoured a heavier Salpeter-like IMF, this result strengthens the evidence against a universal stellar IMF. Globular cluster systems of early-type galaxies in low-density environments

Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society2012 RAS

Journal keyword(s): gravitational lensing: strong - stars: luminosity function, mass function - galaxies: fundamental parameters - galaxies: spiral

Simbad objects: 95

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Number of rows : 95
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 SWELLS SDSS J0007+0053 lens G 00 07 32.746 +00 53 23.03           ~ 1 1
2 2MASX J00285286-0014350 AGN 00 28 52.867 -00 14 35.08   21.67 20.54     ~ 15 0
3 SWELLS SDSS J0028-0014 LS? 00 28 52.899 -00 14 36.00           ~ 1 0
4 SDSS J002852.90-001435.9 G 00 28 52.903 -00 14 35.99           ~ 2 0
5 SWELLS SDSS J0149-0010 source LI? 01 49 36.334 -00 10 08.81           ~ 1 0
6 SWELLS SDSS J0149-0010 LS? 01 49 36.334 -00 10 08.81           ~ 1 0
7 SWELLS SDSS J0149-0010 lens Le? 01 49 36.334 -00 10 08.81           ~ 1 0
8 SWELLS SDSS J0329-0027 source LI? 03 29 51.721 -00 27 38.20           ~ 1 0
9 SWELLS SDSS J0329-0027 LS? 03 29 51.721 -00 27 38.20           ~ 1 0
10 SWELLS SDSS J0329-0027 lens Le? 03 29 51.721 -00 27 38.20           ~ 1 0
11 LEDA 3088615 G 07 45 42.8570287632 +34 00 27.848215980           ~ 6 1
12 SDSS J082012.86+484736.7 GiC 08 20 12.8683727088 +48 47 36.714167556           ~ 6 0
13 SWELLS SDSS J0820+4847 source LeG 08 20 12.87 +48 47 37.1           ~ 2 0
14 SWELLS SDSS J0820+4847 gLS 08 20 12.87 +48 47 37.1           ~ 3 0
15 2MASX J08215723+1025558 G 08 21 57.2502824064 +10 25 55.899385968           ~ 3 0
16 SWELLS SDSS J0821+1025 LS? 08 21 57.26 +10 25 56.1           ~ 2 0
17 SWELLS SDSS J0821+1025 source LI? 08 21 57.26 +10 25 56.1           ~ 2 0
18 SWELLS SDSS J0822+1828 lens gLe 08 22 27.4701619168 +18 28 55.837864831           ~ 2 0
19 SWELLS SDSS J0822+1828 gLS 08 22 27.474 +18 28 55.83           ~ 1 0
20 SWELLS SDSS J0822+1828 source LeG 08 22 27.474 +18 28 55.83           ~ 1 0
21 2MASX J08251696+2109392 G 08 25 16.976 +21 09 39.55           ~ 5 1
22 SLACS SDSS J0841+3824 gLS 08 41 28.806 +38 24 13.72           ~ 15 0
23 SDSS J084128.80+382413.7 G 08 41 28.8060971856 +38 24 13.714226748     15.66   15.34 ~ 11 0
24 LEDA 2126036 LeG 08 41 28.81 +38 24 13.7           ~ 7 0
25 SDSS J090856.35+273049.8 AG? 09 08 56.354 +27 30 49.77           ~ 17 1
26 SDSS J091516.28+421152.8 gLe 09 15 16.28016 +42 11 52.8030           ~ 5 0
27 SWELLS SDSS J0915+4211 gLS 09 15 16.29 +42 11 52.8           ~ 3 0
28 SWELLS SDSS J0915+4211 source LeG 09 15 16.29 +42 11 52.8           ~ 3 0
29 SWELLS SDSS J0930+2855 lens BiC 09 30 17.3985262008 +28 55 00.287668452           ~ 3 0
30 SWELLS SDSS J0930+2855 source LeG 09 30 17.414 +28 55 00.24           ~ 1 0
31 SWELLS SDSS J0930+2855 gLS 09 30 17.414 +28 55 00.24           ~ 1 0
32 2dFGRS TGN351Z107 G 09 55 19.7243572848 +01 01 44.412851064   18.890 17.65 17.511 16.97 ~ 12 0
33 SLACS SDSS J0955+0101 source LeG 09 55 19.7243572848 +01 01 44.412851064           ~ 7 0
34 SLACS SDSS J0955+0101 gLS 09 55 19.7243572848 +01 01 44.412851064           ~ 15 0
35 SDSS J100002.69+283544.5 G 10 00 02.6928226968 +28 35 44.522628936           ~ 2 1
36 SWELLS SDSS J1021+2028 gLS 10 21 44.420 +20 28 39.82           ~ 1 0
37 SWELLS SDSS J1021+2028 lens gLe 10 21 44.420 +20 28 39.82           ~ 2 0
38 SWELLS SDSS J1021+2028 source LeG 10 21 44.420 +20 28 39.82           ~ 1 0
39 SDSS J102922.93+042001.8 G 10 29 22.9396530720 +04 20 01.877000352     16.69   16.13 ~ 11 0
40 SLACS SDSS J1029+0420 gLS 10 29 22.9396530720 +04 20 01.877000352           ~ 17 0
41 SLACS SDSS J1029+0420 source LeG 10 29 22.9396530720 +04 20 01.877000352           ~ 6 0
42 SLACS SDSS J1032+5322 source LeG 10 32 35.84 +53 22 34.9           ~ 5 0
43 SLACS SDSS J1032+5322 lens GiC 10 32 35.8414216032 +53 22 34.611340224     17.76   17.05 ~ 11 0
44 SLACS SDSS J1032+5322 gLS 10 32 35.846 +53 22 34.63           ~ 11 0
45 LEDA 2062274 LeG 10 37 45.0 +35 17 31           ~ 3 0
46 SDSS J103745.03+351730.9 G 10 37 45.0270162456 +35 17 30.941384280           ~ 4 0
47 SWELLS SDSS J1037+3517 gLS 10 37 45.03 +35 17 31.0           ~ 2 0
48 SDSS J110308.20+532227.9 G 11 03 08.2139063784 +53 22 27.965691444     17.14   16.43 ~ 11 1
49 [BBS2004] BG 0.7353 LeG 11 03 08.2139063784 +53 22 27.965691444           ~ 6 1
50 SLACS SDSS J1103+5322 gLS 11 03 08.2139063784 +53 22 27.965691444           ~ 14 0
51 SWELLS SDSS J1111+2234 source LeG 11 11 28.022 +22 34 50.62           ~ 1 0
52 SWELLS SDSS J1111+2234 gLS 11 11 28.022 +22 34 50.62           ~ 1 0
53 SWELLS SDSS J1111+2234 lens gLe 11 11 28.022 +22 34 50.62           ~ 3 0
54 SWELLS SDSS J1117+4704 lens gLe 11 17 35.3791104739 +47 04 07.376883261           ~ 4 0
55 SWELLS SDSS J1117+4704 source LeG 11 17 35.38 +47 04 07.4           ~ 2 0
56 SWELLS SDSS J1117+4704 gLS 11 17 35.38 +47 04 07.4           ~ 2 0
57 SDSS J113506.88+372023.9 GiC 11 35 06.8782556520 +37 20 23.897973408           ~ 6 0
58 SWELLS SDSS J1135+3720 source LeG 11 35 06.88 +37 20 23.9           ~ 2 0
59 SWELLS SDSS J1135+3720 gLS 11 35 06.88 +37 20 23.9           ~ 2 0
60 SWELLS SDSS J1203+2535 lens gLe 12 03 56.33 +25 35 49.1           ~ 3 0
61 SWELLS SDSS J1203+2535 gLS 12 03 56.33 +25 35 49.1           ~ 2 0
62 LEDA 1742297 LeG 12 03 56.4 +25 35 47           ~ 3 0
63 SWELLS SDSS J1249+0225 LS? 12 49 52.244 +02 25 04.70           ~ 1 0
64 SWELLS SDSS J1249+0225 source LI? 12 49 52.244 +02 25 04.70           ~ 1 0
65 SWELLS SDSS J1249+0225 lens G 12 49 52.2449049131 +02 25 04.634505680           ~ 1 0
66 [BBS2004] BG 0.7843 LeG 12 51 35.7039955512 -02 08 05.139169080           ~ 8 1
67 SLACS SDSS J1251-0208 gLS 12 51 35.7039955512 -02 08 05.139169080           ~ 9 0
68 2dFGRS TGN189Z141 G 12 51 35.7039955512 -02 08 05.139169080   19.255 17.71 17.837 17.25 ~ 11 1
69 SLACS SDSS J1313+0506 source LeG 13 13 26.70 +05 06 57.2           ~ 4 0
70 SLACS SDSS J1313+0506 gLS 13 13 26.701 +05 06 57.23           ~ 4 0
71 SDSS J131326.70+050657.2 G 13 13 26.7028776216 +05 06 57.250442952     17.71   17.10 ~ 5 0
72 SWELLS SDSS J1331+3638 gLS 13 31 40.32 +36 28 12.0           ~ 3 0
73 SWELLS SDSS J1331+3638 lens gLe 13 31 40.32 +36 28 12.0           ~ 5 0
74 2MASX J13314029+3628115 G 13 31 40.3310343552 +36 28 11.977565268           ~ 5 0
75 SWELLS SDSS J1403+1530 LS? 14 03 11.764 +15 30 39.82           ~ 1 0
76 SWELLS SDSS J1403+1530 source LI? 14 03 11.764 +15 30 39.82           ~ 1 0
77 LEDA 1486556 G 14 03 11.76516 +15 30 39.8006           ~ 3 0
78 SWELLS SDSS J1422+4134 source LI? 14 22 26.171 +41 34 35.80           ~ 1 0
79 SWELLS SDSS J1422+4134 LS? 14 22 26.171 +41 34 35.80           ~ 1 0
80 2MASX J14222621+4134353 G 14 22 26.175 +41 34 35.82           ~ 2 0
81 SDSS J162909.91+470843.1 G 16 29 09.91896 +47 08 43.1592           ~ 2 0
82 SWELLS SDSS J1629+4708 source LI? 16 29 09.920 +47 08 43.11           ~ 1 0
83 SWELLS SDSS J1629+4708 LS? 16 29 09.920 +47 08 43.11           ~ 1 0
84 SWELLS SDSS J1633+1341 lens Le? 16 33 39.560 +13 41 13.59           ~ 1 0
85 SWELLS SDSS J1633+1341 LS? 16 33 39.560 +13 41 13.59           ~ 1 0
86 SWELLS SDSS J1633+1341 source LI? 16 33 39.560 +13 41 13.59           ~ 1 0
87 SWELLS SDSS J1703+2451 gLS 17 03 41.47 +24 51 40.0           ~ 2 0
88 SWELLS SDSS J1703+2451 source LeG 17 03 41.47 +24 51 40.0           ~ 2 0
89 2MASX J17034153+2451399 AGN 17 03 41.4773427936 +24 51 39.983425056           ~ 8 0
90 SLACS SDSS J2141-0001 source LeG 21 41 54.6809954832 -00 01 12.330169392           ~ 5 0
91 SLACS SDSS J2141-0001 gLS 21 41 54.6809954832 -00 01 12.330169392           ~ 10 0
92 SDSS J214154.67-000112.2 G 21 41 54.6809954832 -00 01 12.330169392         16.83 ~ 10 0
93 SWELLS SDSS J2333-1042 lens Le? 23 33 05.291 -10 42 11.84           ~ 1 0
94 SWELLS SDSS J2333-1042 LS? 23 33 05.291 -10 42 11.84           ~ 1 0
95 SWELLS SDSS J2333-1042 source LI? 23 33 05.291 -10 42 11.84           ~ 1 0

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