2002AJ....124.3042W

Query : 2002AJ....124.3042W

2002AJ....124.3042W - Astron. J., 124, 3042-3049 (2002/December-0)

Narrow-line Seyfert 1 galaxies from the Sloan Digital Sky Survey early data release.

WILLIAMS R.J., POGGE R.W. and MATHUR S.

Abstract (from CDS):

We present a sample of 150 narrow-line Seyfert 1 galaxies (NLS1's) found within the Sloan Digital Sky Survey (SDSS) Early Data Release (EDR), only two of which were previously identified as such. This substantially increases the known number of NLS1's and provides a basic method by which to identify many more with subsequent releases of SDSS data. With its large size and homogeneous, well-defined selection criteria, this sample will help alleviate two major problems that have plagued NLS1 research in the past; namely, their relative rarity and significant differences in selection algorithms between the known samples. Forty-five of these SDSS-selected NLS1's are detected at energies of 0.1-2 keV in the ROSAT All-Sky Survey (RASS) and are found to have ultrasoft X-ray spectra with photon indices of Γ≳2, in agreement with previous results for NLS1's. However, about 10-20 of those NLS1's that were not detected by ROSAT have optical properties very similar to the detected objects and so should also have been detected by the RASS. This may be due to either significant intrinsic absorption in many NLS1's, or a significant subclass of NLS1's that have uncharacteristic, intrinsically flatter (hence harder) X-ray spectral energy distributions.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Active - Galaxies: Seyfert - X-Rays

VizieR on-line data: <Available at CDS (J/AJ/124/3042): table1.dat>

Simbad objects: 150

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Number of rows : 150
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 2SLAQ J000109.12-004121.6 Sy1 00 01 09.1250509344 -00 41 21.802960320   19.55 19.24     ~ 34 0
2 LBQS 0006+0015 Sy1 00 08 34.7224708416 +00 31 56.200631592   18.36 18.08     ~ 53 0
3 LBQS 0010+0035 Sy1 00 13 27.3148177584 +00 52 32.059679016   18.26 17.96     ~ 53 0
4 2SLAQ J002212.99-004832.5 Sy1 00 22 13.0024819824 -00 48 32.605473996   20.37 19.87     ~ 10 0
5 2SLAQ J002233.27-003448.5 Sy1 00 22 33.2741173752 -00 34 48.522734400   18.1 18.91 18.4   ~ 34 0
6 LEDA 138179 Sy1 00 23 05.0358034224 -01 07 43.485377988   19.26 18.83     ~ 24 0
7 2SLAQ J002752.40+002615.6 Sy1 00 27 52.3978299696 +00 26 15.725679936   19.13 18.72     ~ 47 0
8 2SLAQ J003024.93+000254.5 Sy1 00 30 24.9349731792 +00 02 54.579641352   19.20 18.81     ~ 13 0
9 2MASS J00323821-0100352 Sy1 00 32 38.2014103344 -01 00 35.327253996   18.24 17.81     ~ 20 0
10 PB 6040 Sy1 00 34 31.7440830480 -00 13 12.766625688   18.35 18.16     ~ 46 0
11 2MASS J00371100+0021279 Sy1 00 37 11.0042126184 +00 21 27.828043848   19.31 18.81     ~ 27 0
12 2MASS J00405217+0000573 Sy1 00 40 52.1492261088 +00 00 57.279002544   18.66 18.44     ~ 39 0
13 2SLAQ J004338.54-005814.6 Sy1 00 43 38.5415540832 -00 58 14.700367632   19.29 19.09     ~ 31 0
14 CAIRNS J005446.15+004204.0 Sy1 00 54 46.1709619920 +00 42 04.057716420   20.04 19.43     ~ 13 0
15 2SLAQ J005921.37+004108.8 Sy1 00 59 21.3698215392 +00 41 08.840716080   17.6 19.22 18.0   ~ 37 0
16 1RXS J010227.1-003911 Sy1 01 02 26.3183653728 -00 39 04.529536668   16.82 16.54 15.6   ~ 68 0
17 2SLAQ J011357.93-011139.8 Sy1 01 13 57.9367877520 -01 11 39.857603100   19.26 18.92     ~ 32 0
18 LEDA 1154714 Sy1 01 17 03.5826317664 +00 00 27.366719364   17.29 16.79     ~ 54 0
19 2SLAQ J011712.81-005817.4 Sy1 01 17 12.8137527720 -00 58 17.475452544   18.89 18.78     ~ 35 0
20 [HB91] 0116-004 Sy1 01 19 29.0657854968 -00 08 39.763887432   17.79 17.35     ~ 37 0
21 2SLAQ J013046.16-000800.8 Sy1 01 30 46.1647936272 -00 08 00.823257636   19.71 19.38     ~ 14 0
22 2MASX J01352169-0044017 Sy1 01 35 21.6800252832 -00 44 02.072313276   18.32 17.86     ~ 34 0
23 2SLAQ J013842.05+004020.0 Sy1 01 38 42.0454029600 +00 40 19.999260012   19.29 19.05     ~ 31 0
24 2SLAQ J013940.99-010944.4 Sy1 01 39 40.9914529176 -01 09 44.437409820   19.35 18.85     ~ 17 0
25 2SLAQ J014234.40-011417.3 Sy1 01 42 34.4062702896 -01 14 17.428210584   18.95 18.70     ~ 36 0
26 [BTW2010] SS15 Sy1 01 44 12.7693519632 -00 06 10.521651420   21.00 20.35     ~ 14 0
27 SDSS J014542.78+005314.9 Sy1 01 45 42.7777712496 +00 53 15.029332548   19.75 19.42     ~ 27 0
28 CAIRNS J014559.45+003524.7 Sy1 01 45 59.4491177712 +00 35 24.795178980   19.79 19.34     ~ 13 0
29 2MFGC 1336 Sy1 01 46 44.8288983240 -00 40 43.132280124   17.71 17.44 12.6   ~ 74 0
30 2SLAQ J014951.65+002536.5 Sy1 01 49 51.6569916888 +00 25 36.510589056   19.64 19.17     ~ 18 0
31 2MASS J01524975+0023145 Sy1 01 52 49.7642981784 +00 23 14.614749132   18.08 17.87     ~ 47 0
32 CXO J015652.3-001221 Sy1 01 56 52.4299162848 -00 12 22.114601172   18.96 18.55     ~ 18 0
33 2SLAQ J020431.63+002400.5 Sy1 02 04 31.6398147648 +00 24 00.533812356   19.84 19.42     ~ 13 0
34 2SLAQ J021610.56+000538.3 Sy1 02 16 10.5670725984 +00 05 38.424630192   19.18 18.85     ~ 29 0
35 2MASS J02165246-0023352 Sy1 02 16 52.4778263640 -00 23 35.385485136   19.56 18.93     ~ 33 0
36 [VV2006] J022205.3-004947 Sy1 02 22 05.3752179648 -00 49 47.977207500   19.04 18.70     ~ 30 0
37 SDSS J022756.27+005733.2 Sy1 02 27 56.2766667624 +00 57 33.170583420   19.02 18.45     ~ 17 0
38 2MASS J02284147+0052085 Sy1 02 28 41.4670161288 +00 52 08.614488684   19.28 18.87     ~ 19 0
39 PHL 4106 Sy1 02 29 23.4390594144 -00 00 47.930594544   19.09 18.91     ~ 37 0
40 2MASS J02305738-0100339 Sy1 02 30 57.3942178296 -01 00 33.709615164   17.8 18.64 18.3   ~ 42 0
41 2SLAQ J023211.82+000802.3 Sy1 02 32 11.8285501656 +00 08 02.448836844   19.41 19.22     ~ 35 0
42 1WGA J0234.2+0057 Sy1 02 34 14.5731096312 +00 57 07.963861500   19.92 19.49     ~ 14 0
43 2SLAQ J024037.88+001118.9 Sy1 02 40 37.8828726912 +00 11 18.876017148   19.31 19.07     ~ 40 0
44 PB 6882 Sy1 02 46 51.9154329792 -00 59 30.996862872   17.24 17.05     ~ 74 0
45 2SLAQ J025501.18+001745.4 Sy1 02 55 01.1888741928 +00 17 45.432179448   19.79 19.42     ~ 14 0
46 LEDA 138575 Sy1 03 00 31.3085442336 +00 53 57.173241336   19.60 19.28     ~ 17 0
47 KUG 0301+002 Sy1 03 04 17.7801924768 +00 28 27.281024868   17.86 17.38     ~ 66 0
48 PB 7009 Sy1 03 06 39.5824276346 +00 03 43.161393991   18.00 17.54     ~ 79 0
49 2MASS J03142746-0111523 Sy1 03 14 27.4623857040 -01 11 52.323386712   18.10 17.98     ~ 36 0
50 2SLAQ J031542.64+001228.7 Sy1 03 15 42.6450804432 +00 12 28.753760952   19.09 18.51     ~ 13 0
51 2SLAQ J031630.78-010303.5 Sy1 03 16 30.7894729056 -01 03 03.589978716   19.70 19.21     ~ 26 0
52 2MASS J03225551+0018595 Sy1 03 22 55.4957453208 +00 18 59.855397408   18.40 18.10     ~ 30 0
53 2MASS J03233765+0035555 Sy1 03 23 37.6453274784 +00 35 55.617177516   18.39 18.11     ~ 37 0
54 2MASS J03260676+0114298 Sy1 03 26 06.7621206624 +01 14 29.708107116   19.55 18.66     ~ 22 0
55 SDSS J033027.20+005433.8 Sy1 03 30 27.2096822856 +00 54 33.798481524   18.8 19.19 18.3   ~ 34 0
56 SDSS J033059.05+010952.1 Sy1 03 30 59.0542570752 +01 09 52.095050028   20.01 19.72     ~ 26 0
57 2MASS J03342942+0006112 Sy1 03 34 29.4420437304 +00 06 10.966769712   18.11 17.79     ~ 39 0
58 SDSS J033854.25+005339.6 Sy1 03 38 54.2549695608 +00 53 39.720663168   20.41 19.89     ~ 11 0
59 2SLAQ J033923.65-002310.2 Sy1 03 39 23.6632915248 -00 23 10.300964604   19.98 19.71     ~ 26 0
60 2SLAQ J034131.94-000932.9 Sy1 03 41 31.9489494456 -00 09 32.987733696   20.26 19.70     ~ 10 0
61 SDSS J034326.51+003915.2 Sy1 03 43 26.5199238504 +00 39 15.267801960   19.30 19.02     ~ 31 0
62 2MASS J03443002-0058428 Sy1 03 44 30.0357978744 -00 58 42.744759708   19.88 19.41     ~ 26 0
63 QSO J0948+0022 Bla 09 48 57.32005819 +00 22 25.5596984   18.85 18.61 18.17   ~ 350 2
64 2QZ J095859.7+004718 Sy1 09 58 59.7976692432 +00 47 18.883443804   19.17 18.88     ~ 20 0
65 IRAS F10015-0018 Sy1 10 04 04.998 -00 32 53.44   18.89 18.45 18.835   ~ 33 0
66 2MASS J10131485-0052338 Sy1 10 13 14.8587569952 -00 52 33.636789840   18.12 17.86     ~ 40 0
67 2QZ J102059.7+010034 Sy1 10 20 59.7393129456 +01 00 34.649977464   18.68 18.53     ~ 34 0
68 2SLAQ J102450.52-002102.4 Sy1 10 24 50.5191972888 -00 21 02.381476284   19.33 18.94     ~ 34 0
69 2QZ J103031.4-001903 Sy1 10 30 31.4116744728 -00 19 02.641904904   19.73 19.50     ~ 29 0
70 2QZ J103222.5-000346 Sy1 10 32 22.5780877416 -00 03 45.639867780   19.49 19.34     ~ 29 0
71 2MASS J10345728-0102091 Sy1 10 34 57.2884697016 -01 02 09.017978352   18.07 17.79     ~ 35 0
72 2QZ J104132.3-003513 Sy1 10 41 32.3566175520 -00 35 12.167465496   19.68 19.33     ~ 16 0
73 2dFGRS TGN295Z179 Sy1 10 42 10.0271459304 -00 18 14.731351416   18.78 18.36 18.419   ~ 20 0
74 2MASX J10423015+0102232 Sy1 10 42 30.1346306832 +01 02 23.817524064   19.26 18.81 17.160   ~ 18 0
75 2QZ J104331.4-010733 Sy1 10 43 31.5063527400 -01 07 32.845453248   19.71 19.32     ~ 25 0
76 2QZ J104449.2+000300 Sy1 10 44 49.2825851832 +00 03 01.283569632   19.75 19.47     ~ 30 0
77 2QZ J105932.4-004355 Sy1 10 59 32.5199889216 -00 43 54.866331552   19.67 19.28     ~ 15 0
78 2QZ J110312.8+000011 Sy1 11 03 12.8213240112 +00 00 12.505441752   19.37 19.03     ~ 27 0
79 2QZ J111022.4-005545 Sy1 11 10 22.3912501584 -00 55 44.544990792   19.19 18.81     ~ 26 0
80 2QZ J111307.7+003209 Sy1 11 13 07.7415251760 +00 32 10.509713304   19.26 18.96     ~ 26 0
81 2QZ J113102.2-010122 Sy1 11 31 02.2778799552 -01 01 22.066779108   19.96 19.64     ~ 14 0
82 LBQS 1133+0039 Sy1 11 35 41.2038764472 +00 22 35.347155996   17.78 17.53 17.650   ~ 43 1
83 LEDA 139711 Sy1 11 50 23.5884070464 +00 08 39.136672212   18.84 18.53     ~ 29 0
84 2QZ J115306.9-004513 Sy1 11 53 06.9462983448 -00 45 12.846303828   19.81 19.43     ~ 27 0
85 2QZ J115412.7+010132 Sy1 11 54 12.7658939328 +01 01 33.465017748   19.31 18.98     ~ 29 0
86 2dFGRS TGN448Z142 Sy1 11 55 33.5043170568 +01 07 30.522051516   18.86 18.49 17.895   ~ 28 0
87 2QZ J115755.4+001703 Sy1 11 57 55.4715531312 +00 17 04.046502768   18.72 18.47     ~ 39 0
88 2QZ J115832.8+005138 Sy1 11 58 32.8132078992 +00 51 39.135283956   19.33 18.98     ~ 36 0
89 2QZ J121415.1+005510 Sy1 12 14 15.1611021648 +00 55 11.551902564   18.70 18.65     ~ 34 0
90 2QZ J122102.9-000734 Sy1 12 21 02.9547873408 -00 07 33.691415340   19.20 18.75     ~ 26 0
91 2dFGRS TGN320Z246 Sy1 12 24 32.4009222648 -00 27 31.401786564   18.24 17.97 17.283   ~ 23 0
92 2QZ J124519.7-005231 Sy1 12 45 19.7309374584 -00 52 30.516241080   19.78 19.35     ~ 14 0
93 2E 1251.0-0031 Sy1 12 53 37.3533193728 -00 48 09.587013840   18.65 18.53     ~ 41 0
94 2QZ J125943.5+010254 Sy1 12 59 43.5959834136 +01 02 55.085858520   18.71 18.47     ~ 32 0
95 LEDA 44752 Sy1 13 00 23.2198807824 -00 54 29.807359344   18.43 18.16     ~ 23 0
96 2QZ J130707.7-002543 Sy1 13 07 07.7124546744 -00 25 42.898919016   19.00 18.90     ~ 32 0
97 2QZ J130855.1+004503 Sy1 13 08 55.1841535080 +00 45 04.013061084   19.51 19.23     ~ 25 0
98 2QZ J131108.4+003151 Sy1 13 11 08.4809919456 +00 31 51.771187812   18.14 17.98     ~ 44 0
99 2QZ J132231.1-001124 Sy1 13 22 31.1210862264 -00 11 24.659103588   19.30 18.82     ~ 22 0
100 2QZ J133031.4-002818 Sy1 13 30 31.4007831336 -00 28 18.865455780   19.93 19.47     ~ 12 0
101 2QZ J133741.7-005549 Sy1 13 37 41.7625769112 -00 55 48.074148660   19.80 19.26     ~ 13 0
102 2MASS J13590801+0027320 Sy1 13 59 08.0074165656 +00 27 31.904741160   19.03 18.60 18.043   ~ 27 0
103 2MASS J14123467-0035001 Sy1 14 12 34.6738981320 -00 35 00.032021628   18.06 17.58 18.161   ~ 36 0
104 2QZ J141519.4-003022 Sy1 14 15 19.5010885704 -00 30 21.578076648   19.26 18.96     ~ 36 1
105 GAMA 544256 Sy1 14 18 20.3252947752 -00 59 53.802059460   19.77 19.23     ~ 15 0
106 2QZ J142441.2-000727 Sy1 14 24 41.2096208712 -00 07 27.155368524   18.66 18.35 17.8   ~ 39 0
107 2dFGRS TGN345Z119 Sy1 14 30 30.2153396304 -00 11 15.084859128   19.44 18.92     ~ 25 0
108 2SLAQ J143230.99-005229.0 Sy1 14 32 30.9896090208 -00 52 28.957984212   19.65 19.23     ~ 33 0
109 LBQS 1433-0016 Sy1 14 36 24.8146128744 -00 29 05.335284696   18.50 18.13 18.622   ~ 42 0
110 2QZ J144735.2-003231 Sy1 14 47 35.2534663320 -00 32 30.529420584   19.71 19.23     ~ 14 0
111 2QZ J144913.5+002406 Sy1 14 49 13.5050189496 +00 24 06.902791560   19.49 19.19     ~ 30 0
112 2MASX J14493270+0022363 Sy1 14 49 32.7075649776 +00 22 36.300242640   18.38 17.95 16.972   ~ 27 0
113 2SLAQ J145123.02-000625.9 Sy1 14 51 23.0207809320 -00 06 25.948540764   19.09 18.57     ~ 25 0
114 2SLAQ J145437.84-003706.7 Sy1 14 54 37.8397348512 -00 37 06.673197000   19.43 19.24     ~ 25 0
115 2SLAQ J150629.24+003543.2 Sy1 15 06 29.2381017120 +00 35 43.223753184   18.87 18.65     ~ 25 0
116 2MASX J15131239+0019380 Sy1 15 13 12.4068110112 +00 19 37.554659868   19.26 18.64     ~ 14 0
117 2MASS J15195656+0016147 Sy1 15 19 56.5690881744 +00 16 14.608296048   18.18 17.84     ~ 26 0
118 SDSS J153243.67-004342.5 Sy1 15 32 43.6686501216 -00 43 42.512271996   19.54 19.22     ~ 21 0
119 2MASS J15391116+0026008 Sy1 15 39 11.1539 +00 26 00.800   18.90 18.47     ~ 28 0
120 SDSS J164907.62+642422.2 Sy1 16 49 07.6351202568 +64 24 22.201710012   19.76 19.24     ~ 14 0
121 2MASS J16502288+6421367 Sy1 16 50 22.8647278920 +64 21 36.150302016   19.92 19.44     ~ 21 0
122 2MASS J16533869+6340104 Sy1 16 53 38.6815074528 +63 40 10.625320704   18.13 17.93     ~ 36 0
123 [VV2006] J165537.8+624738 Sy1 16 55 37.7882890152 +62 47 39.046885260   19.21 19.01     ~ 29 0
124 SDSS J165633.88+641043.5 Sy1 16 56 33.8712408936 +64 10 43.594449816   19.61 19.22     ~ 11 0
125 1WGA J1656.9+6300 Sy1 16 56 58.3641285888 +63 00 51.130441548   19.32 18.96     ~ 16 0
126 2MASS J16590544+6339225 Sy1 16 59 05.4661147512 +63 39 23.617010340   18.93 18.67     ~ 27 0
127 CXO J170546.9+631058 Sy1 17 05 46.9096269384 +63 10 59.151946944   18.80 18.41     ~ 18 0
128 1RXS J170813.4+601502 Sy1 17 08 12.2821498680 +60 15 12.635468460   18.26 17.66     ~ 20 0
129 [VV2006] J170956.0+573225 Sy1 17 09 56.0078464176 +57 32 25.416379032   18.56 18.42     ~ 31 0
130 2MASS J17103321+5844566 Sy1 17 10 33.2074170216 +58 44 56.833678680   19.68 19.15     ~ 35 0
131 RX J1712.1+5847 Sy1 17 12 07.4351879616 +58 47 54.448393200   18.29 18.12 17.76   ~ 63 1
132 2MASS J17154094+5606548 Sy1 17 15 40.9316460408 +56 06 54.956070108   19.08 18.78     ~ 26 0
133 2MASS J17182899+5734222 Sy1 17 18 28.9899945768 +57 34 22.340993232   18.06 17.67     ~ 26 0
134 1RXS J172008.7+561707 Sy1 17 20 07.9551710832 +56 17 10.671837216   19.84 19.60     ~ 23 0
135 2MASS J17220601+5654518 Sy1 17 22 06.0278806104 +56 54 51.664893732   18.79 18.48     ~ 67 1
136 1RXS J172755.7+581206 Sy1 17 27 56.8548061128 +58 12 05.931732384   19.80 19.56     ~ 22 0
137 2MASS J17280067+5453029 Sy1 17 28 00.6720252048 +54 53 02.791227084   18.78 18.44     ~ 27 0
138 [VV2006] J172823.6+630934 Sy1 17 28 23.6019121200 +63 09 33.816814380   19.05 18.83     ~ 28 0
139 [VV2006] J173404.9+542355 Sy1 17 34 04.8470474736 +54 23 55.160028780   19.41 19.21     ~ 23 0
140 2MASS J17372114+5503218 Sy1 17 37 21.1475602512 +55 03 21.729321180   19.11 18.66     ~ 27 0
141 2SLAQ J232525.52+001136.8 Sy1 23 25 25.5293101200 +00 11 36.933396684   19.73 19.51     ~ 35 0
142 2MASS J23303295+0000263 Sy1 23 30 32.9548511352 +00 00 26.357910012   18.44 17.91 17.76 17.28 ~ 15 0
143 PB 5431 Sy1 23 31 49.4869508232 +00 07 19.492201164   19.27 18.96 18.45 18.26 ~ 38 0
144 2SLAQ J233853.83+004812.5 Sy1 23 38 53.8369187904 +00 48 12.460483188   18.63 18.19     ~ 18 0
145 SDSS J234050.52+010635.4 Sy1 23 40 50.5295035272 +01 06 35.508558780   19.74 19.38     ~ 25 0
146 PB 5501 Sy1 23 41 41.5078531992 -00 38 06.715249260   18.51 18.08     ~ 42 0
147 1RXS J234151.4-004337 Sy1 23 41 50.8157299968 -00 43 29.137197792   20.22 19.66     ~ 17 0
148 SDSS J234216.73+000224.2 Sy1 23 42 16.7391641232 +00 02 24.212812344   20.24 19.81     ~ 9 0
149 2SLAQ J234229.45-004731.4 Sy1 23 42 29.4649833264 -00 47 31.471065456   20.20 19.89     ~ 11 0
150 2SLAQ J234725.29-010643.8 Sy1 23 47 25.2940878624 -01 06 43.802107344   19.06 18.67     ~ 20 0

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