2003AJ....125....1G

Query : 2003AJ....125....1G

2003AJ....125....1G - Astron. J., 125, 1-12 (2003/January-0)

Variability-selected quasars in MACHO project Magellanic cloud fields.

GEHA M., ALCOCK C., ALLSMAN R.A., ALVES D.R., AXELROD T.S., BECKER A.C., BENNETT D.P., COOK K.H., DRAKE A.J., FREEMAN K.C., GRIEST K., KELLER S.C., LEHNER M.J., MARSHALL S.L., MINNITI D., NELSON C.A., PETERSON B.A., POPOWSKI P., PRATT M.R., QUINN P.J., STUBBS C.W., SUTHERLAND W., TOMANEY A.B., VANDEHEI T. and WELCH D.L.

Abstract (from CDS):

We present 47 spectroscopically confirmed quasars discovered behind the Magellanic Clouds identified via photometric variability in the MACHO database. Thirty-eight quasars lie behind the Large Magellanic Cloud and nine behind the Small Magellanic Cloud, more than tripling the number of quasars previously known in this region. The quasars cover the redshift interval 0.2<z<2.8 and have apparent mean magnitudes 16.6≤V{d1}≤20.1. We discuss the details of quasar candidate selection based on time variability in the MACHO database and present results of spectroscopic follow-up observations. Our follow-up detection efficiency was 20%; the primary contaminants were emission-line Be stars in Magellanic Clouds. For the 47 quasars discovered behind the Magellanic Clouds, plus an additional 12 objects previously identified in this region, we present 7.5 yr MACHO V- and R-band light curves with average sampling times of 2-10 days.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Magellanic Clouds - Galaxies: Quasars: General

Simbad objects: 62

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Number of rows : 62
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 [VV2006] J004715.8-724112 QSO 00 47 15.961 -72 41 11.37     19.52     ~ 9 0
2 [VV2006] J004934.4-721308 QSO 00 49 34.5305 -72 13 07.869     19.28     ~ 9 0
3 [VV2006] J005116.9-721651 QSO 00 51 16.9407898844 -72 16 51.533634355     18.03   17.546 ~ 12 0
4 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
5 [VV2006] J005534.7-722834 QSO 00 55 34.64 -72 28 34.4     18.70   18.28 ~ 16 0
6 [VV2006] J005559.6-725244 QSO 00 55 59.6712948576 -72 52 45.698110248   21.6 19.17 20.9   ~ 9 0
7 [VV2006] J010127.8-724614 QSO 01 01 28.0169634552 -72 46 14.127302784     19.87   19.31 ~ 10 0
8 [VV2006] J010214.4-731626 QSO 01 02 14.4 -73 16 26   19.6 20.3 18.2   ~ 9 0
9 [VV2006] J010234.7-725422 QSO 01 02 34.7415419784 -72 54 24.365368080   18.688 18.346   17.641 ~ 13 0
10 [VV2006] J010721.7-724846 QSO 01 07 21.6334028544 -72 48 45.612148392   19.216 18.970   18.28 ~ 12 0
11 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
12 [VV2006] J044611.2-720509 QSO 04 46 10.9481119032 -72 05 10.029043320     17.60     ~ 17 1
13 [KWV2015] J045356.54-694035.8 Sy1 04 53 56.5673598024 -69 40 35.744961612 18.804 19.328 19.04   18.09 ~ 12 0
14 OGLE LMC132.1 2375 Sy1 04 56 14.320 -67 39 09.30 18.545 19.318 19.33   18.42 ~ 12 0
15 [VV2006] J050017.6-693215 QSO 05 00 17.3986247741 -69 32 15.914457195   19.429 18.63   18.01 ~ 11 0
16 [VV2006] J050054.0-664401 QSO 05 00 53.9643311184 -66 43 59.917398492     19.01   18.36 ~ 11 0
17 [VV2006] J050146.7-673241 Sy1 05 01 46.7365947984 -67 32 40.153037028 17.603 18.413 18.10 18.030 17.50 ~ 13 0
18 [VV2006] J050253.7-672546 QSO 05 02 53.730 -67 25 45.30 18.461 18.932 18.67   17.68 ~ 14 0
19 6dFGS gJ050304.0-663346 Sy1 05 03 03.968 -66 33 45.60   13.9   14.5   ~ 43 0
20 [VV2006] J050436.0-662417 QSO 05 04 36.0092765784 -66 24 15.870839076 17.636 18.340 18.056 17.790 17.331 ~ 11 0
21 [VV2003c] J050736.5-684751 Sy1 05 07 36.440 -68 47 51.60     19.50   18.99 ~ 17 0
22 [VV2006] J050830.6-670230 QSO 05 08 30.6310127352 -67 02 28.797621072     18.90   18.32 ~ 10 0
23 [VV2006] J050833.3-685427 Sy1 05 08 33.2121665683 -68 54 27.378532695   19.240 19.004   18.499 ~ 15 0
24 [VV2006] J050846.0-700501 QSO 05 08 46.0321612656 -70 04 59.930796000     19.88   19.24 ~ 11 0
25 [VV2006] J050854.1-673735 QSO 05 08 54.1583915952 -67 37 34.291294752     20.06     ~ 8 0
26 LEDA 3095714 Sy1 05 09 15.3760431624 -69 54 17.308029168 16.723 18.454 17.345   16.505 ~ 17 0
27 MACHO 9.4882.332 Sy1 05 10 23.080 -70 07 35.50 18.289 19.522 19.07   18.40 ~ 12 0
28 [VV2006] J051032.3-692716 QSO 05 10 32.420 -69 27 15.80     19.04   18.25 ~ 14 0
29 [VV2006] J051140.7-710032 QSO 05 11 40.7068567992 -71 00 32.742264204     20.06   19.24 ~ 9 0
30 [VV2006] J051259.6-703024 QSO 05 12 59.550 -70 30 23.50     19.63   19.00 ~ 10 0
31 [VV2006] J051412.0-702025 QSO 05 14 12.140 -70 20 26.00 18.450 18.785 18.57   17.94 ~ 14 0
32 MACHO 37.5584.159 QSO 05 15 03.7 -71 44 24           ~ 6 0
33 [VV2006] J051523.0-705806 QSO 05 15 22.840 -70 58 06.20 18.251 19.021 18.688   18.253 ~ 10 0
34 [VV2006] J051536.1-705401 QSO 05 15 36.0668752272 -70 54 01.277137440     18.86   18.01 ~ 12 0
35 [VV2006] J051626.3-694818 QSO 05 16 26.320 -69 48 19.20 18.171 18.655 18.47   17.88 ~ 15 0
36 2MASS J05162885-6837022 Sy1 05 16 28.8102 -68 37 02.540     17.29   16.74 ~ 16 0
37 [VV2006] J051636.8-663436 QSO 05 16 36.8087531376 -66 34 35.967676116     18.20     ~ 10 0
38 2E 1250 Sy1 05 17 16.950 -70 44 02.00 19.033 19.631 18.96   18.25 ~ 22 0
39 [VV2006] J051852.0-660956 QSO 05 18 51.9609929904 -66 09 56.367643752     19.85     ~ 8 0
40 [VV2006] J051928.0-654950 QSO 05 19 28.0386189912 -65 49 50.303204760     19.33     ~ 8 0
41 MACHO 63.6643.393 AGN 05 20 56.5 -65 39 05     19.65     ~ 9 0
42 [VV2006] J052056.9-702452 QSO 05 20 56.9752810165 -70 24 52.724008711 17.626 18.152 18.21   17.62 ~ 14 0
43 [VV2006] J052247.2-710130 QSO 05 22 47.1925789752 -71 01 30.816609420     19.44   18.57 ~ 13 0
44 [VV2006] J052247.7-704734 QSO 05 22 47.6815442856 -70 47 34.870097220     18.98   18.20 ~ 10 0
45 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
46 LEDA 88408 Sy1 05 24 02.262 -70 11 08.63 17.553 18.316 18.27 17.550 17.23 ~ 30 0
47 [VV2006] J052514.3-655445 QSO 05 25 14.4372126336 -65 54 45.829935756     18.72     ~ 12 0
48 [VV2006] J052716.2-693933 QSO 05 27 16.150 -69 39 33.90     19.48   19.16 ~ 10 0
49 [VV2006] J053007.9-671027 QSO 05 30 07.9 -67 10 27     19.33     ~ 8 0
50 [VV2006] J053008.7-655124 QSO 05 30 08.9742673992 -65 51 24.394499712     20.10     ~ 9 0
51 [VV2006] J053009.1-660701 QSO 05 30 09.1133499120 -66 07 00.984244872     18.96     ~ 8 0
52 [VV2006] J053026.8-664855 QSO 05 30 26.7351988512 -66 48 53.217890280     18.94     ~ 9 0
53 2E 1337 Q? 05 31 31.610 -71 29 47.00 19.055 19.912 19.571   18.122 ~ 21 0
54 LEDA 3095722 Sy1 05 31 59.6922545184 -69 19 51.461379588   18.9 18.96   18.18 ~ 19 0
55 2XMM J053600.4-704127 Sy1 05 36 00.480 -70 41 27.70     19.41   18.43 ~ 17 0
56 2E 1571 BLL 05 47 45.1498948485 -67 45 05.091266853   20.2 20.2     ~ 25 1
57 1RXS J054750.5-672803 Bla 05 47 50.1968324112 -67 28 01.529877612 15.915 16.737 16.283   15.899 ~ 26 1
58 MACHO 30.11301.499 Sy1 05 49 41.600 -69 44 15.10     19.95   19.16 ~ 10 0
59 MACHO 28.11400.609 SyG 05 50 31.030 -71 09 57.10   19.9 19.65   19.24 ~ 16 0
60 RX J0550.6-6637 Sy1 05 50 33.5027826816 -66 36 52.665001344   17.0 17.0   19.229 ~ 23 0
61 QSO B0557-672 QSO 05 57 21.6241801392 -67 13 37.064984340     17.5     ~ 21 0
62 PMN J0602-6830 QSO 06 02 34.3252383975 -68 30 41.378721296     18.67   18.39 ~ 20 1

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