1995PASP..107..667S

Query : 1995PASP..107..667S

1995PASP..107..667S - Publ. Astron. Soc. Pac., 107, 667-671 (1995/July-0)

BVRI photometry of candidate EUV ROSAT sources.

SCHWARTZ R.D., DAWKINS D., FINDLEY D. and CHEN D.

Abstract (from CDS):

We report BVRI photometry of stars in 12 selected extreme ultraviolet ROSAT fields with the goal of obtaining firm identifications of the optical counterparts to the ROSAT sources. We present BVRI magnitudes and finder charts for 10 optical counterparts identified previously in a spectroscopic survey. Among the 10 sources are 7 probable white dwarfs, 2 dwarf Ke stars, and one cataclysmic variable. One of the white dwarf sources (RE J2207+252) appears to reside in a visual binary system with a K4V companion. Two sources (RE J1853+503 and RE J2117+484) have yet to be identified with visible stars, although our photometry suggests some candidates for future spectroscopic investigation.

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Journal keyword(s):

Nomenclature: Table 2: [SDF95] RE JHHMM+DDd NN N=54

Simbad objects: 66

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Number of rows : 66
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 SBSS 1040+493 WD* 10 43 11.4236321376 +49 02 23.528957028           DA1.0 56 0
2 BD+23 2581 ** 13 32 41.6858519142 +22 30 06.809284189   10.65 9.622 9.0 8.381 KV:e 39 0
3 SBSS 1424+503 WD* 14 26 44.2072550472 +50 06 25.167764052           DA1.6 30 0
4 HS 1440+7518 WD* 14 40 05.1341163672 +75 05 33.787957776   15.1 15.3 15.2   DA1 59 0
5 RX J1629.0+7804 WD* 16 29 10.278576 +78 04 39.91620   12.74 12.95 13.03   DA1.2 86 0
6 V* EY Dra BY* 18 16 16.7795336184 +54 10 21.732232332   13.69 11.84     dM1.5e 75 0
7 RX J1820.5+5805 WD* 18 20 29.7868783008 +58 04 40.963525860   13.8 14.23     DA1.0 41 0
8 RE J1853+503 X 18 53 16.1 +50 32 40           ~ 3 0
9 V* HU Aqr CV* 21 07 58.1944529400 -05 17 40.557671916   16.198 15.814 14.891   D+M4V 292 1
10 RE J2117+484 X 21 17 24.7 +48 46 44           ~ 3 0
11 RX J2207.7+2520 WD* 22 07 45.0051959952 +25 20 22.045074144     14.4 14.88   DA1.9 31 0
12 Lan 23 WD* 22 49 52.3672810920 +58 34 32.038383144 12.80 13.98 14.19 14.78   DA.9 47 0
13 [SDF95] RE J1440+750 2 * ~ ~   13.20 12.26     ~ 1 0
14 [SDF95] RE J1440+750 3 * ~ ~   14.62 13.76     ~ 1 0
15 [SDF95] RE J1629+780 1 * ~ ~   12.95 13.03     ~ 1 0
16 [SDF95] RE J1629+780 2 * ~ ~   15.67 14.92     ~ 1 0
17 [SDF95] RE J1629+780 3 * ~ ~   14.54 13.92     ~ 1 0
18 [SDF95] RE J1816+541 1 * ~ ~   13.28 11.83     ~ 1 0
19 [SDF95] RE J1816+541 2 * ~ ~   13.92 13.35     ~ 1 0
20 [SDF95] RE J1816+541 3 * ~ ~   13.62 13.00     ~ 1 0
21 [SDF95] RE J1820+580 1 * ~ ~   13.63 13.93     ~ 1 0
22 [SDF95] RE J1820+580 2 * ~ ~   16.75 15.66     ~ 1 0
23 [SDF95] RE J1820+580 3 * ~ ~   16.16 15.36     ~ 1 0
24 [SDF95] RE J1853+503 1 * ~ ~   17.54 16.74     ~ 1 0
25 [SDF95] RE J1853+503 2 * ~ ~   16.15 15.50     ~ 1 0
26 [SDF95] RE J1853+503 3 * ~ ~   17.52 16.15     ~ 1 0
27 [SDF95] RE J1853+503 4 * ~ ~   17.65 16.95     ~ 1 0
28 [SDF95] RE J1853+503 5 * ~ ~   17.62 17.06     ~ 1 0
29 [SDF95] RE J1853+503 6 * ~ ~   11.16 10.66     ~ 1 0
30 [SDF95] RE J2107-051 1 * ~ ~           ~ 1 0
31 [SDF95] RE J2107-051 2 * ~ ~   15.80 15.19     ~ 1 0
32 [SDF95] RE J2107-051 3 * ~ ~   16.06 15.19     ~ 1 0
33 [SDF95] RE J2117+484 1 * ~ ~   15.01 13.98     ~ 1 0
34 [SDF95] RE J2117+484 2 * ~ ~   15.75 14.48     ~ 1 0
35 [SDF95] RE J2117+484 3 * ~ ~   18.58 17.11     ~ 1 0
36 [SDF95] RE J2117+484 4 * ~ ~   18.17 17.27     ~ 1 0
37 [SDF95] RE J2117+484 5 * ~ ~           ~ 1 0
38 [SDF95] RE J2117+484 6 * ~ ~   17.92 16.75     ~ 1 0
39 [SDF95] RE J2117+484 7 * ~ ~   19.10 17.29     ~ 1 0
40 [SDF95] RE J2117+484 8 * ~ ~   18.40 17.47     ~ 1 0
41 [SDF95] RE J2117+484 9 * ~ ~   18.15 16.78     ~ 1 0
42 [SDF95] RE J1043+490 1 * ~ ~   15.76 16.11     ~ 1 0
43 [SDF95] RE J2117+484 11 * ~ ~   18.74 17.06     ~ 1 0
44 [SDF95] RE J2117+484 12 * ~ ~   17.93 16.65     ~ 1 0
45 [SDF95] RE J2117+484 13 * ~ ~   18.75 18.12     ~ 1 0
46 [SDF95] RE J2117+484 14 * ~ ~   17.22 15.90     ~ 1 0
47 [SDF95] RE J2207+252 1 * ~ ~   14.37 14.47     ~ 1 0
48 [SDF95] RE J2207+252 2 * ~ ~   12.19 11.13     ~ 1 0
49 [SDF95] RE J2207+252 3 * ~ ~   16.21 15.57     ~ 1 0
50 [SDF95] RE J2207+252 4 * ~ ~   16.80 15.94     ~ 1 0
51 [SDF95] RE J2207+252 5 * ~ ~   13.54 13.22     ~ 1 0
52 [SDF95] RE J2249+583 1 * ~ ~   13.97 14.26     ~ 1 0
53 [SDF95] RE J2249+583 2 * ~ ~   15.73 15.04     ~ 1 0
54 [SDF95] RE J2249+583 3 * ~ ~   16.61 15.58     ~ 1 0
55 [SDF95] RE J2117+484 10 * ~ ~   18.34 16.96     ~ 1 0
56 [SDF95] RE J1043+490 2 * ~ ~   12.95 12.38     ~ 1 0
57 [SDF95] RE J1043+490 3 * ~ ~   16.38 16.03     ~ 1 0
58 [SDF95] RE J1043+490 4 * ~ ~   15.44 13.93     ~ 1 0
59 [SDF95] RE J1043+490 5 * ~ ~   14.95 13.47     ~ 1 0
60 [SDF95] RE J1332+223 1 * ~ ~   10.79 9.72     ~ 1 0
61 [SDF95] RE J1332+223 2 * ~ ~   10.08 9.59     ~ 1 0
62 [SDF95] RE J1426+500 1 * ~ ~   13.85 13.42     ~ 1 0
63 [SDF95] RE J1426+500 2 * ~ ~   17.00 15.70     ~ 1 0
64 [SDF95] RE J1426+500 3 * ~ ~   13.84 13.16     ~ 1 0
65 [SDF95] RE J1426+500 4 * ~ ~   16.05 15.26     ~ 1 0
66 [SDF95] RE J1440+750 1 * ~ ~   15.04 15.32     ~ 1 0

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