2004A&A...419..285F

Query : 2004A&A...419..285F

2004A&A...419..285F - Astronomy and Astrophysics, volume 419285-290 (2004/5-3)

Infrared and visual lunar occultations measurements of stellar diameters and new binary stars detections at the Calar Alto 1.5m telescope.

FORS O., RICHICHI A., NUNEZ J. and PRADES A.

Abstract (from CDS):

We present a program of routine lunar occultations, at optical and near-IR wavelengths, recently started at the 1.5m Spanish telescope at the Calar Alto Observatory. Both a CCD and an infrared array detector are used. The program is aimed mainly at the detection and investigation of binary systems, although results in other areas of stellar research are also anticipated. Occultations are reported for a total of 40 stars. Among these, SAO 164567, SAO 78258 and AG+24 788 have been discovered to be binaries, with projected separations as small as 0.006". Furthermore, binarity is suspected in the case of SAO 78119 and SAO 79251. Additionally, the angular diameter of the late-type giant 30 Psc and of the infrared star V349 Gem have been accurately measured, the latter for the first time. We finally evaluate the instrumentation performance in terms of the limiting magnitude and angular resolution, and discuss applications to larger telescopes.

Abstract Copyright: ∼

Journal keyword(s): astrometry - occultations - stars: binaries: close - stars: binaries: visual - instrumentation: detectors

Simbad objects: 40

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Number of rows : 40
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 HD 224829 * 00 01 02.7591323184 -05 50 06.004901256   8.21 7.79     F5IV 24 0
2 HD 224840 * 00 01 07.3274319288 -05 52 27.643819584   8.93 7.64     K3III 13 0
3 * 30 Psc LP? 00 01 57.6194717328 -06 00 50.654004048 7.88 6.04 4.41 2.85 1.44 M3III 152 0
4 HD 251971 * 06 07 56.5404664656 +23 40 13.509444504 10.06 9.63 9.10     F0 17 0
5 HD 42768 * 06 13 39.9722055192 +23 44 42.384639048   9.41 8.10     K0 15 0
6 BD+23 1258 * 06 14 09.1833991368 +23 57 16.684579692   8.59 7.87     G5 6 0
7 * 8 Gem * 06 16 19.0467750168 +23 58 12.107696628   6.984 6.075     G8III 42 0
8 * 9 Gem s*b 06 16 58.7058631680 +23 44 27.284070336 6.31 6.70 6.25 5.78 5.38 B3Iab 253 0
9 HD 43560 S*? 06 17 56.0971075200 +23 52 51.757408776   10.12 8.38     M3 10 0
10 HD 43647 * 06 18 22.3420434744 +23 48 57.670553016   9.42 8.20     K0 7 0
11 DO 12097 * 06 18.9 +23 50           K5 2 0
12 * 10 Gem * 06 18 54.4267493568 +23 36 11.817229680 8.030 7.450 6.550     G5 21 0
13 IRAS 06175+2347 C* 06 20 36.4767182760 +23 46 29.642053836   17.42 13.48 13.97   C 17 0
14 HD 44108 SB* 06 20 59.5161995376 +23 59 15.186637680   8.78 8.23     G0 14 0
15 HD 44251 * 06 21 49.1882554632 +23 45 38.282149152   8.63 7.29     K0 7 0
16 HD 54616 PM* 07 10 29.5822160160 +24 06 29.330981892   8.42 7.95     F5 29 0
17 BD+24 1550 * 07 11 31.5560355216 +24 11 20.463333540   11.72 10.25     K0 4 0
18 * 48 Gem * 07 12 26.3762241744 +24 07 42.938002164 6.30 6.21 5.85     F5III-IV 77 0
19 BD+24 1564 * 07 12 52.8081940104 +24 05 52.313802108   9.96 9.22     G5 5 0
20 BD+24 1578 * 07 14 33.2520714504 +24 00 27.514352016   9.13 8.67     F5 4 0
21 HD 55801 * 07 15 29.6455153392 +23 51 23.810819616   8.80 7.90     G5 14 0
22 HD 56077 PM* 07 16 36.3316998264 +23 52 59.166646356   8.49 8.05     F8 9 0
23 BD+24 1598 * 07 17 43.0773067656 +23 59 47.350513356   9.81 8.74     K0 7 0
24 HD 56462 ** 07 18 03.9586606874 +24 04 38.876818676           F5 17 0
25 BD+24 1613 * 07 18 57.0541002840 +23 56 42.682071696   11.18 10.24     G0 4 0
26 BD+24 1625 * 07 20 44.6998419648 +23 45 48.451340772   11.35 10.34     K0 4 0
27 HD 57107 * 07 20 46.1896636152 +23 37 50.513637000   8.44 8.33     A2 16 0
28 BD+24 1632 * 07 21 47.9811439056 +23 51 06.943767948   10.60 9.47     K2 4 0
29 BD+23 1703 * 07 24 25.5188837928 +23 24 59.069179728   10.69 9.28     K7 4 0
30 IRAS 07231+2349 LP* 07 26 08.8392742992 +23 43 52.836771792   13.24 10.96     ~ 5 0
31 HD 177242 * 19 04 48.8958495768 -24 48 56.965967928   9.70 8.25     K1/2III 12 0
32 HD 177426 * 19 05 37.3607204856 -24 40 30.656311428   8.68 7.32     K2III 7 0
33 HD 198261 * 20 49 50.4900070344 -21 53 36.141218952   9.59 8.61     G8III 7 0
34 HD 198521 * 20 51 27.8555908224 -21 55 17.124971196   10.67 9.48     K1/2III 12 0
35 HD 205992 * 21 39 31.2073408824 -19 12 58.166825220   8.91 8.51     F0III/IV 10 0
36 HD 206146 * 21 40 34.7693309904 -18 53 44.311896348   8.94 7.34     K5III 18 0
37 HD 213166 * 22 29 48.4819204080 -14 48 47.343695112   10.40 9.22     K1/2III 6 0
38 HD 213250 PM* 22 30 22.0247266392 -14 47 06.736997976   10.08 9.42     G2/3V 7 0
39 HD 213346 PM* 22 30 58.0857341448 -14 34 01.156844928   9.02 7.75     K0III 14 0
40 HD 219279 * 23 14 40.1726552976 -10 41 19.390875504   7.64 6.12     K4III 24 0

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