2005PASP..117..978R

Query : 2005PASP..117..978R

2005PASP..117..978R - Publ. Astron. Soc. Pac., 117, 978-990 (2005/September-0)

Absolute calibration of the infrared array camera on the Spitzer Space Telescope.

REACH W.T., MEGEATH S.T., COHEN M., HORA J., CAREY S., SURACE J., WILLNER S.P., BARMBY P., WILSON G., GLACCUM W., LOWRANCE P., MARENGO M. and FAZIO G.G.

Abstract (from CDS):

The Infrared Array Camera (IRAC) on the Spitzer Space Telescope is absolutely calibrated by comparing photometry of a set of A stars near the north ecliptic pole to predictions based on ground-based observations and a stellar atmosphere model. The brightness of point sources is calibrated to an accuracy of 3%, relative to models for A-star stellar atmospheres, for observations performed and analyzed in the same manner as for the calibration stars. This includes corrections for the location of the star in the array and the location of the centroid within the peak pixel. Long-term stability of the IRAC photometry was measured by monitoring the brightness of A dwarfs and K giants (near the north ecliptic pole) observed several times per month; the photometry is stable to 1.5% (rms) over a year. Intermediate-timescale stability of the IRAC photometry was measured by monitoring at least one secondary calibrator (near the ecliptic plane) every 12 hr while IRAC was in nominal operations; the intermediate-term photometry is stable, with a 1% dispersion (rms). One of the secondary calibrators was found to have significantly time-variable (5%) mid-infrared emission, with a period (7.4 days) matching the optical light curve; it is possibly a Cepheid variable.

Abstract Copyright: ∼

Journal keyword(s): Techniques: Photometric - Infrared: Stars

Nomenclature: Tables 1, 2: [RMC2005] KFNNTN N=15.

CDS comments: Tables 1, 2: objects HHMMSSs (J2000 coord.) are 2MASS JHHMMSSss+DDMMSSs with only abbreviated R.A.

Simbad objects: 65

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Number of rows : 65
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 4182 * 00 44 25.3718058816 +09 57 09.503944704   9.78 9.53     A2V 7 0
2 BD+20 417 PM* 02 32 14.5570127640 +20 49 06.958319052   11.62 10.63     K1.5III 6 0
3 BD+14 549 * 03 18 20.3308019640 +15 25 41.058033096   11.8 10.2     K2III 5 0
4 HD 244937 Pe* 05 34 54.2300226624 +30 03 27.573456924   10.31 9.85     A1V 9 0
5 HD 37725 * 05 41 54.3697767432 +29 17 50.954803440   8.12 8.31     A3V 24 0
6 * alf CMa SB* 06 45 08.91728 -16 42 58.0171 -1.51 -1.46 -1.46 -1.46 -1.43 A0mA1Va 1610 0
7 HD 55677 * 07 14 31.2896780664 +13 51 36.782107236   9.47 9.41     A4V 17 0
8 HD 55728 * 07 14 47.5542359568 +16 35 50.176852440   9.62 9.54     A2V 7 0
9 TYC 1396-1530-1 * 08 48 52.5830446872 +19 03 42.237274860   11.68 10.69 10.5   K0III 9 0
10 HD 77823 * 09 05 15.8533885584 +14 14 42.799140528   10.03 8.95     K1.5III 17 0
11 HD 89562 Em* 10 20 08.8713194424 +03 11 55.766468832   10.33 9.27     K1III 6 0
12 HD 90593 * 10 27 44.1613871784 +04 28 19.804985076   10.45 9.47     K0III 8 0
13 HD 99253 * 11 25 14.9387430192 -05 52 08.233089888   10.12 8.97     K1III 13 0
14 HD 109441 * 12 34 47.6630347128 -11 46 46.514880660   10.47 9.54     K0III 5 0
15 HD 113745 * 13 05 56.9924120760 -08 41 33.276120540   9.02 8.94     A0V 11 0
16 HD 131769 * 14 55 51.2419681584 -12 12 28.224701388   11.27 9.91     K0III 5 0
17 HD 135248 * 15 14 21.4423772496 -08 50 39.145024428   10.40 9.36     K0III 7 0
18 HD 137429 * 15 26 29.6808851424 -14 28 35.132001636   10.286 9.10     K0III 9 0
19 HD 145152 * 16 09 51.2326222728 -12 19 09.249535020   10.77 9.58     K1III 7 0
20 HD 155334 * 17 12 01.1918981016 -25 40 54.046539444   7.92 7.83     A1V 15 0
21 HD 156896 * 17 20 55.4670486024 -20 21 35.059015728   10.00 9.89     A0V 9 0
22 BD+61 1657 RB? 17 23 25.9759955592 +61 12 41.462720964   10.92 9.77     K0.5III 20 0
23 BD+60 1753 * 17 24 52.2753625128 +60 25 50.749843296   9.72 9.65     A1V 42 0
24 NPM1+61.0570 * 17 26 11.6 +61 00 48           K1III 1 0
25 NPM1+66.0507 * 17 31 22.1 +66 46 35           K2III 1 0
26 TYC 4424-1286-1 * 17 32 52.6298776872 +71 04 43.121508384   12.75 12.21     A4V 16 0
27 NPM1+61.0582 * 17 36 55.6 +61 40 58           K1III 1 0
28 TYC 4199-1250-1 * 17 39 43.1756992464 +61 02 55.686522624   12.00 12.16     A3V 4 0
29 TYC 4207-219-1 * 17 40 34.6786967328 +65 27 14.781864924   12.95 12.12     A6V 15 0
30 2MASS J17430448+6655015 Pu* 17 43 04.4856387072 +66 55 01.661508948   13.80 13.525     A5V 26 0
31 NPM1+66.0513 * 17 43 53.7 +66 31 50           K2III 1 0
32 BD+66 1048 * 17 45 45.4441925088 +66 48 46.033892100   11.50 10.41     K0 6 0
33 UCAC3 313-62260 * 17 55 16.2157334112 +66 10 11.606330100   14.39 13.18 13.00   K0.5III 19 0
34 TYC 4212-455-1 * 17 57 13.2321989328 +67 03 40.756797288   11.91 12.01     A3V 28 0
35 2MASS J17574394+6626553 * 17 57 43.9352646840 +66 26 55.317237792           K0III 8 0
36 TYC 4212-372-1 * 17 57 51.4679769312 +66 31 03.413109936   12.49 11.56     K1.5III 11 0
37 [RMC2005] KF06T1 * 17 57 58.4856433200 +66 52 29.406240696   14.50 13.52     K1.5III 13 0
38 2MASS J17583798+6646522 * 17 58 37.9944074280 +66 46 52.111767864   15.10 13.80     K1.5III 25 0
39 [RMC2005] KF06T3 * 17 58 50.2189530768 +66 49 40.564639056           K1III 4 0
40 BD+67 1044 * 17 58 54.6853521888 +67 47 36.927838572   10.58 9.21     K2III 24 0
41 2MASS J17590395+6630593 * 17 59 03.9539176632 +66 30 59.489050068           K1III 8 0
42 TYC 4212-1100-1 * 17 59 12.1825348104 +66 41 36.337731720   12.48 11.23     K1III 9 0
43 TYC 4212-1074-1 SB* 17 59 23.0188229688 +66 02 56.285914236   11.46 10.29     K0III 18 0
44 [RMC2005] KF07T2 * 18 01 40.7477968128 +65 59 44.266201944           K1.5III 1 0
45 TYC 4213-1387-1 * 18 02 01.7173302984 +66 37 39.243417924   12.17 11.16 10.89   K0III 9 0
46 [RMC2005] KF07T3 * 18 02 14.8678755192 +66 03 00.054151236           K1.5III 1 0
47 BPS BS 17447-0067 * 18 02 27.1684933179 +60 43 35.590410425   12.017 11.995 12.120   A2V 23 0
48 HD 165459 * 18 02 30.7405607784 +58 37 38.159882076   6.98 6.86   6.70 A1V 54 0
49 [RMC2005] KF02T3 * 18 03 21.8339126040 +66 34 08.530406832           K0III 3 0
50 TYC 4213-241-1 * 18 03 45.5386365648 +66 56 03.701552964   12.77 11.34     K1III 6 0
51 [RMC2005] KF01T5 * 18 04 03.8938459080 +66 55 43.809732300     13.56     K1III 7 0
52 TYC 4209-1396-1 * 18 05 29.2757502480 +64 27 52.118903700   12.54 12.74     A4V 19 0
53 TYC 4433-1800-1 * 18 08 34.7360078880 +69 27 28.721915028   12.18 11.69     A3V 39 0
54 TYC 4205-1677-1 * 18 12 09.5673393288 +63 29 42.261965880   11.94 12.01     A3V 25 0
55 TYC 4201-1717-1 * 18 12 52.3809756672 +60 02 31.946074944   12.30 11.98     A1V 8 0
56 TYC 4430-1416-1 * 18 28 24.9706008288 +68 58 51.752148132   11.65 10.39     K2III 4 0
57 * alf Lyr dS* 18 36 56.33635 +38 47 01.2802 0.03 0.03 0.03 0.07 0.10 A0V 2787 1
58 BD+68 1022 * 18 47 19.7917465344 +68 16 44.836063716   11.25 9.88     K2III 9 0
59 HD 180609 * 19 12 47.1996312336 +64 10 37.176952476   9.57 9.42     A0V 33 0
60 BD+64 1349 SB* 19 25 15.0273243528 +65 01 58.749110472   10.93 9.86     G5 10 0
61 TYC 4229-1455-1 * 19 25 32.1931826304 +66 47 38.140085976   11.75 10.81     K1III 7 0
62 HD 184837 * 19 37 16.4368734672 -24 40 10.645243788   10.20 10.13     A0V 11 0
63 HD 195061 * 20 29 33.2175787872 -18 13 12.219781620   10.15 9.91 9.79 9.672 A0V 9 0
64 HD 218528 * 23 08 49.4070892248 -08 48 28.104281424   9.60 8.72     K0III 10 0
65 SA 115-554 Ce* 23 41 30.8478895536 +01 26 25.215324612 13.365 12.817 11.812 11.226 10.685 K1.5III 10 0

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