2018A&A...619A.180M


Query : 2018A&A...619A.180M

2018A&A...619A.180M - Astronomy and Astrophysics, volume 619A, 180-180 (2018/11-1)

Reanalysis of the Gaia Data Release 2 photometric sensitivity curves using HST/STIS spectrophotometry.

MAIZ-APELLANIZ J. and WEILER M.

Abstract (from CDS):


Context. The second data release (DR2) from the European Space Agency mission Gaia took place on April 2018. DR2 included photometry for more than 1.3 x 109 sources in the three bands G, GBP, and GRP. Even though the Gaia DR2 photometry is very precise, there are currently three alternative definitions of the sensitivity curves that show significative differences.
Aims. The aim of this paper is to improve the quality of the input calibration data to produce new compatible definitions of the G, GBP, and GRP bands and to identify the reasons for the discrepancies between previous definitions.
Methods. We have searched the Hubble Space Telescope (HST) archive for Space Telescope Imaging Spectrograph (STIS) spectra with G430L+G750L data obtained with wide apertures and combined them with the CALSPEC library to produce a high quality spectral energy distribution (SED) library of 122 stars with a broad range of colors, including three very red stars. This library defines new sensitivity curves for G, GBP, and GRP using a functional analytical formalism.
Results. The new sensitivity curves are significantly better than the two previous attempts we use as a reference, REV (Evans et al. 2018, A&A, 616, A4) and WEI (Weiler 2018, A&A, 616, A17). For G we confirm the existence of a systematic bias in magnitude and correct a color term present in REV. For GBP we confirm the need to define two magnitude ranges with different sensitivity curves and measure the cut between them at Gphot=10.87 mag with a significant increase in precision. The new curves also fit the data better than either REV or WEI. For GRP, our new sensitivity curve fits the STIS spectra better and the differences with previous attempts reside in a systematic effect between ground-based and HST spectral libraries. Additional evidence from color-color diagrams indicate that the new sensitivity curve is more accurate. Nevertheless, there is still room for improvement in the accuracy of the sensitivity curves because of the current dearth of good-quality red calibrators: adding more to the sample should be a priority before Gaia data release 3 takes place.

Abstract Copyright: © ESO 2018

Journal keyword(s): surveys - methods: data analysis - techniques: photometric

VizieR on-line data: <Available at CDS (J/A+A/619/A180): table2.dat>

Simbad objects: 122

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Number of rows : 122
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 HD 9051 PM* 01 28 46.5026384544 -24 20 25.442103012   9.73 8.92     G6/8IIIwF5 63 0
2 CD-24 731 HS* 01 43 48.5449039272 -24 05 10.223541204   11.6 11.9     sdBHe0 68 0
3 HD 13338 bC* 02 12 19.1724315240 +57 56 27.171976740 8.73 9.38 9.17     O9.5V 55 0
4 BD+56 517 * 02 18 55.7271815616 +57 09 06.625290312 10.26 10.77 10.4410   9.6640 B1.5III 41 0
5 HD 14250 Pu* 02 20 15.7232673384 +57 05 54.983862708 8.74 9.28 8.0358 8.66 7.5804 B1.5III 102 0
6 HD 14321 EB* 02 20 52.8798668952 +56 55 32.717424432 8.98 9.52 8.6406   8.0964 B2.0III 49 0
7 V* V621 Per EB* 02 22 09.7108878600 +57 07 02.305907292 9.14 9.68 9.4000   7.9369 B1.5I 75 0
8 HD 14943 ** 02 22 54.6750661920 -51 05 31.659759744   6.101 5.898     A5V 45 0
9 * ksi02 Cet * 02 28 09.5570589539 +08 27 36.216809306 4.14 4.25 4.30 4.29 4.34 B9III 334 0
10 HD 15570 Em* 02 32 49.4207394600 +61 22 42.089384892 8.40 8.80 8.11 7.41 6.86 O4If 303 0
11 BD+60 513 Y*O 02 34 02.5297182912 +61 23 10.877763048 9.38 9.88 9.39     O7Vnz 109 0
12 HD 18352 * 02 59 47.3680298400 +61 17 23.798441328 8.027 6.987 6.844     B1V 67 0
13 WG 7 WD* 03 09 47.9177537304 -56 23 49.411222764   13.99 14.14 14.42   DB 54 0
14 UCAC3 125-8171 * 03 32 32.8728703992 -27 51 48.339287532 18.74 18.0893 16.64   17.0383 ~ 32 0
15 HZ 4 WD* 03 55 21.9881513952 +09 47 18.135008592 13.917 14.592 14.506 14.58 14.642 DA3.4 200 0
16 HD 284248 Pe* 04 14 35.5161858536 +22 21 04.252516252 9.49 9.68 9.23 8.77 8.43 sdG0 182 0
17 HD 29647 * 04 41 08.0448698568 +25 59 33.949206132 9.69 9.22 8.31 7.35 6.60 B9IIIpHgMn 205 0
18 HD 31128 PM* 04 52 09.9097086888 -27 03 50.940147636   9.55 9.14     F3/5Vw 140 0
19 BD+52 913 WD* 05 05 30.6180977592 +52 49 51.919301604 10.25 11.44 11.69 11.93 12.108 DA.8 1082 0
20 * lam Lep * 05 19 34.5240485 -13 10 36.440791 3.03 4.04 4.29 4.41 4.69 B0.5V 299 0
21 HD 37061 Or* 05 35 31.3649044920 -05 16 02.582064192 6.44 7.09 6.83     O9.5V 354 0
22 HD 37962 PM* 05 40 51.9657648277 -31 21 03.986325115   8.50 7.85     G2V 105 0
23 HD 37725 * 05 41 54.3697767432 +29 17 50.954803440   8.12 8.31     A3V 20 0
24 HD 38087 ** 05 43 00.5754723576 -02 18 45.389406240 7.96 8.40 8.29 8.06 7.89 B3II 167 1
25 * mu. Col V* 05 45 59.8950238944 -32 18 23.162261796 3.84 4.90 5.18 5.30 5.57 O9.5V 491 0
26 HD 38949 * 05 48 20.0587517352 -24 27 49.853027448   8.37 7.80     G1V 73 0
27 GD 71 WD* 05 52 27.6198591816 +15 53 13.228887444 11.675 12.783 13.032 13.169 13.337 DA1.5 383 0
28 HD 46106 Y*O 06 31 38.3968383096 +05 01 36.396422796 7.33 8.08 7.93 7.76 7.66 O9.7III(n) 154 0
29 HD 46150 Y*O 06 31 55.5205071744 +04 56 34.296516096 6.03 6.86 6.73 6.50 6.41 O5V((f))z 394 0
30 LS VI +04 12 EB* 06 32 06.1360004063 +04 52 15.352618809 9.21 9.84 9.71     B1III 59 0
31 HD 46966 ** 06 36 25.8880460976 +06 04 59.474397540 5.91 6.83 6.87     O8.5IV 206 0
32 HD 292167 * 06 44 53.8144895352 +00 37 12.593465724 9.1 9.82 9.63 9.21   A3Ia 47 0
33 HD 60753 * 07 33 27.3186651576 -50 35 03.315962580 6.02 6.587 6.680     B3IV 81 0
34 HD 68633 ** 08 10 53.1452339928 -51 11 26.083231800   8.19 7.96     B5V 30 0
35 HD 233511 PM* 08 19 22.5714563279 +54 05 09.623339988 10.02 10.24   9.4   F4 133 0
36 HD 70614 * 08 21 10.2967682064 -42 24 42.401942136   9.66 9.29     B3III 16 0
37 HD 74000 Pe* 08 40 50.8036114756 -16 20 42.516208237 9.84 10.09 9.66     F2 267 0
38 AG+81 266 HS* 09 21 19.1766306264 +81 43 27.630508800 10.392 11.59 11.95 12.09 12.281 sdO 69 0
39 V* V405 Car s*b 10 35 48.2142075456 -58 12 33.202086660 8.35 9.234 9.242 9.772 9.19 B0Iab 60 0
40 HD 92044 * 10 36 16.0790202360 -58 16 38.162765820 7.72 8.40 8.25 8.10 7.91 B1II 71 0
41 Feige 34 HS* 10 39 36.7358839104 +43 06 09.212615280 9.613 10.91 11.14 11.319 11.464 sdOp 673 0
42 HD 93028 SB* 10 43 15.3393101352 -60 12 04.231982304 7.29 8.24 8.30 9.26   O9IV 169 0
43 CPD-59 2591 * 10 44 36.7048192536 -59 47 29.696644860 10.726 11.312 10.851   9.975 O8.5V+B0.5:V: 45 0
44 CD-59 3300 * 10 44 41.7962304024 -59 46 56.405228916 8.07 8.79 8.57 9.33   O6V((f)) 140 0
45 HD 93250 * 10 44 45.0275085072 -59 33 54.680974848 6.73 8.12 7.50 8.38   O4III(fc) 313 0
46 BD+29 2091 PM* 10 47 23.1623890044 +28 23 55.925628075   10.72   10.1   F5 140 0
47 HD 106252 PM* 12 13 29.5095375792 +10 02 29.887248516   8.00   7.0   G0 185 1
48 HD 110336 * 12 43 05.3295762552 -77 21 03.799849968   8.99 8.64     B9IV 25 0
49 GD 153 WD* 12 57 02.3224909560 +22 01 52.634778240 11.883 13.060 13.349 13.488 13.669 DA1.2 351 0
50 HD 112607 * 12 59 01.3167779928 -63 38 26.242244376 7.98 8.24 8.10     B5IV 37 0
51 HD 116405 * 13 22 45.1228533984 +44 42 53.894434752   8.27 8.34     A0V 46 0
52 HZ 44 HS* 13 23 35.2629445608 +36 07 59.544140304 10.186 11.42 11.65 12.00 11.995 sdBN0VIIHe28 412 0
53 LAWD 52 WD* 13 38 50.4780906644 +70 17 07.640657534 11.807 12.54 12.60 13.01 12.979 DA2.4 215 0
54 NAME Proxima Centauri Er* 14 29 42.9461331854 -62 40 46.164680672 14.21 12.95 11.13 9.45 7.41 M5.5Ve 1262 0
55 BD-11 3759 BY* 14 34 16.8116623459 -12 31 10.414495538 14.041 12.915 11.317 10.093 8.473 M3.5V 187 0
56 BD+26 2606 SB* 14 49 02.3593347728 +25 42 09.192358874 9.92 10.16 9.73 9.27 8.95 A5 370 0
57 TYC 4413-304-1 PM* 14 51 57.9795358920 +71 43 17.392919520 12.751 12.84 12.16 12.05 11.313 G0 37 0
58 * lam Lib SB* 15 53 20.0538968232 -20 10 01.471003716 4.43 4.997 5.027     B3V 211 0
59 HD 142165 SB* 15 53 53.9142283800 -24 31 59.373289920 4.95 5.350 5.372     B5V 132 0
60 GSPC P177-D * 15 59 13.5786527568 +47 36 41.906773080   14.17 13.52 13.42   G0 46 0
61 HD 146285 Ro* 16 16 25.1723345064 -24 59 19.464122400   8.12 7.92   7.47 B8V 79 0
62 SDSS J161814.23+000008.6 * 16 18 14.2395011136 +00 00 08.608982724   17.24 16.75 16.35 15.93 G0-5 10 1
63 UCAC3 292-117285 * 16 19 46.1029541808 +55 34 17.861479500   17.09 16.23 16.41   G0-5 14 1
64 HD 147196 Be* 16 21 19.1910323616 -23 42 28.738330020 7.04 7.21 7.04     B6.5V 100 0
65 HD 147889 Y*O 16 25 24.3163637976 -24 27 56.569805208 8.56 8.73 7.90     B2V 468 1
66 PG 1628+530 HS* 16 29 35.7472961256 +52 55 53.612669820   15.60 15.40     sdBO 15 0
67 GSC 02581-02323 * 16 31 33.8123836584 +30 08 46.397382324 13.576 12.972 12.917 12.564 12.212 G2V 84 0
68 HD 149452 * 16 37 10.5115048704 -47 07 49.828653588 9.2 10.39 9.40 9.54 8.73 O9IVn 55 0
69 V* V946 Sco bC* 16 54 01.7631666120 -41 51 11.868345252 9.890 10.471 10.281 10.327 9.927 B2IV-V 46 0
70 VB 8 LM* 16 55 35.2557374336 -08 23 40.753073075   18.7 16.916 14.566 12.24 M7Ve 426 0
71 PG 1657+344 WD* 16 58 51.1124739360 +34 18 53.321336856   16.12       DA.9 61 0
72 BD+60 1753 * 17 24 52.2753625128 +60 25 50.749843296   9.72 9.65     A1V 27 0
73 HD 158485 * 17 26 04.8373251744 +58 39 06.831955296   6.616 6.494     A4V 64 0
74 HD 159222 PM* 17 32 00.9920372760 +34 16 16.133732796 7.38 7.21   6.1   G1V 240 0
75 TYC 4424-1286-1 * 17 32 52.6298776872 +71 04 43.121508384   12.75 12.21     A4V 14 0
76 BD+02 3375 Pe* 17 39 45.5948675731 +02 24 59.606824535 10.18 10.40 9.92 9.47 9.12 A5 198 0
77 TYC 4207-219-1 * 17 40 34.6786967328 +65 27 14.781864924   12.95 12.12     A6V 13 0
78 HD 160617 Pe* 17 42 49.3234249010 -40 19 15.503834657   9.18 8.7 8.394 8.065 G0 202 0
79 2MASS J17430448+6655015 Pu* 17 43 04.4856387072 +66 55 01.661508948   13.80 13.525     A5V 19 0
80 HD 163466 * 17 52 25.3741156656 +60 23 46.938537132   7.04 6.85     A2 39 0
81 UCAC3 313-62260 * 17 55 16.2157334112 +66 10 11.606330100   14.39 13.18 13.00   K0.5III 14 0
82 TYC 4212-455-1 * 17 57 13.2321989328 +67 03 40.756797288   11.91 12.01     A3V 19 0
83 2MASS J17583798+6646522 * 17 58 37.9944074280 +66 46 52.111767864   15.10 13.80     K1.5III 22 0
84 HD 164073 * 18 02 00.5634000360 -48 48 37.652476032 7.55 8.05 8.03     B3III/IV 25 0
85 BPS BS 17447-0067 * 18 02 27.1687762202 +60 43 35.591575409   12.017 11.995 12.120   A2V 16 0
86 HD 165459 * 18 02 30.7405607784 +58 37 38.159882076   6.98 6.86   6.70 A1V 47 0
87 * 9 Sgr Em* 18 03 52.4450051016 -24 21 38.632254012 5.08 5.97 5.97 5.72 5.70 O4V((f))z 539 0
88 HD 164865 s*b 18 04 15.2161048560 -24 11 00.078860400 8.62 8.470 7.630 6.74 5.910 B9Ia 65 0
89 TYC 4209-1396-1 * 18 05 29.2757502480 +64 27 52.118903700   12.54 12.74     A4V 17 0
90 TYC 4433-1800-1 * 18 08 34.7360078880 +69 27 28.721915028   12.18 11.69     A3V 23 0
91 TYC 4205-1677-1 * 18 12 09.5673393288 +63 29 42.261965880   11.94 12.01     A3V 19 0
92 HD 168075 SB* 18 18 36.0418343184 -13 47 36.449731536 8.62 9.22 8.77 9.45   O7V(n)((f))z 141 0
93 BD-13 4930 Y*O 18 18 52.6749052848 -13 49 42.634556148 9.04 9.71 9.45   8.968 O9.7V 105 0
94 HD 172140 bC* 18 39 48.2537132208 -29 20 21.357618720 9.02 9.90 10.0     B1II 55 0
95 CD-37 13034 * 19 03 12.0151533096 -37 29 10.548940344   10.66 10.07     B8V 3 0
96 HD 180609 * 19 12 47.1996312336 +64 10 37.176952476   9.57 9.42     A0V 25 0
97 LAWD 74 WD* 19 20 34.9229289504 -07 40 00.065957592 11.553 12.345 12.290 12.229 12.164 DBQA5 229 0
98 BD-13 5550 pA* 20 01 49.8291561312 -12 41 17.767855176 10.62 11.3 11.4     B1Ibe 73 0
99 HD 228199 * 20 11 27.2647005336 +36 29 56.857195608   9.41 9.34     B0.5:V 33 0
100 HD 192639 s*b 20 14 30.4275801672 +37 21 13.816276704 6.83 7.46 7.11     O7.5Iabf 292 0
101 HD 193322 ** 20 18 06.98820 +40 43 55.5001 5.17 5.94 5.84 5.69 5.68 O9IV(n)+B1.5V 278 0
102 HD 185975 PM* 20 28 18.7398264168 -87 28 19.937567316   8.78 8.10     G3V 38 0
103 HS 2027+0651 WD* 20 29 32.5058738256 +07 01 07.699206000   16.1   16.9   DO 17 0
104 HD 197512 * 20 42 10.0488399504 +49 44 05.060333040 7.93 8.60 8.55     B1V 66 0
105 HD 198781 Pu* 20 49 17.3909110680 +64 02 32.131010292 5.75 6.472 6.451     B0.5V 102 0
106 HD 199216 * 20 53 52.4036563032 +49 32 00.325435776 7.05 7.51 7.03     B1II 85 0
107 HD 200654 Pe* 21 06 34.7513254468 -49 57 50.280288000   9.74 9.1     CEMP 106 0
108 LAWD 87 WD* 21 32 16.2327040616 +00 15 14.399267982 13.717 14.634 14.674 14.675 14.676 DB4 182 1
109 HD 205905 PM* 21 39 10.1509511673 -27 18 23.662643353   7.36 6.74     G1.5IV-V 98 0
110 HD 205805 HS* 21 39 10.6154323536 -46 05 51.525534876 9.05 9.98 10.21     sdB 80 0
111 HD 239745 Em* 21 43 24.4643840616 +57 01 23.356317432 8.60 9.21 8.92     B1V 40 0
112 HD 207198 * 21 44 53.2791389640 +62 27 38.048647248 5.61 6.25 5.94 5.66 5.49 O8.5II 345 0
113 HD 209458 V* 22 03 10.7727465312 +18 53 03.549393384   8.21 7.63     F9V 1094 1
114 HD 210121 * 22 08 11.9027578440 -03 31 52.765490316   7.84 7.68     B7II 172 0
115 * lam Cep s*b 22 11 30.5765111040 +59 24 52.154264880 4.55 5.29 5.05 4.77 4.62 O6.5I(n)fp 681 1
116 BD+17 4708 SB* 22 11 31.3756832854 +18 05 34.177983548 9.73 9.91 9.46 9.03 8.70 sdF8 565 0
117 BD+69 1231 Y*O 22 13 24.5285030448 +70 15 05.081570064   9.41 9.29     B9.5V 47 2
118 * 10 Lac ** 22 39 15.6786372 +39 03 00.971152 3.650 4.670 4.880 4.98 5.19 O9V 753 0
119 PHL 382 HS* 22 43 06.0218229264 -14 50 37.453883532   11.3 11.4     sdB 27 0
120 HD 217086 Y*O 22 56 47.1887590800 +62 43 37.657173900 7.88 8.30 7.66 8.35   O7Vnn((f))z 254 0
121 Feige 110 HS* 23 19 58.3996844256 -05 09 56.171142864 10.360 11.45 11.50 11.970 12.145 sdO8VIIIHe5 630 1
122 HD 220057 SB* 23 20 00.6489087840 +61 08 59.447042412 6.37 6.948 6.944     B5 83 0

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2023.11.30-02:49:46

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