2020A&A...643A.115B

Query : 2020A&A...643A.115B

2020A&A...643A.115B - Astronomy and Astrophysics, volume 643A, 115-115 (2020/11-1)

The Milky Way Cepheid Leavitt law based on Gaia DR2 parallaxes of companion stars and host open cluster populations.

BREUVAL L., KERVELLA P., ANDERSON R.I., RIESS A.G., ARENOU F., TRAHIN B., MERAND A., GALLENNE A., GIEREN W., STORM J., BONO G., PIETRZYNSKI G., NARDETTO N., JAVANMARDI B. and HOCDE V.

Abstract (from CDS):


Aims. Classical Cepheids provide the foundation for the empirical extragalactic distance ladder. Milky Way Cepheids are the only stars in this class accessible to trigonometric parallax measurements. However, the parallaxes of Cepheids from the second Gaia data release (GDR2) are affected by systematics because of the absence of chromaticity correction, and occasionally by saturation.
Methods. As a proxy for the parallaxes of 36 Galactic Cepheids, we adopt either the GDR2 parallaxes of their spatially resolved companions or the GDR2 parallax of their host open cluster. This novel approach allows us to bypass the systematics on the GDR2 Cepheids parallaxes that is induced by saturation and variability. We adopt a GDR2 parallax zero-point (ZP) of -0.046 mas with an uncertainty of 0.015 mas that covers most of the recent estimates.
Results. We present new Galactic calibrations of the Leavitt law in the V, J, H, KS, and Wesenheit WH bands. We compare our results with previous calibrations based on non-Gaia measurements and compute a revised value for the Hubble constant anchored to Milky Way Cepheids.
Conclusions. From an initial Hubble constant of 76.18±2.37km/s/Mpc based on parallax measurements without Gaia, we derive a revised value by adopting companion and average cluster parallaxes in place of direct Cepheid parallaxes, and we find H0=72.8±1.9(statistical+systematics)±1.9(ZP)km/s/Mpc when all Cepheids are considered and H0=73.0±1.9(statistical+systematics)±1.9(ZP)km/s/Mpc for fundamental mode pulsators only.

Abstract Copyright: © L. Breuval et al. 2020

Journal keyword(s): parallaxes - stars: distances - stars: variables: Cepheids - distance scale

Simbad objects: 82

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Number of rows : 82
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 Cl Berkeley 58 OpC 00 00 15.1 +60 56 13   10.39 9.7     ~ 63 0
2 V* CG Cas cC* 00 00 59.2385245512 +60 57 32.432852268   12.70 11.28     F5 102 0
3 V* V379 Cas cC* 00 26 35.9584556448 +60 47 53.433364776   10.18 9.16     F6 54 0
4 V* DL Cas cC* 00 29 58.5888773064 +60 12 43.065292140 10.66 9.88 8.63   7.582 G1Ib-IIHdel-1 331 0
5 NGC 129 OpC 00 30 25.7 +60 12 47   7.33 6.5     ~ 203 0
6 * alf UMi cC* 02 31 49.09456 +89 15 50.7923 3.00 2.62 2.02 1.53 1.22 F8Ib 673 2
7 2MASS J02444302+6128090 * 02 44 43.0222286016 +61 28 09.102114948           ~ 2 0
8 V* DF Cas cC* 02 44 43.3153294344 +61 27 52.922679192   11.80 10.74     F8 84 0
9 V* AW Per cC* 04 47 46.3149227688 +36 43 22.033952832   8.46 7.51   6.200 F0+B6: 221 0
10 ** KRV 15B * 04 47 47.0655184296 +36 43 17.120478684           ~ 2 0
11 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17431 0
12 NAME SEP reg 06 00 00.000 -66 33 38.55           ~ 173 0
13 V* RS Ori cC* 06 22 13.1926522608 +14 40 41.255838516   9.34 8.42   7.270 F4Ib 150 0
14 [FSR2007] 0951 OpC 06 22 17.5 +14 39 00           ~ 29 0
15 V* CV Mon cC* 06 37 04.8449178072 +03 03 50.274557532   11.32 9.90   8.631 ~ 240 0
16 Cl VDB 1 13 * 06 37 05.7134459160 +03 03 55.978257348   14.40 13.72     ~ 11 0
17 ** KRV 1B * 07 09 15.0813809232 -13 47 14.194851540           ~ 2 0
18 V* TV CMa cC* 07 09 15.4111686768 -13 47 09.918759588   11.58 10.59     F5 85 0
19 ESO 428-24 OpC 07 22 56.2 -29 30 07           ~ 37 0
20 V* RS Pup cC* 08 13 04.2157111224 -34 34 42.696447852 8.89 8.51 7.04   5.453 F8Iab 347 0
21 UCAC4 278-031533 * 08 13 07.6302281064 -34 34 52.714514712       16.23   ~ 2 0
22 V* SX Vel cC* 08 44 53.4685905720 -46 20 34.736412696   9.19 8.33   7.264 F8II 135 0
23 2MASS J08445430-4620475 * 08 44 54.3214897248 -46 20 47.632724880           ~ 2 0
24 V* DK Vel cC* 09 17 16.7189602176 -53 05 05.508109032   11.49 10.72     ~ 45 0
25 Cl Ruprecht 79 OpC 09 41 02.2 -53 50 46           ~ 83 0
26 UCAC4 181-038155 * 09 41 09.3150282024 -53 49 03.949835232           ~ 4 0
27 V* CS Vel cC* 09 41 10.2609376392 -53 48 57.785105952   12.46 11.24   10.078 ~ 112 0
28 NGC 3496 OpC 10 59 30.5 -60 20 06   9.02 8.2     ~ 71 0
29 V* XZ Car cC* 11 04 13.4721922680 -60 58 47.732442924 11.38 10.11 8.67     K5 117 0
30 ** KRV 2C * 11 09 37.1677367304 -58 50 33.134498700           ~ 2 0
31 V* ER Car cC* 11 09 41.1427231776 -58 50 15.813233196   7.59 6.79   5.962 G1Iab/b 138 0
32 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2364 3
33 V* R Cru cC* 12 23 37.6899136176 -61 37 44.852101104 7.41 7.00 6.42     F7Ib/II 157 0
34 V* VW Cru cC* 12 33 18.6685630272 -63 30 22.913163396   10.98 9.76 9.68 7.985 K0 69 0
35 Gaia DR3 6053622508133367680 * 12 33 21.5377735344 -63 30 29.884740264           ~ 1 0
36 V* X Cru cC* 12 46 22.2791657112 -59 07 29.015649480   8.97 8.10     G0/2Ib 96 0
37 UCAC4 155-102950 * 12 46 22.8515955360 -59 07 55.883312544       16.16   ~ 4 0
38 ** KRV 4AH * 13 31 32.4673570752 -61 33 54.657300636           ~ 2 0
39 V* V659 Cen cC* 13 31 33.4105951824 -61 34 56.518628628 7.57 7.19 6.49     F6/7Ib+B6V 109 0
40 V* V Cen cC* 14 32 33.0833481288 -56 53 15.774129600 8.44 7.84 6.93   5.798 F5Ib/II 274 0
41 NGC 5662 OpC 14 34 56.2 -56 38 24   6.18 5.5     ~ 122 0
42 V* BP Cir cC* 14 46 41.9805572256 -61 27 42.991255656   8.12 7.52     F2/3II+B6V 93 0
43 ** KRV 5C * 14 52 26.0501140536 -63 47 41.389148796           ~ 2 0
44 * 26 Cir cC* 14 52 35.2587595008 -63 48 35.356730796   6.66 5.96   4.993 F8II 141 0
45 V* SY Nor B * 15 54 42.6123083520 -54 33 57.419871120           ~ 2 0
46 V* SY Nor cC* 15 54 42.8132408112 -54 33 59.158876428   11.12 9.77 9.73 7.928 F9Ib+B4.5V 103 0
47 Cl Lynga 6 OpC 16 04 52.3 -51 57 36   10.28 9.5     ~ 89 0
48 V* TW Nor cC* 16 04 55.2261513912 -51 57 12.653328096   13.67 11.17     ~ 162 0
49 V* RS Nor cC* 16 05 09.9560309808 -53 55 09.887477376   10.95 10.09     F6 75 0
50 UCAC4 181-140252 * 16 05 11.8023273168 -53 55 04.947837780   15.33 14.65 14.73   ~ 2 0
51 V* QZ Nor cC* 16 11 20.4664528848 -54 21 14.824796688 10.08 9.53 8.71 8.66   G1Iab 137 0
52 ** KRV 14B * 16 11 22.3560484632 -54 21 15.720024132           ~ 2 0
53 NGC 6067 OpC 16 13 11.8 -54 13 37           ~ 211 0
54 V* V340 Nor cC* 16 13 17.3997630552 -54 14 05.586545400   9.61 8.47 8.83   G2Iab 160 1
55 V* GU Nor cC* 16 14 54.7528732104 -53 20 18.344138928   11.60 10.08   8.802 ~ 98 0
56 V* S Nor cC* 16 18 51.8316855000 -57 53 59.256000852 8.15 7.49 6.49   5.427 F8/G0Ib 374 1
57 NGC 6087 OpC 16 18 53.0 -57 54 58           ~ 182 0
58 Cl VDBH 222 OpC 17 18 46.6 -38 17 20           ~ 28 0
59 ** EVS 31D * 17 37 36.5863273920 -40 48 37.107839772           ~ 2 0
60 V* V950 Sco cC* 17 37 37.5619837608 -40 48 48.750235632   7.99 7.26     F6Ib/II 77 0
61 IC 4725 OpC 18 31 44.9 -19 06 50           ~ 222 0
62 V* U Sgr cC* 18 31 53.3323107600 -19 07 30.261459540 8.50 7.81 6.68   5.413 G1Ib 467 0
63 IC 4725 106 * 18 31 58.7625906696 -19 07 30.016667244   11.67 11.26     ~ 15 0
64 NGC 6649 OpC 18 33 26.2 -10 23 56   10.35 8.9     ~ 134 0
65 V* V367 Sct cC* 18 33 35.2353033192 -10 25 38.126250552   13.34 11.580     F7Ib 175 0
66 NGC 6664 OpC 18 36 30.0 -08 11 38   8.81 7.8     ~ 122 0
67 V* EV Sct cC* 18 36 39.6017483712 -08 11 05.361288684   10.99 9.90     F8Ib 250 0
68 UCAC4 410-081214 * 18 36 40.4181109776 -08 10 43.826852820       13.96   ~ 4 0
69 V* CM Sct cC* 18 42 26.8209024792 -05 20 27.044239848   11.93 10.93   9.406 ~ 91 0
70 UCAC4 424-085875 * 18 42 28.4537571096 -05 20 19.910940684       14.92   ~ 2 0
71 UCAC4 347-156729 * 18 45 15.5007174096 -20 39 00.842473836   12.60 12.34 12.43   ~ 2 0
72 V* V350 Sgr cC* 18 45 17.4968424336 -20 38 50.552766852   8.321 7.450 8.41 6.421 F8Ib/II 217 0
73 V* V1046 Cyg cC* 20 16 47.4956607528 +36 32 59.860814496           ~ 33 0
74 V* V1334 Cyg cC* 21 19 22.1791528656 +38 14 14.868825648   6.364 5.882     F1II+B7.0V 190 0
75 V* V532 Cyg cC* 21 20 32.9005205088 +45 28 03.019906632   10.08 9.11     F5 118 0
76 UCAC4 678-104412 * 21 20 34.5976109112 +45 27 51.631994844       14.80   ~ 2 0
77 * del Cep B V*? 22 29 09.2466864624 +58 24 14.747232924 5.95 6.28 6.30     B7IV 154 0
78 * del Cep cC* 22 29 10.2626640314 +58 24 54.697613650 4.71 4.35 3.75   3.219 F5Iab:+B7-8 730 0
79 V* CE Cas B cC* 23 58 09.1062438336 +61 12 49.078923084   12.27 11.20     F8Ib 45 0
80 V* CE Cas A cC* 23 58 09.4463569272 +61 12 49.336242768   12.15 10.95     F9Ib 51 0
81 V* CF Cas cC* 23 58 17.9760671064 +61 13 15.821693832   12.72 10.80   9.700 F8Ibv 245 0
82 NGC 7790 OpC 23 58 27.1 +61 12 36   9.18 8.5     ~ 272 0

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