2019A&A...625A..14R


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST21:07:31

2019A&A...625A..14R - Astronomy and Astrophysics, volume 625A, 14-14 (2019/5-1)

Reclassification of Cepheids in the Gaia Data Release 2. Period-luminosity and period-Wesenheit relations in the Gaia passbands.

RIPEPI V., MOLINARO R., MUSELLA I., MARCONI M., LECCIA S. and EYER L.

Abstract (from CDS):


Context. Classical Cepheids are the most important primary indicators for the extragalactic distance scale. Establishing the precise zero points of their period-luminosity and period-Wesenheit (PL/PW) relations has profound consequences on the estimate of H0. Type II Cepheids are also important distance indicators and tracers of old stellar populations.
Aims. The recent Data Release 2 (DR2) of the Gaia spacecraft includes photometry and parallaxes for thousands of classical and Type II Cepheids. We seek to review the classification of Gaia DR2 Cepheids and to derive precise PL/PW for the Magellanic Clouds (MCs) and Galactic Cepheids.
Methods. We adopted information from the literature and the Gaia astrometry and photometry to assign DR2 Galactic Cepheids to the classical, anomalous, and Type II Cepheids classes.
Results. We reclassified the DR2 Galactic Cepheids and derived new precise PL/PW relations in the Gaia passbands for the MCs and Milky Way Cepheids. We investigated for the first time the dependence on metallicity of the PW relation for classical Cepheids in the Gaia bands, finding inconclusive results.
Conclusions. According to our analysis, the zero point of the Gaia DR2 parallaxes as estimated from classical and Type II Cepheids seems likely to be underestimated by ∼0.07mas, which agrees with recent literature. The next Gaia data releases are expected to fix this zero point offset to allow eventually a determination of H0 to less than 1%.

Abstract Copyright: © ESO 2019

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

VizieR on-line data: <Available at CDS (J/A+A/625/A14): table2.dat table5.dat table7.dat table8.dat refs.dat>

Status at CDS:   Tables of objects will be appraised for possible ingestion in SIMBAD.

Simbad objects: 52

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Number of rows : 52

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 Cl Berkeley 58 OpC 00 00.0 +60 58   10.39 9.7     ~ 42 0
2 V* CG Cas cC* 00 00 59.2384113995 +60 57 32.432020899   12.70 11.28     F5 79 0
3 V* DL Cas cC* 00 29 58.5886100054 +60 12 43.069687745 10.66 9.88 8.63   7.582 G1Ib-IIHdel-1 295 0
4 NGC 129 OpC 00 30 00 +60 13.1   7.33 6.5     ~ 178 0
5 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9440 1
6 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5665 1
7 V* AC Cam cC* 03 23 47.8832831571 +59 21 20.417989420   14.14       ~ 26 0
8 V* AD Cam cC* 03 29 25.9693397357 +60 26 47.271990543   14.16       ~ 44 0
9 NAME Per Arm PoG 03 30 +45.0           ~ 1247 0
10 OGLE GAL-ACEP-6 WV* 04 23 51.4389414684 -76 54 42.783000663     13.015   12.344 ~ 3 0
11 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14826 1
12 M 79 GlC 05 24 10.59 -24 31 27.3   9.21 8.16     ~ 716 0
13 Cl* NGC 1904 SAW V7 WV* 05 24 12.6869974163 -24 31 42.131278076   16.43 13.65 13.73 12.90 ~ 4 0
14 CRTS J055633.2+014232 RR* 05 56 33.2970231745 +01 42 32.606092078     15.78     ~ 2 0
15 V* AA Gem cC* 06 06 34.9459286635 +26 19 45.205210801   11.0 9.91   8.540 K0 107 0
16 V* AD Gem cC* 06 43 07.5116892124 +20 56 20.801766765   10.42 9.80   9.044 F5 91 0
17 V* AC Mon cC* 07 00 59.8200989695 -08 42 32.367780933   11.37 10.29     F5 71 0
18 V* AD Pup cC* 07 48 03.8513966553 -25 34 40.023144556   10.81 9.99     F8 88 0
19 V* AH Vel cC* 08 11 59.9670207132 -46 38 39.656138625   6.35 5.76     F7Ib/II 158 0
20 V* AE Vel cC* 09 36 51.4663512450 -53 01 58.066349829   11.5 10.4   8.734 ~ 56 0
21 V* AD Cru cC* 12 12 59.6676390921 -62 05 48.571902831   12.19 11.07     ~ 57 0
22 V* AG Cru cC* 12 41 26.0296377255 -59 47 39.039228681 8.92 9.050 8.265   7.356 F8Ib/II 112 0
23 V* V Cen cC* 14 32 33.0828020969 -56 53 15.774776152 8.44 7.84 6.93   5.798 F5Ib/II 237 0
24 NGC 5662 OpC 14 35 37 -56 37.1   6.18 5.5     ~ 97 0
25 V* QZ Nor cC* 16 11 20.4661902809 -54 21 14.826048900 10.08 9.53 8.71 8.66   G1Iab 115 0
26 NGC 6067 OpC 16 13 11 -54 13.1           ~ 168 0
27 V* V340 Nor cC* 16 13 17.3998357878 -54 14 05.588347830   9.61 8.47 8.83   G2Iab 133 0
28 NGC 6087 OpC 16 18 50 -57 56.1   5.85 5.4     ~ 150 0
29 V* S Nor cC* 16 18 51.8313333962 -57 53 59.253617873 8.15 7.49 6.49   5.427 F8/G0Ib 336 1
30 M 10 GlC 16 57 09.05 -04 06 01.1     4.98     ~ 683 0
31 M 62 GlC 17 01 12.60 -30 06 44.5   8.55 7.39     ~ 512 0
32 V* V1836 Oph RR* 17 18 53.6738154037 -19 59 34.302244081           ~ 4 0
33 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11533 0
34 V* BL Her WV* 18 01 09.2241552984 +19 14 56.695123489   10.54 9.70     F0 155 0
35 OGLE BLG-RRLYR-12209 RR* 18 03 48.5265177900 -31 46 55.463437487     17.035   15.902 ~ 6 0
36 Cl Turner 2 OpC 18 16 51 -19 01.8           ~ 15 0
37 V* WZ Sgr cC* 18 16 59.7158915244 -19 04 32.989119557   9.10 7.45     F7(III) 225 0
38 V* V3276 Sgr RR* 18 25 05.4644490478 -34 26 56.401964294           ~ 4 0
39 MACHO 175.30920.52 RR* 18 28 27.8895332714 -27 26 12.790410474     16.54 16.09   ~ 6 0
40 IC 4725 OpC 18 31 47 -19 07.0           ~ 192 0
41 V* U Sgr cC* 18 31 53.3321808602 -19 07 30.262730218 8.50 7.81 6.68   5.413 G1Ib 427 0
42 NGC 6664 OpC 18 36 37 -07 48.8   8.81 7.8     ~ 102 0
43 V* EV Sct cC* 18 36 39.6017832876 -08 11 05.360422056   10.99 9.90     G0II 225 0
44 V* BB Sgr cC* 18 50 59.8730479535 -20 17 42.828317888 8.07 7.53 6.69   5.824 G0Ib 230 0
45 C 1850-204 OpC 18 52 16 -20 12.2     6.3     ~ 56 0
46 V* SU Cyg cC* 19 44 48.7364497912 +29 15 52.894148064 7.10 6.88 6.44 6.06 5.84 F2Iab:+B8.0V 279 1
47 NAME SU Cygni Cluster OpC 19 44 49 +29 15.9           ~ 25 0
48 V* CE Cas B cC* 23 58 09.1060126033 +61 12 49.080293324   12.27 11.20     F8Ib 33 0
49 V* CE Cas A cC* 23 58 09.4462986260 +61 12 49.332003456   12.15 10.95     F9Ib 38 0
50 V* CF Cas cC* 23 58 17.9757306390 +61 13 15.821709555   12.72 10.80   9.700 F8Ibv 214 0
51 NGC 7790 OpC 23 58 24 +61 12.5   9.18 8.5     ~ 245 0
52 NAME Local Arm reg ~ ~           ~ 374 0

    Equat.    Gal    SGal    Ecl

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2020.07.04-21:07:31

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