2011ApJ...741L..27M

Query : 2011ApJ...741L..27M

2011ApJ...741L..27M - Astrophys. J., 741, L27 (2011/November-2)

New evidence supporting membership for TW Nor in lyngå 6 and the Centaurus spiral arm.

MAJAESS D., TURNER D., MONI BIDIN C., MAURO F., GEISLER D., GIEREN W., MINNITI D., CHENE A.-N., LUCAS P., BORISSOVA J., KURTEV R., DEKANY I. and SAITO R.K.

Abstract (from CDS):

The putative association between the classical Cepheid TW Nor and the open cluster Lyngå 6 has generated considerable debate in the literature. New JHKs photometry in tandem with existing radial velocities for Lyngå 6 stars implies cluster membership for TW Nor and establishes the variable as a high-weight calibrator for classical Cepheid relations. Fundamental mean parameters determined for Lyngå 6 are: d = 1.91±0.10 kpc, E(J - H) = 0.38±0.02, and log τ = 7.9±0.1. The Benedict et al./Turner Galactic VIc Wesenheit function was revised using TW Nor's new parameters: W_VI, 0_= (- 3.37±0.08)log P0- 2.48±0.08. TW Nor/Lyngå 6 lie beyond the Sagittarius-Carina spiral arm and occupy the Centaurus arm, along with innumerable young Cepheids and clusters (e.g., VW Cen and VVV CL070).

Abstract Copyright: ∼

Journal keyword(s): dust, extinction - Hertzsprung-Russell and C-M diagrams - infrared: stars - open clusters and associations: individual: Lynga 6 - stars: distances - stars: variables: Cepheids

Simbad objects: 27

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Number of rows : 27
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 V* SU Cas cC* 02 51 58.7511911208 +68 53 18.606894036 6.92 6.44 5.80     F5.5III+ 444 1
2 Cl Melotte 20 MGr 03 26 50.6 +48 51 48           ~ 928 0
3 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
4 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
5 * zet Gem cC* 07 04 06.5312384690 +20 34 13.074474962 5.20 4.58 3.79   3.082 G1Ib 596 0
6 NGC 2451 Cl* 07 45.4 -37 58           ~ 165 1
7 NGC 2632 OpC 08 39 58.4 +19 36 33           ~ 1733 0
8 IC 2391 OpC 08 41 17.5 -53 03 00           ~ 871 0
9 NGC 3404 EmG 10 50 17.9811573624 -12 06 31.142976300   14.49       ~ 45 0
10 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 482 1
11 Cl Hogg 15 OpC 12 43 36.8 -63 06 01           ~ 61 0
12 V* OO Cen cC* 13 26 30.0709538976 -63 09 45.428439708   13.78       ~ 56 0
13 V* VW Cen cC* 13 33 59.0300715216 -64 03 19.999348524   11.60 10.36   8.785 ~ 137 0
14 V* KN Cen cC* 13 36 36.8950655064 -64 33 29.914949592   11.22 9.86     G8Iab+B6.0V 157 0
15 V* QY Cen cC* 14 08 17.1303436344 -61 44 11.133188844       11.108 9.347 ~ 64 0
16 NAME Car-Sgr Arm PoG 15 00 -40.0           ~ 581 1
17 Cl Lynga 6 OpC 16 04 50.7 -51 57 19   10.28 9.5     ~ 95 0
18 Cl Lynga 6 7 * 16 04 54.5331867144 -51 57 33.404665176   14.64 12.49     G 12 0
19 V* TW Nor cC* 16 04 55.2261513912 -51 57 12.653328096   13.67 11.17     ~ 171 0
20 V* V340 Nor cC* 16 13 17.3997630552 -54 14 05.586545400   9.61 8.47 8.83   G2Iab 175 1
21 VVV CL070 OpC 16 21 48.0 -51 44 11           ~ 4 0
22 V* KQ Sco cC* 16 51 38.5473559392 -45 25 36.101286516 12.37 10.69 9.31     K7 149 0
23 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
24 NGC 6441 GlC 17 50 13.06 -37 03 05.2           ~ 940 0
25 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
26 NAME Galactic Bulge reg ~ ~           ~ 4794 0
27 NAME Centaurus Arm PoG ~ ~           ~ 88 0

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