J/MNRAS/466/3636 The young open cluster NGC 7067 (Monguio+, 2017)
The young open cluster NGC 7067 using Stromgren photometry.
Monguio M., Negueruela I., Marco A., Gonzalez-Fernandez C.,
Alonso-Santiago J., Costado M.T., Casamiquela L., Lopez-Corredoira M.,
Molgo J., Vilardell F., Alfaro E.J., Antoja T., Figueras F., Garcia M.,
Jordi C., Romero-Gomez M.
<Mon. Not. R. Astron. Soc. 466, 3636 (2017)>
=2017MNRAS.466.3636M 2017MNRAS.466.3636M (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, open ; Photometry, uvby, beta ; Effective temperatures
Keywords: methods: observational -
Hertzsprung-Russell and colour-magnitude diagrams -
open clusters and associations: individual: NGC 7067
Abstract:
NGC 7067 is a young open cluster located in the direction between the
first and the second Galactic quadrants and close to the Perseus
spiral arm. This makes it useful for studies of the nature of the
Milky Way spiral arms. Stromgren photometry taken with the Wide Field
Camera at the Isaac Newton Telescope allowed us to compute individual
physical parameters for the observed stars and hence to derive the
cluster's physical parameters. Spectra from the 1.93-m telescope at
the Observatoire de Haute-Provence helped to check and improve the
results. We obtained photometry for 1233 stars, individual physical
parameters for 515 and spectra for 9 of them. The 139 selected cluster
members lead to a cluster distance of 4.4±0.4kpc, with an age
below log10(t(yr))=7.3 and a present mass of 1260±160M☉. The
morphology of the data reveals that the centre of the cluster is at
(RA, DE) = (21:24:13.69, +48:00:39.2) J2000, with a radius of
6.1-arcmin. Stromgren and spectroscopic data allowed us to improve the
previous parameters available for the cluster in the literature.
Description:
The Wide Field Camera (WFC) at the Isaac Newton Telescope (INT, 2.5m)
- located at El Roque de los Muchachos in the Canary Islands - was
used to obtain Stroemgren uvbyβ CCD photometry for this cluster.
The observations were acquired during the nights of 2014 July 6-8.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
tablea1.dat 126 1233 Coordinates and photometric indexes
tablea2.dat 51 40 Parameters for B star members
tablea3.dat 72 515 Individual physical parameters for hot stars
--------------------------------------------------------------------------------
See also:
J/A+A/549/A78 : uvbyβ photometric catalog toward Anticenter
(Monguio+, 2013)
J/A+A/568/A119 : Stellar physical parameters for young stars (Monguio+, 2014)
Byte-by-byte Description of file: tablea1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- ID ID number
7- 8 I2 h RAh Right ascension (ICRS, Epoch=J2000)
10- 11 I2 min RAm Right ascension (ICRS, Epoch=J2000)
13- 16 F4.1 s RAs Right ascension (ICRS, Epoch=J2000)
19 A1 --- DE- Declination sign (ICRS, Epoch=J2000)
20- 21 I2 deg DEd Declination (ICRS, Epoch=J2000)
23- 24 I2 arcmin DEm Declination (ICRS, Epoch=J2000)
26- 27 I2 arcsec DEs Declination (ICRS, Epoch=J2000)
29- 33 F5.2 mag Vmag Magnitude in Johnson V
35- 39 F5.2 mag e_Vmag Error in V magnitude
41- 45 F5.2 mag b-y b-y color index
47- 51 F5.2 mag e_b-y Error in b-y color index
52- 57 F6.2 mag m1 m1 index
59- 63 F5.2 mag e_m1 Error in m1 index
64- 69 F6.2 mag c1 ? c1 index
71- 75 F5.2 mag e_c1 ? Error in c1 index
77- 81 F5.2 mag beta ? beta index
83- 87 F5.2 mag e_beta ? Error in beta
89 I1 --- Member [0/1] 1 for member
91-109 A19 --- IPHAS IPHAS ID (JHHMMSS.ss+DDMMSS.s)
111-126 A16 --- 2MASS 2MASS ID (HHMMSSss+DDMMSSs)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- ID ID number
7- 8 I2 h RAh Right ascension (ICRS, Epoch=J2000)
10- 11 I2 min RAm Right ascension (ICRS, Epoch=J2000)
13- 16 F4.1 s RAs Right ascension (ICRS, Epoch=J2000)
19 A1 --- DE- Declination sign (ICRS, Epoch=J2000)
20- 21 I2 deg DEd Declination (ICRS, Epoch=J2000)
23- 24 I2 arcmin DEm Declination (ICRS, Epoch=J2000)
26- 27 I2 arcsec DEs Declination (ICRS, Epoch=J2000)
29- 32 F4.2 mag AV Absorption in the V band
34- 38 F5.2 mag V0mag Intrinsic V magnitude
40- 44 F5.2 mag c0 Intrinsic c0 index
46- 51 F6.2 mag (b-y)0 Intrinsic (b-y)0 colour
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- ID ID number
6- 10 I5 K Teff Effective temperature
12- 16 I5 K e_Teff ?=99 Error in effective temperature
19- 23 F5.2 [cm/s2] logg Logarithm of the surface gravity
26- 30 F5.2 [cm/s2] e_logg ?=99 Error in the logarithm of the surface
gravity
31- 37 I7 pc Dist Distance
38- 44 I7 pc e_Dist ?=99 Error in distance
46- 51 F6.2 mag VMAG Absolute magnitude
53- 58 F6.2 mag e_VMAG ?=99 Error absolute magnitude
60- 65 F6.2 mag AV Absorption in the V band
67- 72 F6.2 mag e_AV ?=99 Error in absorption in the V band
--------------------------------------------------------------------------------
Acknowledgements:
Maria Monguio, m.monguio(at)herts.ac.uk
(End) Patricia Vannier [CDS] 23-Feb-2017