J/A+A/522/A54 Distance determination for RAVE stars. II. (Zwitter+, 2010)
Distance determination for RAVE stars using stellar models.
II. Most likely values assuming a standard stellar evolution scenario.
Zwitter T., Matijevic G., Breddels M.A., Smith M.C., Helmi A.,
Munari U., Bienayme O., Binney J., Bland-Hawthorn J., Boeche C.,
Brown A.G.A., Campbell R., Freeman K. C., Fulbright J., Gibson B.,
Gilmore G., Grebel E. K., Navarro J.F., Parker Q.A., Seabroke G.M.,
Siebert A., Siviero A., Steinmetz M., Watson F.G., Williams M.,
Wyse R.F.G.
<Astron. Astrophys. 522, A54 (2010)>
=2010A&A...522A..54Z 2010A&A...522A..54Z
ADC_Keywords: Surveys ; Stars, nearby ; Proper motions ; Stars, distances
Keywords: stars: distances - catalogs - surveys - Galaxy: structure -
Galaxy: stellar content - stars: statistics
Abstract:
The RAdial Velocity Experiment (RAVE) is a spectroscopic survey of the
Milky Way which already collected over 400000 spectra of ∼330000
different stars. We use the subsample of spectra with
spectroscopically determined values of stellar parameters to determine
the distances to these stars. The list currently contains 235064 high
quality spectra which show no peculiarities and belong to 210872
different stars. The numbers will grow as the RAVE survey progresses.
The distances are determined with a method based on the work by
Breddels et al. (2010, Cat. J/A+A/511/A90). Here we assume that the
star undergoes a standard stellar evolution and that its spectrum
shows no peculiarities. The refinements include: the use of either of
the three isochrone sets, a better account of the stellar ages and
masses, use of more realistic errors of stellar parameter values, and
application to a larger dataset. The derived distances of both dwarfs
and giants match within ∼21% to the astrometric distances of Hipparcos
stars and to the distances of observed members of open and globular
clusters. Multiple observations of a fraction of RAVE stars show that
repeatability of the derived distances is even better, with half of
the objects showing a distance scatter of ≤11%.
RAVE dwarfs are ∼300pc from the Sun, and giants are at distances of 1
to 2kpc, and up to 10kpc. This places the RAVE dataset between the
more local Geneva-Copenhagen survey and the more distant and fainter
SDSS sample. As such it is ideal to address some of the fundamental
questions of Galactic structure and evolution in the pre-Gaia era.
Individual applications are left to separate papers, here we show that
the full 6-dimensional information on position and velocity is
accurate enough to discuss the vertical structure and kinematic
properties of the thin and thick disks.
Description:
Spectrophotometric distance moduli to ∼16000 stars in the Milky Way
southern hemisphere calculated from spectroscopic stellar parameters
as determined by the RAVE spectroscopic survey using the 6dF
instrument at the AAO.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 230 16052 Catalog of distance moduli calculated with three sets
of isochrones and for two sets of stellar parameters
and their assumed errors for 15386 stars
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
III/257 : RAVE second data release (DR2) (Zwitter+, 2008)
J/A+A/511/A90 : RAVE DR2 distance catalogue (Breddels+, 2010)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 16 A16 --- Name Target designation
18- 29 F12.8 deg RAdeg Right ascension in decimal degrees (J2000.0)
31- 42 F12.8 deg DEdeg Declination in decimal degrees (J2000.0)
44- 49 F6.1 km/s HRV Heliocentric radial velocity
51- 56 F6.1 km/s e_HRV Formal HRV error
58- 63 F6.1 mas/yr pmRA ?=9999.9 Proper motion in RA
65- 70 F6.1 mas/yr e_pmRA ?=9999.9 Error proper motion in RA
72- 77 F6.1 mas/yr pmDE ?=9999.9 Proper motion in DE
79- 84 F6.1 mas/yr e_pmDE ?=9999.9 Error proper motion in DE
86- 91 F6.3 mag Jmag 2MASS J apparent magnitude
94- 99 F6.3 mag Kmag 2MASS Ks apparent magnitude
101-108 A8 "YYYYMMDD" ObsDate Date of observation
110-119 A10 --- Field Name of RAVE field
121-123 I3 --- FibNum [1/150] Fiber number
125-130 I6 K Teff Effective temperature
133-136 F4.2 [cm/s2] logg Surface gravity
138-142 F5.2 [Sun] MH Calibrated metallicity [M/H]
144-149 F6.2 --- SN Signal to noise ratio per pixel
152-157 F6.3 mag muYY Distance modulus (using YY isochrones and
DR2 values of stellar parameters with their
DR2 errors)
160-165 F6.3 mag e_muYY Formal error in muYY
169-174 F6.3 mag muDar Distance modulus (using Dartmouth isochrones
and DR2 values of stellar parameters with
their DR2 errors)
177-182 F6.3 mag e_muDar Formal error in muDar
185-190 F6.3 mag muPad Distance modulus (using Padova isochrones
and DR2 values of stellar parameters with
their DR2 errors)
193-198 F6.3 mag e_muPad Formal error in muPad
201-206 F6.3 mag muPN Distance modulus (using Padova isochrones
and DR3 values of stellar parameters with
their DR2 errors)
209-214 F6.3 mag e_muPN Formal error in muPN
217-222 F6.3 mag muPNR Distance modulus (using Padova isochrones
and DR3 values of stellar parameters with
errors from repeated observations)
225-230 F6.3 mag e_muPNR Formal error in muPNR
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Acknowledgements:
Tomaz Zwitter, tomaz.zwitter(at)fmf.uni-lj.si
References:
Breddels et al., Paper I 2010A&A...511A..90B 2010A&A...511A..90B, Cat. J/A+A/511/A90
(End) Patricia Vannier [CDS] 18-Nov-2010