J/AJ/148/81 APASS BVgri photometry of RAVE stars. I. Data (Munari+, 2014)
APASS Landolt-Sloan BVgri photometry of RAVE stars.
I. Data, effective temperatures, and reddenings.
Munari U., Henden A., Frigo A., Zwitter T., Bienayme O., Bland-Hawthorn J.,
Boeche C., Freeman K.C., Gibson B.K., Gilmore G., Grebel E.K., Helmi A.,
Kordopatis G., Levine S.E., Navarro J.F., Parker Q.A., Reid W.,
Seabroke G.M., Siebert A., Siviero A., Smith T.C., Steinmetz M.,
Templeton M., Terrell D., Welch D.L., Williams M., Wyse R.F.G.
<Astron. J., 148, 81 (2014)>
=2014AJ....148...81M 2014AJ....148...81M
ADC_Keywords: Stars, nearby ; Photometry, UBV ; Photometry, ugriz ;
Effective temperatures ; Reddening
Keywords: catalogs - methods: data analysis - surveys - techniques: photometric
Abstract:
We provide AAVSO Photometric All-Sky Survey (APASS) photometry in the
Landolt BV and Sloan g'r'i' bands for all 425743 stars included in the
fourth RAVE Data Release. The internal accuracy of the APASS
photometry of RAVE stars, expressed as the error of the mean of data
obtained and separately calibrated over a median of four distinct
observing epochs and distributed between 2009 and 2013, is 0.013,
0.012, 0.012, 0.014, and 0.021mag for the B, V, g', r', and i' bands,
respectively. The equally high external accuracy of APASS photometry
has been verified on secondary Landolt and Sloan photometric standard
stars not involved in the APASS calibration process and on a large
body of literature data on field and cluster stars, confirming the
absence of offsets and trends. Compared with the Carlsberg Meridian
Catalog (CMC-15), APASS astrometry of RAVE stars is accurate to a
median value of 0.098arcsec. Brightness distribution functions for the
RAVE stars have been derived in all bands. APASS photometry of RAVE
stars, augmented by 2MASS JHK infrared data, has been χ2 fitted
to a densely populated synthetic photometric library designed to
widely explore temperature, surface gravity, metallicity, and
reddening. Resulting Teff and EB-V, computed over a range of
options, are provided and discussed, and will be kept updated in
response to future APASS and RAVE data releases. In the process, we
find that the reddening caused by a homogeneous slab of dust,
extending for 140pc on either side of the Galactic plane and
responsible for EB-Vpoles=0.036±0.002 at the Galactic poles,
is a suitable approximation of the actual reddening encountered at
Galactic latitudes|b|≥25°.
Description:
The BVg'r'i' photometric data of RAVE stars discussed in this paper
have been obtained as part of the ongoing AAVSO (American Association
of Variable Star Observers) Photometric All-Sky Survey (APASS; Henden
& Munari, 2014CoSka..43..518H 2014CoSka..43..518H; Henden et al. 2014, submitted). The
APASS photometric survey covers the whole sky, from North Pole to
South Pole, with ongoing observations from CTIO (Chile), for the
southern hemisphere, and New Mexico for the northern counterpart. At
both sites, a pair of twin, remotely controlled, small telescopes
obtain simultaneous CCD observations during dark- and gray-Moon time
over five optical bands: Landolt B, V and Sloan g', r', i'. The
telescopes are 20cm f/3.6 astrographs feeding Apogee U16m cameras.
The astrometric matching to the APASS catalog has been performed by
taking the positions and proper motions of RAVE stars as listed in DR4
(cat. III/272) and projecting them to the 2013 APASS epoch. The
matching radius has been set to 3.0arcsec. All 425743 RAVE DR4 stars
turned out to have APASS counterparts.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 284 377379 APASS photometric and astrometric data of RAVE
DR4 stars and their Teff and EB-V derived
under different options via χ2 fitting to
an extensive synthetic photometric library
--------------------------------------------------------------------------------
See also:
III/272 : RAVE 4th data release (Kordopatis+, 2013)
J/MNRAS/436/1343 : Calibration of RAVE distances with Hipparcos (Francis, 2013)
J/MNRAS/419/2844 : RAVE DR3 radial metallicity gradient (Coskunoglu+, 2012)
J/AJ/142/193 : RAVE stellar elemental abundances (DR1) (Boeche+, 2011)
J/ApJ/737/9 : RAVE spectroscopic data of stars in the thick disk
(Ruchti+, 2011)
J/A+A/522/A54 : Distance determination for RAVE stars. II. (Zwitter+, 2010)
J/AJ/140/184 : RAVE double-lined spectroscopic binaries (Matijevic+, 2010)
J/A+A/522/A54 : Distance determination for RAVE stars. II. (Zwitter+, 2010)
J/A+A/511/A90 : RAVE DR2 distance catalogue (Breddels+, 2010)
http://www.aavso.org/apass : APASS Web site
http://www.rave-survey.org/ : RAVE website
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 16 A16 --- RAVE RAVE name (JHHMMSS.d+DDMMSS; see III/272)
18- 27 F10.6 deg RAdeg APASS Right Ascension in decimal degrees (1)
29- 33 F5.3 arcsec e_RAdeg Error in Right Ascension
35- 44 F10.6 deg DEdeg APASS Declination in decimal degrees (1)
46- 50 F5.3 arcsec e_DEdeg Error in Declination
52- 54 I3 --- N [2/260] Number of independent photometric
nights the star was measured by APASS
56- 61 F6.3 mag Bmag [6.4/17.8]?=99.999 Landolt B magnitude
63- 68 F6.3 mag e_Bmag [-0.2/4.3]?=9.999 Error in Bmag (2)
70- 75 F6.3 mag Vmag [6.4/16.7] Landolt V band magnitude
77- 82 F6.3 mag e_Vmag [-0.1/4.8] Error in Vmag (2)
84- 89 F6.3 mag g'mag [6.8/19.8]?=99.999 Sloan g' magnitude
91- 96 F6.3 mag e_g'mag [-0.1/8.0]?=9.999 Error in g'mag (2)
98-103 F6.3 mag r'mag [6.2/16.6]?=99.999 Sloan r' magnitude
105-110 F6.3 mag e_r'mag [-0.1/5.5]?=9.999 Error in r'mag (2)
112-117 F6.3 mag i'mag [5.3/14.4]?=99.999 Sloan i' magnitude
119-124 F6.3 mag e_i'mag [-0.1/3.8]?=9.999 Error in i'mag (2)
126-130 I5 K Teff1 ?=-999 Effective temperature (Binney) (3)
132-135 I4 K e_Teff1 ?=-999 Uncertainty in Teff1 (4)
137-141 I5 K Teff2 ?=-999 Effective temperature (Zwitter) (5)
143-146 I4 K e_Teff2 ?=-999 Uncertainty in Teff2 (4)
148-152 I5 K Teff3 ?=-999 Effective temperature (kordo) (6)
154-157 I4 K e_Teff3 ?=-999 Uncertainty in Teff3 (4)
159-163 I5 K Teff4 ?=-999 Effective temperature (sparv) (7)
165-168 I4 K e_Teff4 ?=-999 Uncertainty in Teff4 (4)
170-174 I5 K Teff0 ?=-999 Effective temperature (no reddening)(8)
176-179 I4 K e_Teff0 ?=-999 Uncertainty in Teff0 (4)
181-185 I5 K Teff ?=-999 Computed effective temperature (9)
187-190 I4 K e_Teff ?=-999 Uncertainty in Teff (4)
192-199 F8.3 mag E(B-V)1 ?=-999 E(B-V) reddening (3)
201-208 F8.3 mag E(B-V)2 ?=-999 E(B-V) reddening (5)
210-217 F8.3 mag E(B-V) ?=-999 E(B-V) reddening (9)
219-226 F8.3 mag e_E(B-V) ?=-999 Uncertainty in E(B-V) (4)
228-235 F8.3 mag E(B-V)3 ?=-999 E(B-V) reddening (6)
237-244 F8.3 mag e_E(B-V)3 ?=-999 Uncertainty in E(B-V)3 (4)
246-253 F8.3 mag E(B-V)4 ?=-999 E(B-V) reddening (7)
255-262 F8.3 mag e_E(B-V)4 ?=-999 Uncertainty in E(B-V)4 (4)
264-284 A21 --- Name RAVE internal identifier
--------------------------------------------------------------------------------
Note (1): Equinox J2000, epoch 2013. APASS=AAVSO (American Association of
Variable Star Observers) Photometric All-Sky Survey (APASS;
Henden & Munari, 2014CoSka..43..518H 2014CoSka..43..518H; Henden et al. 2014, submitted).
Note (2): The σ of the N independent measurements. A negative value means
that the number of observations was lower than stated in N.
Note (3): By assuming the slab reddening corresponding to
Binney et al. (2014MNRAS.437..351B 2014MNRAS.437..351B) distance. By slab reddening, we mean
the reddening produced by the line of sight to the given star traversing
an homogeneous slab of interstellar dust, extending by d=140pc on either
sides of the Galactic plane (with the Sun centered on it), following the
standard RV=3.1 law and causing a total EB-Vpoles=0.036mag at both
Galactic poles. It is completely defined by the Galactic latitude and the
distance to the given star.
Note (4): Expressed as the rms of the five deepest points within the χ2
minimum.
Note (5): By assuming the slab reddening corresponding to
Zwitter et al. 2010 (cat. J/A+A/522/A54) distance.
Note (6): Computed by assuming the slab reddening corresponding to
Zwitter et al. 2010 (cat. J/A+A/522/A54) distance, and fixing the values
of log(g) and [M/H] to "kordo" values from RAVE DR4 (cat. III/272).
Note (7): Computed by assuming the slab reddening corresponding to
Zwitter et al. 2010 (cat. J/A+A/522/A54) distance, and fixing the values
of log(g) and [M/H] to "sparv" values from RAVE DR4 (cat. III/272).
Note (8): Computed by assuming null reddening.
Note (9): Computed by letting the χ2 to simultaneously fit Teff
and E(B-V).
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Sylvain Guehenneux [CDS] 02-Dec-2014