J/AJ/139/1242 ALHAMBRA photometric system (Aparicio-Villegas+, 2010)
The ALHAMBRA photometric system.
Aparicio-Villegas T.A., Alfaro E.J., Cabrera-cano J., Moles M., Benitez N.,
Perea J., Del Olmo A., Fernandez-Soto A., Cristobal-Hornillos D.,
Husillos C., Aguerri J.A.L., Broadhurst T., Castander F.J., Cepa J.,
Cervino M., Delgado R.M.G., Infante L., Marquez I., Masegosa J.,
Martinez V.J., Prada F., Quintana J.M., Sanchez S.F.
<Astron. J., 139, 1242-1253 (2010)>
=2010AJ....139.1242V 2010AJ....139.1242V
ADC_Keywords: Photometry, CCD ; Stars, standard
Keywords: cosmology: observations - galaxies: distances and redshifts -
instrumentation: photometers - standards -
stars: fundamental parameters - techniques: photometric
Abstract:
This paper presents the characterization of the optical range of the
ALHAMBRA photometric system, a 20 contiguous, equal-width, medium-band
CCD system with wavelength coverage from 3500Å to 9700Å. The
photometric description of the system is done by presenting the full
response curve as a product of the filters, CCD, and atmospheric
transmission curves, and using some first- and second-order moments of
this response function. We also introduce the set of standard stars
that defines the system, formed by 31 classic spectrophotometric
standard stars which have been used in the calibration of other known
photometric systems, and 288 stars, flux calibrated homogeneously,
from the Next Generation Spectral Library (NGSL). Based on the NGSL,
we determine the transformation equations between Sloan Digital Sky
Survey ugriz photometry and the ALHAMBRA photometric system, in order
to establish some relations between both systems. Finally, we develop
and discuss a strategy to calculate the photometric zero points of the
different pointings in the ALHAMBRA project.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 70 20 Representative parameters of the ALHAMBRA
photometric system filters
table2.dat 140 31 ALHAMBRA AB magnitudes of the 31
spectrophotometric primary standard stars
table3.dat 140 288 ALHAMBRA AB magnitudes of the 288 primary
standard stars from the NGSL
(http://archive.stsci.edu/prepds/stisngsl/)
table7.dat 122 51 *Multi-instrument colors of the E/S0 galaxy template
table8.dat 122 51 *Multi-instrument colors of the Sbc galaxy template
table9.dat 122 51 *Multi-instrument colors of the Im galaxy template
table10.dat 122 51 *Multi-instrument colors of the SB2 galaxy template
table11.dat 122 51 *Multi-instrument colors of the SB3 galaxy template
table12.dat 122 51 *Multi-instrument colors of the Scd galaxy template
--------------------------------------------------------------------------------
Note on table*.dat: template from Benitez et al. (2000ApJ...536..571B 2000ApJ...536..571B)
in the ALHAMBRA system (AB mag) and SDSS r (AB mag).
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- Filter Filter name
7- 11 F5.1 nm lam.i Isophotal wavelength λi
defined in Equation (3) of the paper
13- 21 E9.4 cW/m2/nm F.lam Spectral flux in filter (erg/s/cm2/Å)
23- 27 F5.2 mag m(Vega) Magnitude of Vega in the AB scale
29- 33 F5.1 nm lam.m Wavelength-weighted average
35- 39 F5.1 nm c/nu.m Inverse of frequency-weighted average
41- 45 F5.1 nm lam.eff Effective wavelength λeff
defined in Equation (6) of the paper
47- 52 F6.4 --- sigma Root mean square (rms) fractional width σ
of the filter in Equation (7) of the paper
54- 59 F6.4 --- Q Flux sensitivity (integral of response curve
from Equation 10: ∫Sνd(lnν)
61- 64 F4.1 nm FWHM FWHM of the filter
66- 70 F5.1 0.1nm delta Effective band width δ from Eq. (11):
δ=2sqrt(2ln2)σλeff
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table[23].dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 20 A20 --- Star Star name
22- 26 F5.2 mag A366M ALHAMBRA A366M (373.8nm) AB magnitude
28- 32 F5.2 mag A394M ALHAMBRA A394M (398.5nm) AB magnitude
34- 38 F5.2 mag A425M ALHAMBRA A425M (430.9nm) AB magnitude
40- 44 F5.2 mag A457M ALHAMBRA A457M (456.8nm) AB magnitude
46- 50 F5.2 mag A491M ALHAMBRA A491M (500.8nm) AB magnitude
52- 56 F5.2 mag A522M ALHAMBRA A522M (522.4nm) AB magnitude
58- 62 F5.2 mag A551M ALHAMBRA A551M (551.0nm) AB magnitude
64- 68 F5.2 mag A581M ALHAMBRA A581M (581.1nm) AB magnitude
70- 74 F5.2 mag A613M ALHAMBRA A613M (613.4nm) AB magnitude
76- 80 F5.2 mag A646M ALHAMBRA A646M (650.8nm) AB magnitude
82- 86 F5.2 mag A678M ALHAMBRA A678M (678.1nm) AB magnitude
88- 92 F5.2 mag A708M ALHAMBRA A708M (707.9nm) AB magnitude
94- 98 F5.2 mag A739M ALHAMBRA A739M (739.1nm) AB magnitude
100-104 F5.2 mag A770M ALHAMBRA A770M (770.1nm) AB magnitude
106-110 F5.2 mag A802M ALHAMBRA A802M (802.4nm) AB magnitude
112-116 F5.2 mag A829M ALHAMBRA A829M (830.2nm) AB magnitude
118-122 F5.2 mag A861M ALHAMBRA A861M (861.5nm) AB magnitude
124-128 F5.2 mag A892M ? ALHAMBRA A892M (884.3nm) AB magnitude
130-134 F5.2 mag A921M ? ALHAMBRA A921M (936.2nm) AB magnitude
136-141 F6.3 mag A948M ? ALHAMBRA A948M (950.4nm) AB magnitude
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table[789].dat table1?.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 F4.2 --- z Redshift
6- 9 F4.2 mag A366M-r A366M-r ALHAMBRA-SDSS color index
11- 14 F4.2 mag A394M-r A394M-r ALHAMBRA-SDSS color index
16- 20 F5.2 mag A425M-r A425M-r ALHAMBRA-SDSS color index
22- 26 F5.2 mag A457M-r A457M-r ALHAMBRA-SDSS color index
28- 32 F5.2 mag A491M-r A491M-r ALHAMBRA-SDSS color index
34- 38 F5.2 mag A522M-r A522M-r ALHAMBRA-SDSS color index
40- 44 F5.2 mag A551M-r A551M-r ALHAMBRA-SDSS color index
46- 50 F5.2 mag A581M-r A581M-r ALHAMBRA-SDSS color index
52- 56 F5.2 mag A613M-r A613M-r ALHAMBRA-SDSS color index
58- 62 F5.2 mag A646M-r A646M-r ALHAMBRA-SDSS color index
64- 68 F5.2 mag A678M-r A678M-r ALHAMBRA-SDSS color index
70- 74 F5.2 mag A708M-r A708M-r ALHAMBRA-SDSS color index
76- 80 F5.2 mag A739M-r A739M-r ALHAMBRA-SDSS color index
82- 86 F5.2 mag A770M-r A770M-r ALHAMBRA-SDSS color index
88- 92 F5.2 mag A802M-r A802M-r ALHAMBRA-SDSS color index
94- 98 F5.2 mag A829M-r A829M-r ALHAMBRA-SDSS color index
100-104 F5.2 mag A861M-r A861M-r ALHAMBRA-SDSS color index
106-110 F5.2 mag A892M-r A892M-r ALHAMBRA-SDSS color index
112-116 F5.2 mag A921M-r A921M-r ALHAMBRA-SDSS color index
118-122 F5.2 mag A948M-r A948M-r ALHAMBRA-SDSS color index
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 17-May-2012