J/MNRAS/440/L96 RR Lyrae AllWise photometry (Klein+, 2014)
Mid-infrared period-luminosity relations of RR Lyrae stars derived from the
AllWISE Data Release.
Klein C.R., Righards J.W., Butler N.R., Bloom J.S.
<Mon. Not. R. Astron. Soc. 440, L96 (2014)>
=2014MNRAS.440L..96K 2014MNRAS.440L..96K
ADC_Keywords: Stars, variable ; Photometry, infrared
Keywords: methods: statistical - stars: distances - stars: variables: RR Lyrae -
infrared: stars
Abstract:
We use photometry from the recent AllWISE Data Release of the
Wide-field Infrared Survey Explorer (WISE) of 129 calibration stars,
combined with prior distances obtained from the established
MV-[Fe/H] relation and Hubble Space Telescope trigonometric
parallax, to derive mid-infrared period-luminosity relations for
RR Lyrae pulsating variable stars. We derive relations in the W1, W2
and W3 wavebands (3.4, 4.6 and 12um, respectively), and for each of
the two main RR Lyrae sub-types (RRab and RRc). We report an error on
the period-luminosity relation slope for RRab stars of 0.2. We also
fit posterior distances for the calibration catalogue and find a
median fractional distance error of 0.8 per cent.
Description:
In this analysis, we make use of the most recent WISE data release,
AllWISE. The AllWISE Data Release (made public 2013 November 13, Cat.
II/328) combines the 4-Band Cryogenic Survey (main WISE mission
covering the full sky 1.2 times from 2010 January 7 to August 6), the
3-Band Cryogenic survey (first three wavebands, 30 per cent of the sky
from 2010 August 6 to September 29), and the NEOWISE post-cryogenic
survey (first two wavebands, covering 70 per cent of the sky from 2010
September 20 to 2011 February 1).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 115 129 Catalogue of calibration RR Lyrae stars
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See also:
II/328 : AllWISE Data Release (Cutri+ 2013)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Star name
10- 13 A4 --- Type RR Lyrae type: RRab or RRc
15 I1 --- n_Type [0/1] Blazhko affected? (1 for yes)
17- 22 F6.4 d Per [0.25/0.75] Period
24- 29 F6.3 mag W1mag ?=- WISE W1 magnitude
31- 35 F5.3 mag e_W1mag ?=- rms uncertainty on W1mag
37- 42 F6.3 mag W2mag ?=- WISE W2 magnitude
44- 48 F5.3 mag e_W2mag ?=- rms uncertainty on W2mag
50- 55 F6.3 mag W3mag ?=- WISE W3 magnitude
57- 61 F5.3 mag e_W3mag ?=- rms uncertainty on W3mag
63- 67 F5.3 mag AW1 [0.05/0.36]?=- W1 model amplitude
69- 73 F5.3 mag AW2 [0.05/0.36]?=- W2 model amplitude
75- 79 F5.3 mag AW3 [0.03/0.56]?=- W3 model amplitude
81- 86 F6.3 mag DMpr [7/12] Prior distance modulus
88- 92 F5.3 mag e_DMpr [0.07/0.25] rms uncertainty on DMpr
94- 99 F6.3 mag DMpo [7/12] Posterior distance modulus
101-105 F5.3 mag e_DMpo [0.01/0.08] rms uncertainty on DMpo
107-110 I4 pc Dist [254/2300] Distance
112-115 F4.1 pc e_Dist [1/50] rms uncertainty on Dist
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 16-Jan-2015