J/ApJS/258/24 H-band LC for 7 DEHVILS Milky Way Cepheids (Konchady+, 2022)
H-band light curves of Milky Way Cepheids via difference imaging.
Konchady T., Oelkers R.J., Jones D.O., Yuan W., Macri L.M., Peterson E.R.,
Riess A.G.
<Astrophys. J. Suppl. Ser., 258, 24 (2022)>
=2022ApJS..258...24K 2022ApJS..258...24K
ADC_Keywords: Stars, variable; Photometry, infrared; Photometry, HST
Keywords: Cepheid variable stars ; Light curves ; Photometry ;
HST photometry ; Near infrared astronomy
Abstract:
We present H-band light curves of Milky Way classical Cepheids
observed as part of the Dark Energy, H0, and peculiar Velocities
using Infrared Light from Supernovae survey with the Wide-Field
Infrared Camera on the United Kingdom Infrared Telescope. Due to the
crowded nature of these fields caused by defocusing the Camera, we
performed difference-imaging photometry by modifying a pipeline
originally developed to analyze images from the Transiting Exoplanet
Survey Satellite. We achieved a photometric precision in line with
expectations from photon statistics, reaching 0.01mag for 8≲H≲11mag.
We used the resulting Cepheid light curves to derive corrections to
"mean light" for random-phase Hubble Space Telescope observations in
F160W. We find good agreement with previous phase corrections based on
VI light curves from the literature, with a mean difference of
-1±6mmag.
Description:
The Dark Energy, H0, and peculiar Velocities using Infrared Light
from Supernovae (DEHVILS) survey using the Wide-Field Infrared Camera
(WFCAM) on the United Kingdom Infrared Telescope (UKIRT) targeted 12
Milky Way (MW) Cepheids. We present the analysis for seven of these
variables whose observations have been completed. Each target was
observed for 11-20 epochs spread over 2-3 months between 2020 May and
October.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 50 7 Milky Way Cepheids observed by the Dark Energy,
H0, and peculiar Velocities using Infrared Light
from Supernovae (DEHVILS) survey
table3.dat 31 224 Cepheid photometry
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
J/AJ/128/2239 : JHKs photometry of 92 LMC Cepheids (Persson+, 2004)
J/ApJS/193/12 : JHK photometry of Northern Galactic Cepheids (Monson+, 2011)
J/A+A/573/A100 : WFCAM Variable Star Catalog (Ferreira Lopes+, 2015)
J/A+A/576/A30 : NIR light-curve templates for classical Cepheids (Inno+, 2015)
J/AJ/149/117 : LMC infrared survey. I. Photometry of Cepheids (Macri+, 2015)
J/AJ/149/50 : Photometry of 105 variable stars from CSTAR (Oelkers+, 2015)
J/ApJ/809/77 : Transiting Exoplanet Survey Satellite (TESS) (Sullivan+, 2015)
J/ApJ/826/56 : HST/WFC3 obs. of Cepheids in SN Ia host gal. (Riess+, 2016)
J/AJ/156/102 : TESS Input Catalog & Candidate Target List (Stassun+, 2018)
J/ApJ/876/85 : HST observations for LMC Cepheids (Riess+, 2019)
J/ApJ/896/L43 : Cepheids HST amplitudes in V- and H-band (Riess+, 2020)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- ID Identifier
11- 12 I2 h RAh Hour of right ascension (J2000)
14- 15 I2 min RAm Minute of right ascension (J2000)
17- 20 F4.1 s RAs Second of right ascension (J2000)
22 A1 --- DE- Sign of declination (J2000)
23- 24 I2 deg DEd Degree of declination (J2000)
26- 27 I2 arcmin DEm Arcminute of declination (J2000)
29- 32 F4.1 arcsec DEs Arcsecond of declination (J2000)
34- 38 F5.3 mag Hmag [4.8/5.91] 2MASS H-band magnitude
40- 44 F5.3 mag e_Hmag [0.009/0.08] Uncertainty on the Hmag
46- 50 F5.3 [d] logP [0.56/1.17] log of period
from Riess+ 2021ApJ...908L...6R 2021ApJ...908L...6R
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- ID Cepheid ID
11- 19 F9.4 d MJD [8985.42/9153.43] Modified Julian Date
of observation (JD-2450000.5)
21- 25 F5.3 --- Phase Phase of observation (1)
27- 31 F5.3 mag Hmag [4.68/6.023] H-band magnitude (2)
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Note (1): Based on the periods listed in Table 1
Note (2): Difference-imaging analysis (DIA) magnitude + mean 2MASS magnitude
from Table 1; statistical uncertainty of 0.027mag for all lines
(see Section 3.3).
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 16-May-2022