J/ApJ/923/157 A sample of carbon stars with Gaia EDR3 & 2MASS (Lee+, 2021)
A preliminary calibration of the JAGB method using Gaia EDR3.
Lee A.J., Freedman W.L., Madore B.F., Owens K.A., Sung Jang In
<Astrophys. J., 923, 157 (2021)>
=2021ApJ...923..157L 2021ApJ...923..157L
ADC_Keywords: Stars, carbon; Stars, distances; Photometry, infrared; Optical
Keywords: Parallax ; Stellar distance ; Distance indicators ;
Observational cosmology ; Asymptotic giant branch stars ;
Carbon stars ; Milky Way Galaxy ; Hubble constant
Abstract:
The recently developed J-region asymptotic giant branch (JAGB) method
has extraordinary potential as an extragalactic standard candle,
capable of calibrating the absolute magnitudes of locally accessible
Type Ia supernovae, thereby leading to an independent determination of
the Hubble constant. Using Gaia Early Data Release 3 (EDR3)
parallaxes, we calibrate the zero-point of the JAGB method, based on
the mean luminosity of a color-selected subset of carbon-rich AGB
stars. We identify Galactic carbon stars from the literature and use
their near-infrared photometry and Gaia EDR3 parallaxes to measure
their absolute J-band magnitudes. Based on these Milky Way parallaxes
we determine the zero-point of the JAGB method to be
MJ=-6.14±0.05(stat)±0.11(sys)mag. This Galactic calibration
serves as a consistency check on the JAGB zero-point, agreeing well
with previously published, independent JAGB calibrations based on
geometric, detached eclipsing binary distances to the LMC and SMC.
However, the JAGB stars used in this study suffer from the high
parallax uncertainties that afflict the bright and red stars in EDR3,
so we are not able to attain the higher precision of previous
calibrations, and ultimately will rely on future improved DR4 and DR5
releases.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 68 579 Carbon star catalog
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
I/350 : Gaia EDR3 (Gaia Collaboration, 2020)
I/352 : Distances to 1.47 billion stars in Gaia EDR3 (Bailer-Jones+, 2021)
I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)
J/MNRAS/369/751 : Near-infrared photometry of carbon stars (Whitelock+, 2006)
J/AJ/142/103 : Cool evolved stars in SAGE-SMC and SAGE-LMC (Boyer+, 2011)
J/AJ/143/36 : A catalog of Galactic infrared carbon stars (Chen+, 2012)
J/ApJ/780/59 : Araucaria project: eclipsing binaries in SMC (Graczyk+, 2014)
J/ApJ/816/49 : Spitzer/IRAC observations of SMC Cepheids (Scowcroft+, 2016)
J/ApJ/826/56 : HST/WFC3 obs. of Cepheids in SN Ia host gal. (Riess+, 2016)
J/ApJ/876/85 : HST observations for LMC Cepheids (Riess+, 2019)
J/MNRAS/495/2858 : Carbon stars as standard candles. I. (Ripoche+, 2020)
J/ApJ/906/125 : Carnegie-Chicago Hubble Program IX. TRGB in M106 (Jang+, 2021)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 19 I19 --- Gaia Gaia EDR3 (source_id)
21- 36 A16 --- 2MASS 2MASS ID (HHMMSSss+DDMMSSs; J2000)
38- 44 F7.4 mag Jmag [1/16.2] J magnitude in 2MASS phot. system (1)
46- 53 F8.4 mag J-K [0.9/7] J-K color index
55- 60 F6.3 mas plx [-2.42/3.62] Gaia EDR3 parallax
62- 68 F7.1 pc Dist [276/11432] Bailer-Jones+ (2021, I/352)
geometric distance
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Note (1): Data are from the Whitelock+ (2006, J/MNRAS/369/751) and
Chen & Yang (2012, J/AJ/143/36) carbon star catalogs, and are on the
2MASS photometric system. If a star was found in common between the
two catalogs, we averaged its flux.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 22-May-2023