The GALAH survey: Effective temperature calibration from the InfraRed Flux Method in the Gaia system

Luca Casagrande; Jane Lin; Adam D. Rains; Fan Liu; Sven Buder; Jonathan Horner; Martin Asplund; Geraint F. Lewis; Sarah L. Martell; Thomas Nordlander; Dennis Stello; Yuan Sen Ting; Robert A. Wittenmyer; Joss Bland-Hawthorn; Andrew R. Casey; Gayandhi M. De Silva; Valentina D'Orazi; Ken C. Freeman; Michael R. Hayden; Janez Kos; Karin Lind; Katharine J. Schlesinger; Sanjib Sharma; Jeffrey D. Simpson; Daniel B. Zucker; Tomaž Zwitter

doi:10.1093/mnras/stab2304

The GALAH survey: Effective temperature calibration from the InfraRed Flux Method in the Gaia system

Luca Casagrande^*, Jane Lin, Adam D. Rains, Fan Liu, Sven Buder, Jonathan Horner, Martin Asplund, Geraint F. Lewis, Sarah L. Martell, Thomas Nordlander, Dennis Stello, Yuan Sen Ting, Robert A. Wittenmyer, Joss Bland-Hawthorn, Andrew R. Casey, Gayandhi M. De Silva, Valentina D'Orazi, Ken C. Freeman, Michael R. Hayden, Janez KosKarin Lind, Katharine J. Schlesinger, Sanjib Sharma, Jeffrey D. Simpson, Daniel B. Zucker, Tomaž Zwitter

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

69 Citations (Scopus)

Abstract

In order to accurately determine stellar properties, knowledge of the effective temperature of stars is vital. We implement Gaia and 2MASS photometry in the InfraRed Flux Method and apply it to over 360 000 stars across different evolutionary stages in the GALAH DR3 survey. We derive colour-effective temperature relations that take into account the effect of metallicity and surface gravity over the range 4000 K ≤ Teff ≤ 8000 K, from very metal-poor stars to supersolar metallicities. The internal uncertainty of these calibrations is of order 40-80 K depending on the colour combination used. Comparison against solar-twins, Gaia benchmark stars, and the latest interferometric measurements validates the precision and accuracy of these calibrations from F to early M spectral types. We assess the impact of various sources of uncertainties, including the assumed extinction law, and provide guidelines to use our relations. Robust solar colours are also derived.

Original language	English
Pages (from-to)	2684-2696
Number of pages	13
Journal	Monthly Notices of the Royal Astronomical Society
Volume	507
Issue number	2
DOIs	https://doi.org/10.1093/mnras/stab2304
Publication status	Published - 1 Oct 2021

Access to Document

10.1093/mnras/stab2304

Cite this

Casagrande, L., Lin, J., Rains, A. D., Liu, F., Buder, S., Horner, J., Asplund, M., Lewis, G. F., Martell, S. L., Nordlander, T., Stello, D., Ting, Y. S., Wittenmyer, R. A., Bland-Hawthorn, J., Casey, A. R., De Silva, G. M., D'Orazi, V., Freeman, K. C., Hayden, M. R., ... Zwitter, T. (2021). The GALAH survey: Effective temperature calibration from the InfraRed Flux Method in the Gaia system. Monthly Notices of the Royal Astronomical Society, 507(2), 2684-2696. https://doi.org/10.1093/mnras/stab2304

@article{efc54caa12c648eb9376c1057f399ec3,

title = "The GALAH survey: Effective temperature calibration from the InfraRed Flux Method in the Gaia system",

abstract = "In order to accurately determine stellar properties, knowledge of the effective temperature of stars is vital. We implement Gaia and 2MASS photometry in the InfraRed Flux Method and apply it to over 360 000 stars across different evolutionary stages in the GALAH DR3 survey. We derive colour-effective temperature relations that take into account the effect of metallicity and surface gravity over the range 4000 K ≤ Teff ≤ 8000 K, from very metal-poor stars to supersolar metallicities. The internal uncertainty of these calibrations is of order 40-80 K depending on the colour combination used. Comparison against solar-twins, Gaia benchmark stars, and the latest interferometric measurements validates the precision and accuracy of these calibrations from F to early M spectral types. We assess the impact of various sources of uncertainties, including the assumed extinction law, and provide guidelines to use our relations. Robust solar colours are also derived.",

keywords = "infrared: stars, stars: Hertzsprung-Russell and colour-magnitude diagrams, stars: abundances, stars: atmospheres, stars: fundamental parameters, techniques: photometric",

author = "Luca Casagrande and Jane Lin and Rains, {Adam D.} and Fan Liu and Sven Buder and Jonathan Horner and Martin Asplund and Lewis, {Geraint F.} and Martell, {Sarah L.} and Thomas Nordlander and Dennis Stello and Ting, {Yuan Sen} and Wittenmyer, {Robert A.} and Joss Bland-Hawthorn and Casey, {Andrew R.} and {De Silva}, {Gayandhi M.} and Valentina D'Orazi and Freeman, {Ken C.} and Hayden, {Michael R.} and Janez Kos and Karin Lind and Schlesinger, {Katharine J.} and Sanjib Sharma and Simpson, {Jeffrey D.} and Zucker, {Daniel B.} and Toma{\v z} Zwitter",

note = "Publisher Copyright: {\textcopyright} 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.",

year = "2021",

month = oct,

day = "1",

doi = "10.1093/mnras/stab2304",

language = "English",

volume = "507",

pages = "2684--2696",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press ",

number = "2",

}

Casagrande, L, Lin, J, Rains, AD, Liu, F, Buder, S, Horner, J, Asplund, M, Lewis, GF, Martell, SL, Nordlander, T, Stello, D, Ting, YS, Wittenmyer, RA, Bland-Hawthorn, J, Casey, AR, De Silva, GM, D'Orazi, V, Freeman, KC, Hayden, MR, Kos, J, Lind, K, Schlesinger, KJ, Sharma, S, Simpson, JD, Zucker, DB & Zwitter, T 2021, 'The GALAH survey: Effective temperature calibration from the InfraRed Flux Method in the Gaia system', Monthly Notices of the Royal Astronomical Society, vol. 507, no. 2, pp. 2684-2696. https://doi.org/10.1093/mnras/stab2304

TY - JOUR

T1 - The GALAH survey

T2 - Effective temperature calibration from the InfraRed Flux Method in the Gaia system

AU - Casagrande, Luca

AU - Lin, Jane

AU - Rains, Adam D.

AU - Liu, Fan

AU - Buder, Sven

AU - Horner, Jonathan

AU - Asplund, Martin

AU - Lewis, Geraint F.

AU - Martell, Sarah L.

AU - Nordlander, Thomas

AU - Stello, Dennis

AU - Ting, Yuan Sen

AU - Wittenmyer, Robert A.

AU - Bland-Hawthorn, Joss

AU - Casey, Andrew R.

AU - De Silva, Gayandhi M.

AU - D'Orazi, Valentina

AU - Freeman, Ken C.

AU - Hayden, Michael R.

AU - Kos, Janez

AU - Lind, Karin

AU - Schlesinger, Katharine J.

AU - Sharma, Sanjib

AU - Simpson, Jeffrey D.

AU - Zucker, Daniel B.

AU - Zwitter, Tomaž

PY - 2021/10/1

Y1 - 2021/10/1

N2 - In order to accurately determine stellar properties, knowledge of the effective temperature of stars is vital. We implement Gaia and 2MASS photometry in the InfraRed Flux Method and apply it to over 360 000 stars across different evolutionary stages in the GALAH DR3 survey. We derive colour-effective temperature relations that take into account the effect of metallicity and surface gravity over the range 4000 K ≤ Teff ≤ 8000 K, from very metal-poor stars to supersolar metallicities. The internal uncertainty of these calibrations is of order 40-80 K depending on the colour combination used. Comparison against solar-twins, Gaia benchmark stars, and the latest interferometric measurements validates the precision and accuracy of these calibrations from F to early M spectral types. We assess the impact of various sources of uncertainties, including the assumed extinction law, and provide guidelines to use our relations. Robust solar colours are also derived.

AB - In order to accurately determine stellar properties, knowledge of the effective temperature of stars is vital. We implement Gaia and 2MASS photometry in the InfraRed Flux Method and apply it to over 360 000 stars across different evolutionary stages in the GALAH DR3 survey. We derive colour-effective temperature relations that take into account the effect of metallicity and surface gravity over the range 4000 K ≤ Teff ≤ 8000 K, from very metal-poor stars to supersolar metallicities. The internal uncertainty of these calibrations is of order 40-80 K depending on the colour combination used. Comparison against solar-twins, Gaia benchmark stars, and the latest interferometric measurements validates the precision and accuracy of these calibrations from F to early M spectral types. We assess the impact of various sources of uncertainties, including the assumed extinction law, and provide guidelines to use our relations. Robust solar colours are also derived.

KW - infrared: stars

KW - stars: Hertzsprung-Russell and colour-magnitude diagrams

KW - stars: abundances

KW - stars: atmospheres

KW - stars: fundamental parameters

KW - techniques: photometric

UR - http://www.scopus.com/inward/record.url?scp=85114961773&partnerID=8YFLogxK

U2 - 10.1093/mnras/stab2304

DO - 10.1093/mnras/stab2304

M3 - Article

SN - 0035-8711

VL - 507

SP - 2684

EP - 2696

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

The GALAH survey: Effective temperature calibration from the InfraRed Flux Method in the Gaia system

Abstract

Access to Document

Other files and links

Fingerprint

Cite this