New H-band stellar spectral libraries for the SDSS-III/APOGEE survey

O. Zamora; D. A. García-Hernández; C. Allende Prieto; R. Carrera; L. Koesterke; B. Edvardsson; F. Castelli; B. Plez; D. Bizyaev; K. Cunha; A. E. García Pérez; B. Gustafsson; J. A. Holtzman; J. E. Lawler; S. R. Majewski; A. Manchado; Sz Mészáros; N. Shane; M. Shetrone; V. V. Smith; G. Zasowski

doi:10.1088/0004-6256/149/6/181

New H-band stellar spectral libraries for the SDSS-III/APOGEE survey

O. Zamora, D. A. García-Hernández, C. Allende Prieto, R. Carrera, L. Koesterke, B. Edvardsson, F. Castelli, B. Plez, D. Bizyaev, K. Cunha, A. E. García Pérez, B. Gustafsson, J. A. Holtzman, J. E. Lawler, S. R. Majewski, A. Manchado, Sz Mészáros, N. Shane, M. Shetrone, V. V. SmithG. Zasowski

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

92 Scopus citations

Abstract

The Sloan Digital Sky Survey-III (SDSS-III) Apache Point Observatory Galactic Evolution Experiment (APOGEE) has obtained high-resolution (R ∼ 22,500), high signal-to-noise ratio (>100) spectra in the H-band (∼1.5-1.7 μm) for about 146,000 stars in the Milky Way galaxy. We have computed spectral libraries with effective temperature (T_eff) ranging from 3500 to 8000 K for the automated chemical analysis of the survey data. The libraries, used to derive stellar parameters and abundances from the APOGEE spectra in the SDSS-III data release 12 (DR12), are based on ATLAS9 model atmospheres and the ASST spectral synthesis code. We present a second set of libraries based on MARCS model atmospheres and the spectral synthesis code Turbospectrum. The ATLAS9/ASS∈T (T_eff= 3500-8000 K) and MARCS/Turbospectrum (T_eff= 3500-5500 K) grids cover a wide range of metallicity (-2.5 ≤[M/H] ≤ +0.5 dex), surface gravity (0 ≤ log g ≤5 dex), microturbulence (0.5 ≤ χ ≤ 8 km s^-1), carbon (-1 ≤ [C/M] ≤ +1 dex), nitrogen (-1 ≤ [N/M] ≤+1 dex), and α-element (-1 ≤ [α/M] ≤ +1 dex) variations, having thus seven dimensions. We compare the ATLAS9/ASS∈T and MARCS/Turbospectrum libraries and apply both of them to the analysis of the observed H-band spectra of the Sun and the K2 giant Arcturus, as well as to a selected sample of well-known giant stars observed at very high resolution. The new APOGEE libraries are publicly available and can be employed for chemical studies in the H-band using other high-resolution spectrographs.

Original language	English (US)
Article number	181
Journal	Astronomical Journal
Volume	149
Issue number	6
DOIs	https://doi.org/10.1088/0004-6256/149/6/181
State	Published - Jun 1 2015
Externally published	Yes

Keywords

astrochemistry
radiative transfer
stars: atmospheres

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/0004-6256/149/6/181

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Zamora, O., García-Hernández, D. A., Prieto, C. A., Carrera, R., Koesterke, L., Edvardsson, B., Castelli, F., Plez, B., Bizyaev, D., Cunha, K., García Pérez, A. E., Gustafsson, B., Holtzman, J. A., Lawler, J. E., Majewski, S. R., Manchado, A., Mészáros, S., Shane, N., Shetrone, M., ... Zasowski, G. (2015). New H-band stellar spectral libraries for the SDSS-III/APOGEE survey. Astronomical Journal, 149(6), [181]. https://doi.org/10.1088/0004-6256/149/6/181

New H-band stellar spectral libraries for the SDSS-III/APOGEE survey. / Zamora, O.; García-Hernández, D. A.; Prieto, C. Allende; Carrera, R.; Koesterke, L.; Edvardsson, B.; Castelli, F.; Plez, B.; Bizyaev, D.; Cunha, K.; García Pérez, A. E.; Gustafsson, B.; Holtzman, J. A.; Lawler, J. E.; Majewski, S. R.; Manchado, A.; Mészáros, Sz; Shane, N.; Shetrone, M.; Smith, V. V.; Zasowski, G.

In: Astronomical Journal, Vol. 149, No. 6, 181, 01.06.2015.

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

Zamora, O, García-Hernández, DA, Prieto, CA, Carrera, R, Koesterke, L, Edvardsson, B, Castelli, F, Plez, B, Bizyaev, D, Cunha, K, García Pérez, AE, Gustafsson, B, Holtzman, JA, Lawler, JE, Majewski, SR, Manchado, A, Mészáros, S, Shane, N, Shetrone, M, Smith, VV & Zasowski, G 2015, 'New H-band stellar spectral libraries for the SDSS-III/APOGEE survey', Astronomical Journal, vol. 149, no. 6, 181. https://doi.org/10.1088/0004-6256/149/6/181

Zamora, O. ; García-Hernández, D. A. ; Prieto, C. Allende ; Carrera, R. ; Koesterke, L. ; Edvardsson, B. ; Castelli, F. ; Plez, B. ; Bizyaev, D. ; Cunha, K. ; García Pérez, A. E. ; Gustafsson, B. ; Holtzman, J. A. ; Lawler, J. E. ; Majewski, S. R. ; Manchado, A. ; Mészáros, Sz ; Shane, N. ; Shetrone, M. ; Smith, V. V. ; Zasowski, G. / New H-band stellar spectral libraries for the SDSS-III/APOGEE survey. In: Astronomical Journal. 2015 ; Vol. 149, No. 6.

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title = "New H-band stellar spectral libraries for the SDSS-III/APOGEE survey",

abstract = "The Sloan Digital Sky Survey-III (SDSS-III) Apache Point Observatory Galactic Evolution Experiment (APOGEE) has obtained high-resolution (R ∼ 22,500), high signal-to-noise ratio (>100) spectra in the H-band (∼1.5-1.7 μm) for about 146,000 stars in the Milky Way galaxy. We have computed spectral libraries with effective temperature (Teff) ranging from 3500 to 8000 K for the automated chemical analysis of the survey data. The libraries, used to derive stellar parameters and abundances from the APOGEE spectra in the SDSS-III data release 12 (DR12), are based on ATLAS9 model atmospheres and the ASST spectral synthesis code. We present a second set of libraries based on MARCS model atmospheres and the spectral synthesis code Turbospectrum. The ATLAS9/ASS∈T (Teff= 3500-8000 K) and MARCS/Turbospectrum (Teff= 3500-5500 K) grids cover a wide range of metallicity (-2.5 ≤[M/H] ≤ +0.5 dex), surface gravity (0 ≤ log g ≤5 dex), microturbulence (0.5 ≤ χ ≤ 8 km s-1), carbon (-1 ≤ [C/M] ≤ +1 dex), nitrogen (-1 ≤ [N/M] ≤+1 dex), and α-element (-1 ≤ [α/M] ≤ +1 dex) variations, having thus seven dimensions. We compare the ATLAS9/ASS∈T and MARCS/Turbospectrum libraries and apply both of them to the analysis of the observed H-band spectra of the Sun and the K2 giant Arcturus, as well as to a selected sample of well-known giant stars observed at very high resolution. The new APOGEE libraries are publicly available and can be employed for chemical studies in the H-band using other high-resolution spectrographs.",

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author = "O. Zamora and Garc{\'i}a-Hern{\'a}ndez, {D. A.} and Prieto, {C. Allende} and R. Carrera and L. Koesterke and B. Edvardsson and F. Castelli and B. Plez and D. Bizyaev and K. Cunha and {Garc{\'i}a P{\'e}rez}, {A. E.} and B. Gustafsson and Holtzman, {J. A.} and Lawler, {J. E.} and Majewski, {S. R.} and A. Manchado and Sz M{\'e}sz{\'a}ros and N. Shane and M. Shetrone and Smith, {V. V.} and G. Zasowski",

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AU - Zamora, O.

AU - García-Hernández, D. A.

AU - Prieto, C. Allende

AU - Carrera, R.

AU - Koesterke, L.

AU - Edvardsson, B.

AU - Castelli, F.

AU - Plez, B.

AU - Bizyaev, D.

AU - Cunha, K.

AU - García Pérez, A. E.

AU - Gustafsson, B.

AU - Holtzman, J. A.

AU - Lawler, J. E.

AU - Majewski, S. R.

AU - Manchado, A.

AU - Mészáros, Sz

AU - Shane, N.

AU - Shetrone, M.

AU - Smith, V. V.

AU - Zasowski, G.

PY - 2015/6/1

Y1 - 2015/6/1

N2 - The Sloan Digital Sky Survey-III (SDSS-III) Apache Point Observatory Galactic Evolution Experiment (APOGEE) has obtained high-resolution (R ∼ 22,500), high signal-to-noise ratio (>100) spectra in the H-band (∼1.5-1.7 μm) for about 146,000 stars in the Milky Way galaxy. We have computed spectral libraries with effective temperature (Teff) ranging from 3500 to 8000 K for the automated chemical analysis of the survey data. The libraries, used to derive stellar parameters and abundances from the APOGEE spectra in the SDSS-III data release 12 (DR12), are based on ATLAS9 model atmospheres and the ASST spectral synthesis code. We present a second set of libraries based on MARCS model atmospheres and the spectral synthesis code Turbospectrum. The ATLAS9/ASS∈T (Teff= 3500-8000 K) and MARCS/Turbospectrum (Teff= 3500-5500 K) grids cover a wide range of metallicity (-2.5 ≤[M/H] ≤ +0.5 dex), surface gravity (0 ≤ log g ≤5 dex), microturbulence (0.5 ≤ χ ≤ 8 km s-1), carbon (-1 ≤ [C/M] ≤ +1 dex), nitrogen (-1 ≤ [N/M] ≤+1 dex), and α-element (-1 ≤ [α/M] ≤ +1 dex) variations, having thus seven dimensions. We compare the ATLAS9/ASS∈T and MARCS/Turbospectrum libraries and apply both of them to the analysis of the observed H-band spectra of the Sun and the K2 giant Arcturus, as well as to a selected sample of well-known giant stars observed at very high resolution. The new APOGEE libraries are publicly available and can be employed for chemical studies in the H-band using other high-resolution spectrographs.

AB - The Sloan Digital Sky Survey-III (SDSS-III) Apache Point Observatory Galactic Evolution Experiment (APOGEE) has obtained high-resolution (R ∼ 22,500), high signal-to-noise ratio (>100) spectra in the H-band (∼1.5-1.7 μm) for about 146,000 stars in the Milky Way galaxy. We have computed spectral libraries with effective temperature (Teff) ranging from 3500 to 8000 K for the automated chemical analysis of the survey data. The libraries, used to derive stellar parameters and abundances from the APOGEE spectra in the SDSS-III data release 12 (DR12), are based on ATLAS9 model atmospheres and the ASST spectral synthesis code. We present a second set of libraries based on MARCS model atmospheres and the spectral synthesis code Turbospectrum. The ATLAS9/ASS∈T (Teff= 3500-8000 K) and MARCS/Turbospectrum (Teff= 3500-5500 K) grids cover a wide range of metallicity (-2.5 ≤[M/H] ≤ +0.5 dex), surface gravity (0 ≤ log g ≤5 dex), microturbulence (0.5 ≤ χ ≤ 8 km s-1), carbon (-1 ≤ [C/M] ≤ +1 dex), nitrogen (-1 ≤ [N/M] ≤+1 dex), and α-element (-1 ≤ [α/M] ≤ +1 dex) variations, having thus seven dimensions. We compare the ATLAS9/ASS∈T and MARCS/Turbospectrum libraries and apply both of them to the analysis of the observed H-band spectra of the Sun and the K2 giant Arcturus, as well as to a selected sample of well-known giant stars observed at very high resolution. The new APOGEE libraries are publicly available and can be employed for chemical studies in the H-band using other high-resolution spectrographs.

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KW - radiative transfer

KW - stars: atmospheres

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New H-band stellar spectral libraries for the SDSS-III/APOGEE survey

Abstract

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