School of Astronomy and Astrophysics, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK, Canadian Institute for Theoretical Astrophysics, University of Toronto, 60 St. George Street, Toronto, ON M5S 3H8, Canada, Dunlap Institute for Astronomy and Astrophysics, University of Toronto, 50 St. George Street, Toronto, ON M5S 3H4, Canada, David A. Dunlap Department for Astronomy and Astrophysics, University of Toronto, 50 St. George Street, Toronto, ON M5S 3H4, Canada
School of Astronomy and Astrophysics, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK, INAF – Astrophysics and Space Science Observatory Bologna, Via Gobetti 93/3, I-40129 Bologna, Italy
School of Astronomy and Astrophysics, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris, 5 place Jules Janssen, F-92195 Meudon, France
Instituto de Astrofísica de Canarias, E-38205, La Laguna, Tenerife, Spain, Dpto. de Astrofísica, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez, E-38206 La Laguna, Tenerife, Spain
IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France, AIM, CEA, CNRS, Université Paris-Saclay, Université Paris Diderot, Sorbonne Paris Cité, F-91191 Gif-sur-Yvette, France
Aix Marseille Univ, CNRS, CNES, LAM, 13388 Marseille Cedex 13, France, Istituto Nazionale Astrofisica di Padova – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, I-35122 Padova, Italy
Department of Astronomy, The Ohio State University, 140 W. 18th Ave., Columbus, OH 43210, USA
Department of Astronomy, Yale University, New Haven, CT 06520, USA
Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USA, The Observatories of the Carnegie Institution for Science, 813 Santa Barbara St., Pasadena, CA 91101, USA
Instituto de Astrofísica de Canarias, E-38205, La Laguna, Tenerife, Spain, Institut für Physik, Universität Graz, Universitätsplatz 5/II, A-8020 Graz Austria
Max-Planck Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany
Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, Rua das Estrelas, P-4150-762 Porto, Portugal
Research School of Astronomy and Astrophysics, Mount Stromlo Observatory, The Australian National University, Cotter Road, Weston Creek, ACT 2611, Australia
Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, Rua das Estrelas, P-4150-762 Porto, Portugal, Departamento de Física e Astronomia, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, s/n, P-4169-007 Porto, Portugal
Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam, Germany
Istituto Nazionale Astrofisica di Padova – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, I-35122 Padova, Italy
Department of Astronomy, The Ohio State University, Columbus, OH 43210, USA
Institute of Space Sciences (ICE, CSIC), Carrer de Can Magrans S/N, E-08193 Bellaterra, Spain, Institut d’Estudis Espacials de Cataluna (IEEC), Carrer Gran Capita 2, E-08034 Barcelona, Spain
Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
School of Physics, University of New South Wales, Kensington, NSW 2052, Australia
Institute for Astronomy, University of Hawai‘i, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
Carnegie Earth and Planet Laboratory, 5241 Broad Branch Road, N.W., Washington, DC 20015, USA, The Observatories of the Carnegie Institution for Science, 813 Santa Barbara St., Pasadena, CA 91101, USA
The NASA Transiting Exoplanet Survey Satellite (NASA-TESS) mission presents a treasure trove for understanding the stars it observes and the Milky Way, in which they reside. We present a first look at the prospects for Galactic and stellar astrophysics by performing initial asteroseismic analyses of bright (G < 11) red giant stars in the TESS southern continuous viewing zone (SCVZ). Using three independent pipelines, we detect νmax and Δν in 41 per cent of the 15 405 star parent sample (6388 stars), with consistency at a level of $$\sim \! 2{{\ \rm per\ cent}}$$ in νmax and $$\sim \! 5{{\ \rm per\ cent}}$$ in Δν. Based on this, we predict that seismology will be attainable for ∼3 × 105 giants across the whole sky and at least 104 giants with ≥1 yr of observations in the TESS-CVZs, subject to improvements in analysis and data reduction techniques. The best quality TESS-CVZ data, for 5574 stars where pipelines returned consistent results, provide high-quality power spectra across a number of stellar evolutionary states. This makes possible studies of, for example, the asymptotic giant branch bump. Furthermore, we demonstrate that mixed ℓ = 1 modes and rotational splitting are cleanly observed in the 1-yr data set. By combining TESS-CVZ data with TESS-HERMES, SkyMapper, APOGEE, and Gaia, we demonstrate its strong potential for Galactic archaeology studies, providing good age precision and accuracy that reproduces well the age of high [α/Fe] stars and relationships between mass and kinematics from previous studies based on e.g. Kepler. Better quality astrometry and simpler target selection than the Kepler sample makes this data ideal for studies of the local star formation history and evolution of the Galactic disc. These results provide a strong case for detailed spectroscopic follow-up in the CVZs to complement that which has been (or will be) collected by current surveys.
Mackereth, J. Ted, et al. "Prospects for Galactic and stellar astrophysics with asteroseismology of giant stars in the <i>TESS</i> continuous viewing zones and beyond." Monthly Notices of the Royal Astronomical Society, vol. 502, no. 2, Jan. 2021. https://doi.org/10.1093/mnras/stab098
Mackereth, J. Ted, Miglio, Andrea, Elsworth, Yvonne, Mosser, Benoit, Mathur, Savita, Garcia, Rafael A., Nardiello, Domenico, Hall, Oliver J., Vrard, Mathieu, Ball, Warrick H., Basu, Sarbani, Beaton, Rachael L., Beck, Paul G., Bergemann, Maria, Bossini, Diego, Casagrande, Luca, Campante, Tiago L., Chaplin, William J., ... Willett, Emma (2021). Prospects for Galactic and stellar astrophysics with asteroseismology of giant stars in the <i>TESS</i> continuous viewing zones and beyond. Monthly Notices of the Royal Astronomical Society, 502(2). https://doi.org/10.1093/mnras/stab098
Mackereth, J. Ted, Miglio, Andrea, Elsworth, Yvonne, et al., "Prospects for Galactic and stellar astrophysics with asteroseismology of giant stars in the <i>TESS</i> continuous viewing zones and beyond," Monthly Notices of the Royal Astronomical Society 502, no. 2 (2021), https://doi.org/10.1093/mnras/stab098
@article{osti_1805290,
author = {Mackereth, J. Ted and Miglio, Andrea and Elsworth, Yvonne and Mosser, Benoit and Mathur, Savita and Garcia, Rafael A. and Nardiello, Domenico and Hall, Oliver J. and Vrard, Mathieu and Ball, Warrick H. and others},
title = {Prospects for Galactic and stellar astrophysics with asteroseismology of giant stars in the <i>TESS</i> continuous viewing zones and beyond},
annote = {ABSTRACT The NASA Transiting Exoplanet Survey Satellite (NASA-TESS) mission presents a treasure trove for understanding the stars it observes and the Milky Way, in which they reside. We present a first look at the prospects for Galactic and stellar astrophysics by performing initial asteroseismic analyses of bright (G < 11) red giant stars in the TESS southern continuous viewing zone (SCVZ). Using three independent pipelines, we detect νmax and Δν in 41 per cent of the 15 405 star parent sample (6388 stars), with consistency at a level of $\sim \! 2{{\ \rm per\ cent}}$ in νmax and $\sim \! 5{{\ \rm per\ cent}}$ in Δν. Based on this, we predict that seismology will be attainable for ∼3 × 105 giants across the whole sky and at least 104 giants with ≥1 yr of observations in the TESS-CVZs, subject to improvements in analysis and data reduction techniques. The best quality TESS-CVZ data, for 5574 stars where pipelines returned consistent results, provide high-quality power spectra across a number of stellar evolutionary states. This makes possible studies of, for example, the asymptotic giant branch bump. Furthermore, we demonstrate that mixed ℓ = 1 modes and rotational splitting are cleanly observed in the 1-yr data set. By combining TESS-CVZ data with TESS-HERMES, SkyMapper, APOGEE, and Gaia, we demonstrate its strong potential for Galactic archaeology studies, providing good age precision and accuracy that reproduces well the age of high [α/Fe] stars and relationships between mass and kinematics from previous studies based on e.g. Kepler. Better quality astrometry and simpler target selection than the Kepler sample makes this data ideal for studies of the local star formation history and evolution of the Galactic disc. These results provide a strong case for detailed spectroscopic follow-up in the CVZs to complement that which has been (or will be) collected by current surveys.},
doi = {10.1093/mnras/stab098},
url = {https://www.osti.gov/biblio/1805290},
journal = {Monthly Notices of the Royal Astronomical Society},
issn = {ISSN 0035-8711},
number = {2},
volume = {502},
place = {United Kingdom},
publisher = {Oxford University Press},
year = {2021},
month = {01}}
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Fuel Cell Technologies Office
OSTI ID:
1805290
Journal Information:
Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 2 Vol. 502; ISSN 0035-8711