gr8stars – I. A homogeneous spectroscopic study of bright FGKM dwarfs and a public library of their high-resolution spectra
ABSTRACT As the fields of stellar and exoplanetary study grow and revolutionary new detection instruments are created, it is imperative that a homogeneous, precise source of stellar parameters is available. This first work of the gr8stars collaboration presents the all-sky magnitude limited sample of 5645 bright F,G,K, and M type dwarfs, along with homogeneously derived spectroscopic parameters of a subset of 1716 targets visible from the Northern hemisphere. We have collected high-resolution archival and new spectra from several instruments. Spectroscopic parameters are determined using the PAWS pipeline, employing both the curve-of-growth equivalent width method, and the spectral synthesis method. We achieve median uncertainties of 106 K in stellar effective temperature, 0.08 dex in surface gravity, and 0.03 dex in metallicity. This paper also presents photometric stellar parameters for these dwarfs, determined using spectral energy distribution fitting. The full gr8stars sample selection, including derived spectroscopic and photometric parameters, is made available through an interactive online data base. We also perform a kinematic analysis to classify these stars according to their Galactic component.
Authors
- V. M. Passegger (ORCID: https://orcid.org/0000-0002-8569-7243)
- Annelies Mortier (ORCID: https://orcid.org/0000-0001-7254-4363)
- Baptiste Klein (ORCID: https://orcid.org/0000-0003-0637-5236)
- Ernst de Mooij (ORCID: https://orcid.org/0000-0001-6391-9266)
- A. Suárez Mascareño (ORCID: https://orcid.org/0000-0002-3814-5323)
- Arpita Roy (ORCID: https://orcid.org/0000-0001-8127-5775)
- G. R. Davies (ORCID: https://orcid.org/0000-0002-4290-7351)
- Sam Morrell (ORCID: https://orcid.org/0000-0001-6352-5312)
- Lars A. Buchhave (ORCID: https://orcid.org/0000-0003-1605-5666)
- Megan Bedell (ORCID: https://orcid.org/0000-0001-9907-7742)
- N. C. Santos (ORCID: https://orcid.org/0000-0003-4422-2919)
- Tim Naylor (ORCID: https://orcid.org/0000-0002-0506-8501)
- J. I. Gónzalez Hernández (ORCID: https://orcid.org/0000-0002-0264-7356)
- M. Tsantaki (ORCID: https://orcid.org/0000-0002-0552-2313)
- A. Quirrenbach (ORCID: https://orcid.org/0000-0002-3302-1962)
- Alix Violet Freckelton (ORCID: https://orcid.org/0009-0007-1053-0004)
- S. G. Sousa (ORCID: https://orcid.org/0000-0001-9047-2965)
- Li-Chen Zhao
Institutions
- Queen's University Belfast (GB)
- Universidad de La Laguna (ES)
- Universität Hamburg (DE)
- Universidade do Porto (PT)
- Heidelberg University (DE)
- University of Exeter (GB)
- Arcetri Astrophysical Observatory (IT)
- University of Oxford (GB)
- University of Chicago (US)
- Institute of Astrophysics and Space Sciences (PT)
- Instituto de Astrofísica de Canarias (ES)
- Hamburger Fern-Hochschule (DE)
- Flatiron Health (United States) (US)
- Astronomical Observatory (RS)
- National Astronomical Observatory of Japan (JP)
- Flatiron Institute (US)
- University of Birmingham (GB)
- Technical University of Denmark (DK)
Publication Details
- Journal
- Monthly Notices of the Royal Astronomical Society
- Published
- 2025-05-22
- DOI
- https://doi.org/10.1093/mnras/staf825
- Citations
- 1
- Primary Topic
- Stellar, planetary, and galactic studies
- Type
- article
- Field-Weighted Citation Impact
- 1.15
Funders
- National Aeronautics and Space Administration
- Aarhus Universitet
- Space Telescope Science Institute
- UK Research and Innovation
- Ministerio de Ciencia, Innovación y Universidades
- Flatiron Health
- European Commission
- Universitetet i Oslo
- Háskóli Íslands
- Turun Yliopisto
- Stockholms Universitet
- Science and Technology Facilities Council
- Fundação para a Ciência e a Tecnologia