Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2505.12945 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866915292642279424 |
|---|---|
| author | Freckelton, Alix Violet Mortier, Annelies Bedell, Megan Morrell, Sam Naylor, Tim Buchhave, Lars A. Davies, Guy R. Hernández, J. I. González Klein, Baptiste de Mooij, Ernst J. W. Passegger, Vera Maria Quirrenbach, Andreas Roy, Arpita Santos, Nuno C. Sousa, Sérgio G. Mascareño, A. Suárez Tsantaki, Maria Zhao, Lily L. |
| author_facet | Freckelton, Alix Violet Mortier, Annelies Bedell, Megan Morrell, Sam Naylor, Tim Buchhave, Lars A. Davies, Guy R. Hernández, J. I. González Klein, Baptiste de Mooij, Ernst J. W. Passegger, Vera Maria Quirrenbach, Andreas Roy, Arpita Santos, Nuno C. Sousa, Sérgio G. Mascareño, A. Suárez Tsantaki, Maria Zhao, Lily L. |
| contents | 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 FGKM 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. Spectrosocpic 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 106K 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 SED fitting. The full gr8stars sample selection, including derived spectroscopic and photometric parameters, is made available through an interactive online database. We also perform a kinematic analysis to classify these stars according to their Galactic component. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_12945 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | gr8stars I: A homogeneous spectroscopic study of bright FGKM dwarfs and a public library of their high-resolution spectra Freckelton, Alix Violet Mortier, Annelies Bedell, Megan Morrell, Sam Naylor, Tim Buchhave, Lars A. Davies, Guy R. Hernández, J. I. González Klein, Baptiste de Mooij, Ernst J. W. Passegger, Vera Maria Quirrenbach, Andreas Roy, Arpita Santos, Nuno C. Sousa, Sérgio G. Mascareño, A. Suárez Tsantaki, Maria Zhao, Lily L. Solar and Stellar Astrophysics 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 FGKM 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. Spectrosocpic 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 106K 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 SED fitting. The full gr8stars sample selection, including derived spectroscopic and photometric parameters, is made available through an interactive online database. We also perform a kinematic analysis to classify these stars according to their Galactic component. |
| title | gr8stars I: A homogeneous spectroscopic study of bright FGKM dwarfs and a public library of their high-resolution spectra |
| topic | Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2505.12945 |