Stellar Characterization and Radius Inflation of Hyades M-dwarf Stars from the APOGEE Survey

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Stellar Characterization and Radius Inflation of Hyades M-dwarf Stars from the APOGEE Survey

Wanderley, Fabio (författare): MCTIC, Observ Nacl, R Gen Jose Cristino, 77, BR-20921400 Rio De Janeiro, Brazil.

Cunha, Katia (författare): MCTIC, Observ Nacl, R Gen Jose Cristino, 77, BR-20921400 Rio De Janeiro, Brazil.;Univ Arizona, Steward Observ, 933 North Cherry Ave, Tucson, AZ 85721 USA.;Sorbonne Univ, Inst Astrophys Paris, UMR 7095, CNRS, 98bis Bd Arago, F-75014 Paris, France.

Souto, Diogo (författare): Univ Fed Sergipe, Dept Fis, Ave Marechal Rondon, S N, BR-49000000 Sao Cristovao, SE, Brazil.

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Smith, Verne V. (författare): Sorbonne Univ, Inst Astrophys Paris, UMR 7095, CNRS, 98bis Bd Arago, F-75014 Paris, France.;NSF's NOIRLab, 950 N Cherry Ave, Tucson, AZ 85719 USA.

Cao, Lyra (författare): Ohio State Univ, Dept Astron, Columbus, OH 43210 USA.

Pinsonneault, Marc (författare): Ohio State Univ, Dept Astron, Columbus, OH 43210 USA.

Allende Prieto, C. (författare): Inst Astrofis Canarias, E-38205 San Cristobal la Laguna, Tenerife, Spain.;Univ La Laguna, Dept Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain.

Covey, Kevin (författare): Western Washington Univ, Dept Phys & Astron, Bellingham, WA 98225 USA.

Masseron, Thomas (författare): Inst Astrofis Canarias, E-38205 San Cristobal la Laguna, Tenerife, Spain.;Univ La Laguna, Dept Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain.

Pascucci, Ilaria (författare): Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA. Vanderbilt Univ, Dept Phys & Astron, 6301 Stevenson Ctr Lane, Nashville, TN 37235 USA. Carleton Coll, Dept Phys & Astron, Northfield, MN 55057 USA. Apache Point Observ, Sunspot, NM 88349 USA.

Stassun, Keivan G. (författare): Vanderbilt Univ, Dept Phys & Astron, 6301 Stevenson Ctr Lane, Nashville, TN 37235 USA

Terrien, Ryan (författare): Carleton Coll, Dept Phys & Astron, Northfield, MN 55057 USA

Bergsten, Galen J. (författare): Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA. Vanderbilt Univ, Dept Phys & Astron, 6301 Stevenson Ctr Lane, Nashville, TN 37235 USA. Carleton Coll, Dept Phys & Astron, Northfield, MN 55057 USA. Apache Point Observ, Sunspot, NM 88349 USA.

Bizyaev, Dmitry (författare): New Mexico State Univ, Sunspot, NM 88349 USA. Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Moscow 119992, Russia. Univ Catolica Norte, Inst Astron, Ave Angamos 0610, Antofagasta, Chile. Malmö Univ, Mat Sci & Appl Math, SE-20506 Malmö, Sweden. Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA. New Mexico State Univ, Las Cruces, NM 88003 USA. Univ Bernardo OHiggins, Ctr Invest Astron, Ave Viel 1497, Santiago, Chile. Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 USA. Ctr Exoplanets & Habitable Worlds, 525 Davey Lab, University Pk, PA 16802 USA. Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA. Univ Andres Bello, Fac Ciencias Exactas, Dept Ciencias Fis, Fernandez Concha 700, Santiago, Chile. Vatican Observ, I-00120 Vatican, Italy. Univ Autonoma Mexico, Inst Astron, Ensenada, Mexico. Univ Washington, Dept Astron, Box 351580, Seattle, WA 98195 USA. Univ Colorado, Ctr Astrophys & Space Astron, Campus Box 389, Boulder, CO 80309 USA.

Fernandez-Trincado, Jose G. (författare): Univ Catolica Norte, Inst Astron, Ave Angamos 0610, Antofagasta, Chile

Jönsson, Henrik (författare): Malmö universitet,Institutionen för materialvetenskap och tillämpad matematik (MTM)

Hasselquist, Sten (författare): Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA

Holtzman, Jon A. (författare): New Mexico State Univ, Las Cruces, NM 88003 USA

Lane, Richard R. (författare): Univ Bernardo OHiggins, Ctr Invest Astron, Ave Viel 1497, Santiago, Chile

Mahadevan, Suvrath (författare): Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 USA; Ctr Exoplanets & Habitable Worlds, 525 Davey Lab, University Pk, PA 16802 USA

Majewski, Steven R. (författare): Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA

Minniti, Dante (författare): Univ Andres Bello, Fac Ciencias Exactas, Dept Ciencias Fis, Fernandez Concha 700, Santiago, Chile; Vatican Observ, I-00120 Vatican, Italy

Pan, Kaike (författare): New Mexico State Univ, Sunspot, NM 88349 USA. Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Moscow 119992, Russia. Univ Catolica Norte, Inst Astron, Ave Angamos 0610, Antofagasta, Chile. Malmö Univ, Mat Sci & Appl Math, SE-20506 Malmö, Sweden. Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA. New Mexico State Univ, Las Cruces, NM 88003 USA. Univ Bernardo OHiggins, Ctr Invest Astron, Ave Viel 1497, Santiago, Chile. Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 USA. Ctr Exoplanets & Habitable Worlds, 525 Davey Lab, University Pk, PA 16802 USA. Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA. Univ Andres Bello, Fac Ciencias Exactas, Dept Ciencias Fis, Fernandez Concha 700, Santiago, Chile. Vatican Observ, I-00120 Vatican, Italy. Univ Autonoma Mexico, Inst Astron, Ensenada, Mexico. Univ Washington, Dept Astron, Box 351580, Seattle, WA 98195 USA. Univ Colorado, Ctr Astrophys & Space Astron, Campus Box 389, Boulder, CO 80309 USA.

Serna, Javier (författare): Univ Autonoma Mexico, Inst Astron, Ensenada, Mexico

Sobeck, Jennifer (författare): Univ Washington, Dept Astron, Box 351580, Seattle, WA 98195 USA

Stringfellow, Guy S. (författare): Univ Colorado, Ctr Astrophys & Space Astron, Campus Box 389, Boulder, CO 80309 USA

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MCTIC, Observ Nacl, R Gen Jose Cristino, 77, BR-20921400 Rio De Janeiro, Brazil MCTIC, Observ Nacl, R Gen Jose Cristino, 77, BR-20921400 Rio De Janeiro, Brazil.;Univ Arizona, Steward Observ, 933 North Cherry Ave, Tucson, AZ 85721 USA.;Sorbonne Univ, Inst Astrophys Paris, UMR 7095, CNRS, 98bis Bd Arago, F-75014 Paris, France. (creator_code:org_t)

Institute of Physics (IOP), 2023
2023
Engelska.
Ingår i: Astrophysical Journal. - : Institute of Physics (IOP). - 0004-637X .- 1538-4357. ; 951:2

Relaterad länk:: https://doi.org/10.3...; visa fler...; https://mau.diva-por... (primary) (Raw object); https://urn.kb.se/re...; https://doi.org/10.3...; visa färre...

Tidskriftsartikel (refereegranskat)

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We present a spectroscopic analysis of a sample of 48 M-dwarf stars (0.2 M (& ODOT;) < M < 0.6 M (& ODOT;)) from the Hyades open cluster using high-resolution H-band spectra from the Sloan Digital Sky Survey/Apache Point Observatory Galactic Evolution Experiment (APOGEE) survey. Our methodology adopts spectrum synthesis with LTE MARCS model atmospheres, along with the APOGEE Data Release 17 line list, to determine effective temperatures, surface gravities, metallicities, and projected rotational velocities. The median metallicity obtained for the Hyades M dwarfs is [M/H] = 0.09 & PLUSMN; 0.03 dex, indicating a small internal uncertainty and good agreement with optical results for Hyades red giants. Overall, the median radii are larger than predicted by stellar models by 1.6% & PLUSMN; 2.3% and 2.4% & PLUSMN; 2.3%, relative to a MIST and DARTMOUTH isochrone, respectively. We emphasize, however, that these isochrones are different, and the fractional radius inflation for the fully and partially convective regimes have distinct behaviors depending on the isochrone. Using a MIST isochrone there is no evidence of radius inflation for the fully convective stars, while for the partially convective M dwarfs the radii are inflated by 2.7% & PLUSMN; 2.1%, which is in agreement with predictions from models that include magnetic fields. For the partially convective stars, rapid rotators present on average higher inflation levels than slow rotators. The comparison with SPOTS isochrone models indicates that the derived M-dwarf radii can be explained by accounting for stellar spots in the photosphere of the stars, with 76% of the studied M dwarfs having up to 20% spot coverage, and the most inflated stars with & SIM;20%-40% spot coverage.

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Stellar Characterization and Radius Inflation of Hyades M-dwarf Stars from the APOGEE Survey

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