K-band spectroscopic metallicities and temperatures of M-dwarf stars

Bárbara Rojas-Ayala

Resultado de la investigación: Conference contribution

Resumen

I present the metallicity and effective temperature techniques developed for M dwarf stars by Rojas-Ayala et al. (2010, 2012). These techniques are based on absorption features present in the modest resolution K-band spectra (R∼2700) of M dwarfs and have been calibrated using FGK+M dwarf pairs and synthetic atmosphere models. The H2O-K2 index seems to overestimate the effective temperatures of M dwarfs when compared to interferometric measurements. The metallicity distribution of the M dwarf host candidates by the Kepler Mission hints that jovian-size planets form preferentially around solar and super-solar metallicity environments, while small rocky planet host exhibit a wide range of metallicities, just like in their solar-type counterparts.

Idioma originalEnglish
Título de la publicación alojadaHot Planets and Cool Stars
Volumen47
DOI
EstadoPublished - 2013
EventoConference on Hot Planets and Cool Stars - Garching, Germany
Duración: 12 nov 201216 nov 2012

Other

OtherConference on Hot Planets and Cool Stars
PaísGermany
CiudadGarching
Período12/11/1216/11/12

Huella dactilar

dwarf stars
M stars
extremely high frequencies
metallicity
planets
Kepler mission
temperature
atmospheres

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Citar esto

Rojas-Ayala, B. (2013). K-band spectroscopic metallicities and temperatures of M-dwarf stars. En Hot Planets and Cool Stars (Vol. 47). [09004] https://doi.org/10.1051/epjconf/20134709004
Rojas-Ayala, Bárbara. / K-band spectroscopic metallicities and temperatures of M-dwarf stars. Hot Planets and Cool Stars. Vol. 47 2013.
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abstract = "I present the metallicity and effective temperature techniques developed for M dwarf stars by Rojas-Ayala et al. (2010, 2012). These techniques are based on absorption features present in the modest resolution K-band spectra (R∼2700) of M dwarfs and have been calibrated using FGK+M dwarf pairs and synthetic atmosphere models. The H2O-K2 index seems to overestimate the effective temperatures of M dwarfs when compared to interferometric measurements. The metallicity distribution of the M dwarf host candidates by the Kepler Mission hints that jovian-size planets form preferentially around solar and super-solar metallicity environments, while small rocky planet host exhibit a wide range of metallicities, just like in their solar-type counterparts.",
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Rojas-Ayala, B 2013, K-band spectroscopic metallicities and temperatures of M-dwarf stars. En Hot Planets and Cool Stars. vol. 47, 09004, Conference on Hot Planets and Cool Stars, Garching, Germany, 12/11/12. https://doi.org/10.1051/epjconf/20134709004

K-band spectroscopic metallicities and temperatures of M-dwarf stars. / Rojas-Ayala, Bárbara.

Hot Planets and Cool Stars. Vol. 47 2013. 09004.

Resultado de la investigación: Conference contribution

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