K-band spectroscopic metallicities and temperatures of M-dwarf stars
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 s...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2013-04-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20134709004 |
| _version_ | 1819280078203256832 |
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| author | Rojas-Ayala Bárbara |
| author_facet | Rojas-Ayala Bárbara |
| author_sort | Rojas-Ayala Bárbara |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-24T00:38:04Z |
| format | Article |
| id | doaj.art-37426509216448a4b013133ebb9e04a9 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-24T00:38:04Z |
| publishDate | 2013-04-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-37426509216448a4b013133ebb9e04a92022-12-21T17:24:02ZengEDP SciencesEPJ Web of Conferences2100-014X2013-04-01470900410.1051/epjconf/20134709004K-band spectroscopic metallicities and temperatures of M-dwarf starsRojas-Ayala BárbaraI 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.http://dx.doi.org/10.1051/epjconf/20134709004 |
| spellingShingle | Rojas-Ayala Bárbara K-band spectroscopic metallicities and temperatures of M-dwarf stars EPJ Web of Conferences |
| title | K-band spectroscopic metallicities and temperatures of M-dwarf stars |
| title_full | K-band spectroscopic metallicities and temperatures of M-dwarf stars |
| title_fullStr | K-band spectroscopic metallicities and temperatures of M-dwarf stars |
| title_full_unstemmed | K-band spectroscopic metallicities and temperatures of M-dwarf stars |
| title_short | K-band spectroscopic metallicities and temperatures of M-dwarf stars |
| title_sort | k band spectroscopic metallicities and temperatures of m dwarf stars |
| url | http://dx.doi.org/10.1051/epjconf/20134709004 |
| work_keys_str_mv | AT rojasayalabarbara kbandspectroscopicmetallicitiesandtemperaturesofmdwarfstars |