The Sloan Digital Sky Survey data release 7 spectroscopic M DWARF catalog. I. data

Andrew A. West; Dylan P. Morgan; John J. Bochanski; Jan Marie Andersen; Keaton J. Bell; Adam F. Kowalski; James R.A. Davenport; Suzanne L. Hawley; Sarah J. Schmidt; David Bernat; Eric J. Hilton; Philip Muirhead; Kevin R. Covey; Brbara Rojas-Ayala; Everett Schlawin; Mary Gooding; Kyle Schluns; Saurav Dhital; J. Sebastian Pineda; David O. Jones

doi:10.1088/0004-6256/141/3/97

The Sloan Digital Sky Survey data release 7 spectroscopic M DWARF catalog. I. data

Andrew A. West, Dylan P. Morgan, John J. Bochanski, Jan Marie Andersen, Keaton J. Bell, Adam F. Kowalski, James R.A. Davenport, Suzanne L. Hawley, Sarah J. Schmidt, David Bernat, Eric J. Hilton, Philip Muirhead, Kevin R. Covey, Brbara Rojas-Ayala, Everett Schlawin, Mary Gooding, Kyle Schluns, Saurav Dhital, J. Sebastian Pineda, David O. Jones

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269 Scopus citations

Abstract

We present a spectroscopic catalog of 70,841 visually inspected M dwarfs from the seventh data release of the Sloan Digital Sky Survey. For each spectrum, we provide measurements of the spectral type, a number of molecular band heads, and the Hα, Hβ, Hγ, Hδ, and Ca II K emission lines. In addition, we calculate the metallicity-sensitive parameter ζ and identify a relationship between ζ and the g - r and r - z colors of M dwarfs. We assess the precision of our spectral types (which were assigned by individual examination), review the bulk attributes of the sample, and examine the magnetic activity properties of M dwarfs, in particular those traced by the higher order Balmer transitions. Our catalog is cross-matched to Two Micron All Sky Survey infrared data, and contains photometric distances for each star. Finally, we identify eight new late-type M dwarfs that are possibly within 25pc of the Sun. Future studies will use these data to thoroughly examine magnetic activity and kinematics in late-type M dwarfs and examine the chemical and dynamical history of the local Milky Way.

Original language	English (US)
Article number	97
Journal	Astronomical Journal
Volume	141
Issue number	3
DOIs	https://doi.org/10.1088/0004-6256/141/3/97
State	Published - Mar 2011
Externally published	Yes

Keywords

Galaxy: kinematics and dynamics
brown dwarfs
stars: abundances
stars: activity
stars: late-type
stars: low-mass

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/0004-6256/141/3/97

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West, A. A., Morgan, D. P., Bochanski, J. J., Andersen, J. M., Bell, K. J., Kowalski, A. F., Davenport, J. R. A., Hawley, S. L., Schmidt, S. J., Bernat, D., Hilton, E. J., Muirhead, P., Covey, K. R., Rojas-Ayala, B., Schlawin, E., Gooding, M., Schluns, K., Dhital, S., Pineda, J. S., & Jones, D. O. (2011). The Sloan Digital Sky Survey data release 7 spectroscopic M DWARF catalog. I. data. Astronomical Journal, 141(3), Article 97. https://doi.org/10.1088/0004-6256/141/3/97

West, AA, Morgan, DP, Bochanski, JJ, Andersen, JM, Bell, KJ, Kowalski, AF, Davenport, JRA, Hawley, SL, Schmidt, SJ, Bernat, D, Hilton, EJ, Muirhead, P, Covey, KR, Rojas-Ayala, B, Schlawin, E, Gooding, M, Schluns, K, Dhital, S, Pineda, JS & Jones, DO 2011, 'The Sloan Digital Sky Survey data release 7 spectroscopic M DWARF catalog. I. data', Astronomical Journal, vol. 141, no. 3, 97. https://doi.org/10.1088/0004-6256/141/3/97

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title = "The Sloan Digital Sky Survey data release 7 spectroscopic M DWARF catalog. I. data",

abstract = "We present a spectroscopic catalog of 70,841 visually inspected M dwarfs from the seventh data release of the Sloan Digital Sky Survey. For each spectrum, we provide measurements of the spectral type, a number of molecular band heads, and the Hα, Hβ, Hγ, Hδ, and Ca II K emission lines. In addition, we calculate the metallicity-sensitive parameter ζ and identify a relationship between ζ and the g - r and r - z colors of M dwarfs. We assess the precision of our spectral types (which were assigned by individual examination), review the bulk attributes of the sample, and examine the magnetic activity properties of M dwarfs, in particular those traced by the higher order Balmer transitions. Our catalog is cross-matched to Two Micron All Sky Survey infrared data, and contains photometric distances for each star. Finally, we identify eight new late-type M dwarfs that are possibly within 25pc of the Sun. Future studies will use these data to thoroughly examine magnetic activity and kinematics in late-type M dwarfs and examine the chemical and dynamical history of the local Milky Way.",

keywords = "Galaxy: kinematics and dynamics, brown dwarfs, stars: abundances, stars: activity, stars: late-type, stars: low-mass",

author = "West, {Andrew A.} and Morgan, {Dylan P.} and Bochanski, {John J.} and Andersen, {Jan Marie} and Bell, {Keaton J.} and Kowalski, {Adam F.} and Davenport, {James R.A.} and Hawley, {Suzanne L.} and Schmidt, {Sarah J.} and David Bernat and Hilton, {Eric J.} and Philip Muirhead and Covey, {Kevin R.} and Brbara Rojas-Ayala and Everett Schlawin and Mary Gooding and Kyle Schluns and Saurav Dhital and Pineda, {J. Sebastian} and Jones, {David O.}",

year = "2011",

month = mar,

doi = "10.1088/0004-6256/141/3/97",

language = "English (US)",

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T1 - The Sloan Digital Sky Survey data release 7 spectroscopic M DWARF catalog. I. data

AU - West, Andrew A.

AU - Morgan, Dylan P.

AU - Bochanski, John J.

AU - Andersen, Jan Marie

AU - Bell, Keaton J.

AU - Kowalski, Adam F.

AU - Davenport, James R.A.

AU - Hawley, Suzanne L.

AU - Schmidt, Sarah J.

AU - Bernat, David

AU - Hilton, Eric J.

AU - Muirhead, Philip

AU - Covey, Kevin R.

AU - Rojas-Ayala, Brbara

AU - Schlawin, Everett

AU - Gooding, Mary

AU - Schluns, Kyle

AU - Dhital, Saurav

AU - Pineda, J. Sebastian

AU - Jones, David O.

PY - 2011/3

Y1 - 2011/3

N2 - We present a spectroscopic catalog of 70,841 visually inspected M dwarfs from the seventh data release of the Sloan Digital Sky Survey. For each spectrum, we provide measurements of the spectral type, a number of molecular band heads, and the Hα, Hβ, Hγ, Hδ, and Ca II K emission lines. In addition, we calculate the metallicity-sensitive parameter ζ and identify a relationship between ζ and the g - r and r - z colors of M dwarfs. We assess the precision of our spectral types (which were assigned by individual examination), review the bulk attributes of the sample, and examine the magnetic activity properties of M dwarfs, in particular those traced by the higher order Balmer transitions. Our catalog is cross-matched to Two Micron All Sky Survey infrared data, and contains photometric distances for each star. Finally, we identify eight new late-type M dwarfs that are possibly within 25pc of the Sun. Future studies will use these data to thoroughly examine magnetic activity and kinematics in late-type M dwarfs and examine the chemical and dynamical history of the local Milky Way.

AB - We present a spectroscopic catalog of 70,841 visually inspected M dwarfs from the seventh data release of the Sloan Digital Sky Survey. For each spectrum, we provide measurements of the spectral type, a number of molecular band heads, and the Hα, Hβ, Hγ, Hδ, and Ca II K emission lines. In addition, we calculate the metallicity-sensitive parameter ζ and identify a relationship between ζ and the g - r and r - z colors of M dwarfs. We assess the precision of our spectral types (which were assigned by individual examination), review the bulk attributes of the sample, and examine the magnetic activity properties of M dwarfs, in particular those traced by the higher order Balmer transitions. Our catalog is cross-matched to Two Micron All Sky Survey infrared data, and contains photometric distances for each star. Finally, we identify eight new late-type M dwarfs that are possibly within 25pc of the Sun. Future studies will use these data to thoroughly examine magnetic activity and kinematics in late-type M dwarfs and examine the chemical and dynamical history of the local Milky Way.

KW - Galaxy: kinematics and dynamics

KW - brown dwarfs

KW - stars: abundances

KW - stars: activity

KW - stars: late-type

KW - stars: low-mass

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JO - Astronomical Journal

JF - Astronomical Journal

IS - 3

M1 - 97

ER -

The Sloan Digital Sky Survey data release 7 spectroscopic M DWARF catalog. I. data

Abstract

Keywords

ASJC Scopus subject areas

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