Open Dataset
Data Structure ?
20.07M
Data Structure ?
*The above analysis is the result extracted and analyzed by the system, and the specific actual data shall prevail.
README.md
文脈
ガイア(Gaia)は、数十億の恒星の視差と等級を測定することを目的とした欧州宇宙機関(ESA)のプロジェクトです。ケプラー(Kepler)は、特定の天域(すなわちケプラーフィールド)における太陽系外惑星を発見するために打ち上げられた米国航空宇宙局(NASA)のミッションでした。
内容
データセット内のCSVファイルは主に[ガイアアーカイブ](https://gea.esac.esa.int/archive/)のADQLクエリから取得されています。[gaia - kepler.fun](https://gaia - kepler.fun/)が提供する1角秒のクロスマッチに基づいて**kepid**フィールドが追加されました。**source_id**または**kepid**が複数の行に登場するクロスマッチの行はすべて削除されました。
**gaia - dr2 - kepler - field - plain.csv**を生成するために使用されたクエリ:
SELECT G.source_id,
G.parallax,G.parallax_error,
G.phot_g_mean_mag,G.phot_rp_mean_mag,G.phot_bp_mean_mag,
G.phot_g_mean_flux_error,
G.ra,G.dec,G.ra_error,G.dec_error,
G.l,G.b,
G.pmra,G.pmdec
FROM gaiadr2.gaia_source G
WHERE G.parallax >= 1.0 AND G.parallax_error <= 0.05
AND G.ra >= 279 AND G.ra <= 302
AND G.dec >= 36 AND G.dec <= 53
AND G.phot_g_mean_mag <= 17.0
AND G.parallax_error IS NOT NULL
AND G.phot_rp_mean_mag IS NOT NULL
AND G.phot_bp_mean_mag IS NOT NULL
AND G.phot_g_mean_flux_error IS NOT NULL
**gaia - dr2 - kepler - field - 3 - extra - dbs.csv**を生成するために使用されたクエリ:
SELECT G.source_id,TY.id AS tycho2_id,
G.parallax,G.parallax_error,
G.phot_g_mean_mag,G.phot_rp_mean_mag,G.phot_bp_mean_mag,
G.phot_g_mean_flux_error,
G.ra,G.dec,G.ra_error,G.dec_error,
G.l,G.b,
G.pmra,G.pmdec,
AWBN.angular_distance AS allwise_ang_dist,
TMBN.angular_distance AS tmass_ang_dist,
TYBN.angular_distance AS tycho2_ang_dist,
AW.w2mpro AS allwise_w2, AW.w3mpro AS allwise_w3, AW.w4mpro AS allwise_w4,
TM.j_m AS tmass_j_m,
TM.h_m AS tmass_h_m,
TM.ks_m AS tmass_ks_m,
TY.bt_mag AS tycho2_bt_mag,
TY.vt_mag AS tycho2_vt_mag
FROM gaiadr2.gaia_source G
INNER JOIN gaiadr2.allwise_best_neighbour AWBN ON AWBN.source_id=G.source_id
INNER JOIN gaiadr2.tmass_best_neighbour TMBN ON TMBN.source_id=G.source_id
INNER JOIN gaiadr2.tycho2_best_neighbour TYBN ON TYBN.source_id=G.source_id
INNER JOIN gaiadr1.allwise_original_valid AW ON AW.designation=AWBN.original_ext_source_id
INNER JOIN gaiadr1.tmass_original_valid TM ON TM.designation=TMBN.original_ext_source_id
INNER JOIN public.tycho2 TY ON TY.id=TYBN.original_ext_source_id
WHERE G.parallax >= 1.7 AND G.parallax_error <= 0.1
AND G.ra >= 279 AND G.ra <= 302
AND G.dec >= 36 AND G.dec <= 53
AND G.phot_g_mean_mag <= 17.0
AND G.parallax_error IS NOT NULL
AND G.phot_rp_mean_mag IS NOT NULL
AND G.phot_bp_mean_mag IS NOT NULL
AND G.phot_g_mean_flux_error IS NOT NULL
AND AW.w2mpro IS NOT NULL
AND AW.w3mpro IS NOT NULL
AND AW.w4mpro IS NOT NULL
AND TM.j_m IS NOT NULL
AND TM.h_m IS NOT NULL
AND TM.ks_m IS NOT NULL
AND TY.bt_mag IS NOT NULL
AND TY.vt_mag IS NOT NULL
AND AWBN.angular_distance <= 0.15
AND TMBN.angular_distance <= 0.15
AND TYBN.angular_distance <= 0.25
AND AWBN.best_neighbour_multiplicity=1
AND TMBN.best_neighbour_multiplicity=1
AND TYBN.number_of_neighbours=1
謝辞
提供されたデータは主に欧州宇宙機関(ESA)のガイアミッションから得られ、ガイアデータ処理・分析コンソーシアム(DPAC)によって処理されています。DPACへの資金提供は各国の機関、特にガイア多国間協定に参加している機関から行われています。
この研究では、メガン・ベデルが作成したgaia - kepler.funクロスマッチデータベースを利用しています。
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