The ASAS-SN catalogue of variable stars - II. Uniform classification of 412 000 known variables

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10405633" target="_blank" >RIV/00216208:11320/19:10405633 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=UpEvXY3gWK" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=UpEvXY3gWK</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/stz844" target="_blank" >10.1093/mnras/stz844</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The ASAS-SN catalogue of variable stars - II. Uniform classification of 412 000 known variables

Popis výsledku v původním jazyce

The variable stars in the VSX catalogue are derived from a multitude of inhomogeneous data sources and classification tools. This inhomogeneity complicates our understanding of variable star types, statistics, and properties, and it directly affects attempts to build training sets for current (and next) generation all-sky, time-domain surveys. We homogeneously analyse the All-Sky Automated Survey for SuperNovae (ASAS-SN) V-band light curves of similar to 412 000 variables from the VSX catalogue. The variables are classified using an updated random forest classifier with an F1 score of 99.4 per cent and refinement criteria for individual classifications. We have derived periods for similar to 52 000 variables in the VSX catalogue that lack a period, and have reclassified similar to 17 000 sources into new broad variability groups with high confidence. We have also reclassified similar to 94 000 known variables with miscellaneous/generic classifications. The light curves, classifications, and a range of properties of the variables are all available through the ASAS-SN Variable Stars Database (https://asas-sn.osu.edu/variables). We also include the V-band light curves for a set of similar to 4000 rare variables and transient sources, including cataclysmic variables, symbiotic binaries, and flare stars.

Název v anglickém jazyce

The ASAS-SN catalogue of variable stars - II. Uniform classification of 412 000 known variables

Popis výsledku anglicky

The variable stars in the VSX catalogue are derived from a multitude of inhomogeneous data sources and classification tools. This inhomogeneity complicates our understanding of variable star types, statistics, and properties, and it directly affects attempts to build training sets for current (and next) generation all-sky, time-domain surveys. We homogeneously analyse the All-Sky Automated Survey for SuperNovae (ASAS-SN) V-band light curves of similar to 412 000 variables from the VSX catalogue. The variables are classified using an updated random forest classifier with an F1 score of 99.4 per cent and refinement criteria for individual classifications. We have derived periods for similar to 52 000 variables in the VSX catalogue that lack a period, and have reclassified similar to 17 000 sources into new broad variability groups with high confidence. We have also reclassified similar to 94 000 known variables with miscellaneous/generic classifications. The light curves, classifications, and a range of properties of the variables are all available through the ASAS-SN Variable Stars Database (https://asas-sn.osu.edu/variables). We also include the V-band light curves for a set of similar to 4000 rare variables and transient sources, including cataclysmic variables, symbiotic binaries, and flare stars.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

—

Svazek periodika

486

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

37

Strana od-do

1907-1943

Kód UT WoS článku

000474899400035

EID výsledku v databázi Scopus

2-s2.0-85067934792