2020MNRAS.493.4045J

Query : 2020MNRAS.493.4045J

2020MNRAS.493.4045J - Mon. Not. R. Astron. Soc., 493, 4045-4057 (2020/April-2)

The ASAS-SN catalogue of variable stars - VII. Contact binaries are different above and below the Kraft break.

JAYASINGHE T., STANEK K.Z., KOCHANEK C.S., SHAPPEE B.J., PINSONNEAULT M.H., HOLOIEN T.W.-S., THOMPSON T.A., PRIETO J.L., PAWLAK M., PEJCHA O., POJMANSKI G., OTERO S., HURST N. and WILL D.

Abstract (from CDS):

We characterize ∼71 200 W Ursae Majoris (UMa) type (EW) contact binaries, including ∼12 600 new discoveries, using All-Sky Automated Survey for SuperNovae (ASAN-SN)V-band all-sky light curves along with archival data from Gaia, 2MASS, AllWISE, LAMOST, GALAH, RAVE, and APOGEE. There is a clean break in the EW period-luminosity relation at log(P/ d)≃-0.30, separating the longer period, early-type EW binaries from the shorter period, late-type systems. The two populations are even more cleanly separated in the space of period and effective temperature, by T_ eff_=6710 K-1760 K log(P/0.5 d). Early-type and late-type EW binaries follow opposite trends in Teff with orbital period. For longer periods, early-type EW binaries are cooler, while late-type systems are hotter. We derive period-luminosity relationships in the WJK, V, Gaia DR2 G, J, H, Ks, and W1 bands for the late-type and early-type EW binaries separated by both period and effective temperature, and by period alone. The dichotomy of contact binaries is almost certainly related to the Kraft break and the related changes in envelope structure, winds, and angular momentum loss.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): catalogues - surveys - binaries: eclipsing

VizieR on-line data: <CDS Catalogue: II/366>

Status at CDS : All or part of tables of objects could be ingested in SIMBAD; there are some issues with cross-identifications or classifications.

CDS comments: The resolution of this survey is 15''. As a consequence the astrometry is poor, usually within 5'', but it can be more than 1 pixel. Thus the identifications in astrometric catalogues and the ingestion in Simbad are quite challenging.

Simbad objects: 21

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Number of rows : 21
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 ASASSN-V J021906.93+623743.8 EB* 02 19 06.9529423421 +62 37 43.623174624   13.399 12.570 12.269   ~ 3 0
2 V* V1343 Cas EB* 02 43 50.8559023416 +58 26 00.391183620   15.20 14.21 13.85   ~ 7 1
3 ASASSN-V J043316.56+114456.0 EB* 04 33 16.5708934886 +11 44 55.720353652   14.645 13.857 13.942   ~ 3 0
4 ASASSN-V J051436.79+694722.2 EB* 05 14 36.7924224284 +69 47 22.183756571   14.972 14.408 14.270   ~ 5 0
5 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
6 ASASSN-V J055501.52+684422.3 EB* 05 55 01.5180415443 +68 44 22.281664938   14.018 13.354 13.486   ~ 5 0
7 [YWW2015] SA19 7576 EB* 06 59 14.1468465178 +46 06 39.921046428   14.844 14.382 14.347   ~ 6 0
8 ASASSN-V J072502.17-305923.2 EB* 07 25 02.1702448169 -30 59 23.156907495   14.903 14.368 14.317   ~ 4 0
9 ASASSN-V J075657.92-454807.6 EB* 07 56 57.9226662567 -45 48 07.671586447   14.987 14.137 13.687   ~ 2 0
10 ASASSN-V J082543.24-224143.3 EB* 08 25 43.2436456948 -22 41 43.347096888   14.909 14.385 14.344   ~ 3 0
11 ASASSN-V J082756.15-250845.6 EB* 08 27 56.1466142377 -25 08 45.632636866   15.018 14.475 14.290   ~ 3 0
12 ASASSN-V J085805.83-574038.6 EB* 08 58 05.8253116047 -57 40 38.720747185   13.658 13.015 12.860   ~ 2 0
13 ASASSN-V J110432.00-554708.3 EB* 11 04 31.9970905065 -55 47 08.290044719   14.580 13.921 13.804   ~ 3 0
14 ASASSN-V J152457.22-670737.2 EB* 15 24 57.2096006864 -67 07 37.281486553   14.186 13.489 13.835   ~ 2 0
15 ASASSN-V J153014.00-511627.5 EB* 15 30 13.9961215439 -51 16 27.481938048   13.890 13.346 13.159   ~ 3 0
16 ASASSN-V J161432.56-602652.2 EB* 16 14 32.5671011513 -60 26 52.185565584   14.704 14.050 13.925   ~ 3 0
17 ASASSN-V J185000.10+142257.7 EB* 18 50 00.0912523128 +14 22 57.652340512   14.034 13.310 13.013   ~ 6 0
18 ASASSN-V J185546.59+133839.4 EB* 18 55 46.5898608026 +13 38 39.364574569   14.584 13.897 13.712   ~ 4 0
19 ASASSN-V J205040.05+464538.2 EB* 20 50 40.0461884745 +46 45 38.239787750       13.570   ~ 6 0
20 ASASSN-V J213257.30+365146.8 EB* 21 32 57.3026994801 +36 51 46.832177079   14.491 13.923 13.841   ~ 5 0
21 ATO J331.6863+32.6418 EB* 22 06 44.7298787976 +32 38 30.832298952   12.75 12.54     ~ 3 0

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