2014ApJ...788...41D

Query : 2014ApJ...788...41D

2014ApJ...788...41D - Astrophys. J., 788, 41 (2014/June-2)

OGLE-LMC-ECL-11893: the discovery of a long-period eclipsing binary with a circumstellar disk.

DONG S., KATZ B., PRIETO J.L., UDALSKI A., KOZLOWSKI S., STREET R.A., BRAMICH D.M., TSAPRAS Y., HUNDERTMARK M., SNODGRASS C., HORNE K., DOMINIK M. and FIGUERA JAIMES R.

Abstract (from CDS):

We report the serendipitous discovery of a disk-eclipse system OGLE-LMC-ECL-11893. The eclipse occurs with a period of 468 days, a duration of about 15 days, and a deep (up to ΔmI~ 1.5), peculiar, and asymmetric profile. A possible origin of such an eclipse profile involves a circumstellar disk. The presence of the disk is confirmed by the H-α line profile from the follow-up spectroscopic observations, and the star is identified as Be/Ae type. Unlike the previously known disk-eclipse candidates, the eclipses of OGLE-LMC-ECL-11893 retain the same shape throughout the span of ∼17 yr (13 orbital periods), indicating no measurable orbital precession of the disk.

Abstract Copyright: ∼

Journal keyword(s): binaries: eclipsing - circumstellar matter - stars: individual: OGLE LMC-ECL-11893 - stars: variables: T Tauri, Herbig Ae/Be

VizieR on-line data: <Available at CDS (J/ApJ/788/41): table1.dat>

Simbad objects: 8

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Number of rows : 8
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 * eps Aur SB* 05 01 58.1343686760 +43 49 23.917115316 3.86 3.53 2.99 2.47 2.02 A9Ia 600 0
2 OGLE LMC-ECL-11893 EB* 05 17 21.1768150531 -69 00 55.701460035 17.854 17.954 17.753   17.556 B9III 20 0
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
4 OGLE LMC-ECL-17782 EB* 05 30 36.8835369432 -69 06 23.933881440     15.737 15.79 15.805 ~ 15 0
5 V* V582 Mon TT* 06 41 10.3403165544 +09 28 33.487425336   17.404   17.21 16.45 K5e 206 0
6 VSSG 26 Or* 16 27 18.48720 -24 29 05.9136           ~ 97 0
7 YLW 16A Y*O 16 27 28.02744 -24 39 33.5052           K8 205 0
8 BD+55 2693 Be* 22 09 22.7543431920 +55 45 24.256674360 10.88 11.1 10.9     B5:nev 88 0

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