New possible WZ Sge variable ASASSN-14jv

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New possible WZ Sge variable ASASSN-14jv

文章 PTS » 週二 11 11月, 2014 13:02

AAVSO Special Notice #390
November 10, 2014

New possible WZ Sge variable ASASSN-14jv

Astronomer's Telegram (ATel) #6676 (B.J. Shappee et al. 2014) notes
the discovery of ASASSN-14jv, a bright optical transient found at
V=11.3 on 2014 November 9.19 (JD 2456970.69). This object is
suspected to be a cataclysmic variable of the WZ Sge subtype.
Shappee et al. note that the source is less than one arcsecond
away from a g=19.1 magnitude source in the Kepler Input Catalog,
suggesting a large amplitude typical of UGWZ stars.

The object is quite blue, according to observations by A. Pal et
al. (ATel #6680, 2014) that show the transient on 2014 Nov. 9.78
UT at B=10.7 +/-0.2, V=11.3 +/- 0.2, and R=11.9 +/- 0.2, based on
USNO B1.0 magnitudes.

Observations by Enrique de Miguel (CBA Huelva, Spain) reported on
9 November 2014 [vsnet-alert 17950] show the presence of probable
superhumps. That, combined with the large amplitude and color,
indicates that the object is likely a WZ Sge star.

Both photometric (CCD and visual) and spectroscopic observations
are encouraged, spectroscopy especially to confirm the nature of
the object.

ASASSN-14jv was discovered at the following (J2000) coordinates:

RA: 18 53 28.81 Dec: +42 03 43.3

Time series observations are encouraged for this star, preferably
made using photometric filters, particularly Johnson V.

Observations reported to the AAVSO include:
2014 Nov. 09.76389 UT, 11.1 (KLO, L. Kocsmaros, Zrenjanin, Serbia);
09.71875, 11.1 (WKL, K. Wenzel, Grossostheim, Germany);

Charts for ASASSN-14jv may be created using the AAVSO Variable Star
Plotter (VSP, A sequence is being created and
will be available via VSP once it has been uploaded.

Please report observations to the AAVSO International Database
using the name ASASSN-14jv. Be sure to indicate what comparison
stars you used.

This AAVSO Special Notice was compiled by Matthew R. Templeton and
Elizabeth O. Waagen.


Information on submitting observations to the AAVSO may be found at:


A Special Notice archive is available at the following URL:

Subscribing and Unsubscribing may be done at the following URL: ... ialnotices

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註冊時間: 週日 17 12月, 2017 10:55

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