2014AJ....147..105H


Query : 2014AJ....147..105H

2014AJ....147..105H - Astron. J., 147, 105 (2014/May-0)

The 1991-2012 light curve of the old nova HR Lyrae.

HONEYCUTT R.K., SHEARS J., KAFKA S., ROBERTSON J.W. and HENDEN A.A.

Abstract (from CDS):

The 22 yr light curve of HR Lyr, acquired with a typical cadence of 2-6 days, is examined for periodic and quasi-periodic variations. No persistent periodicities are revealed. Rather, the light curve variations often take the form of nearly linear rises and falls having typical e-folding times of about 100 days. Occasional ∼0.6 mag outbursts are also seen, with properties similar to those of small outbursts found in some nova-like cataclysmic variables. When the photometry is formed into yearly averages, a decline of 0.012±0.005 mag/yr is apparent, consistent with the fading of irradiation-induced {dot}M following the nova. The equivalent width of Hα is tabulated at three epochs over the interval 1986-2008 in order to compare with a recent result for DK Lac in which Hα was found to be fading 50 yr after the nova. However, our results for such a fading in HR Lyr are inconclusive.

Abstract Copyright: ∼

Journal keyword(s): novae, cataclysmic variables - stars: individual: HR Lyr

VizieR on-line data: <Available at CDS (J/AJ/147/105): table1.dat table2.dat>

Simbad objects: 3

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Number of rows : 3
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 V* DQ Her CV* 18 07 30.2510391864 +45 51 32.564791872   14.605 14.443 14.800   M3+Ve 1048 1
2 V* HR Lyr No* 18 53 25.0563891480 +29 13 37.666012692     15.4     ~ 74 0
3 V* DK Lac No* 22 49 46.9311405048 +53 17 19.798203336           ~ 116 0

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