Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009ap%26ss.323..329p&link_type=abstract
Astrophysics and Space Science, Vol. 323, p. 329-335
Astronomy and Astrophysics
Astrophysics
2
Pre-Main Sequence Stars, T Tauri Stars, V 1735 Cyg
Scientific paper
Results from optical photometric observations of the PMS star V 1735 Cyg are reported. The star is located in the IC 5146 dark cloud complex—a region of active star formation. On the basis of observed outburst and spectral properties, V 1735 Cyg was classified as a FUor object. We present data from BVRI CCD photometric observations of the star, collected from March 2003 to January 2009. Plates from the Rozhen Schmidt telescope archive were scanned for a brightness estimation of the star. A sequence of sixteen comparison stars in the field of V 1735 Cyg was calibrated in BVRI bands. The data from photographic observations made from 1986 to 1992 show a strong light variability (ΔV=1{ṡ/m}2). In contrast, the recent photometric data obtained from 2003 to 2009 show only small amplitude variations (ΔI=0{ṡ/m}3). The analysis of existing photometric data shows a very slow decrease in star brightness—1{ṡ/m}8 (R) for a 44 year period. The possibilities for future photometric investigations of V 1735 Cyg using the photographical plate archives is discussed briefly.
Peneva S. P.
Semkov E. H.
Stavrev Ya. K.
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