[vsnet-alert 8678] More on TT Ari fading

[Taichi Kato]

  The last major fading of TT Ari started in 1981.

See e.g.

http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1985ApJ...290..707S

  Long-term photographic photometry:

http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1984Obs...104....1H

  Low states typically appears with a time-scale of 5000 d.

  UV observations in 1982: cf. Nature 200, 152 (1982)

  Initially suggested as a nova-like variable, then a dwarf nova:

http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1981A%26A....98...27K&db_key=AST&data_type=HTML&format=&high=430d71d57023067

  (This is the source of UGZ classification in GCVS)

  The object is now considered as a VY Scl-type cataclysmic variable.

  When the 1981-1982 fading was first spectroscopically observed,
there was a rumor that the object may be an R CrB-type object based
on the presence of carbon emission lines.

  The binary nature had been already established by that time:

http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1975ApJ...195..413C&db_key=AST&data_type=HTML&format=&high=430d71d57023067

  Before the variability was recognized, the object was called as
BD+14.341:

http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1966PASP...78..279W&db_key=AST&data_type=HTML&format=&high=430d71d57025494