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J/PASP/122/144      Multiband photometry of V725 Sgr  (Battinelli+, 2010)
Multiband photometry of V725 Sagittarii.
    Battinelli P., Demers S.
   <Publ. Astron. Soc. Pac., 122, 144-148 (2010)>
   =2010PASP..122..144B
ADC_Keywords: Stars, variable ; Photometry, UBVRI ; Photometry, infrared


Abstract:
    V725 Sgr is a rather peculiar variable that showed a period increase
    during part of the twentieth century. Its behavior is attributed to
    rapid stellar evolution. V725 Sgr was monitored in V, R, I and J, H, K
    with the REM telescope, on La Silla, from 2008 August to 2009
    November. Its light variation does not show a well-defined cyclic
    behavior. Its current V is similar to what it was 30-40yrs ago. Its
    published motion suggests that V725 Sgr is located at a few
    kiloparsecs from the Sun. This implies that V725 Sgr is a giant rather
    than a supergiant star. From its mean colors we conclude that V725 Sgr
    is now an irregular variable of spectral type ∼K4 III.

Description:
    The observations, presented in this article, were secured with the REM
    (Rapid Eye Mount), a robotic 60cm telescope located on La Silla. Our
    goal was to obtain observations every 10-15days, weather
    permitting, during the long observing season of V725 Sgr. The ROSS
    instrument provides optical images in the Kron-Cousins bands.
Objects:
    ----------------------------------------------------
       RA   (2000)   DE      Designation(s)
    ----------------------------------------------------
    18 11 59.4   -36 06 40   V725 Sgr = V* V725 Sgr
    ----------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table2.dat        50       32   Photometry of V725 Sgr


Byte-by-byte Description of file: table2.dat

   Bytes Format Units   Label     Explanations

   1- 10  A10   ---     Date      Observation date
  12- 18  F7.2  d       MJD       Modified Julian date
  20- 24  F5.2  mag     Vmag      ? Johnson V magnitude
  26- 30  F5.2  mag     Icmag     ? Cousins I magnitude
  32- 35  F4.2  mag     Rc-Ic     ? Cousins R-I colour index
  37- 40  F4.2  mag     Kmag      ? Johnson K magnitude
  42- 45  F4.2  mag     J-K       ? Johnson J-K colour index
  47- 50  F4.2  mag     H-K       ? Johnson H-K colour index


History:
    From electronic version of the journal
(End)                                      Patricia Vannier [CDS]    01-Apr-2010