J/A+AS/134/317 BR photometry of UGC 685 (Hopp, 1999)
Distance, structure and bright stellar content of the dwarf irregular
galaxy UGC 685.
Hopp U.
<Astron. Astrophys. Suppl. Ser. 134, 317 (1999)>
=1999A&AS..134..317H 1999A&AS..134..317H
ADC_Keywords: Galaxies, photometry ; Photometry, CCD
Keywords: galaxies - dwarfs; galaxies - structure; galaxies - distances
Abstract:
B and R CCD images and J NICMOS3 frames taken with the Calar Alto 3.5m
telescope of the dwarf irregular galaxy UGC 685 are presented. The
brightest part of the stellar population is resolved in B and R, very
few also in J. The stellar color-magnitude diagram is discussed. An
estimate of the distance to UGC 685 of 5. 5Mpc is derived based on the
brightest blue supergiant stars. Most of the resolved bright stars
show colors in the range -0.1≤B-R≤+0.7.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table3.dat 48 171 Stars found in B and R on the UGC 685 frames
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- [H99] Sequential number
5- 9 F5.1 arcsec Xpos X position (1)
12- 16 F5.1 arcsec Ypos Y position (1)
19- 23 F5.2 mag Bmag B magnitude
26- 29 F4.2 mag e_Bmag rms uncertainty on Bmag
32- 36 F5.2 mag Rmag R magnitude
39- 42 F4.2 mag e_Rmag rms uncertainty on Rmag
44- 48 F5.2 mag B-R B-R colour index
--------------------------------------------------------------------------------
Note (1): +x increases towards East and +y increases towards South
--------------------------------------------------------------------------------
History: Prepared via OCR at CDS.
(End) James Marcout, Patricia Bauer [CDS] 27-Aug-1999