J/AJ/117/1700 HST observations of clusters in NGC 3597 (Carlson+, 1999)
Deep Hubble Space Telescope observations of blue star clusters in NGC 3597
Carlson M.N., Holtzman J.A., Grillmair C.J., Mould J.R., Griffiths R.E.,
Ballester G.E., Burrows C.J., Clarke J.T., Crisp D., Evans R.W.,
Gallagher III J.S., Hester J.J., Hoessel J.G., Scowen P.A.,
Stapelfeldt K.R., Trauger J.T., Watson A.M., Westphal J.A.
<Astron. J. 117, 1700 (1999)>
=1999AJ....117.1700C 1999AJ....117.1700C
ADC_Keywords: Clusters, globular ; Colors ; Photometry
Mission_Name: HST
Keywords: galaxies: star clusters
Abstract:
We have analyzed HST/WFPC2 images of NGC 3597 and find ≃700 compact
objects surrounding the galaxy with an average (B-R)0 ≃0.6. We
propose that the majority of these objects are young globular
clusters. They have a spread in colors that is consistent with that
expected for a population of young clusters with a common age and
spread induced by photometric errors and reddening within NGC 3597.
Description:
NGC 3597 was observed with the WFPC2 on 1997 May 16 in the F450W and
F702W filters. In the F450W filter, we took four exposures of 1300 s
each. In the F702W filter, exposure times were 1100 and 3 1300 s. The
F450W and F702W filters are comparable to broadband B and R filters.
Objects:
--------------------------------------------------
RA (2000) DE Designation(s)
--------------------------------------------------
11 14 42.3 -23 43 41 NGC 3597 = IRAS F11122-2327
--------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 47 682 Photometry for all observed clusters with B>28
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 F6.2 pix Xpix X pixel element
9- 14 F6.2 pix Ypix Y pixel element
17- 22 F6.3 mag Bmag B band magnitude
25- 29 F5.3 mag e_Bmag Uncertainty in Bmag
33- 38 F6.3 mag B-R B-R color
42- 47 F6.3 mag e_B-R Uncertainty in B-R
--------------------------------------------------------------------------------
History:
From AJ electronic edition
(End) Greg Schwarz [AAS] 06-Apr-2000