J/ApJ/635/280 Star clusters in the Antennae galaxies (Brandl+, 2005)
Deep near-infrared imaging and photometry of the Antennae galaxies with WIRC.
Brandl B.R., Clark D.M., Eikenberry S.S., Wilson J.C., Henderson C.P.,
Barry D.J., Houck J.R., Carson J.C., Hayward T.L.
<Astrophys. J., 635, 280-289 (2005)>
=2005ApJ...635..280B 2005ApJ...635..280B
ADC_Keywords: Galaxies, IR ; Photometry, infrared ; Associations, stellar
Keywords: galaxies: individual (NGC 4038, NGC 4039) - galaxies: interactions
Abstract:
We present deep near-infrared images of the Antennae galaxies, taken
with the Palomar Wide-Field Infrared Camera (WIRC). The images cover a
4.33'x4'33' (24.7x24.7kpc) area around the galaxy interaction zone. We
derive J- and Ks-band photometric fluxes for 172 infrared star
clusters and discuss details of the two galactic nuclei and the
overlap region.
Description:
We observed NGC 4038/39 with the new WIRC (Wide Field Infrared
Camera), mounted to the prime focus of the 200" Hale Telescope on
Palomar Mountain. We took the observations on 2002 March 22 under good
atmospheric conditions but at high air mass (1.9-2.2).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 57 57 Sources within the WIRC images that are likely
not star clusters that belong to the Antennae
table2.dat 57 60 The reddest clusters (J-Ks>1) within the WIRC
image of the Antennae
table3.dat 87 26 The 26 Antennae clusters that have been detected
by WIRC, HST, and the VLA
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See also:
J/AJ/124/1418 : Radio-optical identification of star clusters (Whitmore+ 2002)
J/AJ/109/960 : Young star clusters in The Antennae (Whitmore+ 1995)
J/ApJ/561/727 : BVI photometry in the Antennae galaxies (Zhang+, 2001)
Byte-by-byte Description of file: table1.dat table2.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- [BCE2005] [1/234] WIRC identification
(<[BCE2005] NNN> in Simbad)
4 A1 --- Cl [ab] Class: a = known star,
b = background quasar
6- 7 I2 h RAh Hour of Right Ascension (J2000.0)
9- 10 I2 min RAm Minute of Right Ascension (J2000.0)
12- 16 F5.2 s RAs Second of Right Ascension (J2000.0)
18 A1 --- DE- Sign of the Declination (J2000.0)
19- 20 I2 deg DEd Degree of Declination (J2000.0)
22- 23 I2 arcmin DEm Arcminute of Declination (J2000.0)
25- 29 F5.2 arcsec DEs Arcsecond of Declination (J2000.0)
31- 35 F5.2 mag Jmag 2MASS J magnitude
37- 40 F4.2 mag e_Jmag Error in Jmag
42- 46 F5.2 mag Ksmag 2MASS Ks magnitude
48- 51 F4.2 mag e_Ksmag Error in Ksmag
53- 57 F5.2 mag J-Ks J-Ks color index
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- [WZ2002] [3/37] HST identification number
(<[WZ2002] NN> in Simbad)
4- 6 I3 --- [BCE2005] [34/198] WIRC identification number
(<[BCE2005] NNN> in Simbad)
8- 9 I2 h RAh Hour of Right Ascension (J2000.0)
11- 12 I2 min RAm Minute of Right Ascension (J2000.0)
14- 18 F5.2 s RAs Second of Right Ascension (J2000.0)
20 A1 --- DE- Sign of the Declination (J2000.0)
21- 22 I2 deg DEd Degree of Declination (J2000.0)
24- 25 I2 arcmin DEm Arcminute of Declination (J2000.0)
27- 31 F5.2 arcsec DEs Arcsecond of Declination (J2000.0)
33- 36 F4.2 arcsec Off [0/1.2] Radial difference between HST
and WIRC positions
38- 41 F4.2 Myr Age Cluster age, according to Whitmore & Zhang
2002 (J/AJ/124/1418)
43- 46 I4 mJy S6cm Flux density at 6cm from Neff & Ulvestad
(2000AJ....120..670N 2000AJ....120..670N)
48- 53 F6.2 mag VMAG Absolute V-band magnitude
55- 59 F5.2 mag Vmag V magnitude
61- 65 F5.2 mag Imag I magnitude
67- 71 F5.2 mag Jmag 2MASS J magnitude
73- 76 F4.2 mag e_Jmag Error in Jmag
78- 82 F5.2 mag Ksmag 2MASS Ks magnitude
84- 87 F4.2 mag e_Ksmag Error in Ksmag
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History:
From electronic version of the journal
(End) Marianne Brouty [CDS] 24-Aug-2006