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J/AJ/121/3048       Multicolor photometry in NGC 1512 and NGC 5248 (Maoz+, 2001)

An ultraviolet through infrared look at star formation and super star clusters in two circumnuclear starburst rings. Maoz D., Barth A.J., Ho L.C., Sternberg A., Filippenko A.V. <Astron. J. 121, 3048 (2001)> =2001AJ....121.3048M
ADC_Keywords: Galaxies, photometry ; Photometry, ultraviolet ; Photometry, infrared Mission_Name: HST Keywords: galaxies: individual (NGC 1512, NGC 5248) - galaxies: starburst - galaxies: star clusters Abstract: We present broadband (U, V, I, and H) and narrowband (Hα+[N II] and Paα) images of the circumnuclear starburst rings in two nearby spiral galaxies, NGC 1512 and NGC 5248, obtained with the WFPC2 and NICMOS cameras on HST. Combined with previously published ultraviolet (UV) HST images at 2300Å these data provide a particularly wide wavelength range with which to study the properties of the stellar populations, the gas, and the dust in the rings. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 62 32 Emission-Line Complexes table3.dat 110 475 Compact sources brightest in V - NGC 1512 table4.dat 110 507 Compact sources brightest in V - NGC 5248 table5.dat 64 248 Cluster ages, extinctions and masses - NGC 1512 table6.dat 64 308 Cluster ages, extinctions and masses - NGC 5248
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Cluster Cluster name 10- 11 I2 --- ELC Emission-Line Complexe number in the cluster ([MBH2001 NGC NNNN ELC NN in Simbad) 13- 15 I3 pix Xpos X position 17- 19 I3 pix Ypos Y position 21- 25 F5.2 arcsec DRA Offset in right ascension from the galaxy nucleus (1) 28- 32 F5.2 arcsec DDE Offset in declination from the galaxy nucleus (1) 34- 37 F4.2 arcsec Rad Angular radius of circular aperture used for flux measurements (2) 39- 43 F5.1 10-19W/m2 FHa Line flux in Halpha+[NII] (in F658N filter) (3) 45- 48 F4.1 10-19W/m2 FPaa Line flux in Paalpha (3) 50- 54 F5.1 10-19W/m2 F1.6um Line flux in 1.6mum (3) 56- 58 F3.1 --- FHa/FPaa Ratio of Hα+[NII] to Paα lines 60- 62 I3 --- FPaa/F1.6um Ratio of Paα to 1.6µm lines
Note (1): Cluster center coordinates: NGC 1512: 04:03:54.29 (J2000) -43:20:56.7 (419.6, 390.7) NGC 5248: 13:37:32.0 (J2000) +08:53:08 (422.16, 396.02) Note (2): At a distance of 10 Mpc, 0.1" corresponds to 5pc Note (3): At a distance of 10 Mpc this unit corresponds to a luminosity of 1.2x1036erg/s.
Byte-by-byte Description of file: table4.dat table3.dat
Bytes Format Units Label Explanations
1- 3 I3 --- CS Compact source number ([MBH2001 NGC NNNN CS NN in Simbad) 5- 10 F6.2 pix Xpix X pixel PC coordinate in the F547M frame 12- 17 F6.2 pix Ypix Y pixel PC coordinate in the F547M frame 19- 24 F6.2 arcsec oRA Right Ascension offset from galaxy nucleus (1) 26- 31 F6.2 arcsec oDE Declination offset from galaxy nucleus (1) 33- 37 F5.2 mag Vmag ? The V band magnitude 39- 42 F4.2 mag Del1-3 ? Magnitude difference between F547M photometry (about Stroemgren y) in 3-pixel and 1-pixel radius aperture 44 A1 --- l_F2300 Limit flag on F2300 (2) 45- 51 F7.1 10-21W/m2/nm F2300 ? The f_lambda_ flux at 2300AA (3) 53- 58 F6.1 10-21W/m2/nm e_F2300 ? The one sigma error in F2300 (4) 60 A1 --- l_F3350 Limit flag on F3350 (2) 61- 66 F6.1 10-21W/m2/nm F3350 ? The f_lambda_ flux at 3350AA (3) 68- 72 F5.1 10-21W/m2/nm e_F3350 ? The one sigma error in F3350 (U) (4) 74 A1 --- l_F5490 Limit flag on F5490 (2) 75- 80 F6.1 10-21W/m2/nm F5490 The f_lambda_ flux at 5490AA (V) (3) 82- 85 F4.1 10-21W/m2/nm e_F5490 ? The one sigma error in F5490 (4) 87 A1 --- l_F8040 Limit flag on F8040 (2) 88- 92 F5.1 10-21W/m2/nm F8040 The f_lambda_ flux at 8040AA (I) (3) 94- 97 F4.1 10-21W/m2/nm e_F8040 ? The one sigma error in F8040 (4) 99 A1 --- l_F1.6 Limit flag on F1.6 (2) 100-104 F5.1 10-21W/m2/nm F1.6 ? The f_lambda_ flux at 1.6mum (H) (3)(4) 106-109 F4.1 10-21W/m2/nm e_F1.6 ? The one sigma error in F1.6 (4)
Note (1): Galaxy nucleus of NGC 1512 (table3.dat) is at pixel coordinates 419.6, 390.7. Galaxy nucleus of NGC 5248 (table4.dat) is at pixel coordinates 422.16, 396.02 Note (2): For null detections, the flux limits actually depend on the local background and crowding, and the limits quoted are just those typical for the band. Note (3): Fluxes are in units of 10-19ergs/s/cm2Note (4): Missing entries are for sources outside the field of view of the FOC or NICMOS.
Byte-by-byte Description of file: table5.dat table6.dat
Bytes Format Units Label Explanations
1- 3 I3 --- CS Compact source number ([MBH2001] NGC NNNN CS NNN in Simbad) 5 I1 --- o_CS Number of bands source observed in (1) 7- 9 I3 Myr B-Age Best fitting model age 11- 13 F3.1 mag B-AV Best fitting model V band extinction 15- 19 F5.2 10+4solMass B-Mass Best fitting model mass 21- 25 F5.2 --- B-chi2 Reduced χ2 of best fitting model 27- 29 I3 Myr Y-Age ? Youngest acceptable model age 31- 33 F3.1 mag Y-AV ? Youngest acceptable model V band extinction 35- 39 F5.2 10+4solMass Y-Mass ? Youngest acceptable model mass 41- 44 F4.2 --- Y-chi2 ? Reduced χ2 of youngest acceptable model 46- 48 I3 Myr O-Age ? Oldest acceptable model age 50- 52 F3.1 mag O-AV ? Oldest acceptable model V band extinction 54- 58 F5.2 10+4solMass O-Mass ? Oldest acceptable model mass 60- 63 F4.2 --- O-chi2 ? Reduced χ2 of oldest acceptable model
Note (1): Objects with detections in fewer than 4 bands not fitted. Formally ``acceptable'' models have χ2 per degree of freedom <2.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 11-Sep-2001
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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