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J/ApJ/619/270   Young super star clusters in the starburst of M82  (Melo+, 2005)

Young super star clusters in the starburst of M82: the catalog. Melo V.P., Munoz-Tunon C., Maiz-Apellaniz J., Tenorio-Tagle G. <Astrophys. J., 619, 270-290 (2005)> =2005ApJ...619..270M
ADC_Keywords: Active gal. nuclei ; Associations, stellar Keywords: catalogs - galaxies: individual (M82) - galaxies: starburst - galaxies: star clusters Abstract: Recent results from the Hubble Space Telescope (HST) have resolved starbursts as collections of compact young stellar clusters. Here we present a photometric catalog of the young stellar clusters in the nuclear starburst of M82, observed with the HST WFPC2 in Hα (F656N) and in four optical broadband filters. We identify 197 young super stellar clusters (SSCs). The compactness and high density of the sources led us to develop specific techniques to measure their sizes. Strong extinction lanes divide the starburst into five different zones. In the catalog we include relative coordinates, radii, fluxes, luminosities, masses, equivalent widths, extinctions, and other parameters. Extinction values have been derived from the broadband images. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 25 699 Hα bright knots for each macrostructure table4.dat 25 304 Continuum bright knots for each macrostructure table5-9.dat 130 197 Candidate young super star clusters (SSC) (tables 5 to 9 of the paper - including corrections from erratum for table 8) table12.dat 54 193 Broad-band magnitudes of super star clusters (including corrections from erratum J/ApJ/632/684)
Byte-by-byte Description of file: table3.dat table4.dat
Bytes Format Units Label Explanations
1- 5 A5 -- ID Identification number (1) 7- 12 F6.3 s oRA ? Right Ascension offset (G1) 14- 19 F6.2 arcsec oDE ? Declination offset (G1) 21- 25 F5.2 pc rad ? Radius
Note (1): <[MMM2005] HA WWNNN> and <[MMM2005] Knot WWNNN> in Simbad, for Hα and continuum bright knots respectively.
Byte-by-byte Description of file: table5-9.dat
Bytes Format Units Label Explanations
1- 4 A4 --- SSC Name of Super Stellar Cluster (SSC) <[MMM2005] SSC WWNN> in Simbad) 6- 8 A3 --- f_SSC Flag on SSC (1) 10- 15 F6.3 s oRA Right Ascension offset (G1) 17- 22 F6.2 arcsec oDE Declination offset (G1) 24- 27 F4.2 pc rad Radius of Super Stellar Cluster 29- 34 F6.2 aW/m2 FHa Flux in Halpha (2) 36- 40 F5.2 aW/m2 e_FHa Uncertainty in FHa (2) 42- 46 F5.2 aW/m2 Fdif Diffuse emission flux in Halpha (2) 48- 52 F5.2 aW/m2 e_Fdif Uncertainty in Fdif (2) 54- 56 I3 % PFHa Diffuse emission rate in total Hα flux 58- 63 F6.3 aW/m2 FHa2 Halpha flux without diffuse emission (2) 65- 69 F5.3 aW/m2 e_FHa2 Uncertainty in FHa2 (2) 71- 74 F4.2 mag Av Internal extinction coefficient 76- 79 F4.2 mag e_Av Uncertainty in Av 81- 86 F6.3 10+31W LHa Luminosity in Halpha (3) 88- 93 F6.3 10+31W e_LHa Uncertainty in LHa (3) 95- 99 F5.2 pc Dist Projected distance to the nearest SSC 101-107 F7.3 10+49/s phIon Number of ionizing photons (4) 109-114 F6.3 10+49/s e_phIon Uncertainty in phIon (4) 116-118 I3 0.1nm EWHa Hα equivalent width in Angstroms 120-124 F5.3 10+5solMass Mass ? Stellar mass 126-130 F5.3 10+5solMass e_Mass ? Uncertainty in stellar mass
Note (1): Flag defined as follows: * = SSC with emission outside the roundish structure; x = SSC with which we have problems with age determination; S = mass values not given because we do not have broad-band magnitudes; d = separation between neighboring knots is smaller than the sum of their radii. Note (2): Fluxes in 10-15erg/s/cm2 = 10-18W/m2 Note (3): Luminosities in 1038erg/s. Note (4): Number of ionizing photons in 1049/s, as given by Osterbrock 1989: Q(H0) = 7.31x1011 L(Hα).
Byte-by-byte Description of file: table12.dat
Bytes Format Units Label Explanations
1- 4 A4 --- SSC Name of SSC (<[MMM2005] SSC WWNN> in Simbad) 6- 11 F6.3 mag F439W HST/WFPC2 F439W filter magnitude 13- 17 F5.3 mag e_F439W Uncertainty in F439Wmag 19- 24 F6.3 mag F555W HST/WFPC2 F555W filter magnitude 26- 30 F5.3 mag e_F555W Uncertainty in F555Wmag 32- 37 F6.3 mag F814W HST/WFPC2 F814W filter magnitude 39- 43 F5.3 mag e_F814W Uncertainty in F814Wmag 45- 49 F5.2 mag F547M HST/WFPC2 F547M filter magnitude 51- 54 F4.2 mag e_F547M Uncertainty in F547Mmag
Global Notes: Note (G1): Coordinates of knots are relative to the reference SSC (09:55:53.56+69:40:51.78, J2000) and are sorted by declination.
History: * 26-Nov-2005: From electronic version of the journal * 08-Oct-2010: table8 and table12 corrected according to erratum in ApJ 632, 684 (2005)
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 03-Aug-2005
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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