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J/ApJ/671/333       Aperture photometry in NGC 5194          (Kennicutt+, 2007)

Star formation in NGC 5194 (M51a). II. The spatially resolved star formation law. Kennicutt R.C.Jr, Calzetti D., Walter F., Helou G., Hollenbach D.J., Armus L., Bendo G., Dale D.A., Draine B.T., Engelbracht C.W., Gordon K.D., Prescott M.K.M., Regan M.W., Thornley M.D., Bot C., Brinks E., De Blok E., De Mello D., Meyer M., Moustakas J., Murphy E.J., Sheth K., Smith J.D.T. <Astrophys. J., 671, 333-348 (2007)> =2007ApJ...671..333K
ADC_Keywords: Galaxies, photometry Keywords: galaxies: evolution - galaxies: individual (M51a, NGC 5194) - galaxies: ISM - H II regions - infrared: galaxies - stars: formation Abstract: We have studied the relationship between the star formation rate (SFR), surface density, and gas surface density in the spiral galaxy M51a (NGC 5194), using multiwavelength data obtained as part of the Spitzer Infrared Nearby Galaxies Survey (SINGS). We introduce a new SFR index based on a linear combination of Halpha emission-line and 24um continuum luminosities, which provides reliable extinction-corrected ionizing fluxes and SFR densities over a wide range of dust attenuations. Description: Spitzer MIPS observations of M51a at 24um were obtained on 22 and 23 June 2004, as part of the SINGS Legacy Program. Narrowband images centered at Halpha and continuum R-band images were obtained on 2001 March 28, with the Cassegrain Focus CCD Imager on the 2.1m telescope at Kitt Peak National Observatory, as part of the SINGS ancillary data program. Archival HST/NICMOS images of the central 144", corresponding to the inner ∼6kpc of the galaxy, are available in the Paα emission line (1.8756 um, F187N narrow-band filter) and the adjacent continuum (F190N narrow-band filter). HI data for M51a have been obtained through The H I Nearby Galaxy Survey (THINGS), a survey dedicated to obtain high-resolution VLA H I imaging for ∼35 nearby galaxies. M51 was observed in the VLA D (2004 July 9), C (2004 April 26), and B array (2005 March 5). The CO J=1-0 map of M51a was obtained as part of the BIMA Survey Of Nearby Galaxies (BIMA SONG). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 93 315 Aperture Photometry and SFR in NGC 5194
See also: J/ApJ/633/871 : Positions and photometry of HII knots in M51 (Calzetti+, 2005) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 4 I4 --- ID Aperture identification 7- 8 I2 h RAh Hour of Right Ascension (J2000) (1) 10- 11 I2 min RAm Minute of Right Ascension (J2000) (1) 13- 16 F4.1 s RAs Second of Right Ascension (J2000) (1) 19- 20 I2 deg DEd Degree of Declination (J2000) (1) 22- 23 I2 arcmin DEm Arcminute of Declination (J2000) (1) 25- 26 I2 arcsec DEs Arcsecond of Declination (J2000) (1) 29- 30 I2 arcsec Ap Diameter of aperture 33- 37 F5.2 [10-7W] LHa Groundbased Hα luminosity (2) 40- 44 F5.2 [10-7W] LPa ? HST/NICMOS Paα luminosity (2) 47- 51 F5.2 [10-7W] L24um Spitzer/IRAC 24µm luminosity (2) 54- 58 F5.2 [Msun/yr/kpc2] Sigma(SFR) log of SFR surface density (3) 61- 65 F5.3 [Msun/yr/kpc2] e_Sigma(SFR) Uncertainty in Sigma(SFR) 68- 72 F5.2 [cm-2] N(HI) log of HI column density 75- 79 F5.2 [cm-2] N(H2) log of H2 column density 82 A1 --- l_Sigma(H) Upper limit flag on Sigma(H) 83- 86 F4.2 [Msun/pc2] Sigma(H) log of total hydrogen surface density 89- 93 F5.3 [Msun/pc2] e_Sigma(H) ? Uncertainty on Sigma(H)
Note (1): Of aperture center. Note (2): In units of erg/s. Stellar continuum luminosities are given as λL(λ). Luminosities have been corrected for Galactic foreground extinction E(B-V)MW=0.037mag, but otherwise have not been corrected for extinction. Note (3): SFRs for objects with Paα photometry were corrected for extinction using the Paα/H{alpha) ratio. Otherwise SFRs were corrected for extinction using the 24micron/Hα ratio as described in the text.
History: From electronic version of the journal References: Calzetti et al., Paper I, 2005ApJ...633..871C, Cat. J/ApJ/633/871
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 28-Feb-2010
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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