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J/MNRAS/465/3461    Halpha maps of 3 LIRGS             (Zaragoza-Cardiel+, 2017)

Kinematics of the ionized and molecular gas in nearby luminous infrared interacting galaxies. Zaragoza-Cardiel J., Beckman J.E., Font J., Rosado M., Camps-Farina A., Borlaff A. <Mon. Not. R. Astron. Soc. 465, 3461 (2017)> =2017MNRAS.465.3461Z (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, nearby ; H II regions ; Molecular clouds ; Velocity dispersion Keywords: galaxies: interactions - galaxies: ISM - galaxies: kinematics and dynamics - galaxies: starburst - galaxies: stars formation Abstract: We have observed three luminous infrared galaxy systems (LIRGS) which are pairs of interacting galaxies, with the Galaxy Hα Fabry-Perot system (GHαFaS) mounted on the 4.2m William Herschel Telescope at the Roque de los Muchachos Observatory, and combined the observations with the Atacama Large Millimeter Array (ALMA) observations of these systems in CO emission to compare the physical properties of the star formation regions and the molecular gas clouds, and specifically the internal kinematics of the star forming regions. We identified 88 star forming regions in the H$α$ emission data-cubes, and 27 molecular cloud complexes in the CO emission data-cubes. The surface densities of the star formation rate and the molecular gas are significantly higher in these systems than in non-interacting galaxies and the Galaxy, and are closer to the surface densities of the star formation rate and the molecular gas of extreme star forming galaxies at higher redshifts. The large values of the velocity dispersion also show the enhanced gas surface density. The HII regions are situated on the ΣSFRv envelope, and so are also in virial equilibrium. Since the virial parameter decreases with the surface densities of both the star formation rate and the molecular gas, we claim that the clouds presented here are gravitationally dominated rather than being in equilibrium with the external pressure. Description: We present Hα data cubes observations of Arp 186, Arp 236, and Arp 298 from the ionized component of the interstellar medium. We also include the properties of the identified HII regions and Giant Molecular Clouds. The molecular component is derived using observations of those systems from the ALMA archive. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file tablehii.dat 114 88 Properties of HII regions (tablea2, part 1) tablemol.dat 102 27 Properties of GMCs (tablea2, part 2) list.dat 128 12 List of fits files fits/* 0 12 Individual fits files
Byte-by-byte Description of file: tablehii.dat
Bytes Format Units Label Explanations
1- 7 A7 --- Gal Name of the galaxy 9- 10 I2 --- Num Consecutive number in catalog 12- 13 I2 h RAh Right Ascension (J2000) 15- 16 I2 min RAm Right Ascension (J2000) 18- 21 F4.1 s RAs [0/60] Right Ascension (J2000) 23 A1 --- DE- Declination sign (J2000) 24- 25 I2 deg DEd Declination (J2000) 27- 28 I2 arcmin DEm Declination (J2000) 30- 33 F4.1 arcsec DEs Declination (J2000) 35- 40 F6.3 [10-7W] logLHa Log of Hα luminosity 42- 46 F5.3 [10-7W] e_logLHa Log of Hα luminosity error 48- 53 F6.3 Msun/yr SFR Log of Star formation rate 55- 59 F5.3 Msun/yr e_SFR Log of Star formation rate error 61- 63 I3 pc R Radius 65- 66 I2 pc e_R Radius error 68- 72 F5.2 [Msun/yr.kpc+2] SigmaSFR ?=- Log of Star formation rate surface density 74- 77 F4.2 [Msun/yr.kpc+2] e_SigmaSFR ? Log of Star formation rate surface density error 79- 82 F4.2 Msun MHII Log of Ionized gas mass 84- 87 F4.2 Msun e_MHII Log of Ionized gas mass error 89 A1 --- l_SigmaV Limit flag on SigmaV 90- 93 F4.1 km/s SigmaV Velocity dispersion 95- 98 F4.1 km/s e_SigmaV ? Velocity dispersion error 100-105 F6.1 --- alpVir ? Virial parameter 108-114 F7.2 --- e_alpVir ? Virial parameter error
Byte-by-byte Description of file: tablemol.dat
Bytes Format Units Label Explanations
1- 7 A7 --- Gal Name of the galaxy 9- 10 I2 --- Num [1/23] Consecutive number in catalog 12- 13 I2 h RAh Right Ascension (J2000) 15- 16 I2 min RAm Right Ascension (J2000) 18- 21 F4.1 s RAs [0/60] Right Ascension (J2000) 23 A1 --- DE- Declination sign (J2000) 24- 25 I2 deg DEd Declination (J2000) 27- 28 I2 arcmin DEm Declination (J2000) 30- 33 F4.1 arcsec DEs Declination (J2000) 35- 39 F5.3 [K.km/s.pc+2] logLCO Log of CO luminosity 41- 45 F5.3 [K.km/s.pc+2] e_logLCO Log of CO luminosity error 47- 51 F5.3 Msun Mmol Log of Molecular gas mass 53- 57 F5.3 Msun e_Mmol Log of Molecular gas mass error 59- 63 F5.1 pc R Radius 65- 68 F4.1 pc e_R Radius error 70- 73 F4.2 Msun/pc+2 Sigmamol Molecular gas surface density 75- 78 F4.2 Msun/pc+2 e_Sigmamol Molecular gas surface density error 80 A1 --- l_SigmaV limit flag on SigmaV 81- 84 F4.1 km/s SigmaV Velocity dispersion 86- 88 F3.1 km/s e_SigmaV ? Velocity dispersion error 91- 95 F5.3 --- alpVir ? Virial parameter 97-102 F6.4 --- e_alpVir ? Virial parameter error
Byte-by-byte Description of file: list.dat
Bytes Format Units Label Explanations
1- 9 F9.5 deg RAdeg Right Ascension of center (J2000) 10- 18 F9.5 deg DEdeg Declination of center (J2000) 20- 23 I4 --- Nx Number of pixels along X-axis 25- 28 I4 --- Ny Number of pixels along Y-axis 30- 31 I2 --- Nz ? Number of slices for the datacubes 33- 39 F7.2 km/s bVel ? Lower value of velocity interval for the datacubes 41- 47 F7.2 km/s BVel ? Upper value of velocity interval for the datacubes 49- 56 F8.5 km/s dVel ? Velocity resolution for the datacubes 58- 63 I6 Kibyte size Size of FITS file 65- 87 A23 --- FileName Name of FITS file, in subdirectory fits 89-128 A40 --- Title Title of the FITS file
Acknowledgements: Javier Zaragoza-Cardiel, javier.zaragoza(at)astro.unam.mx
(End) Patricia Vannier [CDS] 17-Nov-2016
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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