J/ApJS/112/29 HII regions in southern spiral galaxies (Feinstein 1997)
H II regions in southern spiral galaxies: the Hα luminosity function
Feinstein C.
<Astrophys. J. Suppl. Ser. 112, 29 (1997)>
=1997ApJS..112...29F 1997ApJS..112...29F (SIMBAD/NED BibCode)
ADC_Keywords: H II regions
Keywords: galaxies: ISM - galaxies: spiral - H II regions
Abstract:
By using narrow-band filters to measure the Hα flux, a catalog
of H II regions in several spiral galaxies was made, consisting of the
position and flux of the objects. For each galaxy the Hα
luminosity function was derived. From the observed sample, two
galaxies were found to have type II luminosity functions. Some simple
models were made in order to understand the nature of the luminosity
function (both type I and type II). The goal of our work was to
simulate how a change of star-forming region, the cluster-mass
distribution, or the initial mass function (in an evolutionary
environment) can change the shape of the luminosity function.
Objects:
----------------------------------------------------------
RA (2000) DE Designation(s)
----------------------------------------------------------
04 45 42 -59 15.0 NGC 1672
09 45 39 -31 11.5 NGC 2997
12 08 11 +02 52.7 NGC 4123
12 39 39 -05 20.7 NGC 4593
12 40 36 -05 07.9 NGC 4602
13 56 11 +05 00.9 NGC 5364
14 35 48 +08 18 NGC 5681
16 09 54 +00 42 NGC 6070
16 21 48 -02 17.0 NGC 6118
17 32 20 +07 04 NGC 6384
23 04 57 +12 19.3 NGC 7479
23 16 11 -42 35.0 NGC 7552
----------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
tables.dat 33 1505 Flux (tables 4 to 15)
--------------------------------------------------------------------------------
See also:
J/A+A/416/475 : Long slit spectroscopy of HII regions (Marquez+, 2004)
J/A+A/393/389 : Hα in HII regions in spiral galaxies (Marquez+, 2002)
Byte-by-byte Description of file: tables.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Gal Galaxy name
10- 12 I3 --- Reg H II region number
14- 19 F6.1 arcsec oRA [-194/180] Intensity peak relative position (1)
21- 26 F6.1 arcsec oDE [-203/185] Intensity peak relative position (1)
28- 33 F6.3 [10-7W] log(Flux) Hα flux, assuming H0=75km/s/Mpc
--------------------------------------------------------------------------------
Note (1): Relative positions to the centre of the galaxy.
--------------------------------------------------------------------------------
Acknowledgements: Copied form the ApJS electronic version
(End) Patricia Bauer [CDS] 02-Apr-1998