J/PASP/111/685 HII regions of M33. II. (Hodge+, 1999)
The HII regions of M33.
II. A photometric catalog of 1272 newly identified emission regions.
Hodge P.W., Balsley J., Wyder T.K., Skelton B.P.
<Publ. Astron. Soc. Pac. 111, 685 (1999)>
=1999PASP..111..685H 1999PASP..111..685H
ADC_Keywords: H II regions ; Photometry, H-alpha
Abstract:
We have identified a total of 1272 newly recognized emission regions
in M33. Combined with the previously cataloged total of 1066 H II
regions and supernova remnants, this brings M33's total to 2338
emission regions. This paper provides photometry of the new objects in
Hα, which is combined with data from previous catalogs to
produce a global H II region luminosity function (corrected for
incompleteness) that reaches a faint luminosity limit of
2x1034ergs/s and shows a broad maximum with a peak frequency at
luminosities of 6x1035ergs/s. We also plot the H II region size
distribution and comment on unusual morphologies.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 80 1272 New emission regions in M 33
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See also:
J/AJ/110/2739 : H-alpha emitting regions in M33 (Calzetti+ 1995)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [HBW]
5- 8 I4 --- HBW HBW sequential number
10- 11 I2 h RAh Right ascension (J2000)
13- 14 I2 min RAm Right ascension (J2000)
16- 19 F4.1 s RAs Right ascension (J2000)
21 A1 --- DE- Declination sign (J2000)
22- 23 I2 deg DEd Declination (J2000)
25- 26 I2 arcmin DEm Declination (J2000)
28- 29 I2 arcsec DEs Declination (J2000)
31- 36 F6.2 10-15mW/m2 SHa ? Hα integrated flux (1)
38- 41 I4 arcsec+2 Area ? Area (2)
43- 82 A40 --- Com Comments (3)
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Note (1): The fluxes were measured by integrating over the area within
an outer isophote level of 10-16ergs/s/cm2/arcsec2, as measured
above the local background. Some of the emission regions identified in
this table had no areas which were brighter than this limit and
therefore no flux was measured for these objects.
Note (2): The area for each object is the area on the sky within
an outer isophote level of 10-16ergs/s/cm2/arcsec2^,as measured
above the local background.
Note (3): Unresolved emission regions are identified by the letter "u"
Diffuse regions for which there is no obvious excitation source are
identified by the letter "d"
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History: From PASP electronic version
References:
Wyder et al., Paper I, 1997PASP..109..927W 1997PASP..109..927W
(End) James Marcout, Patricia Bauer [CDS] 14-Sep-1999