J/other/RMxAA/44.161 HII regions in NGC 5055 (Rozas+, 2008)
HII regions in NGC 5055. II. Physical properties.
Rozas M.
<Rev. Mex. Astron. Astrofis., 44, 161-170 (2008)>
=2008RMxAA..44..161R 2008RMxAA..44..161R
ADC_Keywords: Galaxies, peculiar ; H II regions ; Photometry, CCD ; Abundances
Keywords: galaxies: individual (NGC 5055) - galaxies: kinematics and dynamics -
galaxies: spiral
Abstract:
In this paper, using CCD observations of the galaxy NGC 5055 in the
emission lines of Halpha and Hbeta (Rozas, 2007RMxAA, submitted),
together with CCD observations in the narrow-band filters of [OII],
[OIII], [SII], and S[III] lines we have calculated the equivalent
widths, excitations, ionization hardness, ionization parameters and
metallicities for the regions catalogued in Rozas (2007RMxAA,
submitted).
Description:
The observations and data reductions procedures for the Halpha and
Hbeta images are summarized in Paper I (Rozas, 2007RMxAA, submitted).
The observations of NGC 5055 in the other lines were made during the
same nights of June 14-18 2005 with the 0.84m telescope of the
Observatorio Astronomico Nacional in the Sierra San Pedro Martir.
Objects:
-----------------------------------------
RA (2000) DE Designation(s)
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13 15 49.3 +42 01 46 NGC 5055 = M 63
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 19 274 NGC 5055 [OII], [OIII], [SII] and [SIII] fluxes
table3.dat 18 274 NGC 5055 R23 parameter, oxygen abundance and
ionization hardness parameter
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- [R2008] Region sequential number (location undefined)
5- 7 I3 --- [OII]/Hb ? [OII]/Hbeta abundance ratio (1)
9- 11 I3 --- [OIII]/Hb ? [OIII]/Hbeta abundance ratio (1)
13- 15 I3 --- [SII]/Hb ? [SII]/Hbeta abundance ratio (1)
17- 19 I3 --- [SIII]/Hb ? [SIII]/Hbeta abundance ratio (1)
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Note (1): All the quantities are relative to Hbeta=100 and are corrected for
extinction.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- [R2008] Region sequential number (location undefined)
5- 8 F4.2 --- R23 ? R23 parameter (1)
10- 13 F4.2 --- 12+log(O/H) ? 12+log(O/H) abundance
15- 18 F4.2 --- eta ? Ionization hardness parameter (2)
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Note (1): R23 defined as:
R23=[I([OII]3727)+I([OIII]4959,5007)]/I(Hbeta)
Note (2): η is defined as
η = (([OII]3726,3729)/([OIII]4959,5007))
/ (([SII]3717,6731)/([SIII]9069,9532))
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 27-Jan-2009