J/A+A/546/A2 Spectroscopy of HII regions in nearby galaxies (Sanchez+, 2012)
Integral field spectroscopy of a sample of nearby galaxies.
II. Properties of the HII regions.
Sanchez S.F., Rosales-Ortega F.F., Marino R.A., Iglesias-Paramo J.,
Vilchez J.M., Kennicutt R.C., Diaz A.I., Mast D., Monreal-Ibero A.,
Garcia-Benito R., Bland-Hawthorn J., Perez E., Gonzalez Delgado R.,
Husemann B., Lopez-Sanchez A.R., Cid Fernandes R., Kehrig C., Walcher C.J.,
Gil de Paz A., Ellis S.
<Astron. Astrophys. 546, A2 (2012)>
=2012A&A...546A...2S 2012A&A...546A...2S
ADC_Keywords: Galaxy catalogs ; H II regions ; Spectroscopy ; Equivalent widths
Keywords: galaxies: ISM - galaxies: spiral - galaxies: evolution -
galaxies: stars formation - galaxies: fundamental parameters -
galaxies: abundances
Description:
In this work we analyze the spectroscopic properties of a large number
of HII regions, ∼2600, located in 38 galaxies. The sample of galaxies
has been assembled from the face-on spirals in the PINGS survey and a
sample described in Marmol-Queralto (2011A&A...534A...8M 2011A&A...534A...8M). All the
galaxies were observed using Integral Field Spectroscopy with a
similar setup, covering their optical extension up to ∼2.4 effective
radii within a wavelength range from ∼3700 to ∼6900Å.
We develop a new automatic procedure to detect HII regions, based on
the contrast of the Hα intensity maps extracted from the
datacubes. Once detected, the procedure provides us with the
integrated spectra of each individual segmented region. In total, we
derive good quality spectroscopic information for ∼2600 independent
HII regions/complexes. This is by far the largest nearby 2-dimensional
spectroscopic survey presented on this kind of regions up-to-date.
Even more, our selection criteria and dataset guarantee that we cover
the regions in an unbiased way, regarding the spatial sampling.
A well-tested automatic decoupling procedure has been applied to
remove the underlying stellar population, deriving the main properties
(intensity, dispersion and velocity) of the strongest emission lines
in the considered wavelength range (covering from [OII]3727 to
[SII]6731). A final catalogue of the spectroscopic properties of these
regions has been created for each galaxy.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 116 38 Main properties of studied galaxies
catalog.dat 415 2573 HII regions catalogue
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See also:
J/A+AS/91/285 : HII galaxies spectrophotometric catalogue (Terlevich+, 1991)
J/ApJS/105/93 : HII Regions in Nearby Seyfert Galaxies (Evans+ 1996)
J/ApJS/112/29 : HII regions in southern spiral galaxies (Feinstein 1997)
J/AJ/116/2805 : HII regions in spiral galaxies (Van Zee+, 1998)
J/A+A/393/389 : Hα in HII regions in spiral galaxies (Marquez+, 2002)
J/AZh/79/867 : Abundances of HII regions in blue galaxies (Holovatyy+, 2002)
J/A+A/462/535 : Low-metallicity HII regions and galaxies (Yin+, 2007)
J/A+A/476/89 : HII galaxies narrow-band Hβ images (Lagos+, 2007)
J/ApJS/178/1 : Distribution of HII regions in disk galaxies (Sanchez+, 2008)
J/A+A/481/645 : HII regions in interacting galaxies (Ferreiro+, 2008)
J/ApJ/700/654 : Keck spectroscopy of extragalactic HII regions (Esteban+ 2009)
J/A+A/529/A149 : HII regions in low-metallicity galaxies (Guseva+, 2011)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1 A1 --- S [P] Sample: 'P' for PINGS galaxies
3- 15 A13 --- Name Galaxy name
28- 29 I2 h RAh Right Ascension J2000 (hours)
30 A1 --- --- [:]
31- 32 I2 min RAm Right Ascension J2000 (minutes)
33 A1 --- --- [:]
34- 37 F4.1 s RAs Right Ascension J2000 (seconds)
39 A1 --- DE- Declination J2000 (sign)
40- 41 I2 deg DEd Declination J2000 (degrees)
42 A1 --- --- [:]
43- 44 I2 arcmin DEm Declination J2000 (minutes)
45 A1 --- --- [:]
46- 49 F4.1 arcsec DEs Declination J2000 (seconds)
51- 56 A6 --- MType Morphological type, from NED or Hyperleda
59- 65 F7.5 --- z Redshift (from NED)
67- 72 F6.3 mag Bmag Dust corrected B-band magnitude from Hyperleda
73- 78 F6.3 mag B-V (B-V) colors obtained from Hyperleda
79- 82 F4.1 mag DM Distance modulus extracted from Hyperleda
84- 88 F5.1 mag BMag Dust corrected absolute B magnitude from
Hyperleda
90- 92 I3 km/s Vrot Rotation velocity from NED.
94- 97 F4.1 deg i Absolute value of the inclination angle
derived from Hyperleda
99-101 I3 deg PA Position angle values from our own analysis
103-107 F5.1 arcsec reff Effective radius from this work
109-111 A3 --- Disk Disk classification (L=Late, E=early,
I=intermediate; criteria from Laurikainen
et al. 2010MNRAS.405.1089L 2010MNRAS.405.1089L)
113-116 A4 --- Arms Spiral arm classification following Elmegreen
& Elmegreen (1987ApJ...314....3E 1987ApJ...314....3E)
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Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- ID ID of the HII region in the catalogue (1)
19- 27 F9.4 deg RAdeg Right ascension of the HII region (J2000)
29- 35 F7.4 deg DEdeg Declination of the HII region (J2000)
37- 43 F7.1 arcsec Xobs Relative right ascension from the center
45- 50 F6.1 arcsec Yobs Relative declination from the center
52- 58 F7.1 kpc Xres Deprojected ΔX coordinate from
the center
60- 65 F6.1 kpc Yres Deprojected ΔY coordinate from
the center
67- 73 F7.1 kpc R Deprojected distance to the center
75- 80 F6.1 deg theta Deprojected position angle θ
82- 83 I2 --- NArm ID of the nearest ARM
85 I1 --- fArm [0/1] 1=the HII region is most probably
associated to NArm, 0=inter-arm region
87- 92 F6.1 arcsec DminArm Minimum Distance to the nearest arm
94- 99 F6.1 arcsec DArm Spiralcentric distance (distance along
the nearest spiral arm)
101-106 F6.1 deg thetaArm Angular Distance to the nearest arm
108-114 F7.1 km/s VelHa Hα rotational velocity of ionized gas
116-121 F6.1 km/s e_VelHa Error on VelHa
123-127 F5.2 [10-23W] logHa log10 of the Hα dust corrected
luminosity (in 10-16erg/s)
129-132 F4.2 [10-23W] e_logHa Error on logHa
134-141 F8.3 10-19W/m2 FluxHb Hβ observed flux (10-16erg/s/cm2)
143-149 F7.3 10-19W/m2 e_FluxHb Error on FluxHb
151-157 F7.3 --- OII/Hb ?=- OII3727/Hβ line ratio
159-164 F6.3 --- e_OII/Hb ?=- Error on OII/Hb
166-172 F7.3 --- OIII/Hb ?=- OIII5007/Hβ line ratio
174-179 F6.3 --- e_OIII/Hb ?=- Error on OIII/Hb
181-187 F7.3 --- OI/Hb ?=- OI6300/Hβ line ratio
189-194 F6.3 --- e_OI/Hb ?=- Error on OI/Hb
196-202 F7.3 --- Ha/Hb Hα/Hβ line ratio
204-209 F6.3 --- e_Ha/Hb Error on Hα/Hβ
211-217 F7.3 --- NII/Hb ?=- NII6583/Hβ line ratio
219-224 F6.3 --- e_NII/Hb ?=- Error on NII/Hb
226-232 F7.3 --- He/Hb ?=- HeI6678/Hβ line ratio
234-239 F6.3 --- e_He/Hb ?=- Error on He/Hb
241-247 F7.3 --- SII1/Hb ?=- SII6717/Hβ line ratio
249-254 F6.3 --- e_SII1/Hb ?=- Error on SII1/Hb
256-262 F7.3 --- SII2/Hb ?=- SII6731/Hβ line ratio
264-269 F6.3 --- e_SII2/Hb ?=- Error on SII2/Hb
271 I1 --- BPT [0/3] BPT type: 1=SF; 2=SF/AGN; 3=AGN (2)
273-280 F8.2 0.1nm EWOII ?=- OII3727 equivalent width
282-289 F8.2 0.1nm e_EWOII ?=- Error on EWOII
291-298 F8.2 0.1nm EWHb Hβ equivalent width
300-307 F8.2 0.1nm e_EWHb Error on EWHb
309-316 F8.2 0.1nm EWOIII OIII5007 equivalent width
318-325 F8.2 0.1nm e_EWOIII Error on EWOIII
327-334 F8.2 0.1nm EWOI ?=- OI6300 equivalent width
336-343 F8.2 0.1nm e_EWOI ?=- Error on EWOI
345-352 F8.2 0.1nm EWHa Hα equivalent width
354-361 F8.2 0.1nm e_EWHa Error on EWHa
363-370 F8.2 0.1nm EWNII NII6583 equivalent width
372-379 F8.2 0.1nm e_EWNII ?=- Error on EWNII
381-388 F8.2 0.1nm EWHe HeI6678 equivalent width
390-397 F8.2 0.1nm e_EWHe Error on EWHe
399-406 F8.2 0.1nm EWSII SII6717+6731 equivalent width
408-415 F8.2 0.1nm e_EWSII Error on EWSII
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Note (1): Names as 2MASXJ1319+53-NNN, CGCNNN-NNN-NNN, IC2204-NNN,
MRK1477-NNN, NGCNNNN-NNN, UGCNNNNN-NNN.
Note (2): flag indicating the location of the ionized gas region in the
classical BPT (1981PASP...93....5B 1981PASP...93....5B) [OIII]/Hβ vs. [NII]/Hα
diagnostic diagram, with the following values:
0 = location undetermined, due to the lack of any of the required
line ratios with sufficient S/N for this analysis;
1 = region located below the Kauffmann et al. (2003MNRAS.346.1055K 2003MNRAS.346.1055K)
demarcation line, i.e., corresponding to a classical star-forming
HII region;
2 = region located in the intermediate area within the Kauffmann et al.
(2003MNRAS.346.1055K 2003MNRAS.346.1055K) and the Kewley et al. (2001ApJ...556..121K 2001ApJ...556..121K)
demarcation lines
3 = region located above the Kewley et al. (2001ApJ...556..121K 2001ApJ...556..121K)
demarcation line, i.e., corresponding to the area expected from
being ionized by an AGN and/or a shock.
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Acknowledgements:
Sebastian F. Sanchez, sanchez(at)iaa.es
References:
Marmol-Queralto et al., Paper I 2011A&A...534A...8M 2011A&A...534A...8M
History:
* 27-Sep-2012: on-line version
* 16-Sep-2014: positions of CGCG 293-023 and UGC3140 HII regions corrected
(End) Patricia Vannier [CDS] 10-Aug-2012