J/MNRAS/431/2 Hα fluxes of Galactic planetary nebulae (Frew+, 2013)
A catalogue of integrated Hα fluxes for 1258 Galactic planetary nebulae.
Frew D.J., Bojicic I.S., Parker Q.A.
<Mon. Not. R. Astron. Soc., 431, 2-26 (2013)>
=2013MNRAS.431....2F 2013MNRAS.431....2F
ADC_Keywords: H II regions ; Planetary nebulae ; Spectroscopy
Keywords: techniques: photometric - techniques: spectroscopic - catalogues -
HII regions - planetary nebulae: general
Abstract:
We present a catalogue of new integrated Hα fluxes for 1258
Galactic planetary nebulae (PNe), with the majority, totalling 1234,
measured from the Southern Hα Sky Survey Atlas (SHASSA) and/or
the Virginia Tech Spectral-line Survey (VTSS). Aperture photometry on
the continuum-subtracted digital images was performed to extract
Hα+[NII] fluxes in the case of SHASSA, and Hα fluxes from
VTSS. The [NII] contribution was then deconvolved from the SHASSA flux
using spectrophotometric data taken from the literature or derived by
us. Comparison with previous work shows that the flux scale presented
here has no significant zero-point error. Our catalogue is the largest
compilation of homogeneously derived PN fluxes in any waveband yet
measured, and will be an important legacy and fresh benchmark for the
community. Amongst its many applications, it can be used to determine
statistical distances for these PNe, determine new absolute magnitudes
for delineating the faint end of the PN luminosity function, provide
baseline data for photoionization and hydrodynamical modelling, and
allow better estimates of Zanstra temperatures for PN central stars
with accurate optical photometry. We also provide total Hα
fluxes for another 75 objects which were formerly classified as PNe,
as well as independent reddening determinations for ∼270 PNe, derived
from a comparison of our Hα data with the best literature
Hβ fluxes. In an appendix, we list corrected Hα fluxes for
49 PNe taken from the literature, including 24 PNe not detected on
SHASSA or VTSS, re-calibrated to a common zero-point.
Description:
SHASSA is a robotic wide-angle digital imaging survey covering
21000deg2 of the southern and equatorial sky undertaken with the aim
of detecting Hα emission from the warm ionized interstellar
medium (WIM). The survey consists of 2168 images covering 542 fields
south of +16° declination, between Galactic longitudes of 195°
and 45° at the mid-plane (Gauataud et al., 2001PASP..113.1326G 2001PASP..113.1326G,
GMR01).
A complementary survey to SHASSA, the VTSS (Dennison et al.,
1998PASA...15..147D 1998PASA...15..147D), covers a wide strip around the northern Galactic
plane (15°<l<230°, |b|≤30°), north of δ>-15°.
Like SHASSA, the combination of fast optics, narrow-band interference
filters and a CCD detector gives this survey very deep sensitivity to
diffuse Hα emission.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 98 1119 Hα fluxes for 1120 true and possible PNe
measured from SHASSA (Southern Hα Sky
Survey Atlas)
table4.dat 81 177 Hα fluxes for 178 true and possible PNe
measured from VTSS (Virginia Tech Spectral-line
Survey)
tableb1.dat 100 77 Hα fluxes for 77 objects that have been
misclassified as PNe in the literature
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See also:
B/pn : Atlas of Galactic Planetary Nebulae (Miszalski+ 2011)
IV/24 : Catalogue of Galactic Planetary Nebulae (Kohoutek, 2001)
V/84 : Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (Acker+, 1992)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- PNG PNG designation (LLL.l+BB.bA)
13- 29 A17 --- Name Planetary nebulae name
31- 32 I2 h RAh Right ascension (J2000)
34- 35 I2 min RAm Right ascension (J2000)
37- 40 F4.1 s RAs [0/60] Right ascension (J2000)
42 A1 --- DE- Declination sign (J2000)
43- 44 I2 deg DEd Declination (J2000)
46- 47 I2 arcmin DEm Declination (J2000)
49- 50 I2 arcsec DEs [0/60] Declination (J2000)
52- 55 F4.1 --- R[NII] ?=- Observed nebular
λλ6548,6584/Hα ratio
56 A1 --- u_R[NII] Uncertainty flag on R[NII]
57 A1 --- l_logFred Limit flag on logFred
58- 63 F6.2 [mW/m2] logFred Average red (Hα+[NII]) flux
65 A1 --- l_logF(Ha) Limit flag on logF(Ha)
66- 71 F6.2 [mW/m2] logF(Ha) ?=- Corrected Hα flux
73- 76 F4.2 [mW/m2] e_logF(Ha) ? rms uncertainty on logF(Ha)
78- 81 F4.1 arcmin rap ?=- Adopted aperture radius
("---" for tba, unexplained)
83 I1 --- Nf ? Number of independent fields from which a
measurement is obtained
85- 88 F4.2 [-] cbeta ?=- Derived logarithmic extinction (G2)
89 A1 --- u_cbeta [:] Uncertainty flag on cbeta
91- 98 A8 --- Notes Note(s) (G1)
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- PNG PNG designation (LLL.l+BB.bA)
13- 29 A17 --- Name Planetary nebulae name
31- 32 I2 h RAh Right ascension (J2000)
34- 35 I2 min RAm Right ascension (J2000)
37- 40 F4.1 s RAs Right ascension (J2000)
42 A1 --- DE- Declination sign (J2000)
43- 44 I2 deg DEd Declination (J2000)
46- 47 I2 arcmin DEm Declination (J2000)
49- 50 I2 arcsec DEs Declination (J2000)
52- 57 F6.2 [mW/m2] logF(Ha) ?=- Corrected Hα flux
59- 62 F4.2 [mW/m2] e_logF(Ha) ? rms uncertainty on logF(Ha)
64- 67 F4.1 arcmin rap Adopted aperture radius
69 I1 --- Nf ? Number of independent fields from which a
measurement is obtained
71- 74 F4.2 [-] cbeta ?=- Derived extinction (logF(Hb)-logI(Hb))
75 A1 --- u_cbeta [:] Uncertainty flag on cbeta
76- 83 A8 --- Notes Note(s) (G1)
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Byte-by-byte Description of file: tableb1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- PNG PNG designation (LLL.l+BB.bA)
13- 29 A17 --- Name Planetary nebulae name
31- 32 I2 h RAh Right ascension (J2000)
34- 35 I2 min RAm Right ascension (J2000)
37- 40 F4.1 s RAs [0/60] Right ascension (J2000)
42 A1 --- DE- Declination sign (J2000)
43- 44 I2 deg DEd Declination (J2000)
46- 47 I2 arcmin DEm Declination (J2000)
49- 50 I2 arcsec DEs [0/60] Declination (J2000)
52- 55 F4.1 --- R[NII] ?=- Observed nebular
λλ6548,6584/Hα ratio
58- 63 F6.2 [mW/m2] logFred ? Average red (Hα+[NII]) flux
66- 71 F6.2 [mW/m2] logF(Ha) ? Corrected Hα flux
73- 76 F4.2 [mW/m2] e_logF(Ha) ? rms uncertainty on logF(Ha)
78- 81 F4.1 arcmin rap ? Adopted aperture radius
83 I1 --- Nf ? Number of independent fields from which a
measurement is obtained
86- 95 A10 --- Type Type of object (1)
98-100 A3 --- Notes Note(s) (G1)
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Note (1): the types are:
ELS = emission-line star
H II = HII region
SNR = supernova remnant
BCD = blue compact dwarf
SyS = symbiotic star
CV = cataclysmic variable
post-RSG = post-red supergiant
WR neb = Wolf-Rayet nebula
(c)LBV = (candidate) luminous blue variable
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Global notes:
Note (G1): Notes as follows:
1 = Possible PN
2 = pre-PN
3 = transition object
4 = uncertain counts
5 = confused with nearby object
6 = bad pixels in aperture
7 = object near field edge
8 = flux excludes halo
9 = flux corrected for CSPN
10 = Wolf-Rayet CSPN
N = previously unpublished object
V = very low excitation PN
C = specific comment given:
* BoBn 1 : possibly related to Sgr dSph tidal stream;
* Te 11 : possible CV bowshock nebula;
* Abell 12 : is confused with a bright star;
* K 2-2 : flux is for bright inner region only;
* KLSS 1-8 : R[NII] is uncertain
* HFG 2 : flux includes superimposed H II region
* Hen 2-25 : probable symbiotic outflow
* Abell 33 : nebula is confused with nearby star
* Lo 4 : variable emission-line central star
* Abell 35 : unlikely PN (Frew 2008, PhD thesis Macquarie Univ.; 2008)
* Mu 1 : discovered by A. Murrell
* Cn 1-1 : yellow symbiotic star
* Mz 3 : probable symbiotic outflow
* Abell 38 : R[NII] is uncertain
* M 2-9 : probable symbiotic outflow
* Terz N 2337 : R[NII] is very uncertain
* PHR J1757-1649 : flux includes superimposed H II region
* SB 17 : central star is V348 Sgr, a hot R CrB star
* StWr 2-21, Wray 16-423 and Hen 2-436 are Sgr dSph members
* Abell 58 : born-again object
* NGC 7293 : total flux including outer halo is logF(Ha)=-8.84.
* Kn 49 : possibly an isolated SNR filament
* Wray 16-20 : part of the Vela SNR
* H 2-12 : part of Kepler's SN
* Th 4-4 : flux is variable
* GK Per : flux includes part of outer nebula
Note (G2): the logarithmic extinction cβ is defined as
cβ=log(F(Hβ)/I(Hβ)), ratio of observed to intrinsic
fluxes; in the physical conditions of the planetary nebula, it is
given by: cβ=3.125log[F(Hα)/F(Hβ)]-1.43.
The extinction for Hα can be derived with cα=0.70cβ
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 09-May-2014