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J/MNRAS/357/732   2MASS photometry of galactic planetary nebulae (Larios+, 2005)

An analysis of 2MASS near-infrared photometry for galactic planetary nebulae. Larios G.R., Phillips J.P. <Mon. Not. R. Astron. Soc., 357, 732-752 (2005)> =2005MNRAS.357..732L
ADC_Keywords: Surveys ; Planetary nebulae ; Infrared sources Keywords: surveys - planetary nebulae: general - infrared: ISM Abstract: The recently published 2MASS all-sky infrared survey (II/246) includes JHKs photometry of over 300 million sources. It also provides sizes and aspect ratios for the ∼0.55 per cent of objects that appear in the extended-source catalogue. Although most of these detections correspond to galaxies, stars, H II regions, young stellar objects, reflection nebulae and so forth, a number of them also appear to correspond to galactic planetary nebulae (PNe). We have used this survey to determine the near-infrared properties of some 325 known galactic PNe. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 131 325 2MASS NIR measurements of galactic planetary nebulae
See also: II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) 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
Bytes Format Units Label Explanations
1- 11 A11 --- Name Name of the planetary name 13- 14 I2 h RAh Right ascension (J2000) 16- 17 I2 min RAm Right ascension (J2000) 19- 23 F5.2 s RAs Right ascension (J2000) 25 A1 --- DE- Declination sign (J2000) 26- 27 I2 deg DEd Declination (J2000) 29- 30 I2 arcmin DEm Declination (J2000) 32- 35 F4.1 arcsec DEs Declination (J2000) 37 A1 --- l_Jmag Limit flag on Jmag 38- 43 F6.3 mag Jmag ?=- J magnitude 45- 49 F5.3 mag e_Jmag ?=- rms uncertainty on Jmag 51 A1 --- l_Hmag Limit flag on Hmag 52- 57 F6.3 mag Hmag ?=- H magnitude 59- 63 F5.3 mag e_Hmag ?=- rms uncertainty on Hmag 65 A1 --- l_Ksmag Limit flag on Ksmag 66- 71 F6.3 mag Ksmag ?=- Ks magnitude 73- 77 F5.3 mag e_Ksmag ?=- rms uncertainty on Ksmag 79- 82 F4.1 arcsec QKs ?=- Ks-band semi-major axis 84- 88 F5.3 --- Gamma(Ks) ?=- Aspect ratio 90- 92 I3 deg PA [-90/90]?=- Position angle of the source major axis 94- 99 F6.2 --- c ?=- Extinction coefficient 101-105 F5.1 arcsec Qrad ?=- Comparative radio (or optical) dimension 107-112 F6.1 mJy S5GHz ?=- Flux at 5GHz 114-118 F5.2 --- F(H2)/F(Brg) ?=- H2S(1)/Brγ ratio 120-124 F5.3 --- He+/H+ ?=- He+/H+ ratio 128-131 A4 --- Rem Remarks (1)
Note (1): Remarks as follows: 1 = Source appears extended in 2MASS imaging, but is not contained in the Extended Source Catalogue 2 = Possible weak contamination of fluxes by field star(s) 3 = Extended nebular emission is observed but weak, and fluxes are dominated by the central star 4 = Possible strong contamination of fluxes by field star(s) 5 = Possibility of source confusion 6 = Fluxes may be contaminated by bright star diffraction pattern 7 = The size in the 2MASS Extended Source Catalogue appears too great, and may be affected by the high density of field stars 8 = Source weak, only partially detected; 2MASS sizes may be in error
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 09-Feb-2006
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