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J/A+A/495/447       PN and HII regions in NGC6822    (Hernandez-Martinez+, 2009)

Emission line objects in NGC 6822. New planetary nebula candidates. Hernandez-Martinez L., Pena M. <Astron. Astrophys., 495, 447-455 (2009)> =2009A&A...495..447H
ADC_Keywords: Galaxies, nearby ; Planetary nebulae ; H II regions ; Spectroscopy Keywords: ISM: HII regions - ISM: planetary nebulae: general - galaxies: individual: NGC 6822 (DDO 209) Abstract: Images obtained with the CTIO 4-m telescope and the MOSAIC-2 wide field camera in [OIII] 5007 and Halpha on-band and off-band filters are analyzed to search for emission line objects in the dwarf galaxy NGC 6822. In particular we search for planetary nebula (PN) candidates. In addition, imaging and spectroscopy of a sub-sample of objects obtained with the ESO VLT and FORS 2 spectrograph are used to calibrate the MOSAIC imaging. In the continuum-subtracted images, a large number of line emission regions were detected, for which we measured instrumental magnitudes in all the filters. The [OIII] 5007 and Halpha+[NII] magnitudes were calibrated with the spectroscopy. Description: NGC 6822 was observed on 2005 September 4 and October 9, using the CTIO 4-m Blanco telescope with the MOSAIC 2 camera. Spectrophotometric data for several PN candidates and compact HII regions were obtained with the ESO Very LargeTelescope FORS 2 in MXU mode, on 2006 August 20 and 21. On 2006 August 20 and 22, we observed NGC 6822 with the ESO VLT UT1 (Antu) telescope, in Cerro Paranal, Chile. The FORS 2 (Focal Reducer Spectrograph 2) was used to obtain spectroscopic data to characterize the interstellar medium in NGC 6822 (program ID 077.B-0480). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 116 72 Characteristics of emission line objects in NGC 6822
See also: J/AJ/109/173 : BVR photometry of NGC 6822 (Marconi+ 1995) J/AJ/121/2020 : CTIO and WFPC2 photometry in NGC 6822 (Bianchi+, 2001) J/AJ/123/832 : C star population in NGC 6822 (Letarte+, 2002) J/AJ/128/2815 : ARAUCARIA: NGC 6822 Cepheid variables (Pietrzynski+, 2004) J/A+A/450/873 : ARAUCARIA: NGC 6822 bright variables (Mennickent+, 2006) J/ApJ/647/1056 : ARAUCARIA: NGC 6822 Cepheid variables (Gieren+, 2006) J/A+A/429/837 : IJKs photometry of late-type stars in NGC 6822 (Cioni+, 2005) J/A+A/431/1189 : BV photometry of NGC 6822 variables (Baldacci+, 2005) J/A+A/454/717 : Near-IR photometry of C & AGB stars in NGC 6822 (Kang+, 2006) J/A+A/456/905 : JKs, i'g'r' photometry of C stars in NGC 6822 (Demers+, 2006) J/AJ/132/378 : HST and UV photometry of NGC 6822 (Bianchi+, 2006) J/AJ/132/1372 : Chandra observation of NGC 6822 (Tennant+, 2006) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 7 A7 --- [HP2009] Object Name (2) 9- 10 I2 h RAh Right ascension (J2000) 12- 13 I2 min RAm Right ascension (J2000) 15- 19 F5.2 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- 31 F4.1 arcsec DEs Declination (J2000) 33 A1 --- l_mi(5007) Limit flag on mi(5007) 34- 38 F5.2 mag mi(5007) Instrumental magnitude in [OIII]5007 image 40 A1 --- l_mi(D51) Limit flag on mi(D51) 41- 45 F5.2 mag mi(D51) ?=- Instrumental magnitude in D51 (5130Å) image 47- 51 F5.2 mag mi(Ha) Instrumental magnitude in Ha=Hα+[NII]6548,6583 image 53 A1 --- l_mi(Ha8) Limit flag on mi(Ha8) 54- 58 F5.2 mag mi(Ha8) ?=- Instrumental magnitude in Ha+8 (6650Å) image 60- 65 F6.2 [mW/m2] lF5007 ? [OIII]5007Å flux from spectroscopy 67 A1 --- l_lF5007a Limit flag on logF5007a 68- 73 F6.2 [mW/m2] lF5007a ? 5007Å flux calculated from equation in Fig.3a (logF5007=-[4.82+0.44mi(5007)]) 75- 80 F6.2 [mW/m2] lHa ? Hα+[NII] flux from spectroscopy 82- 87 F6.2 [mW/m2] lHab Hα+[NII] flux calculated from equation in Fig. 3b (logHa=-[4.94+0.44mi(Ha)]) 89- 92 F4.2 --- 5007/Ha ?=- ([OIII]5007)/(Hα+[NII]) flux ratio 94- 99 A6 --- OName Other name (1) 101-116 A16 --- Com Comments
Note (1): Previous ID from Leisy et al. (2005A&A...436..437L), Richer and McCall (2007ApJ...658..328R) and Killen and Dufour (1982PASP...94..444K) PN NN = [LCM2005] PN NN in Simbad HII NN = [LCM2005] HII NN in Simbad KD_SNN = KD SNN in Simbad KD_DNN = KD DNN in Simbad Note (2): Object name may designate a planetary nebula (PN), a HII region (HII), or Hα emission (Ha).
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 29-Jun-2009
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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