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J/A+A/419/563       Planetary nebulae near the Galactic Center (Jacoby+, 2004)

Planetary nebulae near the Galactic Center: Identifications. Jacoby G.H., Van De Steene G. <Astron. Astrophys., 419, 563-582 (2004)> =2004A&A...419..563J
ADC_Keywords: Planetary nebulae ; Spectroscopy Keywords: ISM: planetary nebulae: general - Galaxy: bulge - methods: observational Abstract: We surveyed the central 4x4 degrees of the Galactic center for planetary nebulae in the light of [S III] λ9532 and found 94 PNe that were not previously known, plus 3 that were previously identified as possible candidates. For 63 of these 97 objects, we obtained spectra that are consistent with highly reddened PN while the other 34 could not be recovered spectroscopically and remain unverified. Of the 94 candidates, 54 and 57 were detected via radio at 3 and 6cm, respectively. An additional 20 PNe candidates were found during follow-up Hα imaging but have not yet been verified spectroscopically. Based on the properties of IRAS sources in this region of the Galaxy, and on the total luminosity of the Galactic bulge, the expected number of PNe is 250, only 50% more than the 160 PNe candidates now known. Thus, surveys for PNe in the bulge are approximately two-thirds complete with the remainder likely hidden behind dust. Description: We carried out the survey of the central 4x4degrees using the Case Western Reserve University (CWRU) Burrell Schmidt telescope on Kitt Peak in August 1994 and July 1995. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 69 97 Properties of new Galactic bulge PNe table3.dat 37 20 Optical positions and Hα fluxes for PNe discovered in Hα survey table1.dat 32 16 Field centers for the near-IR PN survey
See also: J/A+AS/126/297 : Abundances of PN near Galactic centre (Ratag+ 1997) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 2 I2 --- JaSt JaSt number 4- 5 I2 h RAh Right ascension (J2000.0) 7- 8 I2 min RAm Right ascension (J2000.0) 10- 14 F5.2 s RAs Right ascension (J2000.0) 16 A1 --- DE- Declination sign (J2000.0) 17- 18 I2 deg DEd Declination (J2000.0) 20- 21 I2 arcmin DEm Declination (J2000.0) 23- 27 F5.2 arcsec DEs Declination (J2000.0) 29- 30 I2 arcsec Diam ? Diameter (1) 32- 37 F6.2 [mW/m2] logF(Ha+[NII]) ? log of Halpha+[NII] flux (2) 38 A1 --- u_logF(Ha+[NII]) Uncertainty flag on logF(Ha+[NII]) 40- 44 F5.3 --- FHa/F(Ha+[NII]) ? Flux ratio, F(Hα)/F(Hα+[NII]) (3) 45 A1 ---- u_FHa/F(Ha+[NII]) Uncertainty flag on FHa/F(Ha+[NII]) 47- 51 F5.2 mJy F6cm ? Flux at 6cm (4) 52 A1 --- u_F6cm Uncertainty flag on F6cm 54- 68 A15 --- Name Name of the PN or IRAS close coincidence (5) 69 A1 --- u_Name [?] Uncertaitny flag on IRAS close coincidence (5)
Note (1): Diameters are taken from the Hα images when possible. Due to poor resolution, the [SIII] diameters are uncertain; those less than 5" are indicated by "--". Note (2): Entries of 0.00 indicate that the PN was not recovered in the Hα imaging. Blank entries indicate that the PN was not within the Hα imaging survey area. Entries with ":" have large uncertainties due to contamination from the residuals of stars, or due to the faintness of the nebula. Note (3): Entries of "--" indicate that the Hα line could not be measured in our spectra. Blank entries indicate that no spectrum was obtained and therefore the PN has not been confirmed spectroscopically. Entries with ":" are uncertain due to weak [NII] lines in the spectrum. Spectra were obtained either at the ESO/La Silla 1.5-m or CTIO 4-m telescopes. Note (4): Radio fluxes were obtained at the Australia Telescope Compact Array and are reported in Van de Steene & Jacoby (2001, Cat. J/A+A/373/536). Note (5): K-series entries are candidates initially suspected by Kohoutek (Kohoutek, 1994AN....315..235K) Close coincidences (<10") with IRAS sources are indicated; 2 IRAS coincidences with somewhat larger separations (10-15") are shown with "?".
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 2 I2 --- JaSt2 JaSt2 number 3 A1 --- n_JaSt2 [bc] Note on JaSt2 (1) 5- 6 I2 h RAh Right ascension (J2000.0) 8- 9 I2 min RAm Right ascension (J2000.0) 11- 14 F4.1 s RAs Right ascension (J2000.0) 16 A1 --- DE- Declination sign (J2000.0) 17- 18 I2 deg DEd Declination (J2000.0) 20- 21 I2 arcmin DEm Declination (J2000.0) 23- 26 F4.1 arcsec DEs Declination (J2000.0) 29- 30 I2 arcsec Diam Diameter 32- 37 F6.2 [mW/m2] logF(Ha+[NII]) Flux of Halpha+[NII] (2)
Note (1): Individual notes use the following abbreviations: b = Large, possibly bi-polar c = Unusually bright knot just off-center; possibly coincident with IRAS 17468-2932 and 1RXS J175001.8-293316. Note (2): Entries all have very large uncertainties because of the degree of crowding from stars over the large diameters of these nebulae.
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Field Field number 4- 5 I2 h RAh Right ascension (J2000) 7- 8 I2 min RAm Right ascension (J2000) 10- 11 I2 s RAs Right ascension (J2000) 13 A1 --- DE- Declination sign (J2000) 14- 15 I2 deg DEd Declination (J2000) 17- 18 I2 arcmin DEm Declination (J2000) 20- 21 I2 arcsec DEs Declination (J2000) 23- 32 A10 "DD/MM/YYYY" Date UT Date
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 06-Jun-2005
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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