J/A+A/470/787 High energy peaked BL Lacs optical spectros. (Piranomonte+, 2007)
The sedentary survey of extreme high-energy peaked BL Lacs.
III. Results from optical spectroscopy.
Piranomonte S., Perri M., Giommi P., Landt H., Padovani P.
<Astron. Astrophys., 470, 787-809 (2007)>
=2007A&A...470..787P 2007A&A...470..787P
ADC_Keywords: BL Lac objects ; Surveys ; X-ray sources ; Radio sources ;
Redshifts
Keywords: galaxies: active - galaxies: BL Lacertae objects: general - surveys
Abstract:
The multi-frequency sedentary survey is a flux-limited, statistically
well-defined sample of highly X-ray dominated (i.e., with a very high
X-ray to radio flux ratio) BL Lacertae objects, which includes 150
sources. In this paper, the third of the series, we report the results
of a dedicated optical spectroscopy campaign that, together with
results from other independent optical follow-up programs, led to the
spectroscopic identification of all sources in the sample.
We carried out a systematic spectroscopic campaign for the observation
of all unidentified objects of the sample using the ESO 3.6m, the
KPNO 4m, and the TNG optical telescopes.
Description:
Spectroscopic observations of the Sedentary sources still unidentified
and of BL Lacs without redshift were carried out during the period
1999-2003 at the KPNO 4m, at the ESO 3.6m and at the TNG telescopes.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 90 76 Positional information
table4.dat 74 68 *Objects properties
table6.dat 35 39 *Featureless sedentary HBL
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Note on table4.dat: SHBL J011501.9-340027 corrected into SHBL J011501.6-340027
Note on table6.dat: SHBL J032350.7+071736 corrected into SHBL J032350.7+071737
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See also:
J/A+A/434/385 : X-ray/radio data of high energy peaked BL Lacs (Giommi+, 2005)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 21 A21 --- Name IAU name (SHBL JHHMMSS.s+DDMMSS or
1RXS JHHMMSS.s+DDMMSS)
23- 24 I2 h RAh RASSBSC right ascension (J2000)
26- 27 I2 min RAm RASSBSC right ascension (J2000)
29- 32 F4.1 s RAs RASSBSC right ascension (J2000)
34 A1 --- DE- RASSBSC declination sign (J2000)
35- 36 I2 deg DEd RASSBSC declination sign (J2000)
38- 39 I2 arcmin DEm RASSBSC declination sign (J2000)
41- 42 I2 arcsec DEs RASSBSC declination sign (J2000)
45- 46 I2 h RA1h NVSS right ascension (J2000)
48- 49 I2 min RA1m NVSS right ascension (J2000)
51- 54 F4.1 s RA1s NVSS right ascension (J2000)
56 A1 --- DE1- NVSS declination sign (J2000)
57- 58 I2 deg DE1d NVSS declination sign (J2000)
60- 61 I2 arcmin DE1m NVSS declination sign (J2000)
63- 66 F4.1 arcsec DE1s NVSS declination sign (J2000)
69- 70 I2 h RA2h Optical right ascension (J2000)
72- 73 I2 min RA2m Optical right ascension (J2000)
75- 78 F4.1 s RA2s Optical right ascension (J2000)
80 A1 --- DE2- Optical declination sign (J2000)
81- 82 I2 deg DE2d Optical declination sign (J2000)
84- 85 I2 arcmin DE2m Optical declination sign (J2000)
87- 90 F4.1 arcsec DE2s Optical declination sign (J2000)
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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- 21 A21 --- Name IAU name (SHBL JHHMMSS.s+DDMMSS)
22 A1 --- n_Name [d] d: Sources already classified in literature
as BL Lacs (see Paper II, Cat. J/A+A/434/385)
24- 31 E8.3 mW/m2 FX X-ray flux in 0.1-2.4keV band
33- 36 F4.1 mJy F20cm Radio flux at 20cm (1.4GHz)
38- 41 F4.1 mag Vmag Optical apparent V magnitude (from APM and COSMOS)
43- 47 F5.3 --- z ?=- Redshift
48 A1 --- u_z [?] Uncertain redshifts flag
50- 53 F4.2 --- alpha ?=- alphaOIIOIII index
54 A1 --- u_alpha [?] Impossible measure flag, [OII]3727 located
in noise
55- 59 F5.3 --- CaH+K ?=- CaH+K break (1)
60 A1 --- u_CaH+K [?] CaH+K break located in noise
61- 65 F5.3 --- e_CaH+K ? CaH+K break
67- 68 I2 --- S/N Signal-to-noise ration
70 A1 --- l_EW Limit flag on EW
71- 74 F4.1 0.1nm EW 2σ upper limit of observed equivalent widths
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Note (1): We consider the Ca H&K break to have reached its minimum value
of zero when the flux blue-ward of this feature is equal to or larger
than the one red-ward.
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1 A1 --- f_Name [sl] our (s)ample or (l)iterature
3- 23 A21 --- Name IAU name (SHBL JHHMMSS.s+DDMMSS)
24 A1 --- n_Name [a-e] Note on Name (1)
26- 29 F4.1 mag Vmag Optical apparent V magnitude (from APM and COSMOS)
31- 35 F5.3 --- z ?=- Lower limit of redshift
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Note (1): Notes as follows:
a = Low quality spectrum
b = no published spectrum, Nass et al. (1996A&A...309..419N 1996A&A...309..419N)
c = no published spectrum, Londish et al. (2002MNRAS.334..941L 2002MNRAS.334..941L)
d = no spectrum, Schwope et al. (2000, Cat. J/AN/321/1)
e = no spectrum, Bauer et al. (2000, Cat. J/ApJS/129/547)
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History:
From electronic version of the journal
References:
Giommi et al., Paper I 1999MNRAS.310..465G 1999MNRAS.310..465G
(End) Patricia Vannier [CDS] 16-Oct-2007