J/AJ/133/1947 37GHz observations of BL Lac objects (Nieppola+, 2007)
37 GHz observations of a large sample of BL Lacertae objects.
Nieppola E., Tornikoski M., Lahteenmaki A., Valtaoja E., Hakala T.,
Hovatta T., Kotiranta M., Nummila S., Ojala T., Parviainen M., Ranta M.,
Saloranta P.-M., Torniainen I., Troller M.
<Astron. J., 133, 1947-1953 (2007)>
=2007AJ....133.1947N 2007AJ....133.1947N
ADC_Keywords: Active gal. nuclei ; BL Lac objects ; Radio continuum
Keywords: Galaxies: active - BL Lacertae objects: general -
Radio continuum: galaxies
Description:
We present 37GHz data obtained at Metsahovi Radio Observatory in
2001 December-2005 April for a large sample of BL Lacertae objects.
Metsahovi radio telescope is a radome enclosed antenna with a
diameter of 13.7 metres. The 37 GHz receiver is a dual horn,
Dicke-switched receiver with a HEMT preamplifier, and is operated at
room temperature. The observations are ON-ON observations,
alternating the source and the sky in each feed horn. A typical
integration time to obtain one flux density data point is
1200-1600s, and the detection limit under optimal weather conditions
is about 0.2Jy.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 46 398 The Metsahovi BL Lac sample
table2.dat 58 3009 37 GHz flux densities for sample sources
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See also:
J/AJ/104/28 : JHKL photometry of BL Lac Objects (Bersanelli+ 1992)
J/A+AS/98/393 : 1Jy BL Lac Objects: Observational Data (Stickel+ 1993)
J/A+AS/109/267 : Radio to X-Ray distrib. of BL Lac Objects (Giommi+ 1995)
J/A+A/401/927 : The HRX-BL Lac sample (Beckmann+, 2003)
J/AJ/129/2542 : BL Lac from SDSS (Collinge+, 2005)
J/other/NewA/11.27 : 2MASS observation of BL Lac objects (Chen+, 2005)
J/other/NewA/11.557 : Infrared photometry of BL Lac objects (Chen+, 2006)
J/A+A/434/385 : High energy peaked BL Lacs X-ray/radio data (Giommi+ 2005)
J/A+A/445/441 : SED of BL Lacertae objects (Nieppola+, 2006)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 18 A18 -- Name Source name
20- 21 I2 h RAh Hour of Right ascension (J2000)
23- 24 I2 min RAm Minute of Right ascension (J2000)
26- 30 F5.2 s RAs Second of Right ascension (J2000)
32 A1 -- DE- Sign of the Declination (J2000)
33- 34 I2 deg DEd Degree of Declination (J2000)
36- 37 I2 arcmin DEm Arcminute of Declination (J2000)
39- 42 F4.1 arcsec DEs Arcsecond of Declination (J2000)
44- 46 A3 -- Class Subclassification (1)
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Note (1): Subclassification as follows:
LBL = Low-energy peak BL Lac
IBL = Intermediate BL Lac
HBL = High-energy peak BL Lac as determined in Nieppola et al., 2006,
Cat. J/A+A/445/441
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 18 A18 -- Name Source name
20- 29 A10 "YYYY/MM/DD" Obs.Date Date of the observation
31- 32 I2 h Obs.h UTC hour of the observation
34- 35 I2 min Obs.m UTC minute of the observation
37- 47 F11.3 d JD Julian date of the observation
49 A1 -- l_Flux [<] denotes a S/N>4 upper limit.
50- 53 F4.2 Jy Flux Flux density at 37GHz
55- 58 F4.2 Jy e_Flux ? Error estimate in Flux
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Acknowledgements:
Elina Nieppola, eni(at)kurp.hut.fi
(End) Patricia Vannier [CDS] 29-Jun-2007