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VizieR

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phase: 3

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J/AJ/104/28/table3

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Distance ρ
Position angle θ
Distance (x,y)
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J2000
B1950
Ecl. J2000

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IAU/CDS nomenclature

Mirrors

	J/AJ/104/28	763		JHKL photometry of BL Lac Objects (Bersanelli+ 1992) ReadMe+ftp 1992AJ....104...28B Similar Catalogs Post annotation
1.	J/AJ/104/28/table3		Spectral indices (42 rows) metaJ/AJ/104/28/table3

Simple Constraint List Of Constraints

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Constraint

Explain (UCD)

recno

Record number assigned by the VizieR team. Should Not be used for identification.

Name

(char)

⁽ⁱ⁾ BL Lac name

Note

(char)

Notes (Note 1)

Sp-Index

⁽ⁿ⁾ spectral index (F proportional (nu)**(-a)

Nobs

Number of observations

amin

⁽ⁿ⁾ Minimal value of spectral index

e_amin

⁽ⁿ⁾ mean error on amin

amax

⁽ⁿ⁾ Maximal value of spectral index

e_amax

⁽ⁿ⁾ mean error on amax

pcGal

⁽ⁿ⁾ Fractional estimated flux contribution of the host galaxy to the observed spectrum.

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

⁽ⁱ⁾indexed column

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	Display UCD1+ UCD1

https://cdsannotations.u-strasbg.fr/annotations/vizierTable//

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Contact - Legals

If the access to catalogues with VizieR was helpful for your research work,the following acknowledgment would be appreciated: This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France (DOI: 10.26093/cds/vizier). The original description of the VizieR service was published in A&AS 143, 23