The redshift of the X-ray selected BL Lacertae object H0414 + 009

Details The redshift of the X-ray selected BL Lacertae object H0414 + 009 The redshift of the X-ray selected BL Lacertae object H0414 + 009

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....101..818h&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 101, March 1991, p. 818-820.

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17

Bl Lacertae Objects, Red Shift, Spectrum Analysis, X Ray Spectra, Elliptical Galaxies, Interstellar Extinction, Stellar Luminosity, Visible Spectrum

Scientific paper

The X-ray selected BL Lac object H0414 + 009 has a redshift of 0.287; the optical spectrum is well described by the sum of a standard elliptical galaxy plus a relatively flat power law. The galaxy contributes about 40 percent of the light in the spectrum in the rest-frame V band, and is one of the most luminous galaxies known. The properties of H0414 + 009 are similar in all respects to a previously studied object, 1E 1415 + 259 at z = 0.237. If X-ray selected BL Lacs continue to be found in such bright galaxies, then the properties of studying their luminosity function and evolution are considerably enhanced. There is also possible evidence for intrinsic X-ray absorption by a warm medium, as has been found in several other BL Lacs.

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