VLT Optical Spectroscopy of BL Lac Objects

Bibcode
2005gbha.conf..140S
DOI
10.1007/11403913_23
Sbarufatti, B.; Treves, A.; Falomo, R.; Heidt, J.; Kotilainen, J.; Scarpa, R.
Bibliographical reference

In: Growing black holes: accretion in a cosmological context. Proceedings of the MPA/ESO/MPE/USM Joint Astronomy Conference held at Garching, Germany, 21-25 June 2004. A. Merloni, S. Nayakshin, R. A. Sunyaev (Eds.). ESO astrophysics symposia. Berlin: Springer, ISBN 3-540-25275-4, ISBN 978-3-540-25275-7, 2005, p. 140 - 141

Advertised on:
0
2005
Number of authors
6
IAC number of authors
0
Citations
0
Refereed citations
0
Description
We report here the first results of a program aimed at obtaining high signal to noise (up to ~ 500) optical spectroscopy of a large sample of BL Lac objects using ESO VLT+FORS1. New spectroscopic observations have been obtained for 31 objects, which allows us to obtain new redshift for 13 targets and provide better classification for others. In a number of cases no lines are detected and lower limits to the redshift can be estimated.
Type
Non-refereed
BL Lacertae objects
Spectroscopy

It may interest you

  • Non-refereed
    NIRPS near-infrared spectrograph: AITV phase at ESO3.6m/La Silla
    NIRPS is a fiber-fed AO nIR spectrograph working simultaneously with HARPS at the La Silla-ESO 3.6m telescope. The cryogenic spectrograph operating at 75K employs a cross-dispersed echelle grating (R4), covering a wavelength range of 0.98-1.80 microns in a single image using a Teledyne Hawaii-4RG infrared detector. In early 2022, the NIRPS
    Malo, Lison et al.

    Advertised on:

    7
    2024
    Bibcode
    2024SPIE13096E..46M
    Citations
    0
  • Non-refereed
    Transport, handling, and integration of the adaptive optics system for GTC: from the laboratory to the telescope
    The Gran Telescopio de Canarias Adaptive Optics System (GTCAO) is currently in its commissioning phase at Roque de Los Muchachos Observatory (ORM). The GTCAO is a single-conjugated post-focal system equipped with a Shack- Hartmann Wavefront Sensor (WFS) and a Deformable Mirror (DM) conjugated to the pupil, achieving a Strehl Ratio of 65% in the K
    González Carretero, Eduardo D. et al.

    Advertised on:

    7
    2024
    Bibcode
    2024SPIE13096E..96G
    Citations
    0
  • Non-refereed
    Euclid commissioning results: the near infrared spectrometer and photometer (NISP) signal detection chain
    Euclid, the M2 mission of the ESA's Cosmic Vision 2015-2025 program, aims to explore the Dark Universe by conducting a survey of approximately 14 000 deg 2 and creating a 3D map of the observable Universe of around 1.5 billion galaxies up to redshift z ∼ 2. This mission uses two main cosmological probes: weak gravitational lensing and galaxy
    Cogato, F. et al.

    Advertised on:

    8
    2024
    Bibcode
    2024SPIE13092E..3GC
    Citations
    0