XTE J1752-223: back to optical quiescence

Bibcode
2010ATel.2818....1C
Corral-Santana, J. M.; Rodríguez-Gil, P.; Guerra, J. C.; Casares, J.
Bibliographical reference

The Astronomer's Telegram, #2818

Advertised on:
8
2010
Number of authors
4
IAC number of authors
0
Citations
2
Refereed citations
2
Description
We observed the black hole candidate XTE J1752-223 (ATel #2258) with the William Herschel Telescope (WHT) and the ACAM imager/spectrograph at the Observatorio del Roque de los Muchachos, La Palma, Spain. 200-s exposures were taken in the R and I bands under photometric conditions and 0.6-0.7-arcsec seeing on Aug 24.887 and Aug 24.893, respectively. The object has dropped substantially since the optical re-brightening reported in ATel #2805.
Type
Non-refereed
Black holes

It may interest you

  • Non-refereed
    MAAT: an IFU for GTC optimized using spectrograph wavefront measurements and superoptimization
    The Mirror-slicer Array for Astronomical Transients (MAAT) is an IFU now being manufactured for the OSIRIS spectrograph on the 10.4-m GRANTECAN (GTC) telescope at La Palma. It is based on the Advanced Image Slicer (AIS) concept as are MUSE and KMOS on the VLT (among many others). Very significant changes to the design had to be made due in part to
    Content, Robert et al.

    Advertised on:

    7
    2024
    Bibcode
    2024SPIE13096E..95C
    Citations
    0
  • Non-refereed
    JWST observations of Chiron: A unique active Centaur beyond 18 AU
    Chiron is the second-largest Centaur, with an effective diameter of 210 km, and is among the most well-studied minor bodies in the middle and outer Solar System. Notably, Chiron belongs to the enigmatic subpopulation of active Centaurs and has displayed cometary activity several times since its discovery. In March 2021, Chiron underwent an outburst
    Wong, Ian et al.

    Advertised on:

    10
    2024
    Bibcode
    2024DPS....5640507W
    Citations
    0
  • Non-refereed
    FRIDA: diffraction-limited imaging and integral-field spectroscopy for the GTC
    FRIDA is a diffraction-limited imager and integral-field spectrograph for the adaptive-optics focus of the Gran Telescopio Canarias. In imaging mode FRIDA provides scales of 10, 20 and 40 mas/pixel and in IFS mode spectral resolutions of about 1200, 4000 and 30,000. Coronographic masks are available in both modes for highcontrast images. FRIDA is
    Watson, Alan M. et al.

    Advertised on:

    7
    2024
    Bibcode
    2024SPIE13096E..1YW
    Citations
    0