J/A+A/683/L5 FITS images of 3C 273 host galaxy (Ren+, 2024)
3C273 host galaxy with Hubble Space Telescope coronagraphy.
Ren B.B., Fogarty K., Debes J.H., Meyer E.T., Mo Y., Mawet D., Perrin M.D.,
Ogle P.M., Sahlmann J.
<Astron. Astrophys. 683, L5 (2024)>
=2024A&A...683L...5R 2024A&A...683L...5R (SIMBAD/NED BibCode)
ADC_Keywords: Active gal. nuclei ; Galaxies, optical
Keywords: quasars: individual: 3C273 - methods: observational -
instrumentation: high angular resolution
Abstract:
The close-in regions of bright quasars' host galaxies have been
difficult to image due to the overwhelming light from the quasars.
With coronagraphic observations in visible light using the Space
Telescope Imaging Spectrograph (STIS) on the Hubble Space Telescope,
we removed 3C 273 quasar light using color-matching reference stars.
The observations revealed the host galaxy from 60" to 0.2" with nearly
full angular coverage. Isophote modeling revealed a new core jet, a
core blob, and multiple smaller-scale blobs within 2.5". The blobs
could potentially be satellite galaxies or infalling materials towards
the central quasar. Using archival STIS data, we constrained the
apparent motion of its large scale jets over a 22 yr timeline. By
resolving the 3C 273 host galaxy with STIS, our study validates the
coronagraph usage on extragalactic sources in obtaining new insights
into the central ∼kpc regions of quasar hosts.
Description:
FITS files of 3C 273 host galaxy in HST/STIS coronagraphic
observations.
The stars are located at the mathematical centers of the arrays.
Objects:
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RA (2000) DE Designation(s)
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12 29 06.70 +02 03 08.6 3C 273 = QSO J1229+0203
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 120 4 List of fits files
fits/* . 4 Individual fits files
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 9 F9.5 deg RAdeg Right Ascension of center (J2000)
10- 18 F9.5 deg DEdeg Declination of center (J2000)
20- 25 F6.4 arcsec/pix scale ? Scale of the image
27- 30 I4 --- Nx Number of pixels along X-axis
32- 35 I4 --- Ny Number of pixels along Y-axis
37- 41 I5 Kibyte size Size of FITS file
43- 57 A15 --- FileName Name of FITS file, in subdirectory fits
59-120 A62 --- Title Title of the FITS file
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Acknowledgements:
Bin Ren, bin.ren(at)oca.eu
(End) Patricia Vannier [CDS] 16-Feb-2024