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REPORTS FROM L.A. SARGSYAN AND COLLEAGUES ADVANCE KNOWLEDGE IN ASTROPHYSICS
Science Letter
November 3, 2009
According to recent research from Armenia, "Optical classifications are
provided for 18 infrared objects whose spectra have been obtained with
the Spitzer space telescope. An attempt is made at classification in
terms of the spectral energy distributions (SED) based on photometric
data from the SDSS and 2MASS (11 objects, 4 of which also have SDSS
spectra) archives. 7 of the objects are classified using the SDSS
spectra, and other sources are used for 5 of the objects, 4 of which
cannot even be classified using spectral or photometric data."
"For 3 of the objects, the classifications according to photometric
data and the SDSS spectra are the same, so it is to be hoped that
the proposed classification can be used for classifying many objects
when only photometric data are available. These objects have also
been classified according to their IR spectra. The IR and optical
classifications are mostly in agreement when they are compared,"
wrote L.A. Sargsyan and colleagues (see also Astrophysics).
The researchers concluded: "Morphological descriptions of the objects
are also given."
Sargsyan and colleagues published their study in Astrophysics
(Optical classification of 18 infrared galaxies. Astrophysics,
2009;52(3):377-382).
For additional information, contact L.A. Sargsyan, VA Ambartsumian
Byurakan Astrophysics Observ, Byurakan, Armenia.
Publisher contact information for the journal Astrophysics is:
Springer, Plenum Publishers, 233 Spring St., New York, NY 10013, USA.
Science Letter
November 3, 2009
According to recent research from Armenia, "Optical classifications are
provided for 18 infrared objects whose spectra have been obtained with
the Spitzer space telescope. An attempt is made at classification in
terms of the spectral energy distributions (SED) based on photometric
data from the SDSS and 2MASS (11 objects, 4 of which also have SDSS
spectra) archives. 7 of the objects are classified using the SDSS
spectra, and other sources are used for 5 of the objects, 4 of which
cannot even be classified using spectral or photometric data."
"For 3 of the objects, the classifications according to photometric
data and the SDSS spectra are the same, so it is to be hoped that
the proposed classification can be used for classifying many objects
when only photometric data are available. These objects have also
been classified according to their IR spectra. The IR and optical
classifications are mostly in agreement when they are compared,"
wrote L.A. Sargsyan and colleagues (see also Astrophysics).
The researchers concluded: "Morphological descriptions of the objects
are also given."
Sargsyan and colleagues published their study in Astrophysics
(Optical classification of 18 infrared galaxies. Astrophysics,
2009;52(3):377-382).
For additional information, contact L.A. Sargsyan, VA Ambartsumian
Byurakan Astrophysics Observ, Byurakan, Armenia.
Publisher contact information for the journal Astrophysics is:
Springer, Plenum Publishers, 233 Spring St., New York, NY 10013, USA.