2001A&A...369...57S


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.28CET06:55:50

2001A&A...369...57S - Astronomy and Astrophysics, volume 369, 57-64 (2001/4-1)

Monitoring of the optical and 2.5-11.7 µm spectrum and mid-IR imaging of the Seyfert 1 galaxy Mrk 279 with ISO.

SANTOS-LLEO M., CLAVEL J., SCHULZ B., ALTIERI B., BARR P., ALLOIN D., BERLIND P., BERTRAM R., CRENSHAW D.M., EDELSON R.A., GIVEON U., HORNE K., HUCHRA J.P., KASPI S., KRISS G.A., KROLIK J.H., MALKAN M.A., MALKOV Y.F., NETZER H., O'BRIEN P.T., PETERSON B.M., POGGE R.W., PRONIK V.I., QIAN B.-C., REICHERT G.A., RODRIGUEZ-PASCUAL P.M., SERGEEV S.G., TAO J., TOKARZ S., WAGNER R.M., WAMSTEKER W. and WILKES B.J.

Abstract (from CDS):

Mid-infrared images of the Seyfert 1 galaxy Mrk 279 obtained with the ISO satellite are presented together with the results of a one-year monitoring campaign of the 2.5-11.7µm spectrum. Contemporaneous optical photometric and spectrophotometric observations are also presented. The galaxy appears as a point-like source at the resolution of the ISOCAM instrument (4-5"). The 2.5-11.7µm average spectrum of the nucleus in Mrk 279 shows a strong power law continuum with α=-0.80±0.05 (Fν∝να) and weak PAH emission features. The Mrk 279 spectral energy distribution shows a mid-IR bump, which extends from 2 to 15-20µm. The mid-IR bump is consistent with thermal emission from dust grains at a distance of >100lt-d. No significant variations of the mid-IR flux have been detected during our observing campaign, consistent with the relatively low amplitude (∼10% rms) of the optical variability during the campaign. The time delay for Hβ line emission in response to the optical continuum variations is τ=16.7+5.3–5.6days, consistent with previous measurements.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: individual: Mrk 279 - galaxies: nuclei - galaxies: Seyfert - infrared: galaxies

VizieR on-line data: <Available at CDS (J/A+A/369/57): table4.dat table5.dat tables.ps tables.tex>

Simbad objects: 5

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Number of rows : 5

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 1566 Sy1 04 20 00.4020009055 -54 56 16.578104141 10.29 10.19 9.73 9.21 10.1 ~ 728 2
2 NGC 3783 Sy1 11 39 01.7095761008 -37 44 19.008597647   12.46 13.43 11.33 12.1 ~ 1492 0
3 APG 294 GrG 11 39.7 +31 55           ~ 260 0
4 NGC 3786 GiP 11 39 42.5135441867 +31 54 33.955263276   14.62 13.74     ~ 360 1
5 Mrk 279 Sy1 13 53 03.4356451470 +69 18 29.410672989   15.15 14.46     ~ 697 0

    Equat.    Gal    SGal    Ecl

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2020.10.28-06:55:50

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