Access to Astronomical Catalogues

J/MNRAS/390/59      X-ray sources in NGC 5775                (Li+, 2008)
Chandra observation of the edge-on spiral NGC 5775:
probing the hot galactic disc/halo connection.
    Li J.-T., Li Z., Wang Q.D., Irwin J.A., Rossa J.
   <Mon. Not. R. Astron. Soc., 390, 59-70 (2008)>
   =2008MNRAS.390...59L
ADC_Keywords: X-ray sources

Keywords: galaxies: general - galaxies: individual: NGC 5775 -
          galaxies: spiral - X-rays: general

Abstract:
    We study the edge-on galaxy NGC 5775, utilizing a 58.2ks Chandra
    ACIS-S observation together with complementary Hubble Space Telescope
    (HST) ACS, Spitzer IRAC and other multi-wavelength data sets. This
    edge-on galaxy, with its disc-wide active star formation, is
    particularly well suited for studying the disc/halo interaction on
    subgalactic scales. We detect 27 discrete X-ray sources within the
    D25 region of the galaxy, including an ultra-luminous source with a
    0.3-7keV luminosity of ∼7x1040erg/s.

Description:
    The archival Chandra observation of NGC 5775 (Obs. ID. 2940) was taken
    on April 5, 2002, with a total effective exposure of 58.2ks.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table2.dat        68       99   Chandra Source List


See also:
   J/ApJ/574/258 : X-ray-emitting young stars in Orion nebula (Feigelson+, 2002)


Byte-by-byte Description of file: table2.dat

   Bytes Format Units  Label        Explanations

   1-  2  I2    ---    [LLW2008]    Source sequential number
   4- 22  A19   ---    CXOU         CXOU Name (JHHMMSS.ss+DDMMSS.s)
  24- 26  F3.1  arcsec e_Pos        Position uncertainty (1)
  28- 32  F5.2  ct/ks  CR           On-axis source broad-band count rate
  34- 37  F4.2  ct/ks  e_CR         rms uncertainty on CR
  39- 43  F5.2  ---    HR           ? Hardness ratio, HR=(H-S2)/(H+S2) (2)
  45- 48  F4.2  ---    e_HR         ? rms uncertainty on HR
  51- 55  F5.2  ---    HR1          ? Hardness ratio 1, HR1=(S2-S1)/S (2)
  57- 60  F4.2  ---    e_HR1        ? rms uncertainty on HR1
  62- 68  A7    ---    Det          [BSH, ] Bands in which the source is
                                            detected (3)

Note (1): Position uncertainty calculated from the maximum likelihood
     centroiding and an approximate off-axis angle (r) dependent systematic
     error 0.2+1.4(r/8arcmin)2arcsec (an approximation to fig. 4 of
     Feigelson et al., 2002, Cat. J/ApJ/574/258), which are added in
     quadrature.
Note (2): Listed only for values with uncertainties less than 0.2. Bands
     are S1=0.3-0.7keV, S2=0.7-1.5keV, H1=1.5-3keV and H2=3-7keV.
Note (3): The label 'B' (broad-band), 'S' (soft) or 'H' (hard) mark the
     band in which a source is detected with the most accurate position
     that is adopted in Column CXOU


History:
    From electronic version of the journal
(End)                                      Patricia Vannier [CDS]    18-Oct-2008