==========================================================================
J/other/RAA/18.140 Planetary nebulae in circumnuclear region of M31 (Li+, 2018)
The following files can be converted to FITS (extension .fit or fit.gz)
table2.dat table3.dat
==========================================================================
Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/other/RAA/18.140
==========================================================================
drwxr-xr-x 91 cats archive 4096 Apr 16 16:21 [Up]
drwxr-xr-x 3 cats archive 295 Jan 13 2023 [TAR file]
-rw-r--r-- 1 cats archive 484 Dec 19 2022 .message
-r--r--r-- 1 cats archive 9136 Oct 2 2019 ReadMe
-rw-r--r-- 1 cats archive 1007 Oct 2 2019 +footg5.gif
-rw-r--r-- 1 cats archive 2539 Oct 2 2019 +footg8.gif
-r--r--r-- 1 cats archive 33499 Aug 6 2019 table2.dat [txt] [txt.gz] [fits] [fits.gz] [html]
-r--r--r-- 1 cats archive 10692 Aug 6 2019 table3.dat [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe :J/other/RAA/18.140 Planetary nebulae in circumnuclear region of M31 (Li+, 2018)
================================================================================
Planetary nebulae in the circumnuclear region of M31: a spectroscopic sample.
Li A.-Q., Li Z.-Y., Dong H., Fang X., Xu X.-J.
<Res. Astron. Astrophys., 18, 140 (2018)>
=2018RAA....18..140L (SIMBAD/NED BibCode)
================================================================================
ADC_Keywords: Galaxies, nearby ; Planetary nebulae ; Spectroscopy
Keywords: planetary nebulae: general - galaxies: individual (M31)
Abstract:
Planetary nebulae (PNe) are an important tool for studying the
dynamics and chemical evolution of galaxies in the Local Universe,
given their characteristic bright emission line spectra. The Andromeda
Galaxy (M31) provides a unique laboratory for studying PNe in the
circumnuclear region, thanks to its proximity and almost uniformly low
line-of-sight extinction that ensures observations with high
resolution and sensitivity. Using the WIYN/Hydra multi-fiber
spectrograph, we have obtained optical (4119-6882AA) spectra of 77
PN candidates selected from Hubble Space Telescope narrow-band
imaging, which are located within the central 500 pc region of M31.
Among these candidates, 49 (64%) are spectroscopically observed for
the first time. The spectra of 300 previously known PNe and HII
regions, which primarily reside in the disk, are also taken for
comparison. All 77 circumnuclear PN candidates exhibit prominent
emission lines, including [OIII] lambda5007, [NII] lambda6583,
Halpha and Hbeta, strongly suggesting that they are genuine PNe.
We measured the line fluxes, radial velocities and line widths for all
objects, and found that the radial velocities of the circumnuclear PNe
generally trace rotation of the inner bulge. We also estimated a
dynamical mass of 6.4+/-0.5x10^9^M_sun_ enclosed within an
effective galactocentric radius of 340 pc, which is compatible with
the previously estimated total stellar mass in this region.
Description:
On 2014 October 3 and 2016 September 30, we observed the targets using
the multi-object spectrograph, Hydra, on the 3.5m WIYN telescope at
Kitt Peak. The focal plane of Hydra corresponds to a circle of
1deg-diameter on the sky, which, at the time of the observations,
could accommodate up to 90 fibers in a single field. The observations
used the red fibers of 2''-diameter, which feed the Bench spectrograph
with the 600 lines/mm grating. The wavelength coverage was
4119AA-6882AA, with an FWHM resolution of 3.35AA.