J/MNRAS/402/1005 Stellar cluster dynamical masses in NGC3310 (Hagele+, 2010)
The circumnuclear environment of the peculiar galaxy NGC3310.
Hagele G.F., Diaz A.I., Cardaci M.V., Terlevich E., Terlevich R.
<Mon. Not. R. Astron. Soc., 402, 1005-1026 (2010)>
=2010MNRAS.402.1005H 2010MNRAS.402.1005H
ADC_Keywords: Galaxies, nearby ; Associations, stellar ; Stars, masses
Keywords: H II regions - galaxies: individual: NGC 3310 -
galaxies: kinematics and dynamics - galaxies: starburst -
galaxies: star clusters
Abstract:
Gas and star velocity dispersions have been derived for eight
circumnuclear star-forming regions (CNSFRs) and the nucleus of the
spiral galaxy NGC 3310 using high-resolution spectroscopy in the blue
and far red. Stellar velocity dispersions have been obtained from the
CaII triplet in the near-IR, using cross-correlation techniques,
while gas velocity dispersions have been measured by Gaussian fits to
the Hβ λ4861Å and [OIII] λ5007Å emission
lines.
Description:
The data were acquired in 2000 February using the two arms of the
Intermediate dispersion Spectrograph and Imaging System (ISIS)
attached to the 4.2-m William Herschel Telescope (WHT) of the Isaac
Newton Group (ING) at the Roque de los Muchachos Observatory on the
Spanish island of La Palma.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 47 113 Positions, radii and peak intensities of NGC 3310
regions derived from the HST-F606W image
table5.dat 26 152 Upper limits to the dynamical masses
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See also:
J/MNRAS/396/2295 : Stellar cluster dynamical masses in NGC2903 (Hagele+, 2009)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Region (RNNa) and galaxy nucleus (Na) name,
<[HDC2010] RNNa> in Simbad
9- 10 I2 h RAh Right ascension (J2000)
12- 13 I2 min RAm Right ascension (J2000)
15- 20 F6.3 s RAs Right ascension (J2000)
22 A1 --- DE- Declination sign (J2000)
23- 24 I2 deg DEd Declination (J2000)
26- 27 I2 arcmin DEm Declination (J2000)
29- 33 F5.2 arcsec DEs Declination (J2000)
35- 38 F4.1 pc Rad Radius of the circular region
40- 42 F3.1 pc e_Rad rms uncertainty on Rad
44- 47 I4 ct I Peak intensity, as measured from the F606W image
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Region (RNNa) and galaxy nucleus (Na) name
9- 11 A3 --- n_Name Note (1)
13- 14 A2 --- Slit [S1 S2] Slit name
16- 19 I4 10+5Msun Mass Stellar mass
20 A1 --- u_Mass Uncertainty flag on Mass
22- 23 I2 10+5Msun e_Mass ? rms uncertainty on Mass
25- 26 I2 % Error ? Fractional error on Mass
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Note (1): For the regions that have been observed in more than one slit
position, we list the derived values using the two separate stellar
velocity dispersions. The dynamical masses in the rows labelled 'sum'
have been found by adding the individual masses in a given CNSFR:
R12, R4, R6, R7, R10 and R45 (for R4 and R5), as well as the galaxy
nucleus, N.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 07-Dec-2010