J/A+A/398/479 Local galaxy flows within 5 Mpc (Karachentsev+, 2003)
Local galaxy flows within 5 Mpc.
Karachentsev I.D., Makarov D.I., Sharina M.E., Dolphin A.E., Grebel E.K.,
Geisler D., Guhathakurta P., Hodge P.W., Karachentseva V.E., Sarajedini A.,
Seitzer P.
<Astron. Astrophys. 398, 479 (2003)>
=2003A&A...398..479K 2003A&A...398..479K
ADC_Keywords: Galaxies, nearby ; Radial velocities ; Morphology
Keywords: galaxies: dwarf - galaxies: distances and redshifts -
galaxies: kinematics and dynamics
Abstract:
We present Hubble Space Telescope/WFPC2 images of sixteen dwarf
galaxies as part of our snapshot survey of nearby galaxy candidates.
We derive their distances from the luminosity of the tip of the red
giant branch stars with a typical accuracy of ∼12%.
Description:
Images of sixteen galaxies were obtained with the Wide Field and
Planetary Camera (WFPC2) aboard the Hubble Space Telescope (HST)
between October 22, 1999 and July 26, 2001 as part of our HST snapshot
survey of nearby galaxy candidates (Seitzer et al., 1999, BAAS, 31,
1380; Grebel et al. 2000, ASP Conf. Ser. 221, 147). The galaxies were
observed with 600-second exposures taken in the F606W and F814W
filters for each object.
For photometric measurements we used the HSTphot stellar photometry
package developed by Dolphin (2000PASP..112.1383D 2000PASP..112.1383D).
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 91 16 New distances to nearby field galaxies
table2.dat 123 156 Current census of the Local Volume galaxies
with 1.0<D<5.5Mpc.
notes.dat 80 19 Individual notes to table2.dat
--------------------------------------------------------------------------------
See also:
J/ApJS/80/479 : Nearby galaxy flows (Tully+, 1992)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Name Galaxy name
10- 11 I2 h RAh Galaxy center Right ascension (1950)
12- 13 I2 min RAm Galaxy center Right ascension (1950)
14- 17 F4.1 s RAs Galaxy center Right ascension (1950)
18 A1 --- DE- Galaxy center Declination sign (1950)
19- 20 I2 deg DEd Galaxy center Declination (1950)
21- 22 I2 arcmin DEm Galaxy center Declination (1950)
23- 24 I2 arcsec DEs Galaxy center Declination (1950)
26- 30 F5.2 mag Btmag Apparent integrated magnitude (from NED)
32- 34 F3.1 arcmin aaxis Angular dimension (from NED)
35 A1 --- --- [x]
36- 38 F3.1 arcmin baxis Angular dimension (from NED)
40- 42 I3 km/s RVLG ? Radial velocity with respect to the Local
Group centroid (Karachentsev & Makarov,
1996AJ....111..794K 1996AJ....111..794K) (1)
44- 45 I2 --- TType Morphological type in de Vaucouleurs' notation
47- 51 F5.2 mag ITRGB Position of the tip of red giant branch (2)
53- 56 F4.2 mag e_ITRGB rms uncertainty on ITRBG
58- 61 F4.2 mag AI Galactic extinction in the I-band
(Schlegel et al., 1998ApJ...500..525S 1998ApJ...500..525S)
63- 67 F5.2 mag (m-M)0 True distance modulus (3)
69- 72 F4.2 mag e_(m-M)0 rms uncertainty on (m-M)0
74- 77 F4.2 Mpc Dist Linear distance
79- 82 F4.2 Mpc e_Dist rms uncertainty on Dist
84- 91 A8 --- OName Other name
--------------------------------------------------------------------------------
Note (1): Here we used new accurate velocities measured by
Huchtmeier et al. (2003, A&A, submitted) for some galaxies;
Note (2): Position of the tip of red giant branch (TRGB) and its uncertainty as
derived with the Sobel filter
Note (3): True distance modulus with its uncertainty, which takes into
account the uncertainty in the TRGB, as well as uncertainties of
the HST photometry zero point (∼0.05mag), the aperture corrections
(∼0.05mag), and the crowding effects (∼0.06mag) added quadratically;
the uncertainties in the extinction and reddening are taken to be 10%
of their values from Schlegel et al. (1998ApJ...500..525S 1998ApJ...500..525S); (for more
details on the total budget of internal and external systematic errors
for the TRGB method see Mendez et al., 2002AJ....124..213M 2002AJ....124..213M)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Name Galaxy name
10- 11 I2 h RAh Right ascension (B1950)
12- 13 I2 min RAm Right ascension (B1950)
14- 17 F4.1 s RAs Right ascension (B1950)
18 A1 --- DE- Declination sign (B1950)
19- 20 I2 deg DEd Declination (B1950)
21- 22 I2 arcmin DEm Declination (B1950)
23- 24 I2 arcsec DEs Declination (B1950)
26- 30 F5.2 mag Btmag Apparent integrated blue magnitude (from NED)
31 A1 --- u_Btmag Uncertainty flag on Bt
33- 36 F4.2 mag Ab Galactic extinction from Schlegel et al.
(1998ApJ...500..525S 1998ApJ...500..525S)
38- 41 I4 km/s HRV Heliocentric radial velocity from NED or
recent measurements by Huchtmeier et al.
(2003, A&A, submitted)
43- 45 I3 km/s RVLG Radial velocity in the frame of the Local Group
47- 50 F4.2 Mpc Dist Galaxy distance
51 A1 --- u_Dist Uncertainty flag on Dist
53- 55 A3 --- n_Dist Used method to determine the distance (1)
56 A1 --- Note [*] indicates a note in notes.dat file
58-123 A66 --- r_Dist Reference for the distance
--------------------------------------------------------------------------------
Note (1): Method used to determine the distance as follows:
cep = Cepheids
rgb = tip of the red giant branch stars
sbf = surface brightness fluctuations
mem = membership of known nearby groups
bs = luminosity of the brightest stars
tf = Tully-Fisher relation
SN = supernova
--------------------------------------------------------------------------------
Byte-by-byte Description of file: notes.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Name Galaxy name
10- 80 A71 --- Note Text of the note
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 26-Mar-2003