A close look at the Centaurus A group of galaxies - III. Recent star formation histories of late-type dwarfs around M 83

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Volume 530 (June 2011)

A&A, 530 (2011) A59

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Table 1

Fundamental properties of the studied sample of galaxies.

Galaxy	RA	Dec	D	(m − M)₀	D_M 83	θ	A_I	M_B	M_HI	Θ
	(J2000)	(J2000)	(Mpc)		(kpc)	(°)			(10⁶ M_⊙)


ESO381-18	12 44 42.7	−35 58 00	5.32 ± 0.51	28.63 ± 0.14	1156 ± 125	12.54	0.12	−12.91	27/29^a^b	−0.6
ESO381-20	12 46 00.4	−33 50 17	5.44 ± 0.37	28.68 ± 0.14	1100 ± 144	11.53	0.13	−14.44	157/251^a^b	−0.3
ESO443-09, KK170	12 54 53.6	−28 20 27	5.97 ± 0.46	28.88 ± 0.17	1212 ± 415	9.32	0.13	−11.82	14^b	−0.9
IC 4247, ESO444-34	13 26 44.4	−30 21 45	4.97 ± 0.49	28.48 ± 0.21	277 ± 437	2.28	0.12	−14.07	34/37^a^b	1.5
ESO444-78, UGCA365	13 36 30.8	−29 14 11	5.25 ± 0.43	28.60 ± 0.17	107 ± 499	0.64	0.10	−13.11	18/21^b^c	2.1

Notes. The columns are the following: (1): name of the galaxy; (2, 3): equatorial coordinates from Karachentsev et al. (2007) (J2000; units of right ascension are hours, minutes and seconds, and units of declination are degrees, arcminutes and arcseconds); (4, 5): distance and distance modulus of the galaxy derived by Karachentsev et al. (2007) with the tip of the red giant branch method; (6, 7): deprojected and angular distance from M 83; (8): Galactic foreground extinction in the I-band from Schlegel et al. (1998); (9): absolute B magnitude (converted from Bouchard et al. 2009, with the distance modulus listed in Col. (6)); (10): HI mass obtained from different sources and (11): tidal index (i.e., degree of isolation), taken from Karachentsev et al. (2007).

^(a)

Banks et al. (1999), recomputed with updated values of the distance;

^(b)

Georgiev et al. (2008);

^(c)

Bouchard et al. (2009);

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