/ftp/cats/A+AS/130/251



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J/A+AS/130/251      Star Formation in Early-type galaxies (Longhetti+ 1998)
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	table1.dat table2.dat table5.dat table6.dat table8.dat table9.dat
	table10.dat table11.dat table13.dat table12.dat table14.dat
	table15.dat
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Query from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/A+AS/130/251
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drwxr-xr-x 24 cats archive 4096 Jan 29 2012 [Up] drwxr-xr-x 2 cats archive 4096 Dec 15 09:36 [TAR file] -rw-r--r-- 1 cats archive 594 Nov 13 2012 .message -r--r--r-- 1 cats archive 19703 Jul 17 1998 ReadMe -rw-r--r-- 1 cats archive 321 Nov 13 2012 +footg5.gif -rw-r--r-- 1 cats archive 2619 Nov 13 2012 +footg8.gif -r--r--r-- 1 cats archive 975 Mar 26 1998 table1.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 358 Mar 26 1998 table10.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 1063 Jul 17 1998 table11.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 4600 Jul 17 1998 table12.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 3311 Jul 17 1998 table13.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 334 Mar 26 1998 table14.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 579 Mar 26 1998 table15.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 1279 Mar 26 1998 table2.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 562 Mar 26 1998 table5.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 502 Mar 26 1998 table6.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 377 Mar 26 1998 table8.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 283 Mar 26 1998 table9.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : J/A+AS/130/251 Star Formation in Early-type galaxies (Longhetti+ 1998) ================================================================================ Star formation history of early-type galaxies in low density environments. I. Nuclear line-strength indices. Longhetti M., Rampazzo R., Bressan A., Chiosi C. <Astron. Astrophys. Suppl. Ser. 130, 251 (1998)> =1998A&AS..130..251L (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Galaxy catalogs ; Spectroscopy Keywords: galaxies: fundamental parameters - galaxies: elliptical and lenticular - galaxies: interactions - galaxies: evolution Abstract: The paper is the first of a series (Longhetti et al., 1998A&AS..130..267L, 1998b (Paper III) in press) dedicated to the study of the star formation history in early-type galaxies which show fine structures and/or interaction signatures. It presents nuclear line-strength indices for a sample composed of 21 shell galaxies, from the Malin & Carter (1983ApJ...274..534M) southern survey, and 30 members of isolated interacting pairs, from the Reduzzi & Rampazzo (1995ApL....30....1R) catalogue, located in low density environments. The spectral range covers 3700AA<lambda<5700AA at 2.1AAFWHM resolution. We measure 16 red (lambda>4200AA) indices defined by the Lick Group. Measures have been transformed into the Lick-IDS ``standard'' system. The procedure has been tested on a set of 5 elliptical galaxies selected from the Gonzalez (1993, Ph.D. thesis) sample. We derive also three blue (lambda<4200) indices, namely DELTA(4000AA) defined by Hamilton (1985ApJ...297..371H), H+K(CaII) and Hdelta/FeI defined by Rose (1984AJ.....89.1238R, 1985AJ.....90.1927R). Blue indices are correlated to the age of the last starburst occurred in a galaxy (Leonardi & Rose, 1996AJ....111..182L). The indices determination, the estimate of the measurement errors and the correction for the galaxies velocity dispersions are discussed in detail. In the Appendix A we present the indices for a set of hot stars (T>10000K) which may be used for extending, toward high temperatures, Worthey (1992, Ph.D. Thesis) fitting functions.

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