1998A&A...332..224H

Query : 1998A&A...332..224H

1998A&A...332..224H - Astronomy and Astrophysics, volume 332224-234 (1998/4-1)

Metal abundances of A-type stars in galactic clusters. II. Pleiades, Coma Berenices, Hyades, and Praesepe.

HUI-BON-HOA A. and ALECIAN G.

Abstract (from CDS):

A study of chemical composition for 23 A-type stars in four nearby open clusters (Pleiades, Coma, Hyades and Praesepe) has derived detailed abundances for Mg, Ca, Sc, Cr, Fe, and Ni from high resolution spectroscopy. These results are discussed using the microscopic diffusion model, which yields time-dependent element stratifications as in the case of Am stars. For the Pleiades, the youngest cluster, we find several atypical abundance patterns, which may be transient phases of the Am phenomenon. The members of the older clusters show globally more classical patterns.

Abstract Copyright: ∼

Journal keyword(s): open clusters: individual: Pleiades, Coma Berenices, Hyades, Praesepe - stars: abundances - chemically peculiar

Simbad objects: 27

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Number of rows : 27
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 22615 V* 03 39 00.0585760560 +20 54 56.784028824   6.646 6.493     A4III 66 0
2 V* V624 Tau dS* 03 43 43.2412431936 +24 22 28.445642868   8.49 8.22     A7III 140 0
3 V* V1187 Tau dS* 03 44 00.2690335032 +24 33 25.193571588   8.28 8.07     A4IV 156 0
4 HD 23325 Pe* 03 45 06.5388153048 +24 15 48.650236236   8.96 8.70   8.16 kA6hA9mF1(IV) 112 0
5 HD 23387 ** 03 45 37.7883282408 +24 20 08.303093844   7.33 7.19   6.96 A1V 131 0
6 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
7 V* V647 Tau dS* 03 47 19.3458598776 +24 08 20.815318464   8.51 8.26   7.97 A7Vs 182 0
8 HD 23610 SB* 03 47 22.8997617600 +22 55 19.586180208   8.41 8.20   7.83 A3/7 78 0
9 HD 23631 SB* 03 47 24.4137493776 +23 54 52.826531688   7.34 7.30   7.11 A0V 139 0
10 HD 23924 * 03 49 40.9233801600 +23 20 29.652869940   8.32 8.13   7.91 A5VkA7mA7 124 0
11 * 63 Tau SB* 04 23 25.0640719200 +16 46 38.150834016   5.957 5.625 7.04 5.33 kA4VmF2/5IIIp 304 0
12 * del02 Tau PM* 04 24 05.7614531616 +17 26 38.871301956 5.07 4.95 4.80 4.64 4.57 A2Vs 261 0
13 * del03 Tau a2* 04 25 29.3847186643 +17 55 40.463442784   4.369 4.298 6.18 4.24 A2IV-Vs 429 0
14 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
15 * 81 Tau SB* 04 30 38.8891193184 +15 41 30.760430964   5.739 5.454 6.76   kA3hA8mF3 231 0
16 HD 30210 PM* 04 46 01.7404096416 +11 42 20.112329592   5.566 5.346     Am 175 0
17 * h Ori SB* 05 09 19.6432730712 +09 49 46.502673924 5.83 5.67 5.43 5.25 5.13 A2m 263 0
18 HD 72942 SB* 08 36 17.4427895592 +20 20 29.417866260   7.60 7.48     A3V 90 0
19 HD 73174 SB* 08 37 36.9991109064 +19 43 58.510939908   7.93 7.73     kA4mF0III 100 0
20 NGC 2632 OpC 08 39 58.4 +19 36 33           ~ 1733 0
21 HD 73712 SB* 08 40 20.1451748712 +19 20 56.315955804   7.04 6.78     A9V 106 0
22 HD 73730 V* 08 40 23.4641462184 +19 50 05.895548772   8.20 7.99     F2III 90 0
23 Cl Melotte 111 OpC 12 11 54.9 +25 16 36           ~ 520 0
24 * 8 Com * 12 19 19.1929880208 +23 02 04.821806040   6.416 6.220     kA7hF2mF3 147 0
25 * 13 Com a2* 12 24 18.5489029728 +26 05 54.921403788   5.26 5.18     A3V 148 0
26 HD 108486 EB* 12 27 38.3636590224 +25 54 43.580490048   6.835 6.654     A1IV-VSrSi 138 0
27 * 22 Com * 12 33 34.2193153104 +24 16 58.739975472   6.363 6.243     A4Vm 164 0

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