2008A&A...483..891F


Query : 2008A&A...483..891F

2008A&A...483..891F - Astronomy and Astrophysics, volume 483, 891-902 (2008/6-1)

The effect of rotation on the abundances of the chemical elements of the A-type stars in the Praesepe cluster.

FOSSATI L., BAGNULO S., LANDSTREET J., WADE G., KOCHUKHOV O., MONIER R., WEISS W. and GEBRAN M.

Abstract (from CDS):

We study how chemical abundances of late B-, A-, and early F-type stars evolve with time, and we search for correlations between the abundance of chemical elements and other stellar parameters, such as effective temperature and vsini. We observed a large number of B-, A-, and F-type stars belonging to open clusters of different ages. In this paper we concentrate on the Praesepe cluster (logt=8.85), for which we have obtained high-resolution, high signal-to-noise ratio spectra of sixteen normal A- and F-type stars and one Am star, using the SOPHIE spectrograph of the Observatoire de Haute-Provence. For all the observed stars, we derived fundamental parameters and chemical abundances. In addition, we discuss another eight Am stars belonging to the same cluster, for which the abundance analysis had been presented in a previous paper. We find a strong correlation between the peculiarity of Am stars and vsini. The abundance of the elements underabundant in Am stars increases with vsini, while it decreases for the overabundant elements. Chemical abundances of various elements appear correlated with the iron abundance.

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: atmospheres - stars: fundamental parameters - stars: chemically peculiar

Simbad objects: 28

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Number of rows : 28
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 HD 72757 * 08 35 17.7710846928 +20 33 52.551983799   8.65 8.40     F0 19 0
2 HD 72846 * 08 35 45.0723566995 +19 46 16.180181777   7.62 7.48     A2 47 0
3 HD 72942 SB* 08 36 17.4427761497 +20 20 29.420514548   7.60 7.48     A3V 69 0
4 HD 73045 SB* 08 36 48.0045231265 +18 52 58.099706976   8.89 8.62     Am 77 0
5 HD 73174 SB* 08 37 36.9992831466 +19 43 58.533851069   7.95 7.76     Am 85 0
6 V* BR Cnc dS* 08 37 40.7066996206 +19 31 06.308866268   8.48 8.25     F0Vn 106 0
7 V* CY Cnc dS* 08 38 37.8616687005 +19 59 23.097436500   8.34 8.14     F0V 84 0
8 HD 73430 V* 08 39 03.5857102608 +19 59 59.099384333   8.51 8.33     A9V 66 0
9 V* BS Cnc dS* 08 39 09.0980604568 +19 35 32.618111318   8.78 8.59     A9V 118 0
10 * 38 Cnc dS* 08 39 42.6544506442 +19 46 42.438575398   6.88 6.66     F0IV 132 0
11 HD 73574 ** 08 39 42.7919607909 +20 05 10.065754649   9.11 8.85 8.62   A5V 80 0
12 HD 73618 ** 08 39 56.4910221018 +19 33 10.817863022   7.49 7.30     Am 87 0
13 * 40 Cnc BS* 08 40 11.4527985964 +19 58 16.085231072   6.62 6.61     A1V 145 0
14 NGC 2632 OpC 08 40 13 +19 37.3           ~ 1347 0
15 HD 73711 * 08 40 18.0972692668 +19 31 55.164675891   7.67 7.51     F0III 105 0
16 HD 73709 SB* 08 40 20.7480896063 +19 41 12.244320818   7.87 7.68     kA2hA5mF0(III-IV)(Cr) 100 0
17 HD 73730 V* 08 40 23.4663822528 +19 50 05.862629940   8.20 7.99     F2III 78 0
18 V* BV Cnc dS* 08 40 32.9592145589 +19 11 39.571077009   8.98 8.72     F0V 84 0
19 V* BW Cnc dS* 08 40 52.4782621428 +20 15 59.474768127   8.74 8.48     F0Vn 96 0
20 HD 73818 * 08 40 56.9349347733 +19 56 05.478151995   8.99 9.096     Am 83 0
21 HD 73993 V* 08 41 53.1405196920 +20 09 33.982499946   8.84 8.56     F2Vn 54 0
22 V* BX Cnc dS* 08 42 06.4975124825 +19 24 40.526818039   8.17 7.97     A7V 106 0
23 V* BY Cnc dS* 08 42 10.8051242141 +18 56 03.751801350   8.09 7.91     A7Vn 85 0
24 HD 74135 * 08 42 53.0641639632 +20 49 09.260183285   9.15 8.86     A9III 36 0
25 HD 74589 * 08 45 20.5291174657 +18 52 31.431110303   8.69 8.45     F0 32 0
26 HD 74587 dS* 08 45 28.2544056384 +20 23 43.407692236   9.164 8.48     A5 33 0
27 HD 74656 * 08 45 46.5356642789 +19 02 58.074296486   8.25 8.00 8.0   Am 42 0
28 HD 74718 * 08 46 15.4645762519 +19 42 32.973568084   8.60 8.38     A5 34 0

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2021.12.06-20:02:51

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