J/AJ/158/157 Fairly bright slow rotators chemical compositions (Monier+, 2019)
The chemical compositions of the two new HgMn stars HD 30085 and HD 30963:
comparison to χ Lupi A, ν Cap, and HD 174567.
Monier R., Griffin E., Gebran M., Kilicoglu T., Merle T., Royer F.
<Astron. J., 158, 157 (2019)>
=2019AJ....158..157M 2019AJ....158..157M (SIMBAD/NED BibCode)
ADC_Keywords: Stars, bright ; Spectroscopy ; Equivalent widths ; Abundances
Keywords: HD 141556 - stars: chemically peculiar -
stars: individual (HD 30085, HD 30963, HD 174567)
Abstract:
We report on a detailed abundance study of the fairly bright slow rotators
HD 30085 (A0 IV), HD 30963 (B9 III), and HD 174567 (A0 V), hitherto
reported as normal stars and the sharp-lined χ Lupi A (B9 IV HgMn).
In the spectra of HD 30085 and HD 30963, the Hg II line at 3984 Å is
conspicuous and numerous lines of silicon, manganese, chromium, titanium,
iron, strontium, yttrium, and zirconium appear to be strong absorbers.
A comparison of the mean spectra of HD 30085 and HD 30963 with a grid
of synthetic spectra for selected unblended lines having reliable updated
atomic data reveals large overabundances of phosphorus, titanium, chromium,
manganese, strontium, yttrium, zirconium, barium, platinum, and mercury,
and underabundances of helium, magnesium, scandium, and nickel. The surface
abundances of χ Lupi A have been rederived on the same effective
temperature scale and using the same atomic data for consistency and
comparison for HD 30085 and HD 30963. For HD 174567, milder deficiencies
and excesses are found. The abundances of sodium, magnesium, and calcium
have been corrected for non-LTE (NLTE) effects. The effective temperatures,
surface gravities, low projected rotational velocities, and the peculiar
abundance patterns of HD 30085 and HD 30963 show that these stars are two
new HgMn stars and should be reclassified as such. HD 174567 is most likely
a new marginally chemically peculiar star. A list of the identifications of
lines absorbing more than 2% in the spectrum of HD 30085 is also provided.
Description:
The high-resolution spectra of HD 30085, HD 30963, and HD 174567 have
been obtained at the Observatoire de Haute Provence with SOPHIE, the
echelle spectrograph in its high-resolution mode (R=75000) yielding a full
spectral coverage from 3820 to 6930 Å in 39 orders. A detailed technical
description of SOPHIE is given in Perruchot et al. (2008SPIE.7014E..0JP).
SOPHIE is a cross-dispersed, environmentally stabilized echelle
spectrograph dedicated to high-precision radial velocity. The spectra are
extracted online from the detector images using a specific pipeline adapted
from that of the High Accuracy Radial Velocity Planet Searcher (HARPS).
Objects:
---------------------------------------------------
RA (ICRS) DE Designation(s)
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04 50 36.39 +70 56 29.5 HD 30085 = HIP 22508
04 51 39.25 -10 17 25.2 HD 30963 = HIP 22588
18 49 44.09 +31 37 46.1 HD 174567 = HIP 92396
15 50 57.54 -33 37 37.8 HD 141556 = HIP 77634
---------------------------------------------------
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table3.dat 36 11 The Ga II λ 6334.069 line list
table4.dat 36 35 The Ba II line lists
table5.dat 36 18 The Hg II 3983.93 Å line list
table8.dat 158 163 Elemental abundances from unblended lines
for HD 30085, HD 30963, HD 174567, and HD 141556
table10.dat 52 1148 Identifications of lines absorbing more than 2%
for HD 30085
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See also:
J/A+A/274/335 : Abundances in normal late-B and HgMn stars (Smith+ 1993)
J/ApJS/162/227 : Transition probabilities for SmII (Lawler+, 2006)
J/ApJS/167/292 : Laboratory transition probabilities for Gd II
(Den Hartog+, 2006)
J/ApJS/182/51 : Transition probabilities of rare earth elements
(Lawler+, 2009)
J/ApJS/213/28 : Spectrum analysis of CrII (Sansonetti+, 2014)
J/ApJS/214/18 : VII log(gf) values, and V abundance in HD 84937 (Wood+ 2014)
J/MNRAS/460/1912 : The Catalog of HgMn Stars (Ghazaryan+, 2016)
Byte-by-byte Description of file: table3.dat table4.dat table5.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 F8.3 0.1nm Wave [3983.77/6334.37] Wavelength (Å)
10- 14 A5 --- Species Species identifier
16- 20 F5.2 [-] log(gf) [-4.81/0.4] Log oscillator strength
22- 31 F10.3 cm-1 Elow [0/120272] Lower energy level
33- 36 F4.1 0.1pm EW [0/26.5] Equivalent width (mÅ)
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Byte-by-byte Description of file: table8.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 A6 --- Species Species identifier
8- 15 F8.3 0.1nm Wave [497.657/6371.37]? Wavelength (Å)
17- 23 F7.4 [-] log(gf) [-3.5/0.86]? Log oscillator strength
25- 27 A3 --- n_log(gf) [hfs ] hfs for hyperfine structure
29- 40 A12 --- Ref Reference (1)
42 A1 --- l_log(X/H)1 [<] Limit flag on log(X/H)1
43- 48 F6.2 [-] log(X/H)1 [-12.1/-2.05]? Log species abundance for
HD 30085
50- 51 A2 --- n_log(X/H)1 [bl ] Note on log(X/H)1 (2)
53- 58 F6.2 [-] log(X/H)1mean [-12.1/-2.07]? Mean log species abundance
for HD 30085
60- 64 F5.2 [-] [X/H]1mean [-4.64/5.75]? Mean species abundance for
HD 30085
66 A1 --- l_log(X/H)2 [<] Limit flag on log(X/H)2
67- 72 F6.2 [-] log(X/H)2 [-12.1/-1.75]? Log species abundance for
HD 30963
74- 75 A2 --- n_log(X/H)2 [bl ] Note on log(X/H)2 (2)
77- 82 F6.2 [-] log(X/H)2mean [-12.1/-1.76]? Mean log species abundance
for HD 30963
84- 88 F5.2 [-] [X/H]2mean [-2/5.56]? Mean species abundance for
HD 30963
90 A1 --- l_log(X/H)3 [<] Limit flag on log(X/H)3
91- 96 F6.2 [-] log(X/H)3 [-12/1]? Log species abundance for
HD 174567
98-102 A5 --- n_log(X/H)3 [bl * noisy] Note on log(X/H)3 (2)
104-109 F6.2 --- log(X/H)3mean [-12/-1.36]? Mean log species abundance
for HD 174567
111-112 A2 --- n_log(X/H)3mean [bl ] Note on log(X/H)3mean
114-118 F5.2 [-] [X/H]3mean [-9.5/3.26]? Mean species abundance for
HD 174567
120-121 A2 --- n_[X/H]3mean [bl ] Note on [X/H]3mean
123 A1 --- l_log(X/H)4 [<] Limit flag on log(X/H)4
124-129 F6.2 [-] log(X/H)4 [-10.99/2.4]? Log species abundance for
Chi Lupi A
131-134 A4 --- n_log(X/H)4 [bl *] Note on log(X/H)4 (2)
136-141 F6.2 [-] log(X/H)4mean [-10.99/-1.67]? Mean log species abundance
for Chi Lupi A
143-144 A2 --- n_log(X/H)4mean [bl ] Note on log(X/H)4mean (2)
146-150 F5.2 [-] [X/H]4mean [-4.96/5]? Mean species abundance for
Chi Lupi A
152-153 A2 --- n_[X/H]4mean [bl ] Note on [X/H]4mean (2)
155-158 F4.2 [-] sigma[X/H] [0/0.23]? Abundance total error
--------------------------------------------------------------------------------
Note (1): Reference as follows:
BGF = Biemont et al. (1989A&A...209..391B 1989A&A...209..391B);
Bie11 = Biemont et al. (2011MNRAS.414.3350B 2011MNRAS.414.3350B);
DH06 = Den Hartog et al. (2006, J/ApJS/167/292);
Do03 = Dolk et al. (2003A&A...402..299D 2003A&A...402..299D);
Dwo98 = Dworetsky et al. (1998A&A...333..665D 1998A&A...333..665D);
ISAN = A. N. Ryabtsev (2010, private communication);
K03 = Kurucz (2003, On-line Database of Observed and Predicted Atomic
Transitions 2003 version);
K10 = Kurucz (2010, On-line Database of Observed and Predicted Atomic
Transitions 2010);
L06 = Ljung et al. (2006A&A...456.1181L 2006A&A...456.1181L);
LA01 = Lawler et al. (2001ApJS..137..341L 2001ApJS..137..341L);
LA04 = Lawler et al. (2004ApJ...604..850L 2004ApJ...604..850L);
LA06 = Lawler et al. (2006, J/ApJS/162/227);
LA08 = Lawler et al. (2008ApJS..178...71L 2008ApJS..178...71L);
LSCI = Lawler et al. (2009, J/ApJS/182/51);
LWHS = Lawler et al. (2001ApJ...563.1075L 2001ApJ...563.1075L);
Lanz1993 = Lanz et al. (1993A&A...272..465L 1993A&A...272..465L);
NIST = Kramida et al. 2018, Atomic Spectra Database, Version 5.6,
http://www.nist.gov/pml/atomic-spectra-database;
NIST/ASD = Kramida et al. 2018, Atomic Spectra Database, Version 5.6,
http://www.nist.gov/pml/atomic-spectra-database;
Niel2000 = Nielsen et al. (2000A&A...363..815N 2000A&A...363..815N);
PQWB = Palmeri et al. (2000PhyS...61..323P 2000PhyS...61..323P);
RRKB = Ryabchikova et al. (2006A&A...456..329R 2006A&A...456..329R);
SN14 = Sansonetti & Nave (2014, J/ApJS/213/28);
VALD = Ryabchikova et al. (2015PhyS...90e4005R 2015PhyS...90e4005R);
WLDS = Wood et al. (2014, J/ApJS/214/18);
Zi99 = Zhiguo et al. (1999EPJD....7..499Z 1999EPJD....7..499Z).
Note (2): Note as follows:
bl = Blended line;
* = Not explained in this paper.
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Byte-by-byte Description of file: table10.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 F8.3 0.1nm OWave [3920.738/6862.706] Observed wavelength (Å)
10- 17 F8.3 0.1nm LWave [3920.627/6862.511] Laboratory wavelength (Å)
19- 24 A6 --- Species Species identifier
26- 31 F6.3 [-] log(gf) [-5.23/1.16] Log oscillator strength
33- 42 F10.3 cm-1 Elow [0/171134.897] Lower level energy
44- 52 A9 --- Ref Reference code (1)
--------------------------------------------------------------------------------
Note (1): Reference code as follows:
NIST = Kramida et al. 2018, Atomic Spectra Database, Version 5.6,
http://www.nist.gov/pml/atomic-spectra-database;
VALD = Ryabchikova et al. 2015PhyS...90e4005R 2015PhyS...90e4005R.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 06-Nov-2019