2001PASP..113..723G

Query : 2001PASP..113..723G

2001PASP..113..723G - Publ. Astron. Soc. Pac., 113, 723-735 (2001/June-0)

Line-depth ratios: temperature indices for giant stars.

GRAY D.F. and BROWN K.

Abstract (from CDS):

Ratios of the depths of appropriately chosen spectral lines are shown to be excellent indicators of stellar temperatures for giant stars in the G3 to K3 spectral type range. We calibrate five line-depth ratios against B-V and R-I color indices and then translate these into temperatures. Our goal is to set up line-depth ratios to (1) accurately monitor any temperature variations of a few degrees or less that may occur during magnetic cycles or oscillations and (2) rank giants precisely on a temperature coordinate. This is not an absolute calibration of stellar temperatures. We show how giant spectra can be misleading because of the complex dependences of spectral lines on metallicity and absolute magnitude as well as temperature, and it is essential to make corrections to accommodate these complications. The five line-depth ratios we use yield precision for monitoring, i.e., detecting temperature variations, of 4 K from a single exposure. Ranking giants by temperature can be done with errors of ∼25 K but could be improved with better determinations of the metallicity and absolute-magnitude corrections.

Abstract Copyright: ∼

Journal keyword(s): Stars: Hertzsprung-Russell Diagram - Stars: Atmospheres - Stars: Fundamental Parameters - Stars: Late-Type

Simbad objects: 92

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Number of rows : 92
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 * bet Cet PM* 00 43 35.37090 -17 59 11.7827 3.90 3.02 2.01 1.29 0.78 G9.5IIICH-1 543 1
2 * phi01 Cet PM* 00 44 11.4000904231 -10 36 34.382643011   5.773 4.767     K0III 123 0
3 * eps Psc PM* 01 02 56.6083833328 +07 53 24.479451631 5.95 5.24 4.28 3.50 2.98 G9IIIbFe-2 170 0
4 * tau Psc PM* 01 11 39.6171666936 +30 05 22.696564992   5.605 4.511     K0.5IIIb 150 0
5 * phi Psc SB* 01 13 44.9460564960 +24 35 01.311416628 6.57 5.69 4.66 3.91 3.39 K0III 106 0
6 * tet Cet HB* 01 24 01.4032816333 -08 10 59.739230440 5.57 4.65 3.59 2.83 2.26 K0IIIb 206 0
7 * psi Cas PM* 01 25 56.0231935514 +68 07 48.049669752   5.780 4.727     K0III-IIIbCN0.5 115 0
8 * alf Ari PM* 02 07 10.40570 +23 27 44.7032 4.29 3.17 2.01 1.15 0.54 K2-IIIbCa-1 644 2
9 * nu. Cet SB* 02 35 52.4740495740 +05 35 35.664001770   5.742 4.871     G8III 97 0
10 * kap Per PM* 03 09 29.8036400506 +44 51 26.849828627 5.62 4.79 3.81 3.07 2.57 G9.5IIIb 246 0
11 * omi Tau SB* 03 24 48.7983185016 +09 01 43.930632036 5.090 4.490 3.600 2.92 2.47 G6III 237 0
12 * 37 Tau PM* 04 04 41.7128811713 +22 04 54.946823724 6.41 5.44 4.37 3.58 3.05 K0III-IIIb 194 0
13 * gam Tau ** 04 19 47.6039239005 +15 37 39.511385129 5.46 4.64 3.65 4.83   G9.5IIIabCN0.5 569 0
14 * del Tau SB* 04 22 56.0951595936 +17 32 33.049802364 5.56 4.74 3.76 5.56   G9.5IIICN0.5 542 0
15 * tet01 Tau SB* 04 28 34.4979222951 +15 57 44.221169423 5.510 4.780 3.840 5.48   G9IIIFe-0.5 509 0
16 * eps Tau ** 04 28 37.0002551195 +19 10 49.563140930 5.42 4.54 3.53     G9.5IIICN0.5 628 1
17 * alf Tau LP? 04 35 55.23907 +16 30 33.4885 4.32 2.40 0.86 -0.37 -1.31 K5+III 1298 2
18 * e Ori * 05 23 56.8277860189 -07 48 29.025349522 5.78 5.08 4.12 3.40 2.90 G8+III 157 0
19 * phi02 Ori PM* 05 36 54.3885728561 +09 17 26.416510827 5.70 5.04 4.09 3.33 2.78 G9.5IIIbFe-2.5 371 0
20 * tau Aur * 05 49 10.4375785154 +39 10 51.860340710 6.160 5.450 4.500 3.80 3.31 G8IIIbFe-1 162 0
21 * del Lep PM* 05 51 19.2960278488 -20 52 44.730655825 5.54 4.83 3.85 2.99 2.43 K0IIIbFe-1.5CH0.5 222 0
22 * nu. Aur * 05 51 29.3694581040 +39 08 54.686085540 6.160 5.090 3.950 3.15 2.59 K0.5IIICN0.5 206 0
23 * 30 Gem PM* 06 43 59.2871476656 +13 13 40.799645724 6.82 5.65 4.49 3.63 3.03 K0+IIICa1 156 0
24 * 18 Mon SB* 06 47 51.6478856352 +02 24 43.835011128 6.62 5.58 4.47 3.68 3.13 K0+III 162 0
25 * iot Gem ** 07 25 43.5956409143 +27 47 53.086950407 5.67 4.83 3.79 3.02 2.52 G9IIIb 222 0
26 * alf Mon PM* 07 41 14.8319734511 -09 33 04.077766984 5.83 4.95 3.93 3.16 2.64 G9.5III-IIIbFe-0.5 214 0
27 * kap Gem ** 07 44 26.8438122013 +24 23 52.787290890 5.19 4.49 3.57 2.86 2.41 G8III-IIIb 308 0
28 * bet Gem PM* 07 45 18.94987 +28 01 34.3160 3.00 2.14 1.14 0.39 -0.11 K0IIIb 1150 2
29 * omi UMa PM* 08 30 15.8701566400 +60 43 05.405606188 4.79 4.27 3.42 2.76 2.31 G5III: 271 1
30 * del Cnc ** 08 44 41.0991810454 +18 09 15.509048595 6.01 5.02 3.94 3.16 2.62 K0+IIIb 212 0
31 * 46 Cnc * 08 45 21.4239339336 +30 41 51.900443376   7.055 6.119     G5III 59 0
32 * D Hya * 08 46 22.5444058272 -13 32 51.805135176 5.86 5.22 4.32 3.64 3.18 G8IIIbCN-1 84 0
33 * ksi Leo PM* 09 31 56.7409736040 +11 17 59.358476976   6.015 4.963     G9.5III 119 0
34 HD 82741 * 09 35 03.8297521152 +39 37 17.373515520   5.788 4.800     G9.5IIIbFe-1 110 0
35 * 46 LMi PM* 10 53 18.6891667765 +34 12 53.611679098 5.79 4.87 3.83 3.00 2.46 K0+III-IV 244 0
36 * alf Crt PM* 10 59 46.4651557828 -18 17 55.630394216 6.14 5.16 4.07 3.27 2.72 K0IIIb 224 0
37 * alf UMa ** 11 03 43.67152 +61 45 03.7249 3.78 2.86 1.79 0.98 0.40 G9III+A7.5 448 0
38 * del Crt PM* 11 19 20.4473515372 -14 46 42.743409457 5.66 4.67 3.56 2.73 2.13 G9IIICH0.5 180 0
39 * c Vir RG* 12 20 20.9813922197 +03 18 45.255217001 7.27 6.12 4.96 4.07 3.46 K0.5IIIbFe-0.5 380 0
40 * 11 Com PM* 12 20 43.0257695904 +17 47 34.327512348   5.74 4.74     G8+IIIFe-1 178 1
41 * 5 CVn * 12 24 01.4942854464 +51 33 44.124636780   5.643 4.761     G7IIIBa0.3 160 0
42 * eps Vir PM* 13 02 10.5970152536 +10 57 32.935398266 4.45 3.71 2.79 2.16 1.71 G8III-IIIb 574 0
43 HD 115004 PM* 13 13 42.9416937024 +40 09 10.386106164   5.99 4.94     G8.5IIICN0.5 98 0
44 * ups Boo PM* 13 49 28.6412870007 +15 47 52.456719303 7.46 5.59 4.07 2.87 2.00 K5.5III 161 0
45 * alf Boo RG* 14 15 39.67207 +19 10 56.6730 2.46 1.18 -0.05 -1.03 -1.68 K1.5IIIFe-0.5 2417 1
46 * A Boo SB* 14 17 59.8173240168 +35 30 34.244293500   5.852 4.796     K0III 115 0
47 * bet Boo PM* 15 01 56.7623044453 +40 23 26.046853660 5.21 4.47 3.52 2.85 2.37 G8IIIaFe-0.5 267 0
48 * del Boo PM* 15 15 30.1628200572 +33 18 53.392471806 5.12 4.44 3.49 2.76 2.25 G8IIIFe-1 388 0
49 * alf Ser PM* 15 44 16.0741095811 +06 25 32.268792881 5.080 3.800 2.630 1.82 1.25 K2IIIbCN1 533 0
50 * del CrB RS* 15 49 35.6469970632 +26 04 06.214310112 5.80 5.43 4.63 4.00 3.58 G5III-IVFe-1 216 0
51 * ome Ser PM* 15 50 17.5468226304 +02 11 47.432004216   6.236 5.217     K0IV 146 1
52 * ome02 Sco PM* 16 07 24.3270139738 -20 52 07.551954425 5.68 5.17 4.33 3.68 3.25 G4II-III 136 0
53 * ksi CrB ** 16 22 05.8238662920 +30 53 31.185448080   5.833 4.849     G9IIIFe-0.5 136 0
54 * eta Dra PM* 16 23 59.4863284800 +61 30 51.155139060 4.35 3.65 2.74 2.12 1.66 G8-IIIab 313 0
55 * bet Her SB* 16 30 13.2003216885 +21 29 22.598684027 4.39 3.70 2.77 2.13 1.65 G7IIIaFe-0.5 331 0
56 * phi Oph PM* 16 31 08.3669673955 -16 36 45.831122231 5.90 5.19 4.27 3.62 3.18 G8+IIIa 129 0
57 * eta Her PM* 16 42 53.7649454572 +38 55 20.117710727 5.03 4.42 3.50 2.83 2.35 G7IIIFe-1 296 0
58 * bet Oph PM* 17 43 28.3519097803 +04 34 02.293206489 5.150 3.930 2.750 1.96 1.38 K2IIICN0.5 490 0
59 * gam Dra * 17 56 36.36988 +51 29 20.0242 5.630 3.760 2.230 1.08 0.23 K5III 581 1
60 * ksi Her LP* 17 57 45.8856741278 +29 14 52.366005079 5.34 4.64 3.70 3.01 2.55 G8.5III 252 0
61 * nu. Oph PM* 17 59 01.5922136612 -09 46 25.080976810 5.20 4.33 3.34 2.64 2.16 G9IIIa 226 1
62 * 71 Oph * 18 07 18.3593981592 +08 44 01.922061912   5.592 4.640     G8III 182 0
63 * 74 Oph * 18 20 52.0636719528 +03 22 37.790695740   5.764 4.856     G8III 117 0
64 * zet Sct SB* 18 23 39.5786582280 -08 56 04.151632668   5.619 4.664     G9-IIIbFe-0.5 85 0
65 * alf Sct PM* 18 35 12.4271571798 -08 14 38.653839451 6.70 5.17 3.83 2.86 2.18 K3III 189 0
66 HD 173780 * 18 46 04.4794939944 +26 39 43.664068548 7.26 6.04 4.84 3.96 3.35 K2III 124 0
67 HD 175535 SB* 18 53 13.5509916072 +50 42 29.594035404   5.82 4.92     G7IIIaFe-1 93 0
68 * ups Dra SB* 18 54 23.8518781344 +71 17 49.906555332   5.964 4.814     K0IIICN0.5 110 0
69 * del Dra PM* 19 12 33.3013729052 +67 39 41.539165396 4.85 4.07 3.07 2.37 1.86 G9III 295 0
70 * tau Dra PM* 19 15 32.9853001560 +73 21 19.878315048 7.15 5.70 4.45 3.55 2.97 K2+IIIbCN1 132 0
71 * kap Cyg PM* 19 17 06.1683228165 +53 22 06.449800127 5.47 4.73 3.76 3.13 2.66 G9III 215 0
72 * eps Dra PM* 19 48 10.3504589976 +70 16 04.549073664   4.83 3.91     G7IIIbFe-1 160 0
73 * ksi Aql ** 19 54 14.8815179040 +08 27 41.235438096   5.759 4.707     G9.5IIIb 157 1
74 * eta Cyg * 19 56 18.3718373206 +35 05 00.322387793 5.800 4.910 3.880 3.19 2.66 K0III 289 0
75 * rho Dra PM* 20 02 49.0708468414 +67 52 24.830813366 7.31 5.81 4.50 3.57 2.92 K2+IIICN1Ca1 91 0
76 * l Aql SB* 20 38 20.2844885280 -01 06 18.422101548 5.98 5.29 4.33 3.66 3.20 G7.5IIIa 104 0
77 * 52 Cyg * 20 45 39.7531133582 +30 43 10.972342474 6.16 5.29 4.23 3.46 2.93 K0IIIa 130 0
78 * eps Cyg ** 20 46 12.6722768426 +33 58 13.182037125 4.370 3.520 2.480 1.73 1.19 K0III 519 0
79 * nu. Aqr PM* 21 09 35.6483238554 -11 22 18.085441011 6.13 5.46 4.52 3.83 3.37 K0III 106 0
80 * zet Cyg SB* 21 12 56.1859894833 +30 13 36.835250232 4.96 4.20 3.21 2.52 2.04 G8+III-IIIaBa0.5 353 0
81 * 11 Cep PM* 21 41 55.3084514088 +71 18 41.267467908       3.9   K0.5III 156 0
82 * kap Cap PM* 21 42 39.5080810109 -18 51 58.755183216   5.593 4.726     G8III 89 0
83 HD 209945 V* 22 06 01.9526899392 +45 00 51.650286984   6.649 5.070     K5III 56 0
84 * 35 Peg PM* 22 27 51.5231162634 +04 41 44.404460456 6.74 5.86 4.80 4.02 3.46 K1-III-IV 276 0
85 * 11 Lac PM* 22 40 30.8584750462 +44 16 34.706857320 7.15 5.79 4.46 3.54 2.86 K2.5III 148 0
86 * iot Cep PM* 22 49 40.8174918750 +66 12 01.458192633 5.50 4.60 3.54 2.69 2.19 K0-III 257 0
87 * mu. Peg PM* 22 50 00.1930748087 +24 36 05.692620534 5.10 4.42 3.48 2.80 2.33 G8+III 304 0
88 * 3 And PM* 23 04 10.9826882352 +50 03 07.525524888   5.71   4.0   K0IIIb 134 0
89 * psi01 Aqr PM* 23 15 53.4940495770 -09 05 15.844964053 6.37 5.36 4.25 3.46 2.90 K1-IIIFe-0.5 260 1
90 * gam Psc PM* 23 17 09.9371132484 +03 16 56.245688417 5.20 4.62 3.70 2.98 2.47 G9III:Fe-2 277 0
91 * b01 Aqr PM* 23 22 58.2258307196 -20 06 02.095519871 6.03 5.08 3.98 3.16 2.56 K1III 101 0
92 * 78 Peg PM* 23 43 59.4852779160 +29 21 41.240147040   5.94 4.96 6.27   G8IIIb 96 0

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