2016MNRAS.457.2043B

Query : 2016MNRAS.457.2043B

2016MNRAS.457.2043B - Mon. Not. R. Astron. Soc., 457, 2043-2047 (2016/April-1)

A new titanium oxide index in the visual band.

BIDARAN B., MIRTORABI M.T. and AZIZI F.

Abstract (from CDS):

We introduce a new colour index consisting of two spectral bandwidths to measure the titanium oxide (TiO) absorption band strength centred at 567 nm. Based on the most up-to-date line list for TiO, we regenerate a grid of synthesized spectra and investigate the temperature sensitivity of the index. The new index behaves similarly to the older TiO index of Wing, in that it decreases monotonically from the coolest atmosphere with Teff=2800 up to Teff=4000 where the TiO molecules disassociate. To further examine the feasibility of the new index, we reproduce the calibration using a list of observed high-resolution spectra and we find similar results. This index extends the TiO absorption band capability to measure the effective temperatures of late K to M stars to the visual spectrum, where it is more accessible to small telescopes for long-term dedicated observation.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): line: formation - molecular data - instrumentation: spectrographs - stars: late-type

Simbad objects: 34

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Number of rows : 34
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 * 3 Cet s*r 00 04 30.1187522978 -10 30 34.278904524   6.541 4.924     K3Ib 119 0
2 * 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
3 * 16 Aur SB* 05 18 10.5757087896 +33 22 17.767496392       3.8   K2.5IIIbCN-0.5 150 0
4 HD 39225 LP? 05 52 40.0930146912 +33 55 02.866257912   7.65 6.07     M1+IIIFe-1 57 0
5 HD 39853 RG* 05 54 43.6305696648 -11 46 27.098071500   7.148 5.613     K4III 127 0
6 * 6 Gem s*r 06 12 19.0988355816 +22 54 30.653107164 11.11 8.63 6.39 4.55 3.07 M1-M2Ia-Iab 187 0
7 * psi01 Aur s*r 06 24 53.9015502096 +49 17 16.411221960 8.85 6.67 4.75 3.36 2.29 K5-M1Iab-Ib 178 0
8 V* RS Cnc S* 09 10 38.7970163421 +30 57 47.291122681 8.65 7.62 5.95 3.06 0.73 M6S 330 0
9 V* DR Leo LP* 09 41 35.1164474616 +31 16 40.128589164 9.18 7.42 5.84 4.55 3.58 K6III 54 0
10 * eps Crt * 11 24 36.5912121144 -10 51 33.575503752   6.338 4.802     K4III 95 0
11 * nu. Vir LP* 11 45 51.5595979999 +06 31 45.748996439 7.32 5.54 4.04 2.79 1.78 M1III 267 0
12 HD 111355 ** 12 49 07.7038622232 -45 04 08.054389416   10.852 10.254 10.182   G2/3V 6 0
13 * del Vir RG* 12 55 36.2086240844 +03 23 50.888053818 6.76 4.97 3.38 1.86 0.53 M3+III 282 0
14 * 50 Vir V* 13 09 45.2812131984 -10 19 45.622835976   7.436 5.943     K4III 28 0
15 V* AW CVn LP? 13 51 47.4749903810 +34 26 39.265009533 8.36 6.40 4.74 3.21 1.93 M3-IIIa 125 0
16 V* RX Boo AB* 14 24 11.6253191184 +25 42 13.394221596   9.23 8.60     M7.5-M8 457 0
17 HD 128000 * 14 32 30.9293109864 +55 23 52.781262432   7.244 5.718     K5III 46 0
18 * 11 UMi * 15 17 05.8894632720 +71 49 26.047336872   6.384 5.015     K4III 138 1
19 * tet UMi V* 15 31 24.9136103328 +77 20 57.695859924   6.535 4.982     K5-IIICN0.5 126 0
20 * del Oph PM* 16 14 20.7390218758 -03 41 39.572826363 6.30 4.34 2.75 1.46 0.43 M0.5III 377 0
21 HD 147379 PM* 16 16 42.7463475871 +67 14 19.831647336   10.01   8.730   M1-Ve 262 0
22 HD 148513 PM* 16 28 33.9807973104 +00 39 54.001143144 8.65 6.85 5.39     K3V 170 0
23 * h Her PM* 16 32 36.2919789280 +11 29 16.948144457 8.16 6.34 4.85 3.65 2.79 K4.5III 164 0
24 * 104 Her V* 18 11 54.1566238248 +31 24 19.256317416 8.56 6.62 4.97     M3III 127 0
25 V* R Aql OH* 19 06 22.2510922392 +08 13 48.012661776 8.06 7.69 6.09     M6.5-9e 579 2
26 HD 180928 PM* 19 19 00.0959552544 -15 32 11.647331124 9.06 7.49 6.06 4.94 4.11 K4III 101 0
27 * gam Sge PM* 19 58 45.4282303572 +19 29 31.726069716 6.97 5.04 3.47 2.27 1.35 M0-III 276 0
28 V* EU Del LP* 20 37 54.7276970976 +18 16 06.894742044 8.42 7.38 5.89 3.24 0.97 M6III 186 0
29 * ups Cap V* 20 40 02.9443337424 -18 08 19.166684604 8.75 6.76 5.10     M1III 101 0
30 V* V1981 Cyg LP* 21 02 24.1997590656 +44 47 27.525392304 9.73 7.90 6.23 4.46 2.90 M4.5III 116 0
31 HD 203535 * 21 21 20.4663514896 +46 43 47.379337176   6.88 6.72     A2 19 0
32 * mu. Cep s*r 21 43 30.4595558543 +58 46 48.165937434 8.85 6.43 4.08 1.98 0.22 M2-Ia 695 1
33 * bet Peg LP* 23 03 46.45746 +28 04 58.0336 6.05 4.09 2.42 0.92 -0.40 M2.5II-III 606 1
34 * lam And RS* 23 37 33.8427800830 +46 27 29.344721109 5.54 4.84 3.82 3.04 2.47 G8IVk 693 0

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