2015AJ....150..142H


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.09CEST20:25:30

2015AJ....150..142H - Astron. J., 150, 142 (2015/November-0)

Quantifying the carbon abundances in the secondary stars of SS Cygni, RU Pegasi, and GK Persei.

HARRISON T.E. and HAMILTON R.T.

Abstract (from CDS):

We use a modified version of MOOG to generate large grids of synthetic spectra in an attempt to derive quantitative abundances for three CVs (GK Per, RU Peg, and SS Cyg) by comparing the models to moderate resolution (R ∼ 25,000) K-band spectra obtained with NIRSPEC on Keck. For each of the three systems we find solar, or slightly sub-solar values for [Fe/H], but significant deficits of carbon: for SS Cyg we find [C/Fe] = -0.50, for RU Peg [C/Fe] = -0.75, and for GK Per [C/Fe] = -1.00. We show that it is possible to use lower resolution (R ∼ 2000) spectra to quantify carbon deficits. We examine realistic veiling scenarios and find that emission from H i or CO cannot reproduce the observations.

Abstract Copyright:

Journal keyword(s): infrared: stars - novae, cataclysmic variables - stars: individual: (SS Cyg, RU Peg, GK Per)

Status at CDS:  

Simbad objects: 17

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Number of rows : 17

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 3765 PM* 00 40 49.2699101367 +40 11 13.819725965   8.30   6.8   K2V 231 0
2 * 107 Psc PM* 01 42 29.7634932653 +20 16 06.660242064 6.57 6.08 5.24 4.55 4.12 K1V 498 0
3 V* TT Ari No* 02 06 53.0797667881 +15 17 41.849759579   10.73 10.20     Bep: 417 0
4 V* GK Per No* 03 31 12.0096626899 +43 54 15.467450081   10.2 14.0     K1IV 861 0
5 * eps Eri BY* 03 32 55.8449634 -09 27 29.731165 5.19 4.61 3.73 3.00 2.54 K2V 1675 1
6 HD 36003 PM* 05 28 26.0954741443 -03 29 58.396897793 9.864 8.777 7.642 6.968 6.401 K5V 179 0
7 HD 45977 PM* 06 30 07.3034571502 -11 48 32.191361062   10.25 9.10     K4+Vk: 36 0
8 V* U Gem DN* 07 55 05.2323858391 +22 00 05.045435077   15.3 14.54     DA 1043 0
9 * 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 2118 0
10 * 14 Her PM* 16 10 24.3152754550 +43 49 03.498734567   7.57   6.1   K0V 403 1
11 HD 161198 SB* 17 43 15.6719436218 +21 36 33.482802745   8.27   7.0   G9V 108 0
12 V* WZ Sge DN* 20 07 36.5036203067 +17 42 14.733657651   15.30 15.20     DAepv 888 0
13 * 61 Cyg B Fl* 21 06 55.2640651855 +38 44 31.362140913 8.63 7.40 6.03 4.86 3.55 K7V 665 1
14 V* SS Cyg DN* 21 42 42.8034554117 +43 35 09.863763484 11.07 8.2 7.70     K5V 1208 1
15 V* RU Peg DN* 22 14 02.5507273174 +12 42 11.275480341     12     sdBe+G8IV:n 289 0
16 HD 219134 Fl* 23 13 16.9747821012 +57 10 06.076520993 7.460 6.560 5.570 4.76 4.23 K3V 510 1
17 * gam Psc PM* 23 17 09.9374911 +03 16 56.237975 5.20 4.62 3.70 2.98 2.47 G9III:Fe-2 249 0

    Equat.    Gal    SGal    Ecl

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2020.04.09-20:25:30

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