2014ApJ...797...38S

Query : 2014ApJ...797...38S

2014ApJ...797...38S - Astrophys. J., 797, 38 (2014/December-2)

X-ray emission line spectroscopy of cataclysmic variables. II. Temperatures and densities from line ratios in the Chandra HETG band.

SCHLEGEL E.M., SHIPLEY H.V., RANA V.R., BARRETT P.E. and SINGH K.P.

Abstract (from CDS):

We summarize the results of a line-by-line fitting analysis of the available spectra obtained using the Chandra High-Energy Transmission Grating. We confirm the existence of broad ionization and electron temperature ranges and high number densities in cataclysmic variables (CVs) of all subtypes. Temperatures range from ∼0.4 keV to ∼5-10 keV or more with a broad range detected in any given CV. In other words, single-temperature models do not describe the line emission. Number densities also cover a broad range, from 1012 to >1016/cm3. We demonstrate that much of the plasma is in a nonequilibrium state; the Fe emission, however, may arise from plasma in the ionization equilibrium.

Abstract Copyright: ∼

Journal keyword(s): novae, cataclysmic variables - stars: dwarf novae - X-rays: binaries

Simbad objects: 21

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Number of rows : 21
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 V* TT Ari CV* 02 06 53.0797508832 +15 17 41.851038804   10.73 10.20     Bep: 441 0
2 V* WX Hyi CV* 02 09 50.8241651856 -63 18 39.831098040   10.70     13.038 ~ 201 0
3 V* GK Per No* 03 31 12.0098863320 +43 54 15.469951212   14.139 13.090 12.589   K1IV 935 0
4 * alf Aur SB* 05 16 41.35871 +45 59 52.7693 1.33 0.88 0.08 -0.52 -0.96 G3III: 1178 0
5 V* U Gem CV* 07 55 05.2323858391 +22 00 05.045435077   15.3 14.54     DA 1101 0
6 * zet Pup BY* 08 03 35.04754 -40 00 11.3321 0.89 1.98 2.25 2.36 2.58 O4I(n)fp 1154 1
7 V* SU UMa CV* 08 12 28.2695986944 +62 36 22.427676396           B2 498 0
8 V* SW Sex CV* 10 15 09.3769935988 -03 08 32.850732738           ~ 203 0
9 V* YY Dra EB* 11 43 35 +71 42.2           ~ 36 1
10 V* EX Hya CV* 12 52 24.2222471899 -29 14 55.999766523   13.51 13.49 13.55   M5-6V 694 0
11 V* V834 Cen CV* 14 09 07.2863511816 -45 17 16.023776676   16.0   15.301   M6.5 318 0
12 V* HZ Her LXB 16 57 49.8110126616 +35 20 32.486555472 11.90 14.89 13.63 13.88   B3/6ep 2078 0
13 V* V426 Oph CV* 18 07 51.6919772928 +05 51 47.804055084           ~ 170 0
14 V* AM Her CV* 18 16 13.2546541781 +49 52 04.759861155   15.124 14.808 13.525   M4.5-5Ve 965 0
15 V* V603 Aql No* 18 48 54.6369872232 +00 35 02.857106184 10.73 12.106 12.087 11.986   OB+e: 547 0
16 V* V1223 Sgr CV* 18 55 02.3108012664 -31 09 49.584656268           ~ 333 0
17 NAME Cyg-1 * 20 24 16 +42 15.6           ~ 2 0
18 NAME Cyg-2 * 20 24 27 +42 15.1           ~ 2 0
19 V* AE Aqr CV* 20 40 09.1598959176 -00 52 15.055595220   12.46 10.40   10.191 K3-5IV/V 668 0
20 V* SS Cyg CV* 21 42 42.8034497592 +43 35 09.867842484 11.07 12.651 12.032 9.326   K5V 1290 1
21 V* AO Psc CV* 22 55 17.9860863984 -03 10 39.981831564           ~ 310 0

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