1997A&A...325.1083P

Query : 1997A&A...325.1083P

1997A&A...325.1083P - Astronomy and Astrophysics, volume 325, 1083-1087 (1997/9-3)

The luminosity of the H_α-emission envelopes of variable Is(A)-type stars.

PUGACH A.F. and KOVALCHUK G.U.

Abstract (from CDS):

We present the results of the analysis of the emission spectra of variable Is(A)-type stars. Sixteen stars have been observed in 1988-1992 at the 6-m telescope of Special Astrophysical Observaroty, Russian Academy of Sciences (SAO RAS) with the middle-resolution (R≃3000) echelle spectrograph ``Zebra". Equivalent widths of the H_α and H_β (if available) emission components were obtained, the underlying profile of the corresponding absorption lines were taken into account. The luminosities of the emission envelopes in the H_α and H_β lines were then calculated. The main result of the investigation is that the luminosity of the emission envelope appears to depend on the effective temperature of the star.

Abstract Copyright: ∼

Journal keyword(s): stars: early type - stars: emission line - stars: variables: other - stars: pre main-sequence

Simbad objects: 21

View the references in ADS

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 - 2022	#notes
1	V* VX Cas	Ae*	00 31 30.6818495040	+61 58 50.984946300	11.83	11.59	10.50	11.19	10.94	A0Vep	130	0
2	HD 278937	Em*	03 40 46.9605708144	+32 31 53.715087444		10.66	10.40			A7III:kA2.5mA3e(r)	80	0
3	V* XY Per	Ae*	03 49 36.3365862552	+38 58 55.548299928	12.12	10.14	9.58	9.54	8.40	A2II+B6	146	0
4	V* UX Ori	Ae*	05 04 29.9878898040	-03 47 14.286732072	10.25	10.93	8.70	9.62	9.43	A4IVe	351	1
5	HD 287841	Y*O	05 24 42.8032369656	+01 43 48.249234516	10.55	10.45	10.17	9.99	9.80	A8V	98	0
6	V* CO Ori	Or*	05 27 38.3352	+11 25 38.923	12.96	12.33	10.30	10.33	9.63	F7Ve	162	0
7	HD 244524	Ae*	05 31 26.7738677784	+11 01 22.543195944		9.63	9.48			B9e	22	0
8	V* HK Ori	Ae*	05 31 28.049808	+12 09 10.30212	11.82	12.235	11.716	11.632	10.56	A2?e+G0?e	184	1
9	V* EZ Ori	Or*	05 34 18.5664045960	-05 04 47.807028228			12.00		10.57	G4Ve	96	0
10	V* CQ Tau	Ae*	05 35 58.4666264136	+24 44 54.091450572	11.290	10.780	10.000		8.33	F5IVe	283	0
11	V* BN Ori	Ae*	05 36 29.3484433464	+06 50 02.169401568		10.04	8.80	9.59		F4e	64	0
12	HD 37258	Ae*	05 36 59.2489032761	-06 09 16.317559872		9.72	9.61	9.56		A3Ve	123	0
13	V* RR Tau	Ae*	05 39 30.5115918672	+26 22 26.967444996	11.64	12.09	11.28	10.58	10.17	A0:IVe	222	0
14	V* V351 Ori	Ae*	05 44 18.7949456328	+00 08 40.410217104	9.44	9.22	8.87			A7V	107	0
15	V* VV Ser	Ae*	18 28 47.8620017808	+00 08 39.923474964	12.99	12.63	11.80	11.01	10.24	A5Ve	241	0
16	V* DD Ser	Or*	18 41 13.1591957376	-01 58 05.431826676		11.02	10.67			A0	22	0
17	V* WW Vul	Ae*	19 25 58.7494120560	+21 12 31.333658616	11.46	10.99	10.25	10.38	10.12	A2IVe	220	0
18	EM* LkHA 371	Ae*	20 47 23.5950146328	+43 44 39.740360748		13.79	12.90	13.76		A0/5	46	1
19	V* BH Cep	Ae*	22 01 42.8723960712	+69 44 36.426918696	12.18	11.54	11.01	10.62	10.32	F5IIIe	59	0
20	V* BO Cep	Ae*	22 16 54.0583196880	+70 03 44.988517332	11.86	11.98	11.55	11.16	10.84	F5Ve	65	0
21	V* SV Cep	Ae*	22 21 33.2166238512	+73 40 27.097678812	11.40	11.25	10.35	10.28	10.08	A2IVe	126	0

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