2004A&A...427..937M


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.03CET04:09:26

2004A&A...427..937M - Astronomy and Astrophysics, volume 427, 937-944 (2004/12-1)

Fundamental parameters and evolutionary state of the Herbig Ae star candidate HD 35929.

MIROSHNICHENKO A.S., GRAY R.O., KLOCHKOVA V.G., BJORKMAN K.S. and KURATOV K.S.

Abstract (from CDS):

HD 35929 is a pre-main-sequence Herbig Ae star candidate that exhibits emission in the Hα line and a weak IR excess. Although its luminosity type was estimated as IV from low-resolution spectroscopy, the insignificant HIPPARCOS parallax (0.88±0.93mas) contradicted the low luminosity. To resolve this discrepancy, we took 3 high-resolution optical spectra of the star (region 5200-6915Å, R∼60000) and used an archival one (4000-6800Å, R∼48000). Our analysis of the spectral and photometric information shows that HD 35929 is an F2 III star with Teff=6880±100K, logg=3.3±0.1, logL/L=1.7±0.2, vsini=70±5km/s, M=2.3±0.2M, a mild metal deficit [Fe/H]=-0.2±0.1, and a weak interstellar reddening (AV∼0.1mag) at a distance D = 345±60pc. These results confirm an earlier suggestion by Marconi et al. (2000A&A...355L..35M) that HD 35929 is located within the instability strip. At the same time, we argue that it is not a young object, but rather a post-main-sequence giant. The fundamental parameters and IR excess of HD 35929 are similar to those of HD19993, an emission-line late A-type giant recently discovered by us (Miroshnichenko et al., 1996ARep...40..509M). These objects might represent a group of evolved intermediate-mass stars with an enhanced mass loss.

Abstract Copyright:

Journal keyword(s): techniques: spectroscopic - techniques: photometric - stars: circumstellar matter - stars: individual: HD 35929

Simbad objects: 12

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Number of rows : 12

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 * bet Cas dS* 00 09 10.68518 +59 08 59.2120 2.73 2.61 2.27 1.97 1.77 F2III 502 0
2 HD 19993 Em* 03 14 01.3594913400 +37 40 26.042846754   8.77 8.26 7.9   A7/A8IIe 13 0
3 HD 278937 Em* 03 40 46.9603307360 +32 31 53.715906654   10.66 10.40     A7III:kA2.5mA3e(r) 76 0
4 HD 29035 Be* 04 36 59.0779092121 +52 17 13.483411085   9.04 8.78     B9.5Ve 12 0
5 HD 35929 dS* 05 27 42.7907337821 -08 19 38.446457813   8.55 8.11     F2IV/V 92 0
6 NAME Ori I As* 05 38 -02.8           ~ 566 0
7 V* V351 Ori Ae* 05 44 18.7949420603 +00 08 40.411665342 9.44 9.22 8.87     A7V 101 0
8 HD 142666 TT* 15 56 40.0222941557 -22 01 40.004849949 9.41 9.37 8.82 8.31 8.01 F0V_sh 225 0
9 V* V856 Sco Ae* 16 08 34.2868591379 -39 06 18.326059778 7.66 7.41 7.05 6.92   A7IIIne_sh 359 0
10 * zet Ser PM* 18 00 29.0113725 -03 41 24.968552   4.982 4.616     F2V 178 0
11 HD 171834 gD* 18 36 39.0752784827 +06 40 18.496466779   5.786 5.425     F3V 102 0
12 * 31 Cep PM* 22 35 46.1336924726 +73 38 35.462456759       4.8   F3III-IV 60 0

    Equat.    Gal    SGal    Ecl

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2021.03.03-04:09:26

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