Cakirli, O., İbanoğlu, Cafer, 1946-, Southworth, J. (John), Frasca, A. and Hernandez, J. (Jesus). (2008) Spectroscopic and photometric analysis of NSV 24512: an early-type eclipsing binary embedded in a dust cloud. Monthly Notices of the Royal Astronomical Society, Vol.389 (No.1). pp. 205-212. ISSN 0035-8711

Full text not available from this repository.

Abstract

We present differential V-band photometric observations and the first radial velocities of NSV 24512, which is embedded in the Serpens star-forming region. This double-lined system has an eccentric orbit with an eccentricity of 0.193. The system is a member of visual double star ADS 11410AB with a separation of about 0.3 arcsec and an apparent visual magnitude difference of 0.125 mag; we find that the fainter component (component B) is responsible for the periodic light variation. Therefore, we subtracted the light contribution of component A from the total light. The V-band photometric data and radial velocities were then analysed simultaneously using the Wilson-Devinney program. From the blue-wavelength spectroscopic observations and radial velocities, we classify the primary and secondary components as B8V and B9V stars, respectively. The masses and radii of the component stars have been derived as 3.68 +/- 0.05 and 3.36 +/- 0.04 M-circle dot and 3.21 +/- 0.05 and 2.93 +/- 0.05 R-circle dot, respectively. Comparison with theoretical evolutionary models indicates that both components are premain-sequence stars with an age of about 2.1 Myr. The projected rotational velocities of the components measured by us are much smaller than the synchronous rotational velocities. The high asynchronism is further evidence of the very young age of the system. Using the radiative properties of the stars, we have redetermined the distance to NSV 24512 as 247 +/- 5 pc, which is in good agreement with, and more precise than, previous determinations. Adopting the same interstellar extinction and distance, we classify component A to be of spectral type 137, if it is a single star.

Item Type:	Journal Article
Subjects:	Q Science > QB Astronomy
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Double stars, Eclipsing binaries, Double stars -- Spectra, Astronomical photometry
Journal or Publication Title:	Monthly Notices of the Royal Astronomical Society
Publisher:	Wiley-Blackwell Publishing, Inc
ISSN:	0035-8711
Date:	1 September 2008
Volume:	Vol.389
Number:	No.1
Number of Pages:	8
Page Range:	pp. 205-212
Identification Number:	10.1111/j.1365-2966.2008.13528.x
Status:	Peer Reviewed
Publication Status:	Published
Funder:	Istituto nazionale di astrofisica (Italy) (INAF), Italy. Ministero dell'istruzione, dell'università e della ricerca (MIUR)y of Education, Universities and Research (Italy)] (MIUR), Science and Technology Facilities Council (Great Britain) (STFC)
References:	Andersen J., 1975, A&A, 44, 355 Chavarria K. C., de Lara E., Finkenzeller U., Mendoza E. E., Ocegueda J., 1988, A&A, 197, 151 de Jager C., Nieuwenhuijzen H., 1987, A&A, 177, 217 Drilling J. S., Landolt A. U., 2000, in Cox A. N., ed., Allen’s Astrophysical Quantities, 4th edn. Springer, Berlin, p. 388 Fabricius C., Hog E., Makarov V. V., Mason B. D., Wycoff G. L., S. E. Urban, 2002, A&A, 384, 180 Hartkopf W. I., Mason B. D., McAlister H. A., 2005, AJ, 111, 370 Hern´andez J., Calvet N., Brice˜no C., Hartmann L., Berlind P., 2004, AJ, 127, 1682 Knude J., 1992, A&AS, 92, 841 Lara E., Chavarria K. C., Lopez-Molina G., 1991, A&A, 243, 139 Massey P., Davis L. E., 1992, A User’s Guide to Stellar CCD Photometry with IRAF. Available online at http://iraf.noao.edu/iraf/ ftp/iraf/docs/daophot2.ps.Z. Otero S. A., 2005, Inf. Bull. Var. Stars, 5631 Pavlova L. A., Rspaev F. K., 1986, Astrofizika, 25, 461 Penny R. L., Seyle D., Gies D. R., Harvin J. A., Bagnuolo W. G. Jr, Thaller M. L., Fullerton A. W., Kaper L., 2001, ApJ, 548, 889 Perryman M. A. C. et al., 1997, A&A, 323, L49 Pojmanski G., 2002, AcA, 52, 397 Popper D. M., Jeong Y.-C., 1994, PASP, 106, 189 Prsa A., Zwitter T., 2005, ApJ 628, 426 Queloz D., Allain S., Mermilliod J.-C., Bouvier J., Mayor M., 1998, A&A, 335, 183 Racine R., 1968, AJ, 73, 233 Royer F., Grenier S., Baylac M., Gomez A. E., Zorec J., 2004, A&A, 393, 897 Rufener F., Bartholdi P., 1982, A&AS, 48, 503 Siess L., Dufour E., Forestini M., 2000, A&A, 358, 593 Skrutskie M. F., 1999, A&AS, 195, 340 Southworth J., Maxted P. F. L., Smalley B., 2004, MNRAS, 351, 1277 Southworth J., Maxted P. F. L., Smalley B., 2005, A&A, 429, 645 Straizys V., Cernis K., Bartasiute S., 1996, Baltic Astron., 5, 125 Strom S. E., Grasdalen G. L., Strom K. M., 1974, ApJ, 191, 11 Tokovinin A. A., 1997, A&AS, 124, 75 Tonry J., Davis M., 1979, AJ, 84, 1511 Topping J., 1972, Errors of Observation and Their Treatment. Chapman & Hall, London, p. 89 Van Buren D., McCray R., 1988, ApJ, 329, L93 Van Buren D., Noriega-Crespo A., Dgani R., 1995, AJ, 110, 2914 Van Hamme W., 1993, AJ, 106, 2096 Zhang C. Y., Laureijs R. J., Clark F. O., Wesselius P. R., 1988, A&A, 199, 170
URI:	http://wrap.warwick.ac.uk/id/eprint/17155

Data sourced from Thomson Reuters' Web of Knowledge

Request changes to a record

Actions (login required)

View Item