Results 51 to 60 of about 20,011 (211)

Evidence for Extremely High Dust Polarization Efficiency in NGC 3184

, 2002
Recent studies have found the Type II-plateau supernova (SN) 1999gi to be highly polarized (p_max = 5.8%, where p_max is the highest degree of polarization measured in the optical bandpass; Leonard & Filippenko 2001) and minimally reddened (E[B-V] = 0.21
Alexei V. Filippenko, Berdyugin A., Douglas C. Leonard, Hoflich P., Mathewson D. S., McCall M. L., Ryan Chornock, Scarrott S. M., Teerikorpi P., Weidong Li, Whittet D. C. B.   +10 more
core   +1 more source

Interstellar reddening towards six small areas in Puppis-Vela [PDF]

, 2012
We investigate the distribution of the interstellar dust towards six small volumes of the sky in the region of the Gum nebula. New high-quality four-colour uvby and H\beta\ Str\"omgren photometry obtained for 352 stars in six selected areas of Kapteyn ...
Arce, Bica, Cambrésy, Cha, Cha, Chanot, Cousins, Coşkunoǧlu, Crawford, Crawford, Crawford, Crawford, Crawford, de Zeeuw, Dodson, Dutra, Dutra, Ferlet, Franco, Franco, Franco, Franco, Franco, Frisch, G. A. P. Franco, Grønbech, Grønbech, Grønbech, Gum, Hawarden, Jeffries, Knude, Knude, Liseau, Lundström, May, Milne, Murphy, Münch, Netterfield, Rebull, Reipurth, Reipurth, Reis, Reiz, Sandqvist, Schlegel, van Leeuwen, Welsh, Welty, Woermann, Zealey   +51 more
core   +1 more source

Interstellar velocity components towards reddened stars [PDF]

Monthly Notices of the Royal Astronomical Society, 2000
ABSTRA C T The paper analyses the profiles of interstellar features observed towards heavily reddened stars. All the features show spectacular Doppler-splitting but the radial velocities of the single components as well as the number of such components vary from feature to feature in the same spectrum.
G. A. Galazutdinov, J. Krelowski, F. A. Musaev   +2 more
openaire   +1 more source

The deep eclipses of RW Aur revisited by long‐term photometric and spectroscopic monitoring

Astronomische Nachrichten, Volume 345, Issue 4, May 2024.
Abstract RW Aurigae is a young stellar system containing a classical T Tauri star as the primary component. It shows deep, irregular dimmings, first detected in 2010. At the University Observatory Jena, we carried out optical follow‐up observations. We performed multiband (BVRI) photometry of the system with the Cassegrain‐Teleskop‐Kamera II and the ...
Oliver Lux, Markus Mugrauer, Richard Bischoff   +2 more
wiley   +1 more source

Spatially resolved Spectro-photometry of M81: Age, Metallicity and Reddening Maps

, 2000
In this paper, we present a multi-color photometric study of the nearby spiral galaxy M81, using images obtained with the Beijing Astronomical Observatory 60/90 cm Schmidt Telescope in 13 intermediate-band filters from 3800 to 10000{\AA}.
Alloin D., Bessell M. S., Bressan A., Bressan A., Chiosi C., Diaz A., Erdelyi-Mendes M., Fagotto F., Fioc M., Fluks M. A., Fuzhen Cheng, Goerdt A., Haojing Yan, Hong Wu, Hongjun Su, J. Jeff Hester, Jablonka P., Jiansheng Chen, Jin Zhu, Kong X., Licai Deng, Mallik S. V., Ostlin G., Pagel B. E. J., Rogier A. Windhorst, Rui Chen, Schaerer D., Schmitt H. R., Shude Mao, Suijian Xue, Tantalo R., Tinsley B. M., Wean-shun Tsay, Wei-hsin Sun, Weipeng Lin, Wen Xu, Wen-ping Chen, Xiaohui Fan, Xiaoyang Xia, Xu Kong, Xu Zhou, Yong Li, Yong-Ik Byun, Zhaohui Shang, Zhaoji Jiang, Zheng Zheng, Zhenglong Zou, Zhongyuan Zheng, Zhou X.   +48 more
core   +1 more source

An Empirical Extinction Curve Revealed by Gaia XP Spectra and LAMOST

The Astrophysical Journal
We present a direct measurement of extinction curves using corrected Gaia XP spectra of the common sources in Gaia DR3 and LAMOST DR7. Our analysis of approximately 370,000 high-quality samples yielded a high-precision average extinction curve for the ...
Ruoyi Zhang, Haibo Yuan, Bowen Huang, Tao Wang, Lin Yang, Gregory M. Green, Xiangyu Zhang   +6 more
doaj   +1 more source

Observations of Interstellar Reddening in Cygnus and Perseus [PDF]

International Astronomical Union Colloquium, 1965
The Object of the Edinburgh Spectrophotometry Survey is to determine the interstellar extinction law as precisely as possible and to search for intrinsic variations in it. The observations have been extended to early type stars up to a limiting magnitude of 11ṃ0 in regions extending from lII = 50° to lII = 200°.
openaire   +1 more source

Interstellar Reddening Towards S188, Hw4 and We1–6 [PDF]

Symposium - International Astronomical Union, 1993
Photoelectric UBV photometry of stars was carried out in the angular vicinity (radius = 15′) of 3 planetary nebulae. An extinction distance relation was constructed for the line of sight towards each planetary nebula. This relation was verified by published data on nearby stars and star clusters. The distances derived are 850 ± 300 pc for PK 128 −04 1 (
openaire   +1 more source

The extinction curve in the visible and the value of Rv

, 2012
This article discusses the interstellar extinction curve in the visible and the value of Rv. It is concluded that the visible extinction curve is likely to be linear in the visible, and that indirect estimates of Rv from tentative determinations of Av ...
Ardeberg, Balázs, Bondar, Borgman, Cardelli, Divan, Greenstein, Greenstein, Greenstein, Hall, Henyey, Henyey, Hoyle, Johnson, Johnson, Johnson, Le Borgne, Mendoza, Nandy, Rozis-Saulgeot, Savage, Schalén, Schild, Schlafly, Schlegel, Schultz, Sherwood, Stead, Stebbins, Stebbins, Trumpler, Turner, Wegner, Whitford, Wickramasinghe, Zagury, Zagury   +36 more
core   +1 more source

Spectroscopy and BVI photometry of the young open cluster NGC 6604 [PDF]

, 2000
BVI photometry (from South Africa Astron. Obs.), Echelle high resolution spectroscopy and AFOSC integral field spectroscopy (from Asiago, Italy) of the young open cluster NGC 6604 are presented. Age, distance, reddening, membership, radial and rotational
Barbon, R., Carraro, G., Munari, U., Tomasella, L., Zwitter, T.   +4 more
core   +2 more sources