Results 91 to 100 of about 20,255 (236)

{BOAO Photometric Survey of Galactic Open Clusters. II. Physical Parameters of 12 Open Clusters

, 2002
We have initiated a long-term project, the BOAO photometric survey of open clusters, to enlarge our understanding of galactic structure using UBVI CCD photometry of open clusters which have been little studied before.
Ahumada J., Ann H. B., B.-G. Park, Bertelli G., Bonifazi A., Dean J. F., H. B. Ann, H. Sung, I.-S. Yuk, Lee S. H., Lucke P. B., M. G. Lee, M.-Y. Chun, Maeder A., Menzies J. W., Pandey A. K., S. H. Lee, S.-L. Kim, Scalo J., Sung H., Y.-B. Jeon   +20 more
core   +2 more sources

The Flattest Infrared Extinction Curve in Four Isolated Dense Molecular Cloud Cores

The Astrophysical Journal Letters
The extinction curve of interstellar dust in the dense molecular cloud cores is crucial for understanding dust properties, particularly size distribution and composition.
Jun Li, Bingqiu Chen, Biwei Jiang, He Zhao, Botao Jiang, Xi Chen   +5 more
doaj   +1 more source

An Ultraviolet Study of Star-Forming Regions in M31

, 2009
We present a comprehensive study of star-forming (SF) regions in the nearest large spiral galaxy M31. We use GALEX far-UV (1344-1786 \AA, FUV) and near-UV (1771-2831 \AA, NUV) imaging to detect young massive stars and trace the recent star formation ...
Aller, Barmby, Battinelli, Bianchi, Bianchi, Bianchi, Bianchi, Bianchi, Fuchs, Gordon, Gordon, Hammer, Hou, Ibata, Ivanov, Ivanov, Kennicutt, Luciana Bianchi, Magnier, Martin, Massey, Massey, Misselt, Morrissey, Soo-Chang Rey, Tolea, Walterbos, Yongbeom Kang   +27 more
core   +2 more sources

Probing the Distinct Extinction Law of the Pillars of Creation in M16 with JWST

The Astrophysical Journal Letters
Investigating the extinction law in regions of high dust extinction, such as the Pillars of Creation within the M16 region, is crucial for understanding the densest parts of the interstellar medium (ISM).
Jun Li, Bingqiu Chen, Biwei Jiang, Jian Gao, Xi Chen   +4 more
doaj   +1 more source

Spectrophotometric Distances to Galactic H\,{\sc{ii}} Regions

, 2010
We present a near infrared study of the stellar content of 35 H\,{\sc{ii}} regions in the Galactic plane. In this work, we have used the near infrared domain $J-$, $H-$ and $K_{s}-$ band color images to visually inspect the sample.
A. Damineli, A. P. Moisés, Allen, Arias, Arias, Barbosa, Bartkiewicz, Beck, Becklin, Bernasconi, Bica, Bik, Blitz, Blum, Blum, Blum, Blum, Brunthaler, C. L. Barbosa, Carpenter, Chini, Chini, Chini, Choi, Churchwell, Conti, Corbel, Diolaiti, Downes, Dutra, E. Figuerêdo, Fazio, Figer, Figuerêdo, Figuerêdo, Frogel, Furness, Goldader, Goto, Hachisuka, Hachisuka, Hanson, Hanson, Hewett, Hirota, Honma, Humphreys, Hyland, Indebetouw, Jackson, Johnson, Kang, Keto, Kim, Koornneef, Kuchar, Kumar, Kurtz, Kurtz, Leahy, Lester, Massi, Mathis, McClure-Griffiths, McKee, Melena, Menten, Mercer, Messineo, Moellenbrock, Moffat, Moran, Moscadelli, Nishiyama, Nishiyama, P. S. Conti, R. D. Blum, Reid, Reid, Reid, Robrade, Roman-Lopes, Roman-Lopes, Rubin, Russeil, Sato, Sato, Shaver, Skrutskie, Smith, Stead, Stolte, Straižys, Subramaniam, Thompson, Urquhart, Vacca, Ward-Thompson, Ward-Thompson, Wegner, Wilson, Wilson, Wilson, Wood, Xu, Xu, Zhang   +106 more
core   +1 more source

Observations of interstellar C2 toward three heavily reddened stars

The Astrophysical Journal, 1983
Observations have been made of the 2--0 band of the Phillips system of interstellar C/sub 2/ toward the heavily obscured early-type stars VI Cygni No. 12, HD 29647, and BD +66/sup 0/1675. The first direct proof that the rotational excitation temperatures of interstellar C/sub 2/ are nonthermal was obtained. Toward VI Cygni No.
B. L. Lutz, R. M. Crutcher
openaire   +1 more source

Exploring the Wolf Approach to Constraining NIR Extinction Laws in the Corona Australis Molecular Cloud

The Astronomical Journal
The viability of the star count (Wolf) method is assessed as a means of constraining the near-infrared (NIR) extinction law toward the Corona Australis molecular cloud. Using deep JHK _S photometry from the VISIONS survey, extinction maps with 1′ spatial
Botao Jiang, Jun Li, Xi Chen
doaj   +1 more source

Star Classification Possibilities with the Gaia Spectrophotometers. III. The Classification Accuracy with Decontaminated BP/RP Spectra

Open Astronomy, 2011
A medium-band 12-color photometric system, based on the decontaminated Gaia BP/RP spectra, has been proposed in our Paper II. Here we analyze a possibility to apply some versions of this system for the determination of temperatures and gravities of stars
Straižys V., Lazauskaitė R.
doaj   +1 more source

DIFFUSE INTERSTELLAR BAND 6202 ˚ A AS AN INDICATOR OF ORGANIC MATTER IN COSMOS: CEPHEID SPECTRA

Odessa Astronomical Publications, 2019
We have described the method of investigation of the diffuse interstellar band (DIB) at 6202 ˚ A. This DIB is seen in the spectra of cepheid stars, and it is blended with two stellar lines of Ce II (6201.773 ˚ A) and Ni I (6204.6 ˚ A).
S M. Andrievsky, A. Shereta, S. V, Khrapaty, S. A. Korotin, V. V. Kovtyukh, V. I. Kashuba   +5 more
doaj   +1 more source

Benchmarking Differential Reddening in Front of Globular Clusters

The Astronomical Journal
Interstellar extinction is a major obstacle in determining accurate stellar parameters from photometry near the Galactic disk. It is especially true for globular clusters at low galactic latitudes, which suffer from significant amounts of spatially ...
Csilla Kalup, László Molnár
doaj   +1 more source