Results 71 to 80 of about 19,928 (198)

Mapping Interstellar Dust in the Foreground Outer Disk of Overlapping Galaxy Pair VV 191 with HST and JWST

The Astronomical Journal
VV 191 is a nearby ( z ∼ 0.05), overlapping (occulting) galaxy pair, where a multiple-armed spiral galaxy is backlit by an elliptical galaxy. The overlap is used to derive and map dust attenuation in two James Webb Space Telescope NIRCam filters (F090W ...
Clayton D. Robertson, Benne W. Holwerda, Jessica M. Berkheimer, Trevor Butrum, Ian Castellano, Kyle W. Cook, William C. Keel, Anton M. Koekemoer, Divya Patel, Maria del Carmen Polletta, Rogier A. Windhorst   +10 more
doaj   +1 more source

The distance to the young cluster NGC 7129 and its age

, 2013
The dust cloud TGU H645 P2 and embedded in it young open cluster NGC 7129 are investigated using the results of medium-band photometry of 159 stars in the Vilnius seven-colour system down to V = 18.8 mag.
Boyle, R. P., Kazlauskas, A., Laugalys, V., Maskoliunas, M., Moroni, P. G. Prada, Straizys, V., Tognelli, E., Zdanavicius, J., Zdanavicius, K.   +8 more
core   +1 more source

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

Absorption-Line Probes of Gas and Dust in Galactic Superwinds

, 2000
We discuss moderate resolution spectra of the NaD absorption-line in a sample of 32 far-IR-bright starburst galaxies. In 18 cases, the line is produced primarily by interstellar gas, and in 12 of these it is blueshifted by over 100 km/s relative to the ...
Aalto S., Alton P., Alton P., Antonucci R., Awaki M., Bland-Hawthorn J., Carollo M., Casoli F., David K. Strickland, Davies J., Draper P., Elfhag T., Gibson B., Heckman T., Kunth D., Lee Armus, Lequeux J., Madau P., Matthew D. Lehnert, Mirabel I. F., Read A., Sansom A., Scarrott S., Scarrott S., Scarrott S., Sofue Y., Stickel M., Strel’nitskii V. S., Strickland D. K., Timothy M. Heckman, Tomisaka K.   +30 more
core   +1 more source

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

Two New LBV Candidates in the M33 Galaxy

, 2010
We present two new luminous blue variable (LBV) candidate stars discovered in the M33 galaxy. We identified these stars (Valeev et al. 2010) as massive star candidates at the final stages of evolution, presumably with a notable interstellar extinction ...
A. Claret, A. F. Valeev, A. F. Valeev, A. F. Valeev, A. M. Genderen van, A. Z. Bonanos, D. Calzetti, D. E. Osterbrock, D. Zaritsky, E. L. Chentsov, G. G. Fazio, G. H. Rieke, G. Koenigsberger, G. Meynet, J. D. Hartman, J. E. O’Donnell, J. H. Groh, J. S. Clark, K. U. Allen, N. Smith, O. N. Sholukhova, P. Didelon, P. J. Flower, P. Massey, P. Massey, R. M. Humphreys, R. M. Humphreys, R. M. Humphreys, S. Fabrika, S. Fabrika, S. N. Fabrika, T. Szeifert, V. V. Gvaramadze, V. V. Gvaramadze   +33 more
core   +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

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

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