Results 101 to 110 of about 9,262 (225)

Modelling and observations of molecules in discs around young stars [PDF]

, 2013
This thesis contains a study of molecules within circumstellar discs around young stars. Firstly, the chemistry of a disc around a young, Class 0 protostar is modelled.
Ilee, John David
core  

Resolved Near-infrared Stellar Photometry from the Magellan Telescope for 13 Nearby Galaxies: J-region Asymptotic Giant Branch Method Distances

The Astrophysical Journal
We present near-infrared JHK photometry for the resolved stellar populations in 13 nearby galaxies: NGC 6822, IC 1613, NGC 3109, Sextans B, Sextans A, NGC 300, NGC 55, NGC 7793, NGC 247, NGC 5253, Cen A, NGC 1313, and M83, acquired from the 6.5 m Baade ...
Abigail J. Lee, Andrew J. Monson, Wendy L. Freedman, Barry F. Madore, Kayla A. Owens, Rachael L. Beaton, Coral Espinoza, Tongtian Ren, Yi Ren   +8 more
doaj   +1 more source

The Araucaria Project. The distance to the Sculptor group galaxy NGC 7793 from near-infrared photometry of Cepheid variables

EPJ Web of Conferences, 2017
We performed deep near-infrared J and K photometry of a field in the Sculptor Group spiral galaxy NGC 7793 using ESO VLT and HAWK-I instrument. We produced a sample of 14 Cepheids whose locations and periods of pulsation were known from our previous ...
Zgirski Bartlomiej, Gieren Wolfgang, Pietrzyński Grzegorz, Karczmarek Paulina, Górski Marek, Graczyk Dariusz, Pilecki Bogumil, Taormina Mónica, Suchomska Ksenia, Wielgórski Piotr, Konorski Piotr   +10 more
doaj   +1 more source

Optical and infrared photometry of the nearby type Ia supernova 2001el

, 2003
We present well-sampled optical (UBVRI) and infrared (JHK) light curves of the nearby (≈18.0 Mpc) Type la supernova SN 2001el, from 11 days before to 142 days after the time of B-band maximum.
Espinoza, Juan, Candia, Pablo, Höflich, Peter A., Krisciunas, Kevin, Pizarro, Sergio, Arenas, José, Landolt, Arlo U., Phillips, Mark M., Gonzalez, David, Suntzeff, Nicholas B., Gonzalez, Sergio   +10 more
core   +1 more source

Taxonomic Classification of Asteroids via Broadband Near-Infrared Photometry

, 2010
For faint asteroids, it is not practical to obtain near-infrared spectra. However, it may be possible to use broadband photometry to infer spectral classifications and study composition.
Dave, R., Emery, J., Mueller, M., Petersen, Eric, Trilling, D., Thomas, C., Delbo, M.   +6 more
core   +1 more source

From Earths to Super-Earths: Five New Small Planets Transiting M Dwarf Stars

The Astronomical Journal
Earth-sized planets transiting M dwarf stars present one of the best opportunities with current facilities for studying the atmospheric and bulk compositions of terrestrial worlds. Here, we statistically validate five new transiting Earth and super-Earth
Jonathan Gomez Barrientos, Heather A. Knutson, Morgan Saidel, Michael Greklek-McKeon, W. Garrett Levine, Nicholas Saunders, Howard Isaacson, Renyu Hu, Karen A. Collins, David R. Ciardi, Polina A. Budnikova, Dmitry V. Cheryasov, Samuel W. Yee, Diogo Souto, Aida Behmard, Akihiko Fukui, Avi Shporer, Akanksha Khandelwal, Bob Massey, Brice-Oliver Demory, Catherine A. Clark, Chris Stockdale, Emily A. Gilbert, Enric Palle, Francis P. Wilkin, Felipe Murgas, Francis Zong Lang, Ilse Plauchu-Frayn, Jessie L. Christiansen, Jon M. Jenkins, Joseph D. Twicken, Keith Horne, Michaël Gillon, Monika Lendl, Michael B. Lund, Norio Narita, Pam Rowden, Ramotholo Sefako, Richard P. Schwarz, Steven Giacalone, Urs Schroffenegger, Yilen Gómez Maqueo Chew   +41 more
doaj   +1 more source

Comparison of Infrared-Barrier Photometry and Near-Infrared Photometry to The Westergren Method in Measuring Erythrocyte Sedimentation Rate

Objective: To find out if there is a difference in the results of LED inspection using the infrared-barrier photometry and near-infrared photometry methods against the Westergren method.
Napitupulu, Ester Maduma
core  

The MYStIX wide-field near-infrared data: Optimal photometry in crowded fields

, 2013
We present JHK infrared data from the UK InfraRed Telescope (UKIRT) for a subset of the regions of the Massive Young Star-Forming Complex Study in Infrared and X-ray (MYStIX) survey. Some of the data were obtained specifically for the MYStIX project, and
KV Getman (21839255), ED Feigelson (15978437), RR King (21849110), PS Broos (21839261), T Naylor (7668551)   +4 more
core  

Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XXI. Candidate Red Quasars at z ≥ 6 from Near-infrared Photometry

The Astrophysical Journal
We present an analysis of near-infrared photometry of 59 quasars at 5.83  −24 mag) of the sample. This luminosity trend may support the idea that red quasars represent an evolutionary stage preceding unobscured quasars, often invoked in the merger-driven
Ryo Iwamoto, Yoshiki Matsuoka, Masatoshi Imanishi, Kazushi Iwasawa, Takuma Izumi, Nobunari Kashikawa, Toshihiro Kawaguchi, Mahoshi Sawamura, Michael A. Strauss, Ayumi Takahashi, Yoshiki Toba   +10 more
doaj   +1 more source

A METHOD FOR DETERMINING THE PHYSICAL PARAMETERS OF HOT SUPERGIANTS BASED ON SPECTRAL ENERGY DISTRIBUTION ANALYSIS

Physical Sciences and Technology
This study determines the physical parameters of B- and A-type hot supergiants through the construction and analysis of their spectral energy distributions (SEDs).
Alina Gyuchtash, Shakhida Nurmakhametova, Nadezhda Vaidman, Serik Khokhlov, Aldiyar Agishev, Aigerim Bakhytkyzy   +5 more
doaj   +1 more source