Search Results - "Schmidt, Sarah J."
-
1
The Near-ultraviolet Continuum Radiation in the Impulsive Phase of HF/GF-type dMe Flares. I. Data
Published in The Astrophysical journal (01-02-2019)“…We present near-UV (NUV) flare spectra from the Hubble Space Telescope (HST)/Cosmic Origins Spectrograph during two moderate-amplitude U-band flares on the…”
Get full text
Journal Article -
2
The Ultracool SpeXtroscopic Survey. I. Volume-limited Spectroscopic Sample and Luminosity Function of M7−L5 Ultracool Dwarfs
Published in The Astrophysical journal (01-10-2019)“…We present a volume-limited, spectroscopically verified sample of M7−L5 ultracool dwarfs (UCDs) within 25 pc. The sample contains 410 sources, of which 93%…”
Get full text
Journal Article Web Resource -
3
The Largest M Dwarf Flares from ASAS-SN
Published in The Astrophysical journal (10-05-2019)“…The All-sky Automated Survey for Supernovae (ASAS-SN) is the only project in existence to scan the entire sky in optical light approximately every day,…”
Get full text
Journal Article -
4
The Brown Dwarf Kinematics Project (BDKP). VI. Ultracool Dwarf Radial and Rotational Velocities from SDSS/APOGEE High-resolution Spectroscopy
Published in The Astrophysical journal. Supplement series (01-10-2024)“…Abstract We present precise measurements of radial (RV) and projected rotational ( v sin i ) velocities of a sample of 258 M6 to L2 dwarfs with multiepoch,…”
Get full text
Journal Article -
5
K2 Ultracool Dwarfs Survey. IV. Monster Flares Observed on the Young Brown Dwarf CFHT-BD-Tau 4
Published in The Astrophysical journal (10-07-2018)“…We present photometric measurements of two superflares observed on a very young brown dwarf, CFHT-BD-Tau 4, observed during Campaign 13 of the Kepler K2…”
Get full text
Journal Article -
6
Spatially resolved measurements of H2O, HCl, CO, OCS, SO2, cloud opacity, and acid concentration in the Venus near-infrared spectral windows
Published in Journal of geophysical research. Planets (01-08-2014)“…We observed Venus with the Apache Point Observatory 3.5 m telescope TripleSpec spectrograph (R = 3500, λ = 0.96–2.47 µm) on 1–3 March 2009 and on 25, 27, and…”
Get full text
Journal Article -
7
K2 Ultracool Dwarfs Survey. III. White Light Flares Are Ubiquitous in M6-L0 Dwarfs
Published in The Astrophysical journal (01-05-2018)“…We report the white light flare rates for 10 ultracool dwarfs using Kepler K2 short-cadence data. Among our sample stars, two have spectral type M6, three are…”
Get full text
Journal Article -
8
K2 Ultracool Dwarfs Survey. II. The White Light Flare Rate of Young Brown Dwarfs
Published in The Astrophysical journal (10-08-2017)“…We use Kepler K2 Campaign 4 short-cadence (one-minute) photometry to measure white light flares in the young, moving group brown dwarfs 2MASS J03350208+2342356…”
Get full text
Journal Article -
9
SpeX SPECTROSCOPY OF UNRESOLVED VERY LOW MASS BINARIES. II. IDENTIFICATION OF 14 CANDIDATE BINARIES WITH LATE-M/EARLY-L AND T DWARF COMPONENTS
Published in The Astrophysical journal (20-10-2014)“…Multiplicity is a key statistic for understanding the formation of very low mass (VLM) stars and brown dwarfs. Currently, the separation distribution of VLM…”
Get full text
Journal Article -
10
Giant white-light flares on fully convective stars occur at high latitudes
Published in Monthly notices of the Royal Astronomical Society (01-10-2021)“…ABSTRACT White-light flares are magnetically driven localized brightenings on the surfaces of stars. Their temporal, spectral, and statistical properties…”
Get full text
Journal Article -
11
A Catalog of M-dwarf Flares with ASAS-SN
Published in The Astrophysical journal (01-04-2020)“…We analyzed the light curves of 1376 early-to-late, nearby M dwarfs to search for white-light flares using photometry from the All-Sky Automated Survey for…”
Get full text
Journal Article -
12
K2 Ultracool Dwarfs Survey. I. Photometry of an L Dwarf Superflare
Published in The Astrophysical journal (20-03-2017)“…We report on K2 Campaign 8 measurements of a huge white light flare on the L1 dwarf SDSSp J005406.55-003101.8 (EPIC 220186653). The source is a typical L1…”
Get full text
Journal Article -
13
MULTI-WAVELENGTH CHARACTERIZATION OF STELLAR FLARES ON LOW-MAss STARS USING SDss AND 2MAss TIME-DOMAIN SURVEYS
Published in The Astrophysical journal (20-03-2012)“…We present the first rates of flares from M dwarf stars in both red optical and near-infrared (NIR) filters. We have studied ~50,000 M dwarfs from the Sloan…”
Get full text
Journal Article -
14
Calibrating Ultracool Dwarfs: Optical Template Spectra, Bolometric Corrections, and chi Values
Published in Publications of the Astronomical Society of the Pacific (01-07-2014)“…We present optical template spectra, bolometric corrections, and chi values for ultracool dwarfs. The templates are based on spectra from the Sloan Digital Sky…”
Get full text
Journal Article -
15
The Effect of Atmospheric Cooling on Vertical Velocity Dispersion and Density Distribution of Brown Dwarfs
Published in The Astrophysical journal (20-09-2017)“…Abstract We present a Monte Carlo simulation designed to predict the vertical velocity dispersion of brown dwarfs in the Milky Way. We show that since these…”
Get full text
Journal Article -
16
Probing the Flare Atmospheres of M Dwarfs Using Infrared Emission Lines
Published in The Astrophysical journal (20-01-2012)“…We present the results of a campaign to monitor active M dwarfs using infrared spectroscopy, supplemented with optical photometry and spectroscopy. We detected…”
Get full text
Journal Article -
17
2MASS J11151597+1937266: A Young, Dusty, Isolated, Planetary-mass Object with a Potential Wide Stellar Companion
Published in The Astrophysical journal (20-01-2018)“…We present 2MASS J11151597+1937266, a recently identified low-surface-gravity L dwarf, classified as an L2γ based on Sloan Digital Sky Survey optical…”
Get full text
Journal Article -
18
MULTI-WAVELENGTH CHARACTERIZATION OF STELLAR FLARES ON LOW-MASS STARS USING SDSS AND 2MASS TIME-DOMAIN SURVEYS
Published in The Astrophysical journal (20-03-2012)Get full text
Journal Article -
19
Who asks questions at astronomy meetings?
Published in Nature astronomy (02-06-2017)“…Over the last decade, significant attention has been drawn to the gender ratio of speakers at conferences, with ongoing efforts for meetings to better reflect…”
Get full text
Journal Article -
20
H alpha Emission From Active Equal-Mass, Wide M Dwarf Binaries
Published in Publications of the Astronomical Society of the Pacific (01-12-2014)“…We identify a sample of near-equal mass wide binary M dwarf systems from the SLoWPoKES catalog of common proper-motion binaries and obtain follow-up…”
Get full text
Journal Article